CN114569177A

CN114569177A - Anastomat

Info

Publication number: CN114569177A
Application number: CN202011381361.7A
Authority: CN
Inventors: 杜运峰
Original assignee: Suzhou IntoCare Medical Technology Co Ltd
Current assignee: Suzhou IntoCare Medical Technology Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2022-06-03
Anticipated expiration: 2040-11-30
Also published as: CN114569177B

Abstract

A stapler includes an end effector, a closure mechanism, a staple pushing assembly, and a first drive mechanism. The end effector comprises a nail bin assembly and a nail anvil, and an anastomosis nail is arranged in the nail bin assembly; the closure mechanism is configured to drive the cartridge assembly and the anvil into apposition to close the end effector; the staple pushing assembly is configured to push out the staples from the staple cartridge assembly; the first drive mechanism is configured to: in the closing stage, the first driving mechanism is detachably connected with the closing mechanism to drive the closing mechanism to close the end effector; in a staple pushing stage after the closing stage, the first driving mechanism is separated from the closing mechanism and drives the staple pushing assembly to push out the staples from the staple cartridge assembly. The stapler can be applied in the medical field, for example as a surgical instrument in a surgical procedure. During operation of the stapler, the closing phase and the staple pushing phase are independent of each other and do not interfere with each other, and the first drive mechanism is configured to drive the implementation of the two phases.

Description

Anastomat

Technical Field

At least one embodiment of the present disclosure is directed to a stapler.

Background

In surgical treatment, various kinds of staplers are widely used, for example, a skin stapler, a circular stapler for digestive tracts (esophagus, stomach and intestine, etc.), a rectal stapler, a circular hemorrhoid stapler, a circumcision stapler, a blood vessel stapler, a hernia stapler, a lung cutting stapler, and the like. The anastomats are equipment used in medicine to replace traditional manual suturing, and due to the development of modern science and technology and the improvement of manufacturing technology, various anastomats used clinically at present have the advantages of quick and accurate suturing, simple and convenient operation, small bleeding amount, few side effects, few operation complications and the like, and sometimes enable the focus to be removed in the tumor operation which cannot be removed in the past, so the anastomats are favored and advocated by clinical surgeons at home and abroad.

Generally, a stapler is sutured using staples made of materials such as medical stainless steel, titanium alloy, biodegradable magnesium alloy, and the like.

Disclosure of Invention

At least one embodiment of the present disclosure provides a stapler including an end effector, a closure mechanism, a staple pushing assembly, and a first drive mechanism. The end effector comprises a nail bin assembly and a nail anvil, and an anastomosis nail is arranged in the nail bin assembly; the closure mechanism is configured to drive the cartridge assembly and the anvil into apposition to close the end effector; the staple pushing assembly is configured to push out the staples from the staple cartridge assembly; the first drive mechanism is configured to: in the closing stage, the first driving mechanism is detachably connected with the closing mechanism to drive the closing mechanism to close the end effector; in a staple ejection stage following the closure stage, the first drive mechanism is disengaged from the closure mechanism and drives the staple ejection assembly to eject staples from the cartridge assembly.

For example, an embodiment of the present disclosure provides a stapler wherein the first drive mechanism moves toward the end effector during a closing phase in which the first drive mechanism drives the closure mechanism to close the end effector and a staple pushing phase in which the staple pushing assembly is driven to push the staples out of the cartridge assembly.

For example, an embodiment of the present disclosure provides a stapler further including a second driving mechanism connected to the first driving mechanism, detachably connected to the closing mechanism during the closing stage, and configured to move toward the end effector under the driving of the first driving mechanism to bring the closing mechanism into contact with and apply pressure to the cartridge assembly and the anvil to close the end effector; the second drive mechanism is further configured to disengage from the closure mechanism during the staple ejection stage and drive the staple ejection assembly to eject the staples from the cartridge assembly under drive of the first drive mechanism.

For example, one embodiment of the present disclosure provides a stapler including a main body portion and a detachable portion detachably connected to the main body portion; the first drive mechanism is located on the main body portion, the second drive mechanism, the closure mechanism, the staple pushing assembly and the end effector mechanism are located on the detachable portion, and the detachable portion is connected with the main body portion so that the second drive mechanism is detachably connected with the first drive mechanism.

For example, an embodiment of the present disclosure provides a stapler wherein the first driving mechanism and the second driving mechanism extend in an axial direction, the first driving mechanism includes a first end far away from the end effector in the axial direction and a second end opposite to the first end, and the second driving mechanism includes a first end close to the first driving mechanism and a second end far away from the first driving mechanism in the axial direction; the second end of the first driving mechanism is detachably connected with the first end of the second driving mechanism, and the first driving mechanism moves along the axial direction so as to drive the second driving mechanism to move along the axial direction.

For example, an embodiment of the present disclosure provides a stapler, wherein the first driving mechanism is a single driving rod.

For example, in the stapler provided by an embodiment of the present disclosure, the stapler further includes an electric driving mechanism, a first end of the first driving mechanism is connected to the electric driving mechanism, and the electric driving mechanism drives the first driving mechanism to move along the axial direction.

For example, an embodiment of the present disclosure provides a stapler further including a separable connection structure configured to connect with the closing mechanism and the second drive mechanism during the closing phase to move toward the end effector as the second drive mechanism moves to drive the closing mechanism toward the end effector to close the end effector, and configured to separate from the closing mechanism or separate from the second drive mechanism to stop driving the closing mechanism to move after the closing mechanism drives the end effector to close.

For example, one embodiment of the present disclosure provides a stapler wherein the separable coupling structure is detachably coupled to the second drive mechanism and detachably coupled to the closure mechanism; alternatively, the separable connecting structure is fixedly connected with one of the second driving mechanism and the closing mechanism and detachably connected with the other of the second driving mechanism and the closing mechanism.

For example, an embodiment of the present disclosure provides a stapler, wherein the first driving mechanism and the second driving mechanism extend in an axial direction, a direction perpendicular to the axial direction is a longitudinal direction, and the separable connecting structure includes a first end and a second end in the longitudinal direction; the second drive mechanism comprises a first connecting structure and the closure mechanism comprises a second connecting structure; during the process of driving the closing mechanism toward the end effector by the separable connector structure, a first end of the separable connector structure is connected to the second drive mechanism by the first connector structure, and a second end of the separable connector structure is connected to the closing mechanism by the second connector structure; the separable connecting structure is configured to be movable relative to the first and second connecting structures in the longitudinal direction to separate the second end of the separable connecting structure from the closure mechanism or to separate the first end of the separable connecting structure from the second drive mechanism.

For example, an embodiment of the present disclosure provides a stapler wherein the stapler further includes a separation driving structure configured to apply a driving force in the longitudinal direction to the separable connecting structure after the end effector is closed so that the separable connecting structure moves in the longitudinal direction under the driving force to separate the second end of the separable connecting structure from the closing mechanism or separate the first end of the separable connecting structure from the second driving mechanism.

For example, an embodiment of the present disclosure provides a stapler, wherein the first connecting structure is a groove provided in the second driving mechanism, the separable connecting structure includes a main body portion and a first boss protruding from a first surface of the main body portion, the first surface of the main body portion faces the groove, and the first boss is located at a first end of the separable connecting structure; during the closing stage, the main body part of the separable connecting structure drives the closing mechanism to move along the axial direction, and the first boss part is embedded in the groove so that the separable connecting structure moves towards the end effector along with the movement of the second driving mechanism; the first boss includes a first inclined face intersecting the axial direction and the longitudinal direction; the separation drive structure is positioned on one side of the separable connecting structure close to the end effector; after the separable connecting structure drives the closing mechanism to move towards the end effector along the axial direction to close the end effector, the separable connecting structure contacts the first inclined surface to apply the resistance force along the axial direction and the driving force along the longitudinal direction to the first inclined surface, and the separable connecting structure moves along the longitudinal direction under the action of the driving force along the longitudinal direction.

For example, an embodiment of the present disclosure provides a stapler wherein the separation driving structure includes a first barrier slope intersecting the axial direction and the longitudinal direction and configured to contact the first slope of the first boss to apply the resistance force in the axial direction and the driving force in the longitudinal direction to the first slope after the separable connection structure drives the closing mechanism to move in the axial direction toward the end effector to close the end effector, and the first barrier slope is parallel to the first slope.

For example, an embodiment of the present disclosure provides a stapler, wherein an included angle between the first inclined surface and the axial direction, which is close to the end effector, is an obtuse angle, and the separable connecting structure moves away from the closing mechanism in the longitudinal direction under the action of the driving force in the longitudinal direction to separate from the closing mechanism; or the included angle between the first inclined surface and the axial included angle close to the end effector is an acute angle, and the separable connecting structure moves close to the closing mechanism along the longitudinal direction under the action of the longitudinal driving force to be separated from the second driving mechanism.

For example, in an embodiment of the present disclosure, the stapler further includes a fixing bracket, and the closing mechanism is disposed on the fixing bracket, and the fixing bracket includes a first sliding groove and a second sliding groove. The first sliding groove extends along the axial direction; the second sliding groove extends along the axial direction, is communicated with the first sliding groove, is positioned on one side of the first sliding groove close to the end effector, and comprises a first groove wall and a second groove wall which are opposite to each other in the transverse direction; the transverse direction is perpendicular to the axial direction and the longitudinal direction, the first groove wall is used as the separation driving structure, and the surface of the first groove wall facing the separable connecting structure is provided with the first barrier inclined surface; during the closing phase, the body portion of the separable connector structure being connected to the closing structure, the body portion of the separable connector structure moving in the first slide slot toward the end effector to drive the closing mechanism toward the end effector as the second drive mechanism moves in the axial direction toward the end effector; after the closing stage, at least a portion of the body portion of the separable connecting structure in the axial direction enters the second runner to bring the first barrier ramp into contact with the first ramp surface.

For example, an embodiment of the present disclosure provides a stapler wherein the separable connecting structure further includes a second boss protruding from a second surface of the main body portion and located at the first end of the separable connecting structure, the second boss including a second inclined surface intersecting the axial direction and the longitudinal direction, the second surface being opposite to the first surface; the second groove wall also serves as the separation driving structure and includes a second barrier slope facing the separable connection structure, the second barrier slope being configured to contact the second slope to apply the resistance force in the axial direction and the driving force in the longitudinal direction to the second slope and to be parallel to the second slope; after the closing stage, at least a portion of the body portion of the separable connecting structure in the axial direction enters the second runner, and the first boss and the second boss are stopped by the first groove wall and the second groove wall outside the second runner to bring the first barrier ramp into contact with the first inclined surface and the second barrier ramp into contact with the second inclined surface.

For example, an embodiment of the present disclosure provides the stapler, wherein a width of the first sliding groove in the transverse direction is greater than a width of the second sliding groove in the transverse direction, and the width of the second sliding groove in the transverse direction is greater than a width of the main body portion and is smaller than a sum of a width of the first boss, a width of the main body portion, and a width of the second boss.

For example, an embodiment of the present disclosure provides the stapler, wherein a length of the second slide groove in the axial direction is smaller than a length of the first slide groove in the axial direction.

For example, in the anastomat provided by an embodiment of the present disclosure, the closing mechanism is a sleeve sleeved outside the second driving mechanism, the second connecting structure is a connecting hole penetrating through a cylinder wall of the sleeve, and a second end of the separable connecting structure is detachably inserted into the connecting hole.

For example, in the stapler provided by an embodiment of the present disclosure, the closing mechanism is a sleeve sleeved outside the second driving mechanism, the staple cartridge assembly includes a first end close to the sleeve, and the anvil includes a first end close to the sleeve; during the closing stage, the second drive mechanism is driven by the first drive mechanism to move toward the end effector to drive the sleeve to move toward the end effector so that the sleeve is sleeved over the first end of the staple cartridge assembly and the first end of the anvil to apply pressure to the first end of the staple cartridge assembly and the first end of the anvil to close the end effector.

For example, an embodiment of the present disclosure provides a stapler wherein an end of the end effector proximate to the sleeve includes a guide ramp angled relative to the axial direction and the longitudinal direction, the guide ramp including a first end proximate to the sleeve in the axial direction and a second end distal from the sleeve, the first end also being closer to the sleeve than the second end in the longitudinal direction; in the closed stage, the sleeve contacts the guide ramp and slides along the guide ramp toward the cartridge assembly and the anvil prior to contacting the cartridge assembly and the anvil.

For example, an embodiment of the present disclosure provides a stapler wherein a wall of the cartridge includes a curved surface, and at least one of the first end of the cartridge assembly and the first end of the anvil includes a curved force-bearing surface configured to contact the cartridge and bear a pressure applied by the cartridge.

For example, an embodiment of the present disclosure provides a stapler, wherein the sleeve includes an inner surface contacting the force-bearing surface, and the inner surface is a curved surface; the curvature of the force-bearing surface is equal to the curvature of the inner surface of the sleeve.

For example, an embodiment of the present disclosure provides a stapler, wherein the staple pushing assembly includes a staple pushing sheet, a staple pushing slider and a staple pushing driving mechanism. A staple pusher tab configured to apply pressure to the staples to push the staples out of the staple cartridge; the staple pushing slider is configured to apply pressure to the staple pushing sheet to drive the staple pushing sheet to apply staple pushing pressure to the staples; the nail pushing driving mechanism is configured to move along the axial direction under the driving of the first driving structure and the second driving mechanism so as to drive the nail pushing slider to move along the axial direction, so that the nail pushing slider is in contact with the nail pushing sheet to apply the nail pushing pressure to the nail pushing sheet.

For example, in the stapler provided by an embodiment of the present disclosure, before the staple pushing operation, the staple pushing driving mechanism is connected to the second driving mechanism, and moves to contact with the staple pushing slider along with the movement of the second driving mechanism.

For example, in the stapler provided by an embodiment of the present disclosure, before staple pushing is performed, the staple pushing driving mechanism is located on a side of the second driving mechanism close to the staple pushing slider and has a space with the second driving mechanism, and the second driving mechanism is connected with the staple pushing slider after moving toward the end effector along the axial direction through the space.

For example, one embodiment of the present disclosure provides a stapler wherein, after the staple ejection phase, the first drive mechanism is further configured to drive the closure mechanism away from the end effector to move the staple cartridge assembly and the anvil away from one another to open the end effector.

For example, an embodiment of the present disclosure provides a stapler further including a first elastic member connected to the closing mechanism, wherein, during the closing phase, the closing mechanism moves toward the end effector to close the end effector and elastically deform the first elastic member; after the staple pushing stage, the closing mechanism is moved away from the end effector by the elastically deformed first elastic member under the action of the elastic restoring force thereof.

For example, in the stapler provided by an embodiment of the present disclosure, when the stapler includes a second driving mechanism, the closing mechanism is a sleeve sleeved outside the second driving mechanism; the sleeve includes a catch structure protruding from an inner wall of the sleeve toward the inner side, the first resilient member being located on a side of the catch structure proximate the end effector to be configured to be compressed as the closure mechanism moves toward the end effector.

For example, in the stapler provided by an embodiment of the present disclosure, when the stapler includes a second driving mechanism, the closing mechanism is a sleeve sleeved outside the second driving mechanism; the sleeve includes a catch structure protruding from an inner wall of the sleeve toward the inner side, the first resilient member being located on a side of the catch structure proximate to the end effector to be configured to be stretched as the closure mechanism moves toward the end effector.

For example, in a stapler provided by an embodiment of the disclosure, the cartridge assembly and the anvil are closed to clamp a target tissue, and after the staple pushing assembly pushes the staples out of the cartridge assembly, the staples enter the target tissue to staple the target tissue; the stapler further includes a cutting device, and the first drive mechanism is further configured to drive the cutting device to cut the target tissue.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description only relate to some embodiments of the present invention and are not limiting on the present invention.

Fig. 1A is a schematic overall structure diagram of a stapler according to an embodiment of the present disclosure;

FIG. 1B is a top view of the stapler shown in FIG. 1A;

FIG. 2 is a schematic cross-sectional view taken generally along line B-B of FIG. 1B;

FIG. 3 is a schematic view of a portion of a stapler including an end effector and a closure mechanism according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of a portion of a stapler including a first drive mechanism, a second drive mechanism, a closure mechanism, and an end effector according to one embodiment of the present disclosure;

FIG. 5A is a generally schematic view of a detachable portion of a stapler according to one embodiment of the present disclosure;

FIG. 5B is a schematic cross-sectional view of a main body portion of a stapler coupled to a detachable portion according to one embodiment of the present disclosure;

FIG. 5C is a schematic view of an end of a main body portion of a stapler with a detachable portion attached thereto according to one embodiment of the present disclosure;

FIGS. 6A-6F are schematic illustrations of a detachable connection structure being connected to and disconnected from a closure mechanism during a closure procedure of a stapler according to an embodiment of the present disclosure;

FIG. 7 is a schematic view of the releasable attachment structure of the embodiment shown in FIGS. 6A-6F;

FIG. 8 is a schematic view of a portion of a stapler including a first resilient member according to an embodiment of the present disclosure;

FIG. 9 is a schematic view of a body portion of a stapler including a first drive mechanism according to one embodiment of the present disclosure;

FIG. 10A is a structural diagram of the staple cartridge assembly and the staple pushing drive mechanism;

FIG. 10B is a top view of the stapler shown in FIG. 10A in an anvil orientation;

FIG. 10C is a top view of the stapler shown in FIG. 10A in a cartridge orientation;

FIG. 10D is a schematic sectional view taken along line J-J in FIG. 10C;

FIG. 10E is a schematic sectional view taken along line H-H in FIG. 10B;

11A-11B are schematic views of a staple driving mechanism and a staple pusher shoe not connected to each other;

FIG. 12A is a schematic structural view of a nail pushing slider carrying a cutting knife;

FIG. 12B is a schematic cross-sectional view of a staple pusher shoe carrying a cutting blade;

FIG. 12C is a schematic view of the end of the staple pusher shoe adjacent the cutting drive mechanism;

FIG. 12D is a schematic view of the cutting drive mechanism;

FIG. 12E is a schematic view of the cutting drive mechanism and staple pusher shoe coupled to each other;

FIG. 13A is a schematic illustration of a staple pushing process;

FIG. 13B is a schematic view of the cutting blade not in contact with the target tissue during the staple pushing stage;

FIG. 13C is a schematic view of the staple pusher shoe carrying the cutting blade moving from the first end of the end effector to the second end of the end effector;

FIG. 13D is a schematic view of the cutting blade moving into contact with the target tissue during the staple pushing phase;

FIG. 14A is a first schematic view of a front swing drive assembly of a stapler according to an embodiment of the present disclosure;

FIG. 14B is a second schematic view of a front swing drive assembly of a stapler according to an embodiment of the present disclosure;

FIGS. 15A-15B are schematic views of a front swing drive member of a stapler according to one embodiment of the present disclosure;

FIG. 16A is a partial schematic view of a rear swing drive assembly of a stapler according to one embodiment of the present disclosure;

FIG. 16B is a partial schematic view of a manually adjustable drive mechanism of a stapler according to one embodiment of the present disclosure;

FIG. 17 is a schematic view of a staple pusher shoe positioned at a second end of an end effector prior to closure of the end effector in a stapler according to one embodiment of the present disclosure;

18A-18B are schematic views of a handle provided by an embodiment of the present disclosure;

FIG. 19 is an enlarged schematic view of the dial and bi-directional control button;

fig. 20 is a schematic view of a stapler body according to an embodiment of the disclosure.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without inventive step, are within the scope of protection of the invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. "inner", "outer", "upper", "lower", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

The drawings in this disclosure are not necessarily to scale, nor are the number of staple pockets in the cartridge for receiving staples as shown, and the specific size and number of each feature may be determined based on actual needs. The drawings described in this disclosure are merely schematic structural illustrations.

At least one embodiment of the present disclosure provides a stapler including an end effector, a closure mechanism, a staple pushing assembly, and a first drive mechanism. The end effector comprises a nail bin assembly and a nail anvil, and an anastomosis nail is arranged in the nail bin assembly; the closure mechanism is configured to drive the cartridge assembly and the anvil into apposition to close the end effector; the staple pushing assembly is configured to push out the staples from the staple cartridge assembly; the first drive mechanism is configured to: in the closing stage, the first driving mechanism is detachably connected with the closing mechanism to drive the closing mechanism to close the end effector; in a staple ejection stage following the closure stage, the first drive mechanism is disengaged from the closure mechanism and drives the staple ejection assembly to eject staples from the cartridge assembly. The stapler can be applied in the medical field, for example as a surgical instrument in a surgical procedure. During operation of the stapler, the closing phase and the staple pushing phase are independent of each other and do not interfere with each other, and the first drive mechanism is configured to drive the implementation of the two phases.

At least one embodiment of the present disclosure provides a stapler including an end effector, a closure mechanism, a first drive mechanism, and a cutting device. The end effector comprises a nail bin assembly and a nail anvil, and an anastomosis nail is arranged in the nail bin assembly; the closing mechanism is configured to drive the cartridge component and the nail anvil to be closed to clamp the target tissue; the staple pushing assembly is configured to push staples from the cartridge assembly into the target tissue to staple the target tissue; the first drive mechanism is configured to: in the closing stage, the first driving mechanism is detachably connected with the closing mechanism to drive the closing mechanism to close the end effector; in a staple pushing stage after the closing stage, the first driving mechanism is separated from the closing mechanism and drives the staple pushing assembly to push out the anastomosis staples from the staple cartridge assembly; the cutting device is configured to cut the target tissue under the driving of the first driving mechanism in a cutting stage after the target tissue is entirely sutured.

At least one embodiment of the present disclosure provides a stapler including an end effector, a closure mechanism, a staple pushing assembly, and a locking mechanism. The end effector comprises a nail bin assembly and a nail anvil, and anastomotic nails are arranged in the nail bin assembly; in an initial state, the end effector is in an open state; in a closing stage, the closure mechanism is configured to drive the staple cartridge assembly and the anvil into apposition to close the end effector to clamp the target tissue; a staple pushing stage subsequent to the closing stage, the staple pushing assembly being configured to push the staples out of the cartridge assembly to staple the target tissue; a locking mechanism configured to define the closure mechanism in a first position to maintain the closure mechanism in a closed state of the end effector during the staple ejection phase and configured to define the closure mechanism in a second position to maintain the end effector in the open state in the initial state.

At least one embodiment of the present disclosure provides a stapler including an end effector, a closure mechanism, a staple pushing assembly, a first drive mechanism, and a swing mechanism. The end effector comprises a nail bin assembly and a nail anvil, and anastomotic nails are arranged in the nail bin assembly; a closure mechanism configured to drive the staple cartridge assembly and the anvil into apposition to close the end effector to clamp the target tissue; a staple pusher assembly configured to push said staples out of said cartridge assembly; the first drive mechanism is configured to: during a closing stage, the first driving mechanism is detachably connected with the closing mechanism to drive the closing mechanism to close the end effector; in a staple pushing stage following the closing stage, the first drive mechanism disengages from the closing mechanism and drives the staple pushing assembly to push the staples out of the cartridge assembly to staple the target tissue; the swing mechanism comprises a front swing driving component and a rear swing driving component, and the front swing driving component and the rear swing driving component are configured to drive the end effector to swing; the stapler comprises a main body part and a detachable part, wherein the detachable part is detachably connected with the main body part; the end effector and the front swing drive assembly are located on the detachable portion, and the first drive mechanism and the rear swing drive assembly are located on the main body portion; the detachable portion is detachably coupled with the main body portion to detachably couple the front swing drive assembly with the rear swing drive assembly.

At least one embodiment of the present disclosure provides a stapler including an end effector, a closure mechanism, and a staple pushing assembly. The end effector comprises a nail bin assembly and a nail anvil, and anastomotic nails are arranged in the nail bin assembly; a closure mechanism configured to drive the staple cartridge assembly and the anvil into apposition during a closure phase to clamp a target tissue, the end effector having a first end proximal to the closure mechanism and a second end distal to the closure mechanism; a staple pusher assembly is configured to push the staples from the cartridge assembly into the target tissue from the second end to the first end and to staple the target tissue from the second end to the first end in a staple pushing phase subsequent to the closing phase.

At least one embodiment of the present disclosure provides a handle configured to be removably coupled to a removable portion comprising an end effector comprising a staple cartridge assembly and an anvil, wherein the handle comprises a dial switch comprising a dial disposed on a first surface of the handle, the dial configured to be toggled to rotate to control a direction and angle of oscillation of the end effector. The handle may be used in a stapler that may be used as a medical instrument, such as a surgical instrument, for holding and stapling and severing target tissue.

At least one embodiment of the present disclosure provides a stapler main body, which includes any one of the handles provided by the embodiments of the present disclosure, and a driving part connected with the handle; the extending direction of the whole driving part is an axial direction, and the axial direction is intersected with the extending direction of the handle; one end of the driving part, which is far away from the handle, is detachably connected with the detachable part and comprises an electric motor and a rear swing driving component; the electric motor is in signal connection with the dial switch, and the dial switch controls the work of the electric motor; the rear swing driving member is connected with the electric motor and extends along the axial direction, and the electric motor is configured to rotate under the control of the dial switch to drive the rear swing driving member to move along the axial direction to drive the end effector to swing.

At least one embodiment of the present disclosure provides a stapler including any one of the stapler bodies provided by the embodiments of the present disclosure, and the detachable portion. The detachable portion is detachably connected with the main body portion, and the detachable portion further comprises a front swing driving assembly; the front swing driving assembly is connected with the end effector, the detachable part is detachably connected with the anastomat body so that the front swing driving assembly is detachably connected with the rear swing driving member, and the front swing driving assembly drives the end effector to swing under the driving of the rear swing driving member.

Illustratively, fig. 1A is a schematic overall structural diagram of a stapler 100 according to an embodiment of the present disclosure, fig. 1B is a top view of the stapler shown in fig. 1A, fig. 2 is a schematic overall sectional diagram taken along a line B-B in fig. 1B, fig. 3 is a schematic partial diagram of a stapler according to an embodiment of the present disclosure including an end effector and a closing mechanism, and fig. 4 is a schematic partial diagram of a stapler according to an embodiment of the present disclosure including a first driving mechanism, a second driving mechanism, a closing mechanism and an end effector. The stapler 100 may be applied in the medical field, and the presently disclosed embodiments are described by way of example of the stapler 100 being used as a surgical instrument during a surgical procedure.

Referring to fig. 1-4, stapler 100 includes an end effector 11, a closure mechanism 2, a staple pushing assembly, and a first drive mechanism 1010. The end effector 11 includes a cartridge assembly 11 and an anvil 12, and staples are disposed in the cartridge assembly 11. The closure mechanism 2 is configured to drive the cartridge assembly 11 and anvil 12 into apposition to close the end effector 11; staple pusher assembly 11 is configured to push staples out of cartridge assembly 11. The first drive mechanism 1010 is configured to: in the closing stage, the first driving mechanism 1010 is detachably connected with the closing mechanism 2 to drive the closing mechanism 2 to close the end effector 11 to clamp the target tissue; in the staple pushing stage, which follows the closing stage, the first drive mechanism 1010 disengages from the closing mechanism 2 and drives the staple pushing assembly to push out the staples from the cartridge assembly to drive the staples into the target tissue to staple the target tissue. The target tissue is, for example, a target tissue to be sutured and cut in an operation, for example, a human or animal tissue. In the operation process of the stapler 100, the closing stage and the nail pushing stage are independent from each other and do not interfere with each other, and the first driving mechanism 1010 is configured to drive the two stages, so that the driving structure is greatly simplified, the overall structure of the stapler 100 is effectively simplified, the space is saved, the radial size of the stapler 100 is favorably reduced, the stapler is easy to enter an operation object such as a human body in the operation process, and the injury to the operation object is reduced; in addition, the simplification of the driving structure makes the operation process of the stapler 100 easier to be smoothly realized, which has a significant contribution to improving the operation reliability and also reduces the design difficulty of the control system for controlling the operation process of the stapler 100.

For example, the cartridge module 11 includes a first end proximate to the closure mechanism, the anvil 12 includes a first end proximate to the closure mechanism, and the first end of the cartridge module 11 is movably coupled to the first end of the anvil 12; the closure mechanism is configured to apply pressure to a first end of the cartridge assembly 11 and a first end of the anvil 12 to bring them into close apposition with each other. The anvil 12 comprises a working surface facing the cartridge assembly 11, the cartridge assembly 11 comprises a staple ejection surface opposite the working surface, and the closure mechanism 2 is configured to drive the working surface and the staple ejection surface towards each other for apposition.

In the embodiment illustrated in FIGS. 1-4, at least one staple pocket 110 is provided on the staple cartridge, each staple pocket having an opening facing the anvil 12. In some examples, the opening of each staple pocket may be independently square, circular, triangular, etc. in shape and independently configured to: in the staple pushing phase, staples contained in the staple pockets are allowed to be ejected through the openings thereof. Embodiments of the present disclosure are not limited in this regard.

In some examples, the openings of the plurality of staple pockets may be arranged uniformly on the staple ejection face of the staple cartridge or in a patterned manner. For example, the openings of the plurality of staple channels may be arranged to form at least one line, rectangle, triangle, diamond, circle, etc. on the staple ejection face of the staple cartridge. Embodiments of the present disclosure are not limited in this regard.

In some examples, the staples may be formed from materials that are compatible with or at least not harmful to the human body. For example, the staple material may include medical grade stainless steel, titanium alloys, biodegradable magnesium alloys, and the like. Further, for example, at least a portion of the surface of the staple may have a passivation layer, plating or coating, or the like, that is compatible with or at least non-harmful to the human body. The embodiments of the present disclosure are not limited in this regard.

In some examples, the anvil 12 may be formed of a rigid material that is compatible with or at least harmless to the human body, for example. The material of the anvil 12 may include, for example, a metallic material such as medical stainless steel, titanium alloy, cobalt alloy, etc.; or non-metallic materials such as medical ceramics, hard plastics and the like. For example, at least a portion of the inner and/or outer surfaces of the anvil 12 may also have a passivation layer, plating, coating, or the like thereon that is compatible with or at least non-harmful to the human body. The embodiments of the present disclosure are not limited in this regard.

For example, as shown in fig. 2 and 4, the stapler 100 further comprises a second driving mechanism 20, wherein the second driving mechanism 20 is connected with the first driving mechanism 10, is detachably connected with the closing mechanism in the closing stage and is configured to move towards the end effector 1 under the driving of the first driving mechanism 10 so as to enable the closing mechanism to be contacted with the cartridge component 11 and the anvil 12 and apply pressure to the cartridge component 11 and the anvil 12 to close the end effector 1; the second drive mechanism 20 is also configured to disengage from the closure mechanism during the staple ejection stage and drive the staple ejection assembly to eject the staples from the cartridge assembly 11 under the drive of the first drive mechanism 10.

Fig. 5A is an overall schematic view of a detachable part 3 of a stapler 100 according to an embodiment of the disclosure, and as shown in fig. 5A, the stapler 100 includes a main body part 4 and a detachable part 3, wherein the detachable part 3 is detachably connected to the main body part 4; the first drive mechanism 10 is located on the main body portion 4, the second drive mechanism 20, the closure mechanism, the staple pushing assembly and the end effector 1 are located on the detachable portion 3, and the detachable portion 3 is connected to the main body portion 4 so that the second drive mechanism 20 is detachably connected to the first drive mechanism 10. The detachable part 3 is designed to be part of a surgical object, such as a human body, which is to be accessed during a surgical procedure, while the main part 4 does not need to be accessed inside the surgical object, and the detachable part 3 can be replaced, for example, by replacing one detachable part 3 per procedure without replacing the main part 4 with a hostile drive mechanism, which results in significant cost savings. Compared with a detachable structure which can be detached from the handle, the detachable part 3 reduces the structure and the volume of the detachable part, further reduces disposable parts, further reduces the cost and improves the reutilization rate of the main body part.

For example, as shown in fig. 2 and 4, the first driving mechanism 10 and the second driving mechanism 20 extend in an axial direction, the first driving mechanism 10 includes a first end that is away from the end effector 1 in the axial direction and a second end opposite to the first end, and the second driving mechanism 20 includes a first end that is close to the first driving mechanism 10 in the axial direction and a second end that is away from the first driving mechanism 10 in the axial direction. Fig. 5B is a schematic cross-sectional view of the main body portion 4 of the stapler 100 connected to the detachable portion 3 according to an embodiment of the present disclosure, and fig. 5C is a schematic cross-sectional view of an end portion of the main body portion 4 of the stapler 100 connected to the detachable portion 3 according to an embodiment of the present disclosure. For example, as shown in FIGS. 5B-5C, the main body portion 4 and the detachable portion 3 may take the form of a plug-in connection. When the main body part 44 is connected with the detachable part 3, the first end of the second driving mechanism 20 is provided with a groove 200, the second end of the first driving mechanism 10 is provided with a protruding structure, the protruding structure is configured to be inserted into the groove, and then after the detachable part 3 is rotated relative to the main body part 4 along the positive direction, for example, 90 degrees, the protruding structure of the second end of the first driving mechanism 10 is blocked by the groove wall of the groove of the first end of the second driving mechanism 20 so as not to move relative to the second driving mechanism 20 along the axial direction, so that the protruding structure of the second end of the first driving mechanism 10 is locked at the position, and the connection of the second end of the first driving mechanism 10 and the first end of the second driving mechanism 20 with the first driving mechanism 10 is realized; when it is desired to remove the detachable part 3 from the main part 4, the locking of the protruding formation at the second end of the first drive mechanism 10 is released by rotating the detachable part 3 relative to the main part 4 in the opposite direction to the forward direction, e.g. by 90 °, thereby detaching the first drive mechanism 10 from the second drive mechanism 20, i.e. detaching the detachable part 3 from the main part 4. The detachable connection mode is simple to operate and easy to control, and is favorable for stability of equipment during use and installation. Of course, the main body portion 4 and the detachable portion 3 may also be connected by various connection methods such as screw connection or clamping connection, and the second end of the first driving mechanism 10 and the first end of the second driving mechanism 20 may also be connected by detachable connection methods such as other clamping connection, hook connection, magnetic attraction connection, which is not limited in this disclosure.

For example, during a closing phase in which the first drive mechanism 10 drives the closing mechanism to close the end effector 1 and a staple pushing phase in which the staple pushing assembly is driven to push staples out of the cartridge assembly 11, the first drive mechanism 10 is moved towards the end effector 1. For example, the second drive mechanism 20 is also configured to disengage from the closure mechanism during the staple ejection stage and drive the staple ejection assembly to eject the staples from the cartridge assembly 11 under the drive of the first drive mechanism 10. For example, in the closing stage and the staple pushing stage, the second drive mechanism 20 is also moved axially toward the end effector 1 by the drive of the first drive mechanism 10. For example, the first drive mechanism 10 and the second drive mechanism 20 both move substantially linearly in the axial direction during the closing phase and the staple pushing phase. For example, the first driving mechanism 10 is a single driving rod, so that the single driving rod moves along the axial direction to drive the completion of the closing stage and the nail pushing stage, which greatly simplifies the driving structure, thereby effectively simplifying the overall structure of the stapler 100, saving space, and facilitating the reduction of the size of the stapler 100, thereby facilitating the entry into the surgical object, such as a human body, during the surgical procedure and reducing the damage to the surgical object; in addition, the simplification of the driving structure makes the operation process of the stapler 100 easier to be smoothly realized, which has a significant contribution to improving the operation reliability and also reduces the design difficulty of the control system for controlling the operation process of the stapler 100.

For example, stapler 100 further includes separable connecting structure 6, separable connecting structure 6 being configured to connect with the closure mechanism and second drive mechanism 20 during the closure phase to move toward end effector 1 in response to movement of second drive mechanism 20 to drive the closure mechanism toward end effector 1 to close end effector 1, and separable connecting structure 6 being configured to separate from the closure mechanism after the closure mechanism is closed. The extending directions of the first driving mechanism 10 and the second driving mechanism 20 are axial directions, the direction perpendicular to the axial directions is a longitudinal direction, and the separable connecting structure 6 comprises a first end and a second end in the longitudinal direction; the second drive mechanism 20 comprises a first connection structure and the closure mechanism 2 comprises a second connection structure.

For example, during the process in which separable coupling structure 6 drives the closure mechanism toward end effector 1, a first end of separable coupling structure 6 is coupled to second drive mechanism 20 via a first coupling structure, and a second end of separable coupling structure 6 is coupled to the closure mechanism via a second coupling structure; the separable connecting structure 6 is configured to be longitudinally movable relative to the first and second connecting structures to separate the second end of the separable connecting structure 6 from the closure mechanism or to separate the first end of the separable connecting structure 6 from the second drive mechanism 20.

For example, stapler 100 further includes a decoupling drive mechanism configured to apply a driving force in the longitudinal direction to separable connecting structure 6 after end effector 1 is closed to cause separable connecting structure 6 to move in the longitudinal direction under the driving force to decouple the second end of separable connecting structure 6 from the closing mechanism or decouple the first end of separable connecting structure 6 from second drive mechanism 20.

Fig. 6A-6F are schematic views of a surgical stapler 100 according to one embodiment of the present disclosure, wherein the detachable attachment structure 6 is attached to and detached from the closure mechanism during a closing procedure. Referring to fig. 6A to 6E, for example, the closing mechanism is a sleeve 2 sleeved outside the second driving mechanism 20, the second connecting structure is a connecting hole 23 penetrating through a wall of the sleeve 2, and a second end of the separable connecting structure 6 is detachably inserted into the connecting hole 23. Fig. 7 is a schematic view of the separable coupling structure 6 in the embodiment shown in fig. 6A-6F, and as shown in fig. 7, in this embodiment, the separable coupling structure 6 is a slider, and the first coupling structure is a groove 203 provided in the second driving mechanism 20. Of course, in other embodiments, the separable connecting structure 6 may be of other types, and is not limited to the slider; the first connecting structure is not limited to the groove, and the second connecting structure is not limited to the connecting hole 23 penetrating the cylinder wall of the sleeve 2, as long as the above-described functions can be achieved. The closing mechanism is not limited to the sleeve 2, and may be any other mechanism that can drive the end effector 1 to close and open under the driving of the first driving mechanism 10.

The sleeve 2 may be formed of a rigid material that is compatible with or at least not harmful to the human body, for example. For example, the material of the sleeve 2 may include, for example, a metallic material such as medical stainless steel, titanium, a titanium alloy, a cobalt alloy, or the like; or non-metallic materials such as medical ceramics, hard plastics and the like. Further, at least a portion of the inner and/or outer surface of the sleeve 2 may also have a passivation layer, plating or coating or the like thereon that is compatible with or at least harmless to the human body. The embodiments of the present disclosure are not limited in this regard.

For example, the sleeve 2 is a hollow arc-shaped cylinder having a circular cross-section, so as to reduce contusion of the tissue of the surgical object when the sleeve 2 enters the surgical object, such as a human body, during surgery. The sleeve 2 has a cylindrical wall and a cavity surrounded by the cylindrical wall, in which cavity the second drive means 20 etc. are located during the closing phase in order to minimize the structures located outside the sleeve 2 and to minimize contusion of the tissue of the surgical object when the sleeve 2 enters the body of the surgical object during the operation. The end of the sleeve 2 remote from the end effector 1 is closed and the other end close to the end effector 1 is open.

As shown in fig. 7, during the closing phase, the first end of the separable connector structure 6 is connected to the second drive mechanism 20 through the connecting hole 23 on the sleeve 2, and the second end of the separable connector structure 6 is connected to the sleeve 2 through the recess 203 of the second drive mechanism 20, so that the closable mechanism is connected to the second drive mechanism 20 through the separable connector structure 6, and thus, the sleeve 2 moves toward the end effector 1 with the movement of the second drive mechanism 20 to drive the sleeve 2 to move toward the end effector 1. Referring to FIG. 3, the cartridge assembly 11 includes a first end adjacent the sleeve 2, and the anvil 12 includes a first end adjacent the sleeve 2; during the closing phase, the second driving mechanism 20 is driven by the first driving mechanism 10 to move toward the end effector 1 and the sleeve 2 is driven to move toward the end effector 1, so that the sleeve 2 is sleeved on the first end of the cartridge assembly 11 and the first end of the anvil 12 to apply pressure to the first end of the cartridge assembly 11 and the first end of the anvil 12 to close the end effector 1, and thus, the end effector 1 holds the target tissue.

The separable connecting structure 6 of fig. 6A-6F is removably connected to the second drive mechanism 20 and to the closure mechanism. As shown in fig. 7, the separable connecting structure 6 includes a main body portion 61 and a first boss 611 protruding from a first surface of the main body portion 61, the first surface of the main body portion 61 facing the recess 203, the first boss 611 being located at a first end of the separable connecting structure 6; the first boss 611 includes a first inclined surface 6111, and the first inclined surface 6111 intersects with the axial direction and the longitudinal direction. As shown in fig. 6E, the anastomat 100 further comprises a fixing bracket 8, the closing mechanism is arranged on the fixing bracket 8, and the fixing bracket 8 comprises a first sliding groove 81 and a second sliding groove 82; the first chute 81 extends in the axial direction; the second slide groove 82 extends in the axial direction, communicates with the first slide groove 81, is located on a side of the first slide groove 81 close to the end effector 1, and includes a first groove wall and a second groove wall that are opposed to each other in the lateral direction; the transverse direction is vertical to the axial direction and the longitudinal direction, and the first groove wall is used as the separation driving structure; the face of the first groove wall facing the separable connecting structure 6 has a first barrier slope 801, the first barrier slope 801 intersecting with the axial direction and the longitudinal direction.

In the closing stage, one end of the main body portion 61 of the separable coupling structure 6 is located in the coupling hole 23 of the sleeve 2 to drive the sleeve 2 to move in the axial direction, and the first boss 611 is partially embedded in the groove 203 to move the separable coupling structure 6 toward the end effector 1 with the movement of the second driving mechanism 20. The detachment driving structure is located on a side of the detachable connection structure 6 close to the end effector 1, the first barrier inclined surface 801 contacts the first inclined surface 6111 of the first boss 611 after the detachable connection structure 6 drives the sleeve 2 to move axially toward the end effector 1 to close the end effector 1 to apply a resistance force in the axial direction and a driving force in the longitudinal direction to the first inclined surface 6111, the first barrier inclined surface 801 is parallel to the first inclined surface 6111, and the detachable connection structure 6 moves in the longitudinal direction under the driving force in the longitudinal direction to detach the second end of the detachable connection structure 6 from the closing mechanism. In this embodiment, for example, during the closing stage, the first projection 611 of the separable connector 6 is spaced apart by a sliding distance between an end surface of the groove 203 that is at least partially located within the longitudinal direction and a bottom surface of the groove 203 that faces the end surface, so that during the staple pushing stage, the separable connector 6 can slide in the longitudinal direction towards the bottom surface of the groove 203 to be separated from the sleeve 2. That is, after the separable connecting structure 6 drives the closing mechanism to move toward the end effector 1 in the axial direction to close the end effector 1, the separable connecting structure 6 moves in the longitudinal direction by the driving force in the longitudinal direction by contacting the first inclined surface 6111 to apply the resistance force in the axial direction and the driving force in the longitudinal direction to the first inclined surface 6111.

As shown in fig. 6F, after the closing stage, at least a portion of the body portion 61 of the separable connecting structure 6 in the axial direction enters the second chute 82 to bring the first barrier ramp 801 into contact with the first ramp 6111. In this way, the limited space in the sleeve 2 is fully utilized to realize that the separable connecting structure 6 is connected with the second driving mechanism 20 and the sleeve 2 in the closing stage and is separated from the sleeve 2 in the nail pushing stage after the closing stage, so that when the first driving mechanism 10 and the second driving mechanism 20 drive the nail pushing assembly to push nails in the nail pushing stage, the sleeve 2 does not move along with the axial movement of the second driving mechanism 20 any more, and the stability of the closed end effector 1 is maintained.

For example, the thickness of the first boss 611 in the lateral direction is larger than the depth of the groove 203 in the lateral direction, so that the main body portion 61 of the separable connecting structure 6 is located outside the groove 203, facilitating the main body portion of the separable connecting structure 6 to enter the second chute 82.

For example, the first inclined surface 6111 exceeds the groove 203 in the longitudinal direction, i.e., the first inclined surface 6111 is located outside the groove 203 in the longitudinal direction, so as to ensure that the main body portion of the separable connecting structure 6 can contact with the first barrier inclined surface 801 after entering the second sliding groove 82, and ensure the reliability of the normal operation of the stapler 100 in the closing stage.

For example, in the embodiment shown in fig. 6A to 6F, the included angle between the first inclined surface 6111 and the axial direction, which is close to the end effector 1, is an obtuse angle, and the included angle is the included angle between the first inclined surface 6111 and the central axis of the sleeve 2. The separable connecting structure 6 is moved away from the closing mechanism along the longitudinal direction under the action of the driving force along the longitudinal direction to be separated from the closing mechanism, so that in the nail pushing stage, the separable connecting structure 6 is positioned in the cavity of the sleeve 2, and the obvious protruding structure outside the sleeve 2 is avoided, so that contusion of tissues of an operation object caused by the protruding structure outside the sleeve 2 when the sleeve 2 enters the operation object such as a human body in the operation is avoided or reduced.

Of course, in other embodiments, the first inclined surface 6111 may be designed to have an acute angle with the axial direction, which is closer to the end effector 1, and the separable connector 6 may be moved longitudinally closer to the sleeve 2 to separate from the second drive mechanism 20 by the driving force in the longitudinal direction, i.e., the driving force is in the opposite direction to the driving force in the embodiment shown in fig. 6A-6F, and the separable connector 6 is moved in the opposite direction to the separable connector 6 in the embodiment shown in fig. 6A-6F. In this case, the separable connector structure 6 is located on the sleeve 2 without moving with the movement of the second drive mechanism 20 in the staple pushing stage. That is, in other embodiments, the first end of the separable connector 6 is disengaged from the second drive mechanism 20, and after the sleeve 2 drives the end effector 1 to close, the separable connector 6 is disengaged from the second drive mechanism 20 to stop driving the closing mechanism to move.

In some embodiments, for example, as in fig. 7, the separable connecting structure 6 further comprises a second boss 612. The second boss 612 protrudes from the second surface 05 of the main body portion and is located at the first end of the separable connecting structure 6, and includes a second inclined surface 6121 intersecting with the axial direction and the longitudinal direction, and the second surface 05 is opposite to the first surface 01; the second groove wall also serves as a separation driving structure and includes a second barrier inclined surface 802 facing the separable connecting structure 6, the second barrier inclined surface 802 being configured to contact with the second inclined surface 6121 to apply a resistance force in the axial direction and a driving force in the longitudinal direction to the second inclined surface 6121 and being parallel to the second inclined surface 6121; after the closing phase, at least part of the body portion of the separable connecting structure 6 in the axial direction enters the second runner 82, and the first and

second bosses

611, 612 are blocked by the first and second groove walls outside the second runner 82 to bring the first barrier bevel 801 into contact with the first inclined face 6111 and the second barrier bevel 802 into contact with the second inclined face 6121. The second boss 612 can increase the symmetry of the separable connecting structure 6, improve the structural stability of the separable connecting structure 6, increase the magnitude of the driving force, and facilitate ensuring the reliability of the separation of the separable connecting structure 6 from the sleeve 2. For example, first barrier bevel 801 and first bevel 6111 complement each other upon contact; after the second barrier bevel 802 contacts the second bevel 6121, the two are complementary.

For example, as shown in fig. 7, the first boss 611 further includes a first platform having a first horizontal surface 6110, the first horizontal surface 6110 intersects and is connected to the first inclined surface 6111, and the first platform can increase the mechanical strength of the first boss 611, so that the first boss 611 is more stable in structure and position when located in the groove 203. Similarly, the second boss 612 further includes a second platform portion having a second horizontal plane intersecting and connected to the second inclined surface 6121, which can increase the mechanical strength of the second boss 612, and in the case where the first boss 611 has the first platform portion, increase the symmetry of the separable joint structure 6 to make the structure thereof more stable.

For example, the width of the first slide groove 81 in the lateral direction is larger than the width of the second slide groove 82 in the lateral direction, so that only the main body portion of the separable connecting structure 6 can enter the second slide groove 82, and the first boss 611 and the second boss 612 cannot enter the second slide groove 82, thereby achieving the above-described driving of the separable connecting structure 6 to be separated from the sleeve 2 in the longitudinal direction.

For example, in some embodiments, the width of the second sliding slot 82 in the transverse direction is larger than the width of the main body part and smaller than the sum of the width of the first boss 611, the width of the main body part and the width of the second boss 612, so as to minimize the width of the first sliding slot 81 while ensuring that sufficient space is left for the first boss 611 and the second boss 612 when the main body part of the separable connecting structure 6 slides in the first sliding slot 81, which is beneficial for stabilizing the position of the main body part of the separable connecting structure 6 when sliding in the first sliding slot 81, and is beneficial for improving the mechanical strength and the mechanical stability of the fixing bracket 8, thereby improving the stability of the entire stapler 100.

For example, in other embodiments, the width of the first sliding groove 81 in the transverse direction is greater than the sum of the width of the first boss 611 in the transverse direction, the width of the main body portion in the transverse direction, and the width of the second boss 612 in the transverse direction, so as to ensure that when the main body portion of the separable connector structure 6 slides in the first sliding groove 81, sufficient space is left for the first boss 611 and the second boss 612, thereby ensuring that the main body portion of the subsequent separable connector structure 6 smoothly enters the second sliding groove 82.

For example, the length of the second sliding slot 82 in the axial direction is smaller than that of the first sliding slot 81 in the axial direction, so as to minimize the size of the slot on the fixing bracket 8, which is beneficial to improving the mechanical strength and the mechanical stability of the fixing bracket 8, and thus improving the stability of the whole anastomat 100.

The above embodiments are exemplary, and in other embodiments, the separable connecting structure 6 can also be fixedly connected with one of the second drive mechanism 20 and the closure mechanism, and detachably connected with the other of the second drive mechanism 20 and the closure mechanism.

As shown in fig. 3, for example, one end of the end effector 1 close to the sleeve 2 includes a guide slope 101, the guide slope 101 has an angle with the axial direction and the longitudinal direction, the guide slope 101 includes a first end close to the sleeve 2 in the axial direction and a second end far from the sleeve 2, and the first end is also closer to the sleeve 2 than the second end in the longitudinal direction. In the closing stage, the sleeve 2 contacts the guiding inclined plane 101 before contacting the cartridge assembly 11 and the anvil 12 and slides along the guiding inclined plane 101 towards the cartridge assembly 11 and the anvil 12, so that it is easier to realize that the sleeve 2 is sleeved on the first end of the cartridge assembly 11 and the first end of the anvil 12 to apply pressure to the first end of the cartridge assembly 11 and the first end of the anvil 12 so as to close the end effector 1, and the reliability of normal operation of the closing stage is increased.

For example, the wall of the cartridge 2 can include a curved surface, such as the curved surface described above, and as shown in FIG. 3, at least one of the first end of the cartridge assembly 11 and the first end of the anvil 12, such as the first end of the anvil 12, can include a curved force-bearing surface 102, and the curved force-bearing surface 102 can be configured to contact the cartridge 2 and bear the pressure applied by the cartridge 2, so as to increase the force-applying area of the cartridge 2 on the end effector 1 during the closing stage, facilitate driving the end effector 1 to close and stabilize the closed end effector 1, and reduce the slippage of the target tissue. For example, the sleeve 2 comprises an inner surface in contact with the force-bearing surface, the inner surface being curved; the curvature of the stress surface is equal to that of the inner surface of the sleeve 2, so that the force application area of the sleeve 2 on the end effector 1 in the closing stage is further increased, the end effector 1 is driven to be closed, the stability after the end effector 1 is closed is facilitated, and the slippage of target tissues is reduced.

Fig. 13A is a schematic view of the staple pushing process. For example, referring to FIG. 13A, the staple pushing assembly includes a staple pusher shoe 700, a staple pusher shoe 60, and a staple driving mechanism 40. Pusher plate 700 is configured to apply pressure to the staples to push the staples out of the cartridge; staple pusher shoe 60 is configured to apply pressure to staple pusher sheet 700 to drive staple pusher sheet 700 to apply staple pushing pressure to the staples; the staple driving mechanism 40 is configured to move in the axial direction under the driving of the first and second driving mechanisms 20 to drive the staple sliders 60 to move in the axial direction, so that the staple sliders 60 are in contact with the staple pusher 700 to apply the staple pushing pressure to the staple pusher 700.

For example, in some embodiments, before the staple pushing operation, the staple driving mechanism 40 is connected to the second driving mechanism 20 and moves to contact with the staple pushing slider 60 along with the movement of the second driving mechanism 20, which is more beneficial to the reliability of the subsequent driving operation of the staple driving mechanism 40 by the second driving mechanism 20 and the operational stability of the stapler 100 during the staple pushing operation, and reduces the design difficulty.

For example, in other embodiments, the staple driving mechanism 40 is spaced from the second driving mechanism 20 on a side of the second driving mechanism 20 adjacent to the staple pushing slider 60 prior to staple pushing, i.e., when the staple driving mechanism 40 is not coupled to the second driving mechanism 20, the second driving mechanism 20 is coupled to the staple pushing slider 60 after moving axially toward the end effector 1 through the gap.

For example, after the staple ejection stage, the first drive mechanism 10 is also configured to drive the closure mechanism away from the end effector 1 to move the cartridge assembly 11 and anvil 12 away from each other to open the end effector 1. That is, a closure mechanism, such as a sleeve 2, is moved away from the end effector 1 to release a first end of the anvil 12 and a first end of the cartridge assembly 11 to open the anvil 12 and cartridge assembly 11.

Fig. 8 is a schematic view of a portion of a stapler 100 including a first elastic member 71 according to an embodiment of the disclosure. For example, as shown in fig. 8, the stapler 100 further includes a first elastic member 71, the first elastic member 71 being connected to the closing mechanism. In the closing phase, the closing mechanism is moved towards the end effector 1 to close the end effector 1 and elastically deform the first elastic member 71; after the staple pushing stage, the closing mechanism is moved away from the end effector 1 by the elastically deformed first elastic member 71 under its elastic restoring force.

The first elastic member 71 is deformed by an external load, and the deformation is completely disappeared and the original shape and size are completely restored after the external load is removed. For example, the material of the first elastic member 71 may include some resin or natural material with elastic compression deformation property, such as but not limited to thermoplastic elastomer (TPE), Thermoplastic Polyurethane (TPU), thermoplastic polyester elastomer (TPEE), and the like. The first elastic member 71 may be formed as, for example, a block-shaped elastic member or a hollow cylindrical elastic member. As another example, the resiliently compressively deforming structure may include some structure having resiliently compressively deforming properties, such as a compression spring, a zigzag spring, a accordion-leaf spring, a lantern-skeleton spring, and the like. The resiliently compressively deforming structure may be formed of a material such as, but not limited to, metal, plastic, or ceramic. Embodiments of the present disclosure are not limited in this regard.

For example, in the embodiment shown in fig. 8, the sleeve 2 includes a catch structure 24 protruding from the inner wall of the sleeve 2 toward the inside, and the first elastic member 71 is located on the side of the catch structure 24 close to the end effector 1 to be configured to be compressed as the closing mechanism moves toward the end effector 1, so as to fully utilize the limited space inside the sleeve 2 to achieve compression and limiting of the first elastic member 71.

For example, in other embodiments, the first elastic member 71 is located on a side of the catch structure 24 close to the end effector 1 to be configured to be stretched as the closing mechanism moves toward the end effector 1, and thus, the same or similar technical effects as those of fig. 8 can also be achieved.

Fig. 9 is a schematic view of the main body portion 4 of a stapler 100 including a first driving mechanism 10 according to an embodiment of the disclosure, and as shown in fig. 9, the stapler 100 further includes an electric driving mechanism, the electric driving mechanism is located in the main body portion 4, and the main body portion 4 includes, for example, a handle 9 and a driving portion 99 connected to the handle 9; for example, an electric driving mechanism is located at the handle 9 or/and the driving portion 99, and a first end of the first driving mechanism 10 is connected to the electric driving mechanism, and the electric driving mechanism drives the first driving mechanism 10 to move along the axial direction. For example, the electric driving mechanism comprises an electric motor and a worm wheel linkage mechanism which moves under the drive of the electric motor, and the electric driving mechanism can be designed according to the conventional technology by those skilled in the art, and the structure of the electric driving mechanism is not limited by the present disclosure.

For example, stapler 100 further includes a cutting device. The cartridge assembly 11 and the anvil 12 are closed to clamp the target tissue; after the staple pushing assembly pushes out the staples from the staple cartridge assembly 11, the staples enter target tissues to suture the target tissues; the first drive mechanism 10 is also configured to drive the cutting device to cut the target tissue. Namely, the first driving mechanism 10 is also configured to drive the cutting device to cut the target tissue, so as to further simplify the driving structure, save space, and reduce the volume of the stapler 100, thereby facilitating the entry into the surgical object, such as a human body, during the surgical procedure and reducing the damage to the surgical object; in addition, the simplification of the driving structure makes the operation process of the stapler 100 easier to be smoothly realized, which has a significant contribution to improving the operation reliability and also reduces the design difficulty of the control system for controlling the operation process of the stapler 100. For example, the target tissue is sutured after the entire target tissue is sutured. Of course, the target tissue may also be subjected to a side-stitching and side-cutting, i.e., for each portion of the target tissue, the portion is stitched first and then cut. The specific manner of suturing and cutting will be described hereinafter.

For example, the stapler 100 further includes a cutting drive mechanism configured to drive the cutting device to cut the target tissue under the drive of the first drive mechanism 10. For example, the staple pushing drive mechanism 40 may be reused as a cutting drive mechanism to simplify construction and save space. The second drive mechanism 20 is also configured to be coupled to the cutting drive mechanism to drive the cutting drive mechanism to move during the cutting phase, i.e., in the case where the staple driving mechanism 40 is to be reused as the cutting drive mechanism, the second drive mechanism 20 is also configured to be coupled to the staple driving mechanism 40 to drive the staple driving mechanism 40 to move during the cutting phase.

For example, the cutting device includes a blade carrying member and a cutting blade 605, the cutting blade 605 is movably connected to the blade carrying member, and the cutting driving mechanism is configured to drive the blade carrying member to move so as to move the cutting blade 605. For example, the staple pusher shoe 60 reuses as a knife carrying component to further simplify the structure, save space, and facilitate the driving and control of the staple pushing and cutting stages.

The staple pushing and cutting stages of the stapler 100 will now be described by way of example in the case where the staple pushing drive mechanism 40 is reused as the cutting drive mechanism.

During a closing phase in which the first driving mechanism 10 drives the closing mechanism to close the end effector 1 and a staple pushing phase in which the staple pushing assembly is driven to push staples out of the staple cartridge assembly 11, the first driving mechanism 10 moves toward the end effector 1; for example, during the cutting phase, the first drive mechanism 10 is moved away from the end effector 1 to drive the cutting drive mechanism to move away from the end effector 1.

FIG. 10A is a structural diagram of the cartridge module 11 and the cutting drive mechanism. Referring to fig. 10A and 2, the end effector 1 includes a first end and a second end opposite to each other in the axial direction, the first end being close to the closing mechanism, i.e., the sleeve 2. Prior to the staple pushing stage, the cutting device is located at the first end; during the staple ejecting phase, the first driving mechanism 10 is moved axially towards the end effector 1 to drive the cutting driving mechanism to move towards the end effector 1 in synchronization with the staple ejecting sled 60, the cutting driving mechanism driving the cutting device to move from the first end to the second end, but during the staple ejecting phase, the cutting blade 605 is at least partially located in the staple ejecting sled 60, the cutting blade 605 being at a predetermined distance from the target tissue clamped between the cartridge assembly 11 and the anvil 12 such that the cutting blade 605 does not contact the target tissue. During the cutting phase, the first driving mechanism 10 moves away from the end effector 1 in the axial direction to drive the cutting driving mechanism to move away from the end effector 1, and the cutting driving mechanism drives the cutting device to move from the second end to the first end and cut the target tissue.

FIG. 10B is a top view of stapler 100 of FIG. 10A in an anvil orientation; FIG. 10C is a top view of the cartridge orientation of stapler 100 shown in FIG. 10A; FIG. 10D is a schematic sectional view taken along line J-J in FIG. 10C; FIG. 10E is a schematic sectional view taken along line H-H in FIG. 10B; FIGS. 12D-12E are schematic views of the cutting drive mechanism; FIG. 13C is a schematic view of the staple pusher shoe 60 carrying the cutting blade 605 moving from the first end of the end effector 1 to the second end of the end effector 1. Referring to FIGS. 10B-10E, and 13C, cartridge assembly 11 includes a cartridge 500 and an outer rack 400. Staples are arranged in the staple cartridge 500; the outer holder 400 is fixed to the cartridge 500, and has a first portion and a second portion opposite to each other; the first and second portions are located on a side of the cartridge remote from the anvil 12 and both extend axially, the first portion 401 of the outer rack 400 and the second portion 402 of the outer rack 400 are spaced from each other to define a first slide slot 41 extending axially, the first portion of the outer rack 400 and the second portion of the outer rack 400 have an upper surface remote from the cartridge 500 and a lower surface opposite the upper surface, respectively. The staple driving mechanism 40 includes a main body portion 411 and a first slide portion 412. During the movement of the staple driving mechanism 40 driving the staple slider 60, the main body 411 is configured to be connected to the knife carrying member, and a first end of the main body 411, which is far away from the anvil 12, slides in the first sliding slot 41. The first sliding portion 412 is connected to the body portion 411, supported on the upper surface of the first portion of the external bracket 400 and the upper surface of the second portion of the external bracket 400, and configured to be slidable along the upper surface of the first portion of the external bracket 400 and the upper surface of the second portion of the external bracket 400. Thus, the arrangement of the staple pushing driving mechanism 40 on the staple cartridge is realized, and the outer bracket 400 can ensure that the staple pushing driving mechanism 40 stably moves in the staple pushing stage, so that in the staple pushing stage, the staple pushing driving mechanism 40 can not be affected by the acting force of the staple anvil 12, and the staple pushing driving mechanism 40, that is, the cutting driving mechanism, can have a preset distance from the target tissue clamped between the staple cartridge and the staple anvil 12, so that the cutting knife 605 does not contact the target tissue.

For example, as shown in FIG. 13C, the staple cartridge comprises a cartridge support, the cartridge support comprises a first portion 511 and a second portion 512 extending along the axial direction, the first portion of the cartridge support and the second portion of the cartridge support each comprise a staple slot for receiving a staple and define a second slide slot 42 extending along the axial direction, the second slide slot 42 is opposite to the first slide slot 41, and the second end of the main body portion 411 of the staple driving mechanism 40 close to the anvil 12 slides in the second slide slot 42 during the movement of the staple driving mechanism 40 driving the staple slider 60.

For example, the magazine has a staple ejection surface facing the anvil 12, and the body 411 and the first slide portion 412 of the staple driving mechanism 40 have a T-shaped cross section in a direction perpendicular to the staple ejection surface. Thus, different from the i-shaped staple pushing driving mechanism 40 (cutting driving mechanism), the T-shaped staple pushing driving mechanism 40 is disposed on the staple cartridge, and the T-shaped staple pushing driving machine is close to one end of the staple anvil 12, i.e. close to one end of the target tissue, and can be spaced apart from the target tissue by a preset distance in the staple pushing stage so as to prevent the cutting knife 605 from contacting the target tissue, thereby achieving cutting of the target tissue after the whole target tissue is sutured, which is more beneficial to the smoothness and accuracy of the suturing of the target tissue and the accuracy of the cutting.

For example, the staple driving mechanism 40 further includes a second sliding portion 413, and the second sliding portion 413 is connected to the main body portion 411, is located on a side of the first and second portions away from the first sliding portion 412, and is in contact with and configured to be slidable along the lower surfaces of the first and second portions.

Fig. 13A is a schematic view of the staple pushing process. As shown in fig. 12A and 13A, staple pusher sheets 700 are axially aligned and configured to apply pressure to the staples to push the staples out of the cartridge; staple pusher shoe 60 is configured to apply pressure to staple pusher sheet 700 to drive staple pusher sheet 700 to apply staple pushing pressure to the staples; the staple driving mechanism 40 is configured to drive the staple pushing slider 60 to move in the axial direction under the driving of the first driving mechanism 10 in the staple pushing stage, so that the staple pushing slider 60 is in contact with the staple pusher 700 in the axial direction to apply the staple pushing pressure to the staple pusher 700.

As shown in fig. 12A, for example, the staple pusher shoe 60 includes a main body portion and a staple chute 601. The staple-ejecting chute 601 is located on the main body portion of the staple-ejecting slider 60 and on a side of the main body portion of the staple-ejecting slider 60 facing the anvil 12, is configured to accommodate the staple-ejecting blade 700 during a staple-ejecting stage in which the staple-ejecting slider 60 moves in the axial direction, and includes a bottom surface facing the anvil 12, wherein the bottom surface is configured to apply a staple-ejecting pressure to the staple-ejecting blade 700 during the staple-ejecting stage.

As shown in FIG. 12A, for example, the staple pusher shoe 60 includes a receiving cavity 600 and the cutting blade 605 is at least partially positioned within the receiving cavity 600. The nail pushing slider 60 comprises a first nail pushing sliding chute 601 and a second nail pushing sliding chute 601, wherein the staples pushed out by the first nail pushing sliding chute 601 enter the nail grooves of the first part of the nail bin support, and the staples pushed out by the second nail pushing sliding chute 601 enter the nail grooves of the second part of the nail bin support; the accommodating cavity 600 is located between the first nail pushing sliding groove 601 and the second nail pushing sliding groove 601, so that the wall of the accommodating cavity 600 can be used for forming the nail pushing sliding groove 601 at the same time, and the limited space of the nail pushing sliding block 60 is fully utilized, so that the accommodating cavity has the functions of carrying the cutting knife 605 and having a plurality of nail pushing sliding grooves 601 at the same time.

FIG. 12A is a schematic view of the overall structure of the nail-pushing slider 60 carrying a cutting blade 605; FIG. 12B is a cross-sectional view of the staple pusher shoe 60 carrying a cutting blade 605. As shown in fig. 12A-12B, for example, the staple pusher shoe 60, i.e., the knife carrying member, includes a receiving cavity 600, a limiting structure, and a knife drive structure 602. The cutting blade 605 is at least partially positioned within the receiving cavity 600 and includes a cutting edge 6050; the limiting structure is configured to movably connect the cutting blade 605 to the nail-pushing slider 60; for example, the receiving cavity 600 has an inner wall 621/622 comprising intersecting walls 621/622, the walls 621/622 forming a restraining structure; in the nail pushing stage, the plurality of wall surfaces hold the cutting knife 605 in a fixed position; the static friction force applied by the plurality of wall surfaces to the cutting blade 605 is balanced with the gravity of the cutting blade to achieve fixation of the cutting blade 605.

For example, the plurality of wall surfaces include a first wall surface 621 and a second wall surface 622 that are opposite to each other, the first wall surface 621 and the second wall surface 622 intersecting the opening and both intersecting the axial direction; under the first driving force, the cutter 605 slides along the first wall 621 and the second wall 622 to be exposed from the opening. The ejection drive structure 602 is configured to apply a first driving force to the cutting blade 605 to move the cutting edge 6050 toward the target tissue to contact the target tissue. The receiving cavity 600 includes an opening facing the target tissue, and the cutting blade 605 is configured to be at least partially exposed from the opening under the first driving force such that the cutting edge 6050 contacts the target tissue.

For example, the first and second walls are perpendicular to the axial direction to facilitate sliding of the subsequent cutting blade 605 along the first and second walls toward the target tissue.

11A-11B are schematic views of the staple driving mechanism 40 and the staple pusher shoe 60 not connected to each other. As shown in fig. 11A-11B, for example, prior to staple ejection, the staple driving mechanism 40 is coupled to the second driving mechanism 20, moves into contact with the staple pusher shoe 60 as the second driving mechanism 20 moves, and is coupled to the staple pusher shoe 60. FIG. 12C is a schematic view of the end of the staple pusher shoe 60 near the cutting drive mechanism; FIG. 12E is a schematic view of the cutting drive mechanism and staple pusher shoe 60 connected to each other. Referring to fig. 12C-12E, the staple pushing slider 60, i.e., the blade carrying member, further includes a first connecting structure, and the main body portion of the staple pushing driving mechanism 40 includes a second connecting structure. In the nail pushing stage, the first connecting structure is not connected with the second connecting structure; after the staple pushing stage and before the cutting stage, the first connecting structure is connected with the second connecting structure. For example, the main body portion of the staple driving mechanism 40 further includes a force applying surface 641 facing the blade carrying member, and the staple slider 60 includes a force receiving surface 642 facing the main body portion. In the nail pushing stage, the cutting driving mechanism moves towards the cutter carrying component to enable the force application surface to be in contact with the force bearing surface, and the nail pushing driving mechanism 40 applies a second driving force to the force bearing surface through the force application surface to drive the cutter carrying component to move.

For example, in the present embodiment, the first connecting structure is further used as a knife-out driving structure 602, and the knife-out driving structure 602 is at least partially located in the accommodating cavity 600 and configured to be movable in the axial direction; the feed drive structure 602 extends in an axial direction, including a first end axially adjacent the cutting drive mechanism and a second end opposite the first end; the nail pushing slider 60 comprises a through hole 415 which penetrates through the force bearing surface 414 and is communicated with the accommodating cavity 600; in the nail pushing stage, a first end of the cutter driving structure 602 is located in the accommodating cavity 600, a second end of the cutter driving structure 602 extends out of the accommodating cavity 600, and the cutter driving structure 602 does not move relative to the cutter blade 605 in the axial direction. FIG. 13B is a schematic view of the cutting blade not in contact with the target tissue during the staple pushing stage; FIG. 13D is a schematic view of the cutting blade moving into contact with the target tissue during the staple pushing stage. With reference to fig. 12C-12E and 13C, 13D, for example, the cartridge holder comprises a resistive surface 503, the resistive surface 503 faces the knife-out drive structure 602, the knife-out drive structure 602 is configured to impact the resistive surface 503 when the cutting device reaches the second end of the end effector 1 under drive of the cutting drive mechanism, such that the resistive surface 503 applies a knife-out drive force to the knife-out drive structure 602, the knife-out drive structure 602 is configured to contact the cutting knife 605 under the action of the knife-out drive force to apply a first drive force to the cutting knife 605 to drive the cutting knife 605 to move towards the target tissue. For example, as shown in fig. 13B, when the cutting device reaches the second end of the end effector 1, the second end of the cutting drive structure 602 strikes the resisting surface 503, so that the resisting surface 503 applies a cutting drive force to the cutting drive structure 602, the cutting drive structure 602 moves axially away from the second end of the end effector 1 under the action of the cutting drive force to contact with the cutting knife 605 to apply a first drive force to the cutting knife 605 to drive the cutting knife 605 to move towards the target tissue, and the first end of the cutting drive structure 602 moves to the outside of the accommodating cavity 600 through the through hole 603 to be connected with the second connecting structure, that is, the state shown in fig. 13B is changed into the state shown in fig. 13D.

In the staple pushing stage, the cutting edge 6050 of the cutting knife 605 faces the target tissue, the cutting knife 605 further comprises a first bevel 606 intersecting the cutting edge 6050, the discharge drive structure 602 comprises a second bevel 607, the second bevel 607 is located on a side of the first bevel 606 away from the cutting edge 6050 and is axially located on a side of the first bevel 606 close to the second end of the end effector 1 and is parallel to the first bevel 606, and both the first bevel 606 and the second bevel 607 intersect axially; when the second end of the cutting drive structure 602 strikes the resistive surface 503, the cutting drive structure 602 is configured to move axially away from the second end of the end effector 1 under the cutting drive force to bring the second ramp 607 into contact with the first ramp 606 of the cutting blade 605 to apply a first drive force to the cutting blade 605, and the cutting blade 605 moves toward the target tissue and the first ramp 606 slides relative to the second ramp 607 toward a direction closer to the target tissue while the cutting drive structure 602 moves axially away from the second end of the end effector 1. Like this, can guarantee that sword drive structure 602 is connected with the second connection structure smoothly, guarantee the stability of operation, and make full use of the finite space that holds chamber 600, saved the space, do benefit to the miniaturization that realizes anastomat 100 to minimize anastomat 100's radial dimension, and easily get into the operation object such as the human body in the operation process, reduce the injury of operation object.

For example, the second inclined surface 607 forms an obtuse angle with the second end of the axial direction close to the end effector 1, so as to facilitate the sliding of the first inclined surface 606 along the second inclined surface 607.

As shown in fig. 12D-12E, the main body of the cutting driving mechanism includes a hollow area, the hollow area penetrates through the force applying surface to form a via hole on the force applying surface, the second connecting structure is located in the hollow area, and the second end of the knife driving structure 602 penetrates through the via hole to enter the hollow area to be connected with the second connecting structure.

With reference to fig. 12C-12E, for example, the second connecting structure includes an elastic connector protruding from an inner wall of the hollowed-out region facing the second end of the feed-out driving structure 602; the second end of the feed drive structure 602 has a nested hole 604. The elastic connection member includes an elastic connection rod 610 and an end protrusion 611; the elastic connecting rod 610 protrudes from the inner wall of the hollow area facing the second end of the feed driving structure 602 and extends in the axial direction; the end protrusion 611 is located at one end of the elastic connection rod 610 far from the inner wall and protrudes from the elastic connection rod 610 in a second direction perpendicular to the axial direction; the end protrusion 611 is nested within the nesting hole 604 to connect the second end of the knife drive structure 602 to the resilient connector.

As shown in fig. 12E, for example, the end surface of the end protrusion 611 protruding from the elastic connecting rod 610 is an arc surface 612, and the knife driving structure 602 and the elastic connecting member are configured as follows: when the knife driving structure 602 moves away from the second end of the end effector 1 in the axial direction and reaches the end protrusion 611 under the action of the knife driving force, the second end of the knife driving structure 602 abuts against the arc-shaped surface to elastically deform the elastic connecting rod 610 in the second direction, and when the knife driving structure 602 continues to move away from the second end of the end effector 1 in the axial direction and the nesting hole 604 is opposite to the end protrusion 611 under the action of the knife driving force, the end protrusion 611 moves towards the nesting hole 604 in the second direction and is embedded in the nesting hole 604 under the action of the elastic restoring force of the elastic connecting rod 610 to connect the nail driving mechanism 40 (i.e., the cutting driving mechanism) and the nail pushing slider 60 (i.e., the knife carrying member). This design can make full use of the part of the knife-out driving structure 602, and when it is used to realize the exposure of the driving cutting knife 605 to cut the target tissue, it can also be connected with the nail-pushing driving mechanism 40 quickly to prepare for the cutting by driving the cutting knife 605 to move in the next cutting stage, and the structure is simple, easy to realize, and space-saving.

For example, the arc-shaped surface is a spherical crown surface, and the nesting hole 604 is substantially circular, so that the end protrusion 611 can enter the nesting hole 604 more easily to connect the second end of the knife driving structure 602 with the elastic connecting piece, thereby increasing the reliability of the device.

Of course, in other embodiments, the second end of the tool-discharging driving structure 602 may also be connected by other hooking forms, or by clamping, or by magnetic attraction, and the like.

For example, in at least one other embodiment, the stapler 100 is provided wherein the staple pushing slider, i.e., the knife carrying member, comprises a first connecting structure and the main body portion of the cutting driving mechanism comprises a second connecting structure; at least in the nail pushing stage and the cutting stage, the first connecting structure is connected with the second connecting structure so that the nail pushing driving mechanism, namely the cutting driving mechanism, is connected with the nail pushing sliding block. Namely, the nail pushing driving mechanism is connected with the nail pushing sliding block in the nail pushing stage. Also, for example, the first connection structure includes a first connection end adjacent to the cutting drive mechanism, and the second connection structure includes a second connection end adjacent to the first connection structure. Before the nail pushing stage, the nail pushing driving mechanism (namely, the cutting driving mechanism) is not connected with the cutter carrying component; in the nail pushing stage, under the driving of the first driving mechanism and the second driving mechanism, the nail pushing driving mechanism moves towards the nail pushing sliding block (namely the cutter carrying component) to connect the first connecting end with the second connecting end. For example, the main body portion of the staple driving mechanism further comprises a force application surface facing the blade carrying member, and the blade carrying member comprises a force bearing surface facing the main body portion; in the nail pushing stage, the cutting driving mechanism moves towards the cutter carrying component to enable the force application surface to be in contact with the force bearing surface and enable the first connecting end to be connected with the second connecting end, and the cutting driving mechanism applies a second driving force to the force bearing surface through the force application surface and applies a third driving force to the first connecting structure through the second connecting structure to drive the cutter carrying component to move. In the present embodiment, the position of the end protrusion 611 may be interchanged with the position of the fitting hole. For example, the main body of the cutting driving mechanism includes a hollow area, the hollow area penetrates through the force application surface to enable the force application surface to have a through hole, the second connecting structure is located in the hollow area, and the first connecting end penetrates through the through hole to enter the hollow area to be connected with the second connecting end of the second connecting structure. For example, the second connection structure comprises an elastic connection piece which protrudes from the inner wall of the hollow area facing the first connection end; the one end of keeping away from the inner wall of elastic connecting piece is the second link, and the second link has the nested hole. The elastic connecting piece includes: an elastic connection rod 610 and an end protrusion 611; the elastic connection rod 610 protrudes from an inner wall of the hollowed-out region facing the first connection end and extends in an axial direction; the end protrusion 611 is located at one end of the elastic connection rod 610 far from the inner wall and protrudes from the elastic connection rod 610 in a second direction perpendicular to the axial direction; the end protrusion 611 is nested within the nesting hole to connect the second end of the feed drive structure with the resilient connector. For example, the end surface of the end protrusion 611 protruding from the elastic connection rod 610 is an arc-shaped surface, and the cutting driving mechanism and the elastic connection member are configured as follows: when the cutting driving mechanism moves towards the second end of the end effector along the axial direction under the driving of the first driving mechanism and reaches the first connecting end, the first connecting end abuts against the arc-shaped surface so that the elastic connecting rod 610 elastically deforms in the second direction, the cutting driving mechanism continues to move towards the second end of the end effector along the axial direction under the driving of the first driving mechanism so that the embedded hole is opposite to the end part protrusion 611, and the end part protrusion 611 moves towards the embedded hole along the second direction under the action of elastic restoring force of the elastic connecting rod 610 and is embedded into the embedded hole so that the first connecting end is connected with the second connecting end. The second connecting structure comprises an elastic connecting piece which protrudes from the inner wall of the hollow area facing the second end of the cutter discharging driving structure and extends along the axial direction; the one end of keeping away from the inner wall of elastic connecting piece is the second link, and the second link has the nested hole. The second end of the cutter driving structure is provided with an end protrusion 611, and the end protrusion 611 protrudes out of the second end of the cutter driving structure along a second direction perpendicular to the axial direction; the end protrusion 611 is nested within the nesting hole to connect the second end of the feed drive structure with the resilient connector. The end surface of the end protrusion 611 protruding out of the second end of the cutter-discharging driving structure is an arc-shaped surface, and the cutter-discharging driving structure and the elastic connecting piece are configured as follows: when the knife-out driving structure moves away from the second end of the end effector along the axial direction under the action of the knife-out driving force to enable the elastic connecting piece to reach the end protrusion 611, the elastic connecting piece abuts against the arc-shaped surface to enable the elastic connecting piece to generate elastic deformation in the second direction, the knife-out driving structure continues to move away from the second end of the end effector along the axial direction under the action of the knife-out driving force to enable the embedded hole to be opposite to the end protrusion 611, and the elastic connecting piece moves towards the embedded hole along the second direction under the action of the elastic restoring force of the elastic connecting rod 610 so that the end protrusion 611 is embedded into the embedded hole to enable the cutting driving mechanism to be connected with the knife-carrying component. For example, the arcuate surface is a spherical crown surface and the nesting hole is substantially circular. This embodiment can achieve similar technical effects as the embodiment shown in fig. 12C-12E.

In at least one embodiment of the present disclosure, in the initial state, the end effector 1 is in an open state; in the closing phase, the closing mechanism is configured to drive the cartridge assembly 11 and the anvil 12 into apposition to close the end effector 1 to clamp the target tissue; in the staple ejection stage, which follows the closure stage, the staple ejection assembly is configured to eject staples from the cartridge assembly 11 to staple the target tissue. For example, the stapler 100 further comprises a locking mechanism 5, wherein the locking mechanism 5 is configured to limit the closing mechanism to a first position in the staple pushing stage so that the closing mechanism maintains the closing state of the end effector 1, and is configured to limit the closing mechanism to a second position in the initial state so that the end effector 1 is maintained in the opening state, so as to achieve the technical effect of bidirectional locking and prevent the tissue from sliding due to the movement of the closing mechanism after the end effector 1 is closed; and, the end effector 1 is prevented from being closed due to the movement of the closing mechanism in the initial state, thereby improving the operational stability and reliability of the closing mechanism.

Fig. 6A-6C illustrate, by way of example, the structure of the locking mechanism 5 and the operation of the locking mechanism 5 during the closing of the end effector 1 by the closing mechanism, according to an embodiment of the present disclosure. Referring to fig. 1 and 6A-6C, the locking mechanism 5 includes a first stop structure and a second stop structure. The first limiting structure is configured to limit the closing mechanism at a first position in the nail pushing stage; the second limiting structure is configured to limit the closing mechanism to a second position in the initial state. The first limiting structure and the second limiting structure may be in any form as long as the above purpose can be achieved, and are not limited to the cases described in the above embodiments, and the disclosure does not limit this.

For example, as shown in fig. 8, the stapler 100 further includes a first elastic member 71, and the first elastic member 71 is connected to the closing mechanism. In the closing phase, the closing mechanism is moved towards the end effector 1 to close the end effector 1 and elastically deform the first elastic member 71; in the nail pushing stage, the first elastic member 71 which is elastically deformed exerts a first resistance force on the closing mechanism under the action of the elastic restoring force thereof, wherein the first resistance force prevents the closing mechanism from moving towards the end effector 1, the first limiting structure is configured to exert a second resistance force on the closing mechanism, the direction of the second resistance force is opposite to that of the first resistance force, and the first resistance force and the second resistance force are balanced to limit the closing mechanism to a first position; in an initial stage, when the closing mechanism is subjected to a driving force that drives it away from the second position, the second limiting structure is configured to apply a third resistance to the closing mechanism to balance with the driving force to limit the closing mechanism to the second position.

The first stop structure comprises a first stop groove 51 and a first locking member. The first limit groove 51 has a first side wall, is located on the closing mechanism and is configured to move along with the movement of the closing mechanism; at least part of the first end portion 501 of the first locking member is retained in the first retaining groove 51 and contacts with the first side wall to apply a fourth resistance to the first side wall, so as to apply a second resistance to the closing mechanism through the first retaining groove 51, wherein the fourth resistance is equal to the second resistance in magnitude and same to the second resistance in direction. The second retention structure includes a second retention slot 52 and a second locking member. The second restraint slot 52 has a second sidewall that is positioned on the closure mechanism and is configured to move with movement of the closure mechanism. At an initial stage, at least part of the first end 501 of the second locking member is retained in the second retaining groove 52 and is configured to contact the second side wall to apply a fifth resistance to the second side wall, thereby applying a third resistance to the closing mechanism through the second retaining groove 52, the fifth resistance being equal in magnitude to the third resistance and both being in the same direction as the first resistance. For example, in the present embodiment, the closing mechanism is a hollow sleeve 2, and the first limiting groove 51 and the second limiting groove 52 penetrate through the wall of the sleeve 2. Thus, the locking mechanism 5 does not protrude out of the sleeve 2, bidirectional locking of the sleeve 2 is achieved by using the sleeve 2 and the inner space of the sleeve 2, the limited space inside the sleeve 2 is fully utilized, and therefore an operation object such as a human body is prevented from being easily entered in an operation process, and bruise of the operation object is reduced.

As shown in fig. 6A-6C, for example, in some embodiments, the first locking member and the second locking member are the same common locking member 50. In the closed phase, the first and second retaining

grooves

51, 52 move relative to the common locking member 50 such that the common locking member 50 is configured to move from the second retaining groove 52 to the first retaining groove 51; when the first end 501 of the common locking member 50 is at least partially retained in the first retaining groove 51, the common locking member 50 and the first retaining groove 51 constitute a first locking member; when the first end 501 of the common lock member 50 is at least partially retained in the second retaining groove 52, the common lock member 50 and the second retaining groove 52 constitute a second lock member. The common locking member 50 simplifies the structure of the locking mechanism 5, saves space, and facilitates miniaturization of the stapler 100.

For example, the moving direction of the sleeve 2, the first limiting groove 51 and the second limiting groove 52 is an axial direction, and the first limiting groove 51 is located on one side of the second limiting groove 52 away from the end effector 1 along the axial direction, so as to realize the above function of the first limiting groove 51.

As shown in fig. 6A to 6C, the lock mechanism 5 further includes a passage groove 53, and the passage groove 53 is located between the first stopper groove 51 and the second stopper groove 52 and communicates with the first stopper groove 51 and the second stopper groove 52. In the closed stage, the common locking member 50 is configured to move from the second stopper groove 52 to the first stopper groove 51 through the passage groove 53. The passage groove 53 penetrates the cylindrical wall of the sleeve 2.

For example, the common locking member 50 further includes a second end 502 opposite the first end 501, and a neck 503 connecting the first end 501 and the second end 502; the passage slot 53 is configured to allow the neck 503 to pass through but not allow the first end 501 to pass through such that, in an initial stage, the first end 501 cannot pass through the passage slot 53 and is at least partially retained in the second retaining slot 52, and in a nail pushing stage, the first end 501 cannot pass through the passage slot 53 and is at least partially retained in the first retaining slot 51. The direction from the first end 501 to the second end 502 is a longitudinal direction, the longitudinal direction is perpendicular to the axial direction, and the direction perpendicular to the axial direction and the longitudinal direction is a transverse direction. For example, the width in the lateral direction of the passage groove 53 is smaller than the width in the lateral direction of the first stopper groove 51 and smaller than the width in the lateral direction of the second stopper groove 52; the width of the first end portion 501 in the transverse direction is larger than the width of the neck portion 503 in the transverse direction and larger than the width of the channel groove 53 in the transverse direction, so that the channel groove 53 allows the neck portion 503 to pass through but not the first end portion 501, so that in the initial stage, the first end portion 501 cannot pass through the channel groove 53 and is at least partially retained in the second retaining groove 52, and in the nail pushing stage, the first end portion 501 cannot pass through the channel groove 53 and is at least partially retained in the first retaining groove 51.

For example, in at least one embodiment of the present disclosure, the locking mechanism further comprises a lock actuation structure. In a closing stage, the locking driving structure is configured to drive the common locking member to move along the longitudinal direction towards the direction far away from the second end part so that the first end part moves out of the second limiting groove, and along with the movement of the first limiting groove and the second limiting groove, the neck part is configured to move from the second limiting groove to the first limiting groove through the channel groove; after the end closure is closed, the lock drive structure is configured to drive the common lock member to move in a longitudinal direction toward a direction near the second end portion to move at least a portion of the first end portion into the first retention groove to be retained in the first retention groove, the at least a portion of the first end portion being in contact with the first sidewall to apply a fourth resistance to the first sidewall.

As shown in fig. 6A to 6C, for example, the stapler 100 includes a fixing bracket 8, the sleeve 2 is sleeved outside the fixing bracket 8, and the first limiting groove 51, the second limiting groove 52 and the passage groove 53 expose the outer surface of the fixing bracket 8. The fixing bracket 8 includes a through hole penetrating through an outer surface, and at least a portion of the neck 503 and the second end 502 are located in the through hole when at least a portion of the first end 501 of the common lock mechanism 5 is caught in the first catching groove 51 or the second catching groove 52. For example, the first end portion 501 includes a lower surface facing the fixing bracket 8, and when at least a portion of the first end portion 501 of the common locking mechanism 5 is retained in the first retaining groove 51 or the second retaining groove 52, an outer surface of the fixing bracket 8 directly contacts the lower surface of the first end portion 501 to support the first end portion 501. The common locking member 50 and the through hole constitute a latch structure.

For example, at least a portion of the first end portion 501 has a length in the axial direction smaller than that of the first limiting groove 51 to leave a margin, so that the first limiting groove 51 allows at least a portion of the first end portion 501 to move in the first limiting groove 51 within a range allowed by the margin to adjust the position, thereby playing a role of buffering when grasping the tissue in the closing stage.

For example, the first side wall has a first arc shape, the side surface of the first end portion 501, which is at least partially in contact with the first side wall, has a second arc shape, and the curvatures of the first arc shape and the second arc shape are the same, so that the stability and reliability of the locking member are improved.

For example, the planar shape of the passage groove 53 is a straight bar shape to ensure that the common lock member 50 moves between the first stopper groove 51 and the second stopper groove 52 by smoothly passing through the passage groove 53.

6A-6C, for example, the locking drive structure includes a bearing surface facing the common locking member 50; the bearing surface comprises a first surface 01, a first slope surface 02, a protruding surface 03, a second slope surface 04 and a second surface 05 which are sequentially arranged along the axial direction, the first slope surface 02 is connected with the first surface 01 and the protruding surface, the second slope surface 04 is connected with the protruding surface and the second surface 05, a first included angle is formed between the first slope surface 02 and the protruding surface, and a second included angle is formed between the second slope surface 04 and the protruding surface; in the longitudinal direction, the distance from the protruding surface to the second stopper groove 52 is smaller than the distance from the first surface 01 to the second stopper groove 52 and smaller than the distance from the second surface 05 to the second stopper groove 52, the distance from the protruding surface to the passage groove 53 is smaller than the distance from the first surface 01 to the passage groove 53 and smaller than the distance from the second surface 05 to the passage groove 53, and the distance from the protruding surface to the first stopper groove 51 is smaller than the distance from the first surface 01 to the first stopper groove 51 and smaller than the distance from the second surface 05 to the first stopper groove 51. As shown in fig. 6A, in the initial stage, the second end 502 is located on the side of the first slope 02 away from the second slope 04; in a closed stage, the lock driving structure is configured to move axially relative to the common locking member 50 to move the second end 502 along the first ramp 02 to the projecting surface to drive the common locking member 50 to move longitudinally away from the second end 502, which in turn moves the second end 502 along the projecting surface and the second ramp 04 to a side of the second ramp 04 away from the first ramp 02, fig. 6B, to move the common locking member 50 longitudinally towards the second end 502, fig. 6C. During the closing phase, the movement of the lock driving structure relative to the common locking member 50 is synchronized with the movement of the first and second retaining

grooves

51, 52 relative to the common locking member 50, so that during the movement of the second end 502 relative to the lock driving structure, the neck 503 moves from the second retaining groove 52 into the first retaining groove 51 via the passage groove 53, as shown in fig. 6C; at this time, at least a portion of the first end portion 501 is in contact with a first portion of the first sidewall near the passage slot 53 to apply a fourth resistance to the first portion 511 of the first sidewall, the first portion 511 of the first sidewall facing away from the end effector 1.

For example, in the embodiment shown in fig. 6A-6C, the fixed bracket 8 and the common locking member 50 do not move in the axial direction, and the lock driving structure moves in the axial direction to ensure stability of the fixed bracket 8 and the common locking member 50.

The first driving mechanism 10 of the stapler 100 is connected with the second driving mechanism 20 and configured to drive the second driving mechanism to move; in the closing phase, the second drive mechanism 20 is detachably connected to the closing mechanism and is configured to be moved towards the end effector 1 under the drive of the first drive mechanism 10 such that the closing mechanism is brought into contact with the cartridge assembly 11 and the anvil 12 and applies pressure to the cartridge assembly 11 and the anvil 12 to close the end effector 1. For example, the lock drive mechanism is provided on the second drive mechanism 20. For example, in the embodiment shown in FIGS. 6A-6C, a portion of second drive mechanism 20 is reused as a locking drive mechanism to fully utilize second drive mechanism 20 and simplify the structure of stapler 100.

In the staple ejection phase, the second drive mechanism 20 is disengaged from the closure mechanism and continues to move toward the end effector 1 to drive the staple ejection assembly to eject staples from the cartridge assembly 11. As shown in fig. 6C, the first surface 01 is located at one end of the second surface 05 close to the end effector 1, and during the closing stage, the first end portion 501 moves from the second limiting groove 52 to the first limiting groove 51 during the movement of the second end portion 502 relative to the locking driving structure; during the staple pushing stage and the cutting stage, the second end portion 502 moves above the second surface 05, and the second surface 05 is configured not to apply a force to the second end portion 502 to drive the common locking structure to move in the longitudinal direction, i.e. there is no boss or the like on the second surface 05 to drive the common locking structure to move upwards in the longitudinal direction, so that the sleeve 2 is kept locked during both the staple pushing stage and the cutting stage, the position of the target tissue is fixed, and the accuracy of suturing and cutting is guaranteed.

For example, as shown in fig. 6A-6C, the locking mechanism 5 further includes a second elastic member 72, and the second elastic member 72 is configured to be compressed during the movement of the common locking member 50 in the longitudinal direction toward the direction away from the second end 502 and to be restored under the elastic restoring force thereof during the movement of the common locking member 50 in the longitudinal direction toward the direction close to the second end 502, so as to ensure that the common locking member 50 can be quickly moved back into the through hole in the longitudinal direction toward the direction close to the second end 502, thereby ensuring the reliability of the operation of the locking mechanism 5.

The properties and materials of the second elastic member 72 can be referred to the properties and materials of the first elastic member 71 described above. For example, the second elastic member 72 is a spring, for example, the second elastic member 72 can be sleeved on the neck 503 and be forced by the fixing bracket 8 to deform, for example, to be compressed to deform.

For example, as shown in fig. 6A-6C, the second end 502 of the common locking member 50 is tapered in shape longitudinally towards the bearing surface, such that when the second end 502 slides along the first ramp 02, the contact area of the second end 502 with the first ramp 02 is reduced, making it easier for the second end 502 to move to the protruding surface; moreover, when the second end portion 502 slides along the protruding surface, the second slope 04, and the second surface 05, the contact area of the second end portion 502 with the protruding surface, the second slope 04, and the second surface 05 is reduced, which is beneficial to smooth sliding.

For example, the first and second ramp surfaces 02, 04 are plane or curved, preferably planar, which makes it easier to achieve the above-mentioned movement, in particular to achieve that the second end 502 slides along the first ramp surface 02 to the protruding surface. Of course, the shape of the first slope surface 02 and the second slope surface 04 is not limited in the embodiments of the present disclosure.

For example, with regard to stapler 100 provided in accordance with at least one embodiment of the present disclosure, during the opening phase following the staple pushing phase, locking mechanism 5 is also configured to remove the definition of the position of the closing mechanism to allow opening of end effector 1. For example, it may be achieved by a human control that the definition of the position of the closing mechanism is released at any time to open the end effector 1; for example, the open stage requires the end effector 1 to be opened to adjust the position of the target tissue held before suturing, e.g., before suturing the tissue; it is also possible to open the end effector 1 after stapling and cutting, but also before cutting, as a matter of course, when some special circumstances arise that require the end effector 1 to be opened for adjustment before cutting.

In the opening phase following the staple ejection phase, the first limit structure is configured to eliminate the second resistive force, and the closure mechanism is moved away from the end effector 1 by the first resistive force to move the cartridge assembly 11 and the anvil 12 away from each other to open the end effector 1. In the opening stage, the common lock member 50 is configured to move from the first stopper groove 51 to the second stopper groove 52 to return to the initial state.

For example, in the embodiment shown in fig. 6A-6C, the common locking member 50 is configured to move from the first restraint slot 51 to the second restraint slot 52 via the channel slot 53 during the opening stage. In the opening stage, the lock driving structure is further configured to drive the common lock member 50 to move in the longitudinal direction away from the second end portion 502 so that the first end portion 501 moves out of the first stopper groove 51, and the neck portion 503 is configured to move from the second stopper groove 52 to the first stopper groove 51 through the passage groove 53 along with the movement of the first stopper groove 51 and the second stopper groove 52.

In the embodiment shown in fig. 6A-6C, at the opening stage, the lock driving structure is configured to move axially relative to the common locking member 50 to move the second end 502 along the second ramp 04 to the protruding surface to drive the common locking member 50 to move longitudinally towards a direction away from the second end 502, and then to move the second end 502 sequentially along the protruding face and the first ramp 02 to a side of the first ramp 02 away from the second ramp 04 to move the common locking member 50 longitudinally towards a direction towards the second end 502; in the opening phase, the movement of the lock drive structure relative to the common lock member 50 is synchronized with the movement of the first and second retaining

grooves

51, 52 relative to the common lock member 50, so that during the movement of the second end 502 relative to the lock drive structure, the neck 503 moves from the first retaining groove 51 into the second retaining groove 52 via the passage groove 53.

For example, as shown in fig. 8, the first elastic member 71 is located at an end of the lock mechanism 5 near the end effector 1 and is compressed as the closing mechanism moves toward the end effector 1; alternatively, in other embodiments, the first resilient member 71 is located at an end of the locking mechanism 5 distal from the end effector 1 and is stretched as the closure mechanism moves toward the end effector 1.

For example, as shown in fig. 6A to 6C, the first stopper groove 51, the second stopper groove 52, and the passage groove 53 are disposed opposite to the connection hole 23 to relatively uniformly and sufficiently utilize the space inside the sleeve 2.

Fig. 14A is a first schematic view of a front swing driving assembly of a stapler 100 according to an embodiment of the present disclosure; fig. 14B is a second schematic diagram of a front swing driving assembly of the stapler 100 according to an embodiment of the disclosure. Referring to fig. 2 and 14A-14B, for example, at least one embodiment provides a stapler 100 including an end effector 1, a closure mechanism, a staple pushing assembly, a first drive mechanism 10, and a swing mechanism. The end effector 1 comprises a nail bin assembly 11 and a nail anvil 12, wherein anastomosis nails are arranged in the nail bin assembly 11; the closure mechanism is configured to drive the cartridge assembly 11 and anvil 12 into apposition to close the end effector 1 to clamp the target tissue; the staple pushing assembly is configured to push staples out of the cartridge assembly 11; the first drive mechanism 10 is configured to: in the closing stage, the first driving mechanism 10 is detachably connected with the closing mechanism to drive the closing mechanism to close the end effector 1; in the staple ejection stage, which follows the closure stage, the first drive mechanism 10 disengages from the closure mechanism and drives the staple ejection assembly to eject the staples from the cartridge assembly 11 to staple the target tissue. The swing mechanism includes a front swing drive assembly and a rear swing drive assembly. The front swing drive assembly and the rear swing drive assembly are configured to drive the end effector 1 to swing. As shown in fig. 1A, the stapler 100 includes a main body portion 4 and a detachable portion 3, the detachable portion 3 being detachably connected to the main body portion 4; the end effector 1 and the front swing driving assembly are positioned on the detachable part 3, and the first driving mechanism 10 and the rear swing driving assembly are positioned on the main body part 4; as shown in fig. 1A and 15A, the detachable portion 3 is detachably connected with the main body portion 4 to detachably connect the front swing drive assembly with the rear swing drive assembly. In this manner, the space of the main body portion 4 is fully utilized to provide the swing mechanism, and in the case where the detachable portion 3 is detachable from the main body portion 4, detachable connection of the swing mechanism is achieved.

Fig. 15A-15B are schematic views of a front swing drive member of a stapler 100 according to an embodiment of the present disclosure. With reference to fig. 5C and fig. 15A-15B, the front swing drive assembly includes a front swing drive member 81, the front swing drive member 81 being connected to the end effector 1; the rear swing driving assembly includes a rear swing driving member 82, the rear swing driving member 82 extends in the same direction as the first driving mechanism 10 and is disposed side by side, and the detachable portion 3 is detachably connected to the main body portion 4 so that the front swing driving member 81 is detachably connected to the rear swing driving member 82, for example, both are hooked, plugged, and the like. The extending direction of the rear swing driving member 82 and the first driving mechanism 10 is axial; in the process of the swing mechanism driving the end effector 1 to swing, the front swing driving member 81 and the rear swing driving member 82 move in the axial direction toward the end effector 1 to drive the end effector 1 to swing toward the first swing direction; for example, the front swing drive member 81 and the rear swing drive member 82 may also be moved axially away from the end effector 1 to drive the end effector 1 to swing toward a second swing direction opposite to the first swing direction.

For example, as shown in fig. 15B, the front swing driving member 81 includes a first portion 8001 and a second portion 8002 connected to each other for manufacturing, and when the length of the front swing driving member 81 in the axial direction is long, dividing the front swing driving member 81 into two portions connected to each other facilitates buffering stress of the front swing driving member 81 and also facilitates manufacturing and installation.

For example, with reference to fig. 2 and 14A-14B, the front swing drive assembly includes a bendable region 80, the bendable region 80 configured to bend in a first swing direction or a second swing direction to cause the end effector 1 to swing around the bendable region 80; the end effector 1 comprises a first end close to the front swing driving assembly and a second end opposite to the first end, the first end of the end effector 1 is connected with the front swing driving assembly, and the bendable portion 80 is located between the position where the front swing driving assembly is connected with the first end of the end effector 1 and the position where the front swing driving assembly is connected with the rear swing driving assembly along the axial direction, so that the end effector 1 swings around the bendable portion 80. The second driving mechanism 20 includes a transmission belt 201 extending along an axial direction, in the nail pushing stage, the transmission belt 201 enters the end effector 1 through the bendable portion 80 to drive the nail pushing assembly to push out the staples from the cartridge assembly 11, and a belt surface of the transmission belt 201 is substantially perpendicular to a swinging direction of the end effector 1 to increase flexibility of the second driving mechanism 20, and since the transmission belt 201 passes through the bendable portion 80 in the nail pushing stage and the cutting stage, the scheme is beneficial to reducing swing resistance and avoiding breaking the second driving mechanism 20.

Referring to fig. 5B, for example, the second driving mechanism 20 further includes a connecting portion 202, and the connecting portion 202 is detachably connected to the closing mechanism 2 and located on a side of the belt 201 away from the end effector 1, wherein an end of the connecting portion 202 close to the end effector 1 is connected to an end of the belt 201 away from the end effector 1, and the detachable portion 3 is connected to the main body portion 4 so that an end of the connecting portion 202 away from the end effector 1 is connected to the first driving mechanism 10, so that the breakage of the second driving mechanism 20 can be reduced by the belt 201 when the belt 201 swings in cooperation with the end effector 1, and multiple functions can be realized by the connecting portion 202. For example, a portion of the connecting portion 202 also serves as the above-described lock driving structure, and for example, the connecting portion 202 is also detachably connected to the detachable connecting structure 6. Therefore, the same component is fully utilized to realize the multiple functions, the space is saved, and the stapler 100 has important significance for reducing the size.

For example, the second driving mechanism 20 includes a plurality of belts 201, the plurality of belts 201 are stacked in a direction perpendicular to the belt surface, and no gap exists between adjacent belts 201, so as to enhance the strength of the second driving mechanism 20 and ensure the reliability of driving the nail driving mechanism 40 to move in the axial direction.

For example, the material of the transmission belts 201 is steel, the thickness of each transmission belt 201 in the direction perpendicular to the belt surface is 100 μm to 1000 μm, and the length of each transmission belt 201 in the axial direction is 10cm to 30cm, so as to ensure the strength required for driving the nail driving mechanism 40 to move in the axial direction. Of course, the size of the material can be designed according to actual needs, and the embodiment of the disclosure does not limit the material. The material of the belt 201 is not limited to steel, and may be other metal materials or organic materials.

For example, referring to fig. 5B, in a state where the second driving mechanism 20 is connected to the first driving mechanism 10, one end of the belt 201 away from the first driving mechanism 10 is connected to the nail driving mechanism 40, for example, welded to the nail driving mechanism 40, but other connection methods are also possible.

The direction from the first end of the end effector 1 to the second end of the end effector 1 is a first direction. As shown in fig. 11B and 13C, the cartridge holder of the cartridge includes a first portion 511 and a second portion 512 extending along a first direction, the first portion of the cartridge holder and the second portion of the cartridge holder each include a staple slot for receiving staples and define a slide slot extending along the first direction, and during the movement of the staple pushing slider 60 driven by the staple pushing driving mechanism 40, the cutting driving mechanism and the conveyor belt enter the slide slot through the bendable portion 80 and slide in the slide slot, so as to drive the cutting driving mechanism (i.e., the staple pushing driving mechanism 40) to move between the first end and the second end of the end effector 1.

For example, as shown in fig. 14A-14B, the front swing drive assembly includes a transmission mechanism connected to the front swing drive member 81 and configured to drive the end effector 1 to swing around the bendable region 80 under the drive of the front swing drive member 81. For example, the transmission mechanism includes drive teeth 821, bar 820, and gear 811/812/813. Drive

teeth

821 and 820 comprise drive teeth 821, extend in the axial direction, and are connected to front swing drive member 81 to move in the axial direction under the drive of front swing drive member 81; for example, drive

teeth

821 and 820 are integrally formed with front swing drive member 81. Drive

teeth

821 and 820 include drive teeth 821 extending in an axial direction and coupled to forward swing drive member 81 for axial movement driven by forward swing drive member 81. The gear 811/812/813 meshes with the drive teeth 821, and the bars 820 move axially to drive the teeth 821 to rotate. The front swing driving assembly further comprises a swing head connecting part, a first end of the swing head connecting part, which is close to the end effector 1, is connected with a first end of the end effector 1, a second end of the swing head connecting part, which is far away from the end effector 1, comprises a terminal tooth 814, the terminal tooth 814 is meshed with the gear 811/812/813 so that the swing head connecting part and the end effector 1 swing under the driving of the gear 811/812/813, and the position where the terminal tooth 814 is meshed with the gear 811/812/813 is a bendable part 80; the face of the toothed disc of gear 811/812/813 is substantially perpendicular to the belt face of belt 201 such that the belt face of belt 201 is substantially perpendicular to the direction in which end effector 1 oscillates.

For example, as shown in fig. 14A-14B, the transmission mechanism includes a plurality of gears arranged in the axial direction, adjacent gears of the plurality of gears 3 being engaged with each other; the gear 813 of the plurality of gears 811/812/813 closest to the end effector 1 meshes with the terminal tooth 814 at the second end of the yaw linkage, and at least the gear 811 of the plurality of gears 811/812/813 furthest from the end effector 1 meshes with the drive tooth 821 of the drive rack 820 to avoid reliance on a single gear and increase stability of operation of the transmission.

For example, as shown in fig. 14A-14B, the diameter of the toothed disc of gear 813 closest to end effector 1 in gear 811/812/813 is smaller than the diameter of the toothed discs of the other gears 812/813 in gear 811/812/813, so that the front swing drive mechanism coupled to the larger diameter gear moves a smaller distance in the axial direction, i.e., the terminal tooth 814 of the swing head coupling portion rotates a larger angle, i.e., the end effector 1 coupled to the swing head coupling portion rotates a larger angle, thereby facilitating a larger swing of the end effector 1 with a limited axial length.

For example, as shown in fig. 14A-14B, stapler 100 further includes a stabilizing rack 830, stabilizing rack 830 engaged with gear 811/812/813, drive

teeth

821 and 820 located on a first side of gear 811/812/813, stabilizing rack 830 located on a side of gear 811/812/813 opposite the first side, stabilizing rack 830 not connected to front swing drive member 81. Stabilizing rack 830 can carry gear 811/812/813, making the structure and operation of gear 811/812/813 more stable.

For example, as shown in FIGS. 14A-14B, in the case where the closure mechanism is a cartridge 2 that is disposed outside of the second drive mechanism 20 and the gear train, the cartridge assembly 11 includes a first end that is adjacent to the cartridge 2, and the anvil 12 includes a first end that is adjacent to the cartridge 2. In the closing stage, the second driving mechanism 20 is driven by the first driving mechanism 10 to move towards the end effector 1 and drive the sleeve 2 to move towards the end effector 1, so that the sleeve 2 is sleeved on the first end of the cartridge assembly 11 and the first end of the anvil 12 to apply pressure to the first end of the cartridge assembly 11 and the first end of the anvil 12 to close the end effector 1; the sleeve 2 comprises a first portion 21 proximal to the end effector 1 and a second portion 22 distal to the end effector 1; stapler 100 further includes a rotatable sleeve coupling 25, wherein first portion 21 of sleeve 2 is coupled to second portion 22 of sleeve 2 by rotatable sleeve coupling 25, and wherein rotatable sleeve coupling 25 is positioned at bendable region 80 to allow first portion 21 of sleeve 2 to swing with end effector 1, thereby adapting the closure mechanism to the end effector 1 swing design.

For example, as shown in fig. 14A-14B, the rotatable sleeve 2 connection part comprises a first hinge structure and a second hinge structure connected to each other, the first hinge structure being connected to a first portion of the sleeve 2 and the second hinge structure being connected to a second portion of the sleeve 2.

FIG. 16A is a partial schematic view of a rear swing drive assembly of a stapler 100 according to one embodiment of the disclosure; FIG. 16B is a partial schematic view of a manual adjustment drive mechanism of stapler 100 according to one embodiment of the present disclosure; with reference to fig. 9 and 16A-16B, the rear swing drive assembly further includes a third swing drive mechanism configured to drive the front and rear

swing drive members

81 and 82 to move axially toward the end effector 1 or axially away from the end effector 1 during the swing mechanism driving the end effector 1 to swing, and the third swing drive mechanism is configured to adjust the distance the front and rear

swing drive members

81 and 82 move axially toward the end effector 1 or axially away from the end effector 1, thereby adjusting the amplitude of the swing of the end effector 1.

18A-18B are schematic views of a handle provided in accordance with an embodiment of the present disclosure; as shown in fig. 16A to 16B and fig. 18A to 18B, the third swing drive mechanism includes a shift position adjusting switch 98, and the shift position adjusting switch 98 is configured to adjust the distance by which the front swing drive member 81 and the rear swing drive member 82 move toward the end effector 1 in the axial direction, or to adjust the distance by which the front swing drive member 81 and the rear swing drive member 82 move away from the end effector 1 in the axial direction, step by step, thereby adjusting the amplitude of the swing of the end effector 1 by step.

For example, the front swing drive member 81 and the rear swing drive member 82 are each a single rod extending in the axial direction; the front swing driving member 81 extends in the axial direction and is arranged side by side with the second driving mechanism 20 to make full use of the space inside the elongated sleeve 2; the rear swing drive member 82 extends axially alongside the first drive mechanism 10 to make full use of the space within the elongate sleeve 2.

As shown in fig. 15A to 15B, the detachable portion 3 is detachably connected with the main body portion 4 to detachably connect the front swing driving member 81 with the rear swing driving member 82, thereby achieving detachable connection of the front swing driving assembly with the rear swing driving assembly.

For example, the front swing drive member 81 includes a first portion as shown in fig. 15A-15B and a second portion detachably connected to the first portion, both the first portion and the second portion of the front swing drive member 81 being located at the detachable portion 3 when the detachable portion 3 of the stapler 100 is not connected to the main body portion 4.

As shown in fig. 16A-16B, the third swing driving mechanism is a manual adjustment driving mechanism, by which the front swing driving member 81 and the rear swing driving member 82 are axially moved toward the end effector 1 by a distance of one shift position for every shift of one shift position toward the first shift direction to rotate the end effector 1 by an angle of one shift position toward the first swing direction; alternatively, for every shift of one shift position toward the second shift direction, the front swing driving member 81 and the rear swing driving member 82 are axially moved away from the end effector 1 by a distance of one shift position to rotate the end effector 1 by an angle of one shift position toward the second swing direction. For example, as shown in fig. 1, the manual adjustment drive mechanism includes a manual knob 96, and the shift positions of the front swing drive member 81 and the rear swing drive member 82 that are moved toward the end effector 1 in the axial direction are controlled by manually operating the manual knob 96.

Alternatively, the third swing driving mechanism is an electric driving mechanism. For example, the electric drive mechanism comprises an electric motor and a yaw control switch; the electric motor is configured to rotate to drive the front swing drive member 81 and the rear swing drive member 82 to move axially toward the end effector 1 or to move axially away from the end effector 1; the yaw control switch is configured to control the sending of an electrical signal to the electric motor to control the operation of the motor.

As shown in fig. 16A-16B and fig. 18A-18B, the body portion 4 includes a handle 9, the yaw control switch is a dial 93 switch, the dial 93 switch includes a dial 93 disposed on a surface of the handle 9, the dial 93 is configured to be toggled toward a first toggle direction to drive the end effector 1 to swing toward a first swing direction, and configured to be toggled toward a second toggle direction to drive the end effector 1 to swing toward a second swing direction, the first toggle direction and the second toggle direction being different.

For example, the dial 93 has gear position marks thereon. For each shift of one shift position toward the first shift direction, the front swing driving member 81 and the rear swing driving member 82 are axially moved toward the end effector 1 by a distance of one shift position to rotate the end effector 1 by an angle of one shift position toward the first swing direction; alternatively, or in addition, for each shift of one shift position in the second shift direction, the front swing driving member 81 and the rear swing driving member 82 are axially moved away from the end effector 1 by a distance of one shift position to rotate the end effector 1 by an angle of one shift position in the second swing direction.

Illustratively, fig. 17 is a first schematic view of a stapler 100 according to an embodiment of the present disclosure, wherein the staple pushing slider 60 is located at the second end of the end effector 1 before the end effector 1 is closed, as shown in fig. 17, and the stapler 100 includes the end effector 1, a closing mechanism and a staple pushing assembly. The end effector 1 comprises a nail bin assembly 11 and a nail anvil 12, wherein anastomosis nails are arranged in the nail bin assembly 11; the closure mechanism is configured to drive the cartridge assembly 11 and anvil 12 into apposition during the closure phase to clamp the target tissue, and the end effector 1 has a first end proximal to the closure mechanism and a second end distal to the closure mechanism; the staple pusher assembly is configured to push staples from the cartridge assembly 11 into the target tissue from the second end to the first end and to staple the target tissue from the second end to the first end in a staple pushing phase following the closing phase. In the process of suturing the target tissue from the second end of the end effector 1 to the first end of the end effector 1, the target tissue is sutured with higher precision than when suturing the target tissue from the first end of the end effector 1 to the second end of the end effector 1.

The staple pushing assembly includes a staple pushing blade 700, a staple pushing slider 60 and a staple driving mechanism 40. The pusher plates 700 are aligned in a direction from the second end to the first end and are configured to apply a pusher pressure to the staples to push the staples out of the cartridge assembly 11; the staple pusher shoe 60 is configured to apply pressure to the staple pusher tabs 700 to drive the staple pusher tabs 700 to apply staple pushing pressure to the staples; the staple driving mechanism 40 is configured to drive the staple pusher shoe 60 to move in a direction from the second end to the first end during the staple pushing phase, such that the staple pusher shoe 60 is sequentially in contact with the staple pusher sheet 700 in the direction from the second end to the first end to apply the staple pushing pressure to the staple pusher sheet 700.

For example, as shown in FIG. 17, prior to the staple pushing stage, the staple pusher shoe 60 is located at the second end; in the staple pushing stage, the staple pusher shoe 60 moves from the second end to the first end and sequentially pushes out the staples in the cartridge assembly 11 in a direction from the second end to the first end to staple the target tissue.

For example, as shown in FIG. 17, stapler 100 further includes a cutting device and a cutting drive mechanism. The cutting device is configured to cut the target tissue in a cutting stage after the target tissue is entirely sutured; the cutting drive mechanism is configured to drive the cutting device to cut the target tissue during a cutting phase in which the cutting device is moved from the first end to the second end to cut the target tissue in a direction from the first end to the second end.

For example, the cutting device includes a blade carrying member and a cutting blade 605. The staple pusher shoe 60 serves as a knife carrier, i.e., the cutting device is located at the second end of the end effector 1 during the closing and staple pushing phases. The staple pushing drive mechanism 40 is reused as a cutting drive mechanism; the cutting knife 605 is movably connected with the nail pushing slider 60, and the nail pushing slider 60 moves to enable the cutting knife 605 to move; in the staple pushing stage, the cutting blade 605 is at least partially positioned in the staple pusher shoe 60, the cutting blade 605 moves with the staple pusher shoe 60 in a direction from the second end to the first end, and the cutting blade 605 is spaced a predetermined distance from the target tissue clamped between the cartridge assembly 11 and the anvil 12 such that the cutting blade 605 does not contact the target tissue. Fig. 20 is a schematic view of the staple pushing slider 60 at the first end of the stapler 100 according to an embodiment of the present disclosure. As shown in fig. 20, when the staple pushing phase is finished, the staple pushing slider 60 reaches the first end of the end effector 1; during the cutting stage, the staple driving mechanism 40 pushes the staple slider 60 to move the cutting blade 605 with the staple slider 60 in the direction from the first end to the second end, and the cutting blade 605 contacts the target tissue under the action of the blade-out driving force and cuts the target tissue in the direction from the first end to the second end. The cutting after the whole suturing of the target tissue is beneficial to improving the accuracy of the suturing and the cutting, and the nail pushing sliding block 60 is reused as a knife carrying part, so that the structure can be simplified, and the space is saved. For example, stapler 100 includes a knife drive structure 602, the cartridge holder includes a resistive surface 503, resistive surface 503 faces knife drive structure 602, knife drive structure 602 is configured to strike resistive surface 503 when the cutting device reaches the first end of end effector 1 under drive of the cutting drive mechanism, such that resistive surface 503 applies a knife drive force to knife drive structure 602, and knife drive structure 602 is configured to contact cutting knife 605 under the action of the knife drive force to apply a first drive force to knife 605 to drive cutting knife 605 toward the target tissue. Then, the staple driving mechanism 40 pushes the staple slider 60 to move the cutting knife 605 along with the staple slider 60 in the direction from the first end to the second end, and the cutting knife 605 contacts the target tissue under the action of the knife-out driving force and cuts the target tissue in the direction from the first end to the second end, so that the structure can be simplified, the reciprocating motion of the cutting knife 605 between the first end and the second end can be reduced, and the working efficiency of the stapler 100 can be improved.

Of course, in other embodiments, the staple pushing and cutting may be independent of each other, i.e., the staple pusher shoe 60 may not be used as a knife carrying member. Namely, the cutting device comprises a blade carrying component and a cutting blade 605; the cutting knife 605 is movably connected with a knife carrying component, and the knife carrying component moves to enable the cutting knife 605 to move; in the nail pushing stage, the cutting device and the cutting driving mechanism are positioned at the first end of the end effector 1; in the cutting stage, the cutting driving mechanism drives the cutting device to move from the first end to the second end to cut the target tissue in the direction from the first end to the second end, the knife carrying part and the staple pushing slider 60 are independent of each other, and the cutting driving mechanism and the staple pushing driving mechanism 40 are independent of each other.

In one example, as shown in fig. 17, for example, the staple driving mechanism 40 is configured to be uncoupled from the staple sled 60 during the closing phase, move toward the second end of the end effector 1 to connect with the staple sled 60 prior to the staple pushing phase, and move in a direction from the second end to the first end during the staple pushing phase to drive the staple sled 60 to move in a direction from the second end of the end effector 1 to the first end of the end effector 1.

In another example, the staple driving mechanism 40 is configured to be located at the second end of the end effector 1 and connected to the staple sled 60 during the closing phase, and to move in a direction from the second end of the end effector 1 to the first end of the end effector 1 during the staple stage to drive the staple sled to move in a direction from the second end of the end effector to the first end of the end effector, for example.

For example, in another embodiment, during the cutting stage, the cutting device is moved from the second end of the end effector to the first end of the end effector to cut the target tissue in a direction from the second end to the first end. For example, the staple pusher shoe may be reused as a knife carrier.

Alternatively, in some embodiments, the cutting device and the cutting drive mechanism are located at the second end of the end effector during the staple ejection phase; the cutting device cuts after the target tissue is integrally sutured; and in the cutting stage, the cutting driving mechanism drives the cutting device to move from the second end to the first end so as to cut the target tissue in the direction from the second end to the first end, the knife carrying part and the nail pushing sliding block are independent, and the cutting driving mechanism and the nail pushing driving mechanism are independent. After the staple pushing driving mechanism moves from the second end of the end effector to the first end of the end effector to suture the target tissue, the staple pushing driving mechanism drives the staple pushing slider to move from the first end of the end effector to the second end of the end effector to connect the staple pushing slider with the cutting device, then the staple pushing driving mechanism drives the cutting device to move from the second end of the end effector to the first end of the end effector, and the cutting knife in the cutting device is contacted with the target tissue to cut the target tissue in the direction of moving from the second end of the end effector to the first end of the end effector. For example, one end of the knife carrying component close to the nail pushing slide block is provided with a third connecting structure, one end of the nail pushing slide block close to the knife carrying component is provided with a fourth connecting structure, and the third connecting structure is connected with the fourth connecting structure, so that the nail pushing slide block is connected with the cutting device. The third connecting structure may refer to the first connecting structure, for example, including a through hole, and the second connecting structure may refer to the third connecting structure, for example, including an elastic connecting member, specifically, refer to the connection manner between the first connecting structure and the second connecting structure.

For example, in other embodiments, the cutting device comprises a knife carrying component and a cutting knife, the nail pushing slide block is used as the knife carrying component, and the nail pushing driving mechanism is used as the cutting driving mechanism; the cutting knife is movably connected with the nail pushing sliding block, and the nail pushing sliding block moves to enable the cutting knife to move. The staple pushing stage and the cutting stage are carried out simultaneously, the staple pushing slider moves along the direction from the second end to the first end to sequentially push the staples out of the suturing target tissue, the cutting knife contacts the target tissue and moves along with the staple pushing slider to cut the target tissue along the direction from the second end to the first end, and the cutting knife and the staple pushing slider are configured to enable each local part to be sutured of the target tissue sequentially along the direction from the second end to the first end to be cut by the cutting knife immediately after the local part is sutured by the staples. I.e., side-stitch and side-cut, the cut is delayed a little bit from the stitch for each portion of the target tissue to be stapled and cut.

For example, in the case of such a side seam edge cut, for example, during the movement of the cutting knife 605 with the staple pusher shoe 60 in the direction from the second end to the first end, the end of the staple pusher shoe 60 near the first end of the end effector 1 pushes out the staples ahead of the staple pusher shoe 700, and the cutting knife 605 is located on the side of the end of the staple pusher shoe 60 near the second end of the end effector 1 and spaced apart from the end of the staple pusher shoe 60 by a preset distance. For example, the preset distance is the sum of the widths of 2-4 staples which are continuously arranged in the direction from the second end to the first end, so that the cutting is more suitable than the lagging degree of the sewing for each part of the target tissue to be sutured and cut, and the good suturing and cutting effect can be ensured.

For example, for the various embodiments described above in which stapling is performed along a path from the second end of the end effector 1 to the first end of the end effector 1, the stapler 100 further includes a first drive mechanism 10, the first drive mechanism 10 being configured to: in the closing stage, the first driving mechanism 10 is detachably connected with the closing mechanism to drive the closing mechanism to close the end effector 1; during the staple ejection stage, the first drive mechanism 10 disengages from the closure mechanism and drives the staple ejection assembly to eject the staples from the cartridge assembly 11. Stapler 100 further comprises a second drive mechanism 20, second drive mechanism 20 being detachably connected to first drive mechanism 10, second drive mechanism 20 being configured to be detachably connected to the closure mechanism during the closure phase and being configured to be moved towards the second end of end effector 1 under the drive of first drive mechanism 10 to bring the closure mechanism into contact with cartridge assembly 11 and anvil 12 and to apply pressure to cartridge assembly 11 and anvil 12 to close end effector 1; the second driving mechanism 20 is also configured to be separated from the closing mechanism after the end effector 1 is closed, and continue to move towards the second end of the end effector 1 to be connected with the staple pushing driving mechanism 40 under the driving of the first driving mechanism 10 and continue to move towards the second end of the end effector 1 to drive the staple pushing driving mechanism 40 to reach the second end of the end effector 1 to be connected with the staple pushing slider 60; the second drive mechanism 20 is also configured to drive the staple driving mechanism 40 to move in a direction from the second end to the first end to staple the target tissue under the drive of the first drive mechanism 10 during the staple pushing stage. The structures of the first driving mechanism 10, the second driving mechanism 20, and the like can be referred to the description of the previous embodiments, and are not repeated here.

For example, for the various embodiments described above in which the stapling is performed along the path from the second end of the end effector 1 to the first end of the end effector 1, the cutting drive device is configured to drive the cutting device to cut the target tissue under the drive of the first drive mechanism 10.

For example, for the various embodiments described above in which stapling is performed along a path from the second end of the end effector 1 to the first end of the end effector 1, the closure mechanism is a sleeve 2 that is sleeved outside the second drive mechanism 20, the cartridge assembly 11 includes a first end that is adjacent to the sleeve 2, and the anvil 12 includes a first end that is adjacent to the sleeve 2; in the closing stage, the second driving mechanism 20 is driven by the first driving mechanism 10 to move toward the end effector 1, so as to drive the sleeve 2 to move toward the end effector 1, so that the sleeve 2 is sleeved on the first end of the cartridge assembly 11 and the first end of the anvil 12 to apply pressure to the first end of the cartridge assembly 11 and the first end of the anvil 12 to close the end effector 1. For the detailed structure, reference is made to the previous description of the sleeve 2 closing the end effector 1. Features of various embodiments of the disclosure may be combined without conflict.

At least one embodiment of the present disclosure provides a handle 9, the handle 9 may be used with a stapler 100, and the stapler 100 may be used as a medical instrument, such as a surgical instrument, for grasping a target tissue and stapling and cutting the target tissue. The handle 9 is configured to be detachably connected to the detachable portion 3 of the stapler 100, the detachable portion 3 comprising an end effector 1, said end effector 1 comprising a cartridge assembly 11 and an anvil 12.

Illustratively, fig. 18A-18B are schematic views of a handle provided in an embodiment of the present disclosure, and fig. 19 is an enlarged schematic view of a dial and a bi-directional control button. As shown in fig. 18A-18B and fig. 19, the handle 9 includes a dial 93 switch, the dial 93 switch includes a dial 93 disposed on the first surface 01 of the handle 9, the dial 93 is configured to be dialed and rotated to control the swing direction and the swing angle of the end effector 1, so as to control the swing direction and the swing angle of the end effector 1 by operating the dial 93, and the operation is convenient and easy to control during the operation.

For example, the dial 93 is configured to be toggled toward a first rotation direction to rotate toward the first rotation direction to drive the end effector 1 to swing toward a first swing direction, and configured to be toggled toward a second rotation direction to rotate toward the second rotation direction to drive the end effector 1 to swing toward a second swing direction, the first rotation direction is opposite to the second rotation direction, so that the end effector 1 is controlled to swing toward different directions by operating the dial 93, and the operation is convenient and easy to control during the operation.

For example, the dial 93 has gear position marks thereon; according to the gear mark, when the user operates the dial 93 to rotate towards the first rotating direction by one gear, the end effector 1 rotates towards the first swinging direction by an angle corresponding to one gear; and according to the gear mark, when the user operates the dial 93 to rotate one gear towards the second rotating direction, the end effector 1 rotates an angle corresponding to one gear towards the second swinging direction, so that the swinging amplitude of the end effector 1 towards different directions can be adjusted by operating the dial 93, and the operation is convenient and easy to control in the operation process.

For example, as shown in fig. 18A-18B and 19, the gear position indicia includes a plurality of gear grooves 900 arranged in a first rotational direction and a second rotational direction, the plurality of gear grooves 900 configured to: the dial 93 rotates through one gear slot 900 every time towards the first rotating direction, so that the end effector 1 rotates towards the first swinging direction by an angle corresponding to one gear; the end effector 1 rotates by an angle corresponding to one shift position toward the second swing direction every time the dial 93 rotates by one shift position slot 900 toward the second rotation direction. In this way, the operator can adjust the number of the gear position slots 900 by the tactile sensation so as to control the gear position at which the swing end effector 1 swings.

For example, as shown in fig. 18A to 18B and fig. 19, the extending direction of the shift gate 900 coincides with the extending direction of the handle 9, and the first and second rotating directions are substantially perpendicular to the extending direction of the handle 9.

The detachable portion 3 further comprises a closing mechanism, a staple pushing assembly and a cutting device, which are specifically referred to the description of the previous embodiments. As shown in fig. 18A-18B, the handle 9 further includes a bi-directional control knob 94, the bi-directional control knob 94 including a first end 941 and a second end 942, the bi-directional control knob 94 configured to: the first end is pressed to control the closing stage, the nail pushing stage and the cutting stage to be carried out in sequence; in the closing stage, the closing mechanism closes the cartridge component 11 and the anvil 12 to close the end effector 1 to clamp the target tissue; in the staple pushing stage, the staple pushing assembly pushes out staples from the cartridge assembly 11 to suture target tissues; in the cutting stage, the cutting device cuts the target tissue; and, the bi-directional control button 94 is further configured to: the second end is depressed to control the closure mechanism from apposing the cartridge assembly 11 and the anvil 12, the cartridge assembly 11 and the anvil 12 being moved away from each other to open the end effector 1.

For example, as shown in fig. 18A-18B and 19, the bidirectional control button 94 is located on the first surface 01 of the handle 9 adjacent to the dial 93 switch and aligned with the dial 93 switch in the extending direction of the handle 9 to facilitate the operator's operation of the dial 93 and the bidirectional control button 94. For example, a first end of the bidirectional control knob 94 is opposite to a second end of the bidirectional control knob 94 in the extending direction of the handle 9 to further facilitate the operation of the first and second ends 941 and 942 of the bidirectional control knob 94.

For example, as shown in fig. 18A-18B and fig. 19, the handle 9 further comprises a safety prompt button 95, the safety prompt button 95 is configured to be in a normal closing prompt state after the first end 941 of the bidirectional control button 94 is pressed and after the normal execution of the closing stage is completed, so as to prompt the operator to press the first end 941 of the bidirectional control button 94 continuously to execute the staple pushing stage, and is configured to be in a normal suturing prompt state after the normal execution of the staple pushing stage is completed, so as to prompt the operator to press the first end 941 of the bidirectional control button 94 continuously to execute the cutting stage, and is configured to be in a normal cutting prompt state after the normal execution of the cutting stage is completed, so as to prompt the operator to press the second end 942 of the bidirectional control button 94 to open the end effector 1.

For example, in the normal closing prompt state, the normal suturing prompt state and the normal cutting prompt state, the safety prompt button 95 protrudes from the surface of the handle 9, otherwise, the safety prompt button 95 is recessed from the surface of the handle 9 or is substantially flush with the surface of the handle 9, so that the operator can know whether each stage is normally performed by observing or touching the safety prompt button 95 at each stage, and thus, the next operation is determined.

For example, as shown in fig. 18A-18B and 19, the handle 9 also has a second surface 05, the second surface 05 being adjacent to and intersecting the first surface 01, and the safety reminder button 95 being located on the second surface 05 of the handle 9.

At least one embodiment of the present disclosure provides a main body of a stapler 100, and fig. 20 is a schematic view of the main body of the stapler 100 according to an embodiment of the present disclosure. As shown in fig. 20, the main body of the stapler 100 includes any one of the handles 9 provided in the embodiments of the present disclosure, and a driving part 99 connected to the handle 9. The overall extension direction of the driving portion 99 is an axial direction, and the axial direction intersects with the extension direction of the handle 9; the end of the drive section 99 remote from the handle 9 is detachably connected to the detachable portion 3 and comprises an electric motor and a rear swing drive member 82; the electric motor is in signal connection with a dial 93 switch, and the dial 93 switch controls the work of the electric motor; the rear swing driving member 82 is connected to an electric motor extending in the axial direction, and the electric motor is configured to rotate under the on-off control of the dial 93 to drive the rear swing driving member 82 to move in the axial direction to drive the end effector 1 to swing, so that the operation of the electric motor can be controlled by operating the dial 93 on the handle 9, and the movement of the rear swing driving member 82 can be controlled to control the swing angle of the end effector 1, and the operation is simple.

For example, the driving portion 99 is detachably connected to the handle 9, and the driving portion 99 and the handle can be replaced for the main body of the stapler 100, which is advantageous for cost saving.

For example, when the dial 93 is configured to be rotatable in the first rotational direction or the second rotational direction by one shift position, the electric motor rotates forward by one shift position for every rotation of the dial 93 in the first dial direction by a distance of one shift position to drive the rear swing drive member 82 to move axially away from the handle 9 by one shift position to rotate the end effector 1 by an angle of one shift position in the first swing direction; for every one gear of dial 93 rotating towards the second dialing direction, the electric motor rotates reversely by one gear to drive the rear swing driving member 82 to move axially close to the handle 9 by a distance of one gear to rotate the end effector 1 towards the second swing direction by an angle of one gear, so that the direction and gear of the electric motor rotation can be conveniently controlled by operating the dial 93 on the handle 9, thereby controlling the movement of the rear swing driving member 82 to control the swing angle of the end effector 1, and the operation is simple.

For example, the driving unit 99 further includes a first driving mechanism 10, the first driving mechanism 10 and the rear swing driving member 82 extend in the same direction and are arranged side by side, and the first driving mechanism 10 is configured to: in the closing stage, the first driving mechanism 10 is detachably connected with the closing mechanism to drive the closing mechanism to close the end effector 1; in the staple pushing stage after the closing stage, the first driving mechanism 10 is separated from the closing mechanism and drives the staple pushing assembly to push out staples from the cartridge assembly 11 so as to suture the target tissue; in the cutting stage, the first driving mechanism 10 drives the cutting device to cut the target tissue. As to the specific features of the first driving mechanism 10, please refer to the description of the previous embodiment, which will not be repeated here.

For example, as shown in fig. 20, the driving portion 99 is located on the first surface 01 of the handle 9, axially intersecting the first surface 01; the driving portion 99 includes a first end 941 connected to the handle 9 and a second end 942 axially distant from the handle 9, the first surface 01 faces the second end 942 of the driving portion 99 to facilitate the operator to dial the dial 93 on the first surface 01, and the second surface 05 is adjacent to and intersects the first surface 01 to facilitate the operator to recognize the safety warning switch on the second surface 05.

At least one embodiment of the present disclosure provides a stapler 100, and the stapler 100 includes a main body of any one of the staplers 100 provided by the embodiments of the present disclosure, and a detachable portion 3. The detachable portion 3 of the stapler 100 is detachably connected to the main portion 4 of the stapler 100, the detachable portion 3 further includes a front swing driving assembly connected to the end effector 1, the detachable portion 3 is detachably connected to the main portion of the stapler 100 so that the front swing driving assembly is detachably connected to the rear swing driving member 82, and the front swing driving assembly drives the end effector 1 to swing under the driving of the rear swing driving member 82. The specific structure of the front swing driving assembly and the rear swing member refers to the description of the previous embodiment, and will not be repeated here.

For example, for a stapler 100 including any of the stapler 100 bodies provided by the embodiments of the present disclosure, the detachable portion 3 further includes a second driving mechanism 20 extending in the axial direction; the detachable portion 3 is connected to the main body of the stapler 100 to detachably connect the second driving mechanism 20 to the first driving mechanism 10; the second driving mechanism 20 is configured to be detachably connected with the closing mechanism in the closing stage and move towards the end effector 1 under the driving of the first driving mechanism 10 to enable the closing mechanism to close the end effector 1; second drive mechanism 20 is further configured to disengage from the closure mechanism during the staple ejection stage and continue to move toward second end 942 of end effector 1 under the drive of first drive mechanism 10 to drive the staple ejection assembly to eject staples from cartridge assembly 11; the second drive mechanism 20 is further configured to: in the cutting stage, the second driving mechanism 20 drives the cutting device to cut the target tissue under the driving of the first driving mechanism 10. The specific structure of the second driving mechanism 20 and the first driving mechanism 10 refers to the description of the previous embodiment, and is not repeated here.

The above description is intended to be illustrative of the present invention and not to limit the scope of the invention, which is defined by the claims appended hereto.

Claims

1. An stapler, comprising:

the end effector comprises a nail bin assembly and a nail anvil, wherein the nail bin assembly is internally provided with anastomotic nails;

a closure mechanism configured to drive the staple cartridge assembly and the anvil into apposition to close the end effector;

a staple pushing assembly configured to push the staples out of the cartridge assembly; and

a first drive mechanism, wherein the first drive mechanism is configured to: during a closing stage, the first driving mechanism is detachably connected with the closing mechanism to drive the closing mechanism to close the end effector; in a staple ejection stage following the closure stage, the first drive mechanism disengages from the closure mechanism and drives the staple ejection assembly to eject the staples from the cartridge assembly.

2. The stapler of claim 1 wherein said first drive mechanism moves toward said end effector during a closing phase in which said first drive mechanism drives said closure mechanism to close said end effector and a staple pushing phase in which said staple pushing assembly is driven to push said staples out of said cartridge assembly.

3. The stapler of claim 1, further comprising:

a second drive mechanism coupled to said first drive mechanism and removably coupled to said closure mechanism during said closure phase and configured to be driven by said first drive mechanism to move toward said end effector to bring said closure mechanism into contact with and apply pressure to said cartridge assembly and anvil to close said end effector;

the second drive mechanism is further configured to disengage from the closure mechanism during the staple ejection stage and drive the staple ejection assembly to eject the staples from the cartridge assembly upon actuation of the first drive mechanism.

4. The stapler of claim 3, wherein the stapler includes a main body portion and a detachable portion, the detachable portion being detachably connected with the main body portion;

the first drive mechanism is located on the main body portion, the second drive mechanism, the closure mechanism, the staple pushing assembly and the end effector mechanism are located on the detachable portion, and the detachable portion is connected with the main body portion so that the second drive mechanism is detachably connected with the first drive mechanism.

5. The stapler of claim 4, wherein the first drive mechanism and the second drive mechanism extend in an axial direction, the first drive mechanism including a first end distal from the end effector in the axial direction and a second end opposite the first end thereof, the second drive mechanism including a first end proximal to the first drive mechanism and a second end distal from the first drive mechanism in the axial direction;

the second end of the first driving mechanism is detachably connected with the first end of the second driving mechanism, and the first driving mechanism moves along the axial direction so as to drive the second driving mechanism to move along the axial direction.

6. The stapler of claim 5, wherein the first drive mechanism is a single drive rod.

7. The stapler of claim 5, further comprising a motorized drive mechanism, wherein a first end of the first drive mechanism is coupled to the motorized drive mechanism, and wherein the motorized drive mechanism drives the first drive mechanism to move in the axial direction.

8. The stapler of claim 3, further comprising:

a separable connection configured to connect with the closure mechanism and the second drive mechanism to move toward the end effector as the second drive mechanism moves during the closure phase to drive the closure mechanism to move toward the end effector to close the end effector, and to disconnect from the closure mechanism or from the second drive mechanism to stop driving the closure mechanism to move after the closure mechanism drives the end effector to close.

9. The stapler of claim 8, wherein the separable coupling structure is removably coupled to the second drive mechanism and removably coupled to the closure mechanism; alternatively, the first and second electrodes may be,

the separable connecting structure is fixedly connected with one of the second driving mechanism and the closing mechanism and detachably connected with the other of the second driving mechanism and the closing mechanism.

10. The stapler of claim 8, wherein the first and second drive mechanisms extend in an axial direction, a direction perpendicular to the axial direction is a longitudinal direction, and the separable connector structure includes a first end and a second end in the longitudinal direction;

the second drive mechanism comprises a first connecting structure and the closure mechanism comprises a second connecting structure;

during the process of driving the closing mechanism toward the end effector by the separable connector structure, a first end of the separable connector structure is connected to the second drive mechanism by the first connector structure, and a second end of the separable connector structure is connected to the closing mechanism by the second connector structure;

the separable connecting structure is configured to be movable relative to the first and second connecting structures in the longitudinal direction to separate the second end of the separable connecting structure from the closure mechanism or to separate the first end of the separable connecting structure from the second drive mechanism.