CN113491548A

CN113491548A - Separating piece for surgical instrument and surgical instrument

Info

Publication number: CN113491548A
Application number: CN202010261022.9A
Authority: CN
Inventors: 孙宝峰; 付建新; 周小朋
Original assignee: Fengh Medical Co ltd
Current assignee: Fengh Medical Co ltd; Jiangsu Fengh Medical Equipment Co Ltd
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2021-10-12
Also published as: WO2021197330A1

Abstract

The invention provides a separating piece for a surgical instrument, which comprises a mounting part and a working part which are connected, wherein the mounting part and the surgical instrument are detachably mounted through a matching mechanism, the working part is used for stripping tissues, the matching mechanism comprises a clamping mechanism, and the clamping mechanism enables the separating piece to be elastically matched with or separated from the surgical instrument so as to enable the mounting part and the surgical instrument to be detachably mounted. After the separating piece is arranged on the surgical instrument, a doctor firstly uses the separating piece to strip the target tissue from other tissues, then the doctor moves the surgical instrument forwards along the same trend to enable the target tissue to enter between the nail cabin seat and the nail abutting seat, and the surgical instrument is operated to cut and suture the target tissue. The separating piece is used for stripping the target tissue, so that the operation of a doctor is easier and more convenient; and the separating piece is elastically matched and connected with the surgical instrument, so that the connection is reliable and the disassembly and the assembly are convenient.

Description

Separating piece for surgical instrument and surgical instrument

Technical Field

The present invention relates to the field of medical devices, and in particular to a separator for a surgical device for separating tissue. The invention also relates to a surgical instrument to which the separator can be mounted.

Background

An anastomat suitable for surgical operation is a surgical instrument which can suture wounds of patients and simultaneously excise redundant tissues, and is widely applied to excision and anastomosis of tissues in minimally invasive operations of abdominal surgery, gynecology, pediatrics, thoracic surgery and the like. The stapler is advanced into the body through the cannula of a trocar precisely positioned at the surgical site, which in turn makes a longitudinal incision in the tissue and applies staples on opposite sides of the incision, thereby severing and stapling the tissue, similar to a stapler. The stapler comprises an end effector comprising a staple cartridge seat for receiving a staple cartridge and a staple abutment seat; the stapler also includes a cutting member operably supported relative to the cartridge seat. Once the clinician has determined that the end effector is properly grasping tissue and in the closed position, the stapler can be fired to sever and staple the tissue.

During surgery, a surgeon sometimes needs to cut and staple certain target tissues, which are attached to other tissues. For example, although a surgeon sometimes needs to cut and suture a blood vessel, the blood vessel is usually attached to other tissues, and in order to cut and suture the blood vessel, the surgeon needs to peel the blood vessel from the other tissues, to put the blood vessel between the staple holder and the cartridge holder, and to finally cut and suture the blood vessel using a stapler.

When a surgeon operates an existing surgical instrument, if it is desired to cut and staple a particular target tissue, the surgeon typically needs to repeatedly adjust the angle of the surgical instrument to align the distal end of the end effector with the target tissue, apply a force to the surgical instrument in a distal direction to separate the distal end of the end effector from the target tissue and then position the target tissue between the staple abutment and the staple cartridge receptacle to cut and staple the target tissue.

However, the design of the distal end of existing end effectors is not suitable for stripping the target tissue, and the surgeon's operation of separating the target tissue using the end effector of the surgical instrument is time consuming and labor intensive.

Disclosure of Invention

In view of the shortcomings of the prior art, the present invention is directed to a separator for a surgical instrument, which is used by a surgeon to separate a target tissue after being mounted on the surgical instrument, and which is convenient to operate.

The invention is realized by the following technical scheme: a separator for surgical instrument, the separator includes installation department and the work portion that links to each other, the installation department with surgical instrument passes through mating mechanism detachably and installs, the work portion is used for peeling off the tissue, mating mechanism includes clamping mechanism, clamping mechanism makes the separator with surgical instrument elasticity connects or breaks away from, so that the installation department with surgical instrument detachably installs.

Furthermore, the clamping mechanism comprises a clamping part arranged on the separating piece and a clamping interface arranged on the surgical instrument, and in a first state, the clamping part is clamped into the clamping interface under the action of elastic force to realize elastic matching; in the second state, the clamping part overcomes the elastic force to separate from the clamping interface.

Further, the joint portion has first end and second end, first end with the installation department links to each other, the second end with joint interface elasticity connects or breaks away from.

Further, the second end rotates around the first end.

Further, the first end includes the pivot, the installation department is provided with the shaft hole, the pivot accept in the shaft hole.

Further, the shaft hole is partially opened, and part of the rotating shaft is accommodated in the shaft hole.

Further, the separator still includes the supporting part, the supporting part has first portion and second part, the first portion is connected with the installation department and covers the shaft hole, the second part with joint portion butt is with elastic support joint portion.

Further, the axis of rotation is perpendicular to the central symmetry plane of the longitudinal direction of the separating element.

Further, in the first state, the second end protrudes out of the surface of the mounting portion.

Further, the second end includes a clamping surface, an inclined surface disposed at an angle to the clamping surface, and the clamping surface extends vertically.

Further, the second end further includes a top surface disposed between the engagement surface and the ramp surface.

Further, the installation part is provided with an accommodating space, and part of the clamping part is accommodated in the accommodating space.

Further, the accommodation space includes an opening penetrating through the mounting portion, in the first state, the second end of the clamping portion protrudes out of the opening.

Further, the separating part further comprises an elastic body abutted to the clamping portion, and at least part of the elastic body is contained in the containing space.

Further, the separator still include with the elastomer of joint portion butt, the elastomer with joint portion butt is with elastic support joint portion.

Further, the elastomer is the supporting part, at least a part of supporting part is made by elastic material, the supporting part has first portion and second part, the first portion with the installation department links to each other, the second part with joint portion butt.

Further, the separating part further comprises another elastic body arranged between the supporting part and the clamping part.

Further, at least a part of the clamping part is made of elastic materials.

Furthermore, the matching mechanism further comprises an inserting mechanism, the inserting mechanism comprises an inserting portion arranged on the separating piece and an inserting channel arranged on the surgical instrument, and the inserting portion and the clamping portion are inserted into the surgical instrument along the inserting channel.

Further, the insertion channel extends from a distal end of the surgical instrument in a proximal direction, and the card interface is in communication with the distal end of the insertion channel and extends through a sidewall of the insertion channel.

Furthermore, the side wall is provided with a first hollow part and a second hollow part which are sequentially communicated with the far end of the clamping interface, the width of the second hollow part is larger than that of the first hollow part, and the width of the clamping interface is larger than that of the first hollow part.

Furthermore, the clamping interface, the first hollow part and the second hollow part are coaxially arranged.

Further, the surgical instrument is a stapler, and the separator is removably mounted with an end effector of the stapler.

Further, the separating piece is detachably mounted with the nail abutting seat of the end effector.

Furthermore, the clamping mechanism comprises a clamping part arranged on the separating piece and a clamping interface arranged on the nail abutting seat; the clamping portion is elastically connected with the clamping interface in a matched mode, and the clamping interface is arranged on the nail abutting surface or the back surface of the nail abutting seat.

Further, a first wedge-shaped part is arranged at the far end of the nail abutting seat, the first wedge-shaped part is provided with a first inclined surface, a second wedge-shaped part is arranged at the near end of the working part, and the second wedge-shaped part is provided with a second inclined surface; the separating piece is arranged behind the nail abutting seat, and the first inclined surface is abutted to the second inclined surface.

Further, the combined thickness of the first and second wedges may be substantially equal to the thickness of the anvil proximate the proximal end of the first ramp and/or substantially equal to the thickness of the separator proximate the distal end of the second ramp.

Further, the mounting portion extends from the second ramp in a proximal direction.

Further, the working portion includes a proximal end and a distal end, and the width of the working portion gradually decreases in a direction from the proximal end toward the distal end.

Compared with the prior art, the invention has the beneficial effects that: after the separating piece is arranged on the surgical instrument, a doctor firstly uses the separating piece to strip the target tissue from other tissues, then the doctor moves the surgical instrument forwards along the same trend to enable the target tissue to enter between the nail cabin seat and the nail abutting seat, and the surgical instrument is operated to cut and suture the target tissue. The separating piece is used for stripping the target tissue, so that the operation of a doctor is easier and more convenient; and the separating piece is elastically matched and connected with the surgical instrument, so that the connection is reliable and the disassembly and the assembly are convenient.

The invention also provides a surgical instrument for mounting the separator.

The invention is realized by the following technical scheme: a surgical instrument comprising an end effector to which is mounted a separator according to any one of the preceding claims.

Compared with the prior art, the invention has the beneficial effects that: the separating piece is used for stripping the target tissue, so that the operation of a doctor is easier and more convenient; and the clamping mechanism enables the separating piece to be elastically matched and connected with the surgical instrument, so that the connection is reliable and the disassembly and the assembly are convenient.

Drawings

FIG. 1 is a front view of a surgical instrument provided by the present invention;

FIG. 2 is a perspective view of the anvil and separator of the surgical instrument of FIG. 1, showing the front and partial back, respectively;

FIGS. 3 and 4 are perspective views of the separator shown in FIG. 2;

FIG. 5 is an exploded perspective view of the separator shown in FIG. 4;

FIG. 6 is a partial perspective view of the staple cartridge of the surgical instrument illustrated in FIG. 1;

figures 7 and 8 are perspective views of the combination of the anvil, the separator and the packaging box;

FIGS. 9 and 10 are exploded perspective views of the combination shown in FIG. 8;

FIG. 11 is a perspective view of the package shown in FIG. 10;

fig. 12 and 13 are sectional views in the longitudinal direction of fig. 7, and the state change of fig. 12 to 13 shows a state change process of detaching the separating member using the packing box;

fig. 14 is an enlarged view of a portion a in fig. 12;

fig. 15 is an enlarged view of portion B of fig. 12;

FIG. 16 is a perspective view of a separator provided in accordance with a second embodiment of the invention; FIG. 17 is an exploded perspective view of the separator member shown in FIG. 16;

FIG. 18 is an exploded perspective view of a separator provided in accordance with a third embodiment of the invention;

FIG. 19 is a perspective view of a separator provided in accordance with a fourth embodiment of the invention;

FIG. 20 is an exploded perspective view of the separator member shown in FIG. 19;

FIG. 21 is a perspective view of a fifth embodiment of the invention providing a separator mounted to an anvil;

FIG. 22 is a perspective view of the separator member shown in FIG. 21;

FIG. 23 is a perspective view of a separator mounted to an anvil according to a sixth embodiment of the present invention;

fig. 24 and 25 are exploded perspective views of fig. 23;

FIG. 26 is a perspective view of the separator member shown in FIG. 23;

FIG. 27 is a perspective view of a separator mounted to an anvil according to a seventh embodiment of the present invention;

FIG. 28 is a perspective view of the separator member shown in FIG. 27;

fig. 29 is an exploded perspective view of the separator shown in fig. 28.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "proximal", "posterior" and "distal", "anterior" are used herein with respect to a clinician manipulating a handle assembly of a surgical instrument. The terms "proximal" and "posterior" refer to the portion that is closer to the clinician, and the terms "distal" and "anterior" refer to the portion that is further from the clinician. For example, the handle assembly is proximal and posterior, and the end effector is distal and anterior; as another example, the proximal end of a component part can be referred to as being relatively close to one end of the handle assembly, and the distal end can be referred to as being relatively close to one end of the end effector. In the present invention, the relative positional relationship of the components of the separating element, for example, relative to the "proximal" or "distal" ends, is referenced to the condition of the separating element being mounted on the surgical instrument. The terms "upper" and "lower" are used with reference to the relative positions of the staple cartridge seat and the staple cartridge seat of the end effector, specifically, the staple cartridge seat is "upper" and the staple cartridge seat is "lower".

The definition "longitudinal" is the direction from the distal to the proximal or the direction from the proximal to the distal. The "longitudinal" direction of the separator member is defined in the state in which the separator member is mounted to the surgical instrument. The "longitudinal direction" of the packing box is defined in a state that the separate member is mounted to the packing box, i.e., the longitudinal direction of the packing box is parallel to the longitudinal direction of the separate member. Further, a member extending lengthwise means that the member has a length greater than its width, for example, being elongated overall, but it should be understood that "extending lengthwise" is not intended to limit the specific shape and location of the member.

The surface of the separator adjacent to the target tissue is defined as the "front side" and the surface of the separator facing away from the target tissue is defined as the "back side". Specifically, when the separating member is operated, the concave surface of the working portion is close to the target tissue and can peel the target tissue from other tissues, the surface of the side where the concave surface is located is defined as a front surface, and the surface of the side where the convex surface is located is defined as a back surface.

It will be understood that the terms "proximal", "distal", "rear", "front", "upper", "lower", "front" and "back" are used for convenience of description, however, the surgical instrument may be used in many orientations and positions and thus these terms are not intended to be limiting and absolute. "longitudinal" is also defined for convenience of description. In the present invention, the above definitions shall follow, if any, if they are otherwise explicitly defined and limited.

In the present invention, unless otherwise specifically stated or limited, "connected" and the like terms are to be understood broadly, and for example, may be fixedly connected, detachably connected, movably connected, or integrated; either directly or indirectly through intervening media, either internally or in any other relationship. "connected" does not include integral entities, but rather means the same as "connected". The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Fig. 1 illustrates a surgical instrument 100 of the present invention.

Referring to fig. 1, the surgical instrument of the present invention is a stapler, preferably a motorized stapler. The surgical instrument 100 includes a main unit 10, and a battery pack 12 detachably mounted to the main unit 10. It will be appreciated by those skilled in the art that the surgical instrument may be a manual stapler, and any embodiment that is the same or similar to the present embodiment is within the scope of the present invention.

The host 10 includes a shaft assembly 14, a housing 16 disposed at one end of the shaft assembly 14, and an end effector 18 disposed at the other end of the shaft assembly 14, with a cutting member (not shown) disposed within the end effector 18.

The shaft assembly 14 includes a sleeve 20 and a mandrel (not shown) received within the sleeve 20. A motor and a transmission mechanism are provided in the housing 16, and the motor drives the end effector 18 and the cutting member via the transmission mechanism. The end effector 18 includes a cartridge seat 28 and an anvil seat 30 rotatably coupled to the cartridge seat 28, the cartridge seat 28 for operably supporting a cartridge assembly (not shown) positioned therein, the anvil seat 30 being selectively movable between an open position and a closed position to clamp or unclamp tissue. A cutting member is disposed within end effector 18 for cutting tissue, and a cartridge assembly is provided for stapling tissue.

The transmission mechanism includes an end effector drive that drives the anvil 30 of the end effector 18 to rotate relative to the cartridge seat 28 for selective movement between the closed and open positions. Generally, the end effector 18 drive mechanism includes a gear, cam, and sleeve 20, the gear driving the sleeve 20 to move linearly by translation of the cam, the sleeve 20 moving linearly driving the anvil 30 to rotate by the translation mechanism. The specific structure of the end effector driving device is the same as or similar to that of the prior art, and is not described in detail.

The drive mechanism further comprises a cutting member drive, typically comprising a gear, a rack, a spindle, the gear rotationally driving the rack, the spindle, the cutting member in linear motion, so that the cutting member can cut tissue. The specific structure of the cutting member driving device is the same as or similar to that of the prior art, and is not described in detail.

In use of the surgical instrument, first, the end effector drive assembly drives the sleeve 20 and thus the anvil 30 into rotational engagement with the cartridge seat 28 to clamp the target tissue; then, the motor is started and rotates forwards, the cutting member driving device drives the cutting member to feed through the mandrel, the cutting member moves from the initial position to the end position in the end effector 18 of the surgical instrument, and the cutting member synchronously pushes the staple pushing block in the staple bin to move from the initial position to the end position, so that the effect of suturing the cut tissue while cutting redundant tissue is achieved; then, the motor rotates reversely, and the cutting member driving device drives the cutting member to retract to the initial position through the mandrel; then, the end effector drive assembly drives the sleeve 20 and thus the anvil 30 open to release the tissue; finally, the end effector drive drives the sleeve 20 to drive the anvil 30 closed. Of course, it is desirable to close the anvil 30 relative to the cartridge seat 28 before and after use of the surgical instrument so that the end effector 18 may be inserted into or removed from the patient via the penetrator cannula, and will not be described in detail.

Fig. 2-15 illustrate a separator of a first embodiment of the present invention, which is used in conjunction with a surgical instrument 100.

Referring to fig. 1 and 2, the present embodiment further provides a separating member 200 for use with the surgical instrument 100, wherein the separating member 200 is used for stripping tissue, and in particular, the separating member 200 is used for stripping target tissue from other tissue, so as to facilitate cutting and suturing of the target tissue by the surgical instrument 100. For example, the surgeon may first use separator 200 to strip the vessel from the other tissue, and then use surgical instrument 100 to cut and suture the stripped vessel.

The separating member 200 is removably coupled to the surgical instrument 100. That is, the separator 200 is switched between a first state in which the separator 200 is connected to the surgical instrument 100 and a second state; in the second state, the separator 200 is disengaged from the surgical instrument 100.

Thus, when it is desired to use the separator 200, the surgeon attaches the separator 200 to the surgical instrument 100, and the surgeon first peels the target tissue away from the other tissue using the separator 200, and then moves the surgical instrument 100 forward to bring the target tissue between the cartridge seat 28 and the anvil seat 30, and operates the surgical instrument 100 to cut and staple the target tissue. When the separator 200 is not needed, the surgeon switches the separator 200 from the first state to the second state, and the separator 200 is disengaged from the surgical instrument 100, thereby avoiding the separator 200 occupying the operating space and affecting the convenience of the surgical instrument 100 in cutting and stapling other tissues.

Specifically, the separator 200 is removably coupled to the end effector 18 of the surgical instrument 100. The end effector 18 is the working element of the surgical instrument 100 that directly contacts and cuts and staples tissue, and the separator 200 is removably attached to the end effector 18 to conform to the operating habits of the surgeon and facilitate the surgeon's operation.

More specifically, the separator 200 is removably coupled to the anvil 30 of the end effector 18. Because other components such as a nail bin and the like are not installed on the nail abutting seat 30 of the existing surgical instrument 100, the separating piece 200 is detachably connected with the nail abutting seat 30, the nail abutting seat 30 is reasonably utilized, the installation and the disassembly of other components (such as the nail bin) cannot be influenced, and the design is more reasonable. More specifically, the separating element 200 is detachably connected to the distal end of the nail seat 30, so as to better conform to the operating habit of the doctor and facilitate the operation of the doctor.

Referring to fig. 3 to 5, the separating member 200 includes a mounting portion 220 and a working portion 230. Mounting portion 220 is removably coupled to surgical instrument 100, and in particular, to the distal end of anvil 30 of end effector 18. The working portion 230 is used to dissect tissue.

Mounting portion 220 is removably coupled to surgical instrument 100 via a mating mechanism. The matching mechanism comprises an inserting mechanism and a clamping mechanism. The docking mechanism includes docking portion 222 provided on the separating member 200 and docking channel 50 provided on the surgical instrument 100. The clamping mechanism includes a clamping portion 240 provided on the separate piece 200 and a clamping interface 60 provided on the upper surgical instrument 100. The plug channel 50 is in communication with the card interface 60, and in particular, the card interface 60 is in communication with the proximal end of the plug channel 50 and extends through the sidewall of the plug channel. When separating element 200 is installed, insertion portion 222 and clip portion 240 are inserted into surgical instrument 100 along insertion channel 50, and after a certain insertion stroke, clip portion 240 is clipped into clip interface 60, and separating element 200 is secured to surgical instrument 100. Thus, the mounting portion 220 of the separating member 200 and the surgical instrument 100 are detachably connected by plugging and clamping, and the mounting is reliable and the detachment is convenient.

The mounting portion 220 includes a mating portion 222 and a snap portion 240 connected together. The snap 240 resiliently couples with the surgical instrument 100. Namely: the clamping portion 240 is connected with the surgical instrument 100 under the action of elastic force, and is separated from the surgical instrument 100 under the action of the elastic force, so that the connection is reliable, and the disassembly and the assembly are convenient. The source of the elastic force may be the elasticity of the clip portion 240 itself; other elastic bodies may abut against the clip portion 240, and the other elastic bodies may provide elastic force to the clip portion 240.

Specifically, the clip portion 240 is elastically connected to the clip interface 60. That is, the snap 240 snaps into the snap interface 60 under the force of the spring, such that the separator 200 is secured to the surgical instrument 100. The clip 240 can be disengaged from the clip interface 60 against the force of the spring, thereby disengaging the separating member 200 from the surgical instrument 100.

Clip portion 240 has a first end 241 and a second end 242, first end 241 being connected to insertion portion 222 and second end 242 being resiliently coupled to surgical instrument 100. In particular, second end 242 is rotated about first end 241 to allow decoupling member 200 to be secured to or disengaged from surgical instrument 100, thereby providing a releasable connection. The second end 242 rotates about the first end 241, i.e. the axis of rotation is at the position of the first end 241. In this embodiment, the axis of rotation of the second end 242 is perpendicular to the central symmetry plane of the separator 200 in the longitudinal direction. In this embodiment, the first end 241 is located at a distal end relative to the second end 242, but one skilled in the art can also appreciate that the first end 241 may be located at a proximal end relative to the second end 242.

Specifically, the first end 241 includes a rotating shaft 243, the insertion-connection part 222 is provided with a shaft hole 224, the rotating shaft 243 is installed in the shaft hole 224, and the rotating shaft 243 rotates in the shaft hole 224 to rotate the clamping part 240, and finally, the separating element 200 is detachably connected with the surgical instrument 100. The rotation axis is the central axis of the rotation shaft 243.

The shaft hole 224 is partially opened, and the rotating shaft 243 is partially received in the shaft hole 224. That is, the circumferential extension angle of the shaft hole 224 is less than 360 degrees, for example, the circumferential extension angle of the shaft hole 224 is 180 degrees. The shaft hole 224 is partially opened, so that the operation of installing the rotating shaft 243 into the shaft hole 224 is very convenient, and the size of the separating element 200 can be reduced, so that the structure of the separating element 200 is more compact.

The first end 241 of the snap-in portion 240 is mounted to the first side surface 229 of the mating portion 222. Note that the first side surface 229 refers to a surface on the back side of the insertion part 222, and this surface is not limited to the planar area indicated by the reference numeral 229. The second end 242 of the clip portion 240 protrudes from the second side surface 227 of the plug portion 222. Note that the second side surface 227 is a surface on the front side of the inserting portion 222, and this surface is not limited to the planar area indicated by the reference numeral 227. The plug 222 is provided with an opening 228 extending through the first and second side surfaces 229, 227, and the second end 242 protrudes from the first side surface 229 through the opening 228 and out of the second side surface 227.

Therefore, the opening 228 provides a space for the movement stroke of the second end 242 of the clamping portion 240, that is, the thickness of the insertion portion 222 provides a space for the movement stroke of the second end 242 of the clamping portion 240, which not only has a reliable structure, but also can reduce the size of the separating member 200, and the structural design is very reasonable.

Second end 242 of clip portion 240 resiliently mates with clip interface 60 on surgical instrument 100. In this embodiment, the engaging portion 240 itself has no elasticity, the separating member 200 further includes a supporting portion 250 abutting against the engaging portion 240, and the supporting portion 250 elastically supports the engaging portion 240. The supporting portion 250 is at least partially made of an elastic material, and the supporting portion 250 provides an elastic force to the clamping portion 240. That is to say, the clamping portion 240 only needs to realize the function of being connected with or disconnected from the surgical instrument 100, the supporting portion 250 only needs to realize the function of providing elastic force, and the clamping portion 240 and the supporting portion 250 respectively perform their own functions, so that the process requirements on the clamping portion 240 and the supporting portion 250 can be reduced, and the requirement of mass production can be met.

In order to apply a force to the clamping portion 240 towards the second side surface 227 so that the clamping portion 240 is maintained in the clamping interface 60 without an external force, and thus maintained in the first state of connection with the surgical instrument 100, the supporting portion 250 is disposed at the first side surface 229 of the clamping portion 240 and away from the second side surface 227 relative to the clamping portion 240.

Specifically, the supporting portion 250 has a first portion 251 and a second portion 252 connected to each other, the first portion 251 is connected to the first side surface 229, and the second portion 252 abuts against the clip portion 240, so as to provide an elastic force to the clip portion 240, so that the clip portion 240 tends to be clipped into the clip interface 60.

In order to securely fix support portion 250 to separating member 200, mounting portion 220 is provided with a connecting portion 260, and support portion 250 and mounting portion 220 are welded and fixed at connecting portion 260. One skilled in the art will appreciate that other suitable fastening means may be used depending on the materials of the supporting portion 250 and the mounting portion 220.

As described above, the shaft hole 224 to which the rotating shaft 243 is attached is partially opened, and the support portion 250 covers the opened portion of the shaft hole 224 in order to prevent the rotating shaft 243 from falling off from the opened shaft hole 224. Specifically, the connecting portion 260 and the shaft hole 224 are disposed adjacent to each other, and the connecting portion 260 is far away from the second end 242 of the clamping portion 240 relative to the shaft hole 224. The distal end of the first portion 251 of the supporting portion 250 is fixed to the connecting portion 260, so that the supporting portion 250 extending from the distal end to the proximal end can naturally cover the axial hole 224, and the structure design is reasonable.

It can be seen that the position of one portion of the rotation shaft 243 is defined by the shaft hole 224, and the position of the other portion is defined by the support portion 250. Compared to the case that the supporting portion 250 is overlapped on the totally enclosed shaft hole 224, the size of the separating member 200 can be significantly reduced, so that the structure of the separating member 200 is more compact.

It is emphasized that the present invention is directed in various aspects to reducing the size of the separator 200, and while such reductions in size may not be perceptible to the naked eye (e.g., less than 1mm), are critical to the size of the separator 200 because: both the end effector 18 and the separating element 200 of the surgical instrument 100 need to pass through the puncture device cannula into the patient for operation, and in order to achieve the purpose of minimally invasive surgery, the puncture device cannula has standard dimensions (e.g., 5mm \10mm \12mm \15mm), and the widths of the end effector 18 and the separating element 200 must be smaller than the diameter of the puncture device cannula, so that when designing the end effector 18 and the separating element 200, even if the dimension less than 1mm is reduced, the end effector 18 and the separating element need to be repeatedly considered and the structure needs to be repeatedly optimized by the designer.

As described above, the first end 241 of the clamping portion 240 is mounted on the first side surface 229 of the insertion portion 222, and the first portion 251 of the supporting portion 250 is connected with the first side surface 229. In order to better position the clamping portion 240 and the supporting portion 250, the first side surface 229 of the insertion portion 222 is recessed inward to form a receiving space 226, that is, the insertion portion 222 of the mounting portion 220 is provided with the receiving space 226, and a portion of the clamping portion 240 is received in the receiving space 226. The accommodating space 226 includes an opening 228 penetrating through the plug 222, and a second end 240 of the clip 240 protrudes from the opening 228 to be clipped with the clip interface 60 in the first state. When the separating member 200 is in the first state, part of the engaging portion 240 is received in the receiving space 226. Preferably, when the separating member 200 is in the first state, a part of the supporting portion 250 is also received in the receiving space 226.

Because the accommodating space 226 can accommodate at least part of the clamping portion 240 and even at least part of the supporting portion 250, the clamping portion 240 and the supporting portion 250 are prevented from protruding out of the first side surface 229 of the insertion portion 222, the space of the insertion portion 222 is reasonably utilized, the size of the insertion portion 222 can be reduced, and the structure of the insertion portion 222 can be more regular. The accommodating space 226 accommodates part of the clamping part 240 and can limit the clamping part 240; and the second end 242 of the snap-in portion 240 is located in the opening 228, whereby the second end 242 can change position under the elastic force to exert its function. Preferably, a portion of the supporting portion 250 is received in the receiving space 226, and the supporting portion is prevented from interfering with the inserting channel when the inserting portion is inserted into the inserting channel.

In this embodiment, the insertion portion 222 and the clip portion 240 have no elasticity, and the separating member 200 further includes an elastic body abutting against the clip portion 240, and the elastic body abuts against the clip portion 240 to elastically support the clip portion 240. The elastic body is a support portion 250, the support portion 250 is at least partially made of an elastic material, and the support portion 250 provides an elastic force to the clamping portion 240. It will be understood by those skilled in the art that the clip portion 240 itself may have elasticity, and any solution similar or identical to the embodiment is covered by the protection scope of the present invention.

In this embodiment, there is no other elastic body between the supporting portion 250 and the clamping portion 240, and the supporting portion 250 only provides elastic force for the clamping portion 240, that is, the elastic body which abuts against the clamping portion 240 and elastically supports the clamping portion 240 only includes the supporting portion 250. As will be appreciated by those skilled in the art, on the basis of the support portion 250, another elastic body, such as a second elastic body, is disposed between the support portion 250 and the clamping portion 240, and the second elastic body and the support portion 250 together provide elastic force for the clamping portion 240. Alternatively, the supporting portion 250 is not provided, and other elastic bodies may provide elasticity for the clamping portion 240, and any scheme similar to or the same as the embodiment is covered in the protection scope of the present invention.

Second end 242 of clip portion 240 includes a clip surface 244, and a ramp 246 disposed at an angle to clip surface 244. As shown in fig. 3, the latch surface 244 extends vertically, and as shown in fig. 2, 3, and 6, the latch surface 244 abuts a sidewall of the latch interface 60 to prevent the separator 200 from falling out of the surgical instrument 100. As shown in fig. 3, the ramp 246 extends obliquely upward from the proximal end toward the distal end, where upward refers to the direction toward the opening of the card interface 60. Under the guidance of the inclined surface 246, the second end 242 changes its position during the insertion into the insertion channel 50 due to the rotation of the clamping portion 240, so that the insertion portion 222 and the clamping portion 240 of the separating member 200 can be inserted into the insertion channel 50 more smoothly from the distal end to the proximal end.

Second end 242 of clip portion 240 also includes a top surface 248 disposed between clip surface 244 and ramp 246. The top surface 248 has a width that makes the configuration of the second end 242 more reliable. The top surface 248 may be a flat surface or may be a sloped surface 246. If the top surface 248 is beveled, it is preferred that the angle of inclination of the top surface 248 be less than the angle of inclination of the beveled surface 246.

It should be noted that, in the present embodiment, the clip portion 240 is integrally formed, and those skilled in the art can understand that, the portions of the clip portion 240 can be separately formed and connected by a specific connection manner, and all the embodiments that are the same as or similar to the present embodiment are covered in the protection scope of the present invention.

As previously described, the mounting portion 220 of the separate piece 200 includes the insertion portion 222 to which the engaging portion 240 is mounted. Referring to fig. 4 to 6, the insertion portion 222 extends lengthwise, and correspondingly, the insertion channel 50 extends from the distal end surface of the surgical instrument 100 in the proximal direction, and specifically, the insertion channel 50 extends from the distal end surface of the nail seat 30 in the proximal direction.

As is well known to those skilled in the art, the staple holder 30 is provided with a lengthwise extending channel 33, the channel 33 receives a portion of the cutting member of the surgical instrument 100 and guides the movement of the cutting member, and the channel 33 is disposed at the center of the staple holder 30 and extends lengthwise. The inserting channel 50, the clamping interface 60 and the chute 33 are communicated and coaxially arranged, and the structure is regular.

The card interface 60 communicates with the proximal end of the plug channel 50 and extends through the sidewall of the plug channel 50. Specifically, the clip interface 60 penetrates through the sidewall of the nail abutting surface 31 of the nail abutting seat 30.

Thus, when the separating element 200 is to be mounted to the surgical instrument 100, the insertion portion 222 of the separating element 200 is aligned with the insertion channel 50, the separating element 200 is pushed in a distal direction toward a proximal direction, during the pushing, the insertion channel 50 abuts against the inclined surface 246 of the second end 242 of the clamping portion 240, the clamping portion 240 is rotated against the elastic force provided by the supporting portion 250 until the second end 242 of the clamping portion 240 and the insertion portion 222 are smoothly inserted into the insertion channel 50, the separating element 200 is pushed continuously until the second end 242 of the clamping portion 240 is aligned with the clamping interface 60, the second end 242 of the clamping portion 240 rotates reversely under the elastic force provided by the supporting portion 250, the second end 242 protrudes from the second side surface 227 of the insertion portion 222 and is clamped into the clamping interface 60, and the separating element 200 is mounted in place.

The sidewall of the plug channel 50, specifically, the sidewall of the plug channel 50 located on the nail abutting surface 31 of the nail abutting seat 30 includes a first hollow portion 51 and a second hollow portion 52 communicated with the clamping opening 60, the second hollow portion 52 is located at a far end relative to the first hollow portion 51, the width of the second hollow portion 52 is greater than that of the first hollow portion 51, and the width of the clamping opening 60 is greater than that of the first hollow portion 51.

In the process of inserting the separating element 200, the wider second hollow part 52 can make the inserting operation of the separating element 200 easier, and in the process of moving the separating element 200 in the second hollow part 52, the clamping part 240 does not need to overcome the elasticity of the supporting part 250 to rotate, the supporting part 250 does not need to deform, so that the service life of the separating element 200 can be prolonged, and the resistance increase caused by the contact of the clamping part 240 and the second hollow part can be avoided; when the inclined surface 246 of the second end 242 of the separating member 200 contacts the first hollow portion 51, the second end 242 of the engaging portion 240 will rotate and move inside the first hollow portion 51 while overcoming the elasticity of the supporting portion 250, when the separating member 200 moves to the position where the second end 242 of the engaging portion 240 is aligned with the engaging interface 60, since the width of the engaging interface 60 is greater than the width of the first hollow portion 51, the engaging surface 244 of the engaging portion 240 can abut against the side wall of the engaging interface 60 adjacent to the first hollow portion 51, and the second end 242 of the engaging portion 240 reversely rotates under the elasticity of the supporting portion 250 to protrude from the second side surface 227, so that the second end 242 can be smoothly inserted into the engaging interface 60, and the separating member 200 is installed in place.

It can be seen that the reasonable design of the first hollow part 51 and the second hollow part 52 not only can prolong the service life of the separating element 200, but also can make the installation operation of the separating element 200 easy and convenient.

The length of the second hollow 52 is greater than the length of the first hollow 51. That is to say, the clamping portion 240 does not need to overcome the elasticity of the supporting portion 250 to rotate in the movement process of the longer second hollow portion 52, the supporting portion 250 does not deform, and the service life of the separating member 200 is prolonged.

The width of the first cutout 51 is equal to the width of the gate 33. The clearance 33, the clamping opening 60, the first hollow part 51 and the second hollow part 52 are coaxially arranged, so that the separating piece 200 can be ensured to be properly arranged and not to deviate from the central axis after being installed, and a doctor can conveniently operate the separating piece.

The second cutout 52, the first cutout 51, the clip interface 60, and even the clearance 33 form a passage groove in which the sidewall of the plug passage 50 extends from the distal end toward the proximal end.

The distal end of the nail abutting seat 30 is provided with a first wedge-shaped part 39, the first wedge-shaped part 39 is provided with a first inclined surface 38, the proximal end of the working part 230 is provided with a second wedge-shaped part 239, the second wedge-shaped part 239 is provided with a second inclined surface 238, and after the separating piece 200 is installed on the nail abutting seat 30, the first inclined surface 38 abuts against the second inclined surface 238.

The first inclined surface 38 abuts against the second inclined surface 238, so that the first wedge portion 39 and the second wedge portion 239 overlap, and the separator 200 can be more reliably mounted on the nail abutting seat 30. At the same time, the first wedge 39 may make the distal end of the anvil 30 thinner than the rest, and the second wedge 239 may make the proximal end of the working portion thinner than the rest. That is, even if first wedge 39 and second wedge 239 overlap, the size of the joint is not significantly increased. On one hand, the installation is reliable due to the overlapping, on the other hand, the size cannot be obviously increased due to the overlapping, and the design is quite reasonable.

The second hollow 52 is disposed on the first inclined surface 38. The mounting portion 220 extends in a proximal direction from the second ramp 238 for compact and reasonable design.

The combined thickness of first wedge 39 and second wedge 239 is comparable to the thickness of anvil receptacle 30 proximate the proximal end of first ramp 38 and/or comparable to the thickness of a separator proximate the distal end of second ramp 238.

The thicknesses are equal, namely, the thicknesses are approximately equal, so that a step is avoided at the junction of the separating piece 200 and the nail abutting seat 30, and tissues are prevented from being scratched.

As previously described, separator 200 includes a mounting portion 220 and a working portion 230, the working portion 230 being used to dissect tissue.

The working portion 230 includes a proximal end 231 and a distal end 232, and the width of the working portion 230 gradually decreases in a direction from the proximal end 231 toward the distal end 232. When the working part 230 peels off the tissue, the narrow far end 232 contacts the tissue preferentially, and the narrow far end 232 can be inserted into the tissue conveniently and peels off the target tissue from other tissues, so that the operation is more convenient.

At least a portion of the working portion 230 extends arcuately from the proximal end 231 toward the distal end 232, the working portion 230 having an arcuately extending and concave working surface 234. The arcuately extending working surface 234 may facilitate passage of the working portion 230 through a gap between the target tissue and other tissue during dissection of tissue, better guide the end effector 18 through the gap between the target tissue and other tissue, and facilitate manipulation of the separator 200 and the surgical instrument 100.

The working portion 230 extends in an arc, the working surface 234 extends in an arc, and the back surface of the workpiece also extends in an arc. The working part 230 has regular structure and beautiful appearance.

The outer contour lines of the working part 230 and the mounting part 220 of the separating piece 200 have no obvious edges and corners, and all the contour lines are processed by round corners, so that the edges and corners can be prevented from cutting tissues.

As previously described, the separator 200 is mounted to the distal end of the surgical instrument 100. Surgical instrument 100 has a mounting end for mounting separator 200, separator 200 further comprising a resilient member 280, resilient member 280 abutting an end surface of the mounting end. Specifically, the elastic member 280 abuts against the distal end surface of the nail abutting seat 30.

Because the distal end terminal surface of installation end is hard, and elastic component 280 is soft deformable, when the distal end terminal surface butt of elastic component 280 and installation end, not only can avoid the distal end terminal surface scratch tissue of installation end, can also reduce the risk that the tissue is pressed from both sides in the clearance between the distal end terminal surface of installation end and separator 200, avoid causing unnecessary the dragging to the tissue to avoid damaging the tissue.

The outer surface of the elastic member 280 protrudes from or is flush with the outer surface of the mounting end. Specifically, the nail seat has a nail abutting surface 31 and a back surface 32, and in the present embodiment, preferably, the outer surface of the elastic member 280 is flush with the back surface 32 of the nail abutting seat 30 or protrudes from the back surface 32. When the target tissue is stripped from other tissues, because the mounting end on the back surface 32 side of the nail abutting seat 30 easily scratches other tissues, and the outer surface of the elastic piece 280 is flush with the back surface 32 of the nail bin or protrudes out of the back surface 32, the tissue can be prevented from being scratched by the distal end surface of the mounting end to the maximum extent, and the risk that the tissue is clamped in the gap between the distal end surface of the mounting end and the separating piece 200 can be reduced to the maximum extent.

The separating member 200 is provided with a slot 290. The mounting end has a first outer surface 91, the separating member 200 has a second outer surface 202, the slot 290 is located adjacent the first outer surface 91 and the second outer surface 202 when the separating member 200 is in the first state, and the resilient member 280 is disposed in the slot 290. The slot 290 allows for better installation of the resilient member 280 without affecting the function of the resilient member 280.

The outer surface of the elastic member 280 protrudes from the second outer surface 202 or is flush with the second outer surface 202. The slot 290 may better fit the resilient member 280, but the proximal and/or distal ends of the slot 290 may risk scratching tissue, and by having the outer surface of the resilient member 280 protruding from the second outer surface 202 or flush with the second outer surface 202, not only may the fit of the resilient member 280 be facilitated, but tissue may also be prevented from being scratched.

The shape of the elastic member 280 matches the shape of the slot 290, so as to prevent scratching of the tissue to the maximum extent. The interference fit of the resilient member 280 with the slot 290 not only provides a secure mounting of the resilient member 280, but also facilitates the resilient member 280 protruding from the surface adjacent thereto, minimizing scratching of tissue.

The slot 290 extends circumferentially. The installation of the elastic member 280 can be more reliable.

The uneven bottom surface of the slot 290, particularly, the bottom surface of the slot including the depressions and/or the protrusions, may increase the friction force between the slot 290 and the elastic member 280, so that the elastic member 280 is securely mounted in the slot 290.

The bottom surface of the slot 290 is shaped to be symmetrically disposed with respect to the central symmetrical plane in the longitudinal direction of the separating member 200. The structure is regular, so that the elastic part 280 is stressed uniformly, and the function of preventing the tissues from being scratched is better exerted.

In this embodiment, the elastic member 280 is a separately molded member, and the elastic member 280 is installed in the slot 290 by manual installation. It will be appreciated by those skilled in the art that the elastic member 280 can be formed by injection molding in the slot 290, and any method similar or identical to the embodiment is within the scope of the present invention.

Referring to fig. 7 to 13, the present embodiment further provides a packing box 300 with a separating element 200, wherein the separating element 200 can be accommodated in the packing box 300. Package 300 provides an outer packaging for separator 200, facilitating transport and storage of separator 200. The separator 200 and the package 300 form an assembly that can be sold and purchased separately or in combination with the surgical instrument 100 to form a surgical kit that can be sold and purchased at the same time, whichever is more than desirable for the surgeon to exfoliate the target tissue. Of course, the separating member 200 of the present embodiment can be sold and purchased separately.

Package 300 includes receiving portion 320 for receiving separator 200, and separator 200 may be received in package 300 by inserting into receiving portion 320. Package 300 includes a housing 350, a side surface of housing 350 being recessed inwardly to form an open receiving portion 320, receiving portion 320 having an open end to facilitate loading and unloading of separator 200 into and from package 300 from the open end.

Receiving portion 320 has a closed end 330 spaced from the open end, the shape of closed end 330 may match the shape of distal end 232 of separating element 200, or the shape of closed end 330 may also match the shape of distal end 232 of separating element 200, so long as closed end 330 limits insertion of separating element 200. Thus, during insertion of the separator 200 into the receptacle 320, the operator may sense that the separator 200 is received in place when the distal end 232 of the separator 200 abuts the closed end 330 of the receptacle 320.

The receiving portion 320 is provided with a rib 324, the rib 324 is provided with a guiding surface 326, and the separating element 200 slides into the receiving portion 320 along the guiding surface 326. The guide surface 326 may allow the separator 200 to be more easily and accurately inserted into the receiving portion 320.

The rib 324 further has an abutting surface 328, and the abutting surface 328 intersects the guiding surface 326 and is disposed at an angle, specifically, at an obtuse angle. The contact surface 328 is close to the closed end 330 of the receiving portion 320 relative to the guide surface 326, and the contact surface 328 limits the separator 200. Specifically, when the separator 200 is placed in the receiving portion 320, the contact surface 328 contacts a part of the working surface 234 of the separator 200, so that the separator 200 is more reliably received in the receiving portion 320.

Therefore, the convex ribs 324 can limit the size of the accommodating part 320 and guide the operation of sliding the separating piece 200 into the accommodating part 320, and after the separating piece 200 slides into the accommodating part 320, the convex ribs 324 can limit the separating piece 200, so that the structural design is quite reasonable.

Referring to fig. 11, a protrusion 322 is disposed on a surface of the receiving portion 320. The protrusion 322 supports the working portion 230 of the separating member 200 and reduces the contact area between the working portion 230 and the receiving portion 320, thereby facilitating the insertion and removal of the separating member 200. In this embodiment, the protrusion 322 extends lengthwise and is substantially in the shape of a bar, and the protrusion 322 extends along the longitudinal direction. Other shapes of the projection 322 are also contemplated by those skilled in the art.

As previously described, the separator 200 includes a resilient member 280 that abuts an end face of the mounting end of the surgical instrument 100. Preferably, the outer surface of the elastic member 280 protrudes from the outer surface of the operating part 230 of the separator 200, so that the elastic member 280 elastically abuts against the inner surface of the receiving part 320.

During insertion of separator 200 into receiving portion 320 of package 300, when resilient member 280 resiliently abuts the inner surface of receiving portion 320, the operator may sense the dampening effect, which provides operator feedback to confirm whether separator 200 is received in place. That is, in addition to the aforementioned closed end 330 enabling the operator to sense that the separating element 200 is inserted in place, the elastic member 280 elastically abuts against the inner surface of the receiving portion 320 to further provide feedback to the operator, and further enhance the operating experience. Furthermore, the friction force between the elastic member 280 and the inner surface of the receiving portion 320 can prevent the separating member 200 from falling off from the receiving portion 320.

As previously described, the separating member 200 is detachably connected to the surgical instrument 100 by the engagement mechanism, and the separating member 200 is switched between a first state in which the separating member 200 is connected to the surgical instrument 100 and a second state; in the second state, the separator 200 is disengaged from the surgical instrument 100.

In the present embodiment, it is preferable that package case 300 not only can accommodate separator 200, but also can switch separator 200 between the first state and the second state. That is, package 300 not only provides packaging for separating element 200, but also provides a means for attaching and detaching separating element 200 to surgical instrument 100, which is a delicate design.

Specifically, the packing box 300 includes an operating member 340, and the operating member 340 acts on the engaging mechanism to switch the separating member 200 from the first state to the second state. More specifically, the operation portion 342 acts on the click mechanism to switch the separator 200 from the first state to the second state.

The operating member 340 includes an operating portion 342 and a driving portion 348 connected to each other, the operating portion 342 is pressed by an operator, and the driving portion 348 acts on the latch mechanism to switch the separator 200 from the first state to the second state.

The operating portion 342 performs a first motion to drive the driving portion 348 to perform a second motion to switch the separating member 200 from the first state to the second state. Wherein the first motion comprises rotation; the second motion comprises rotation.

Package 300 includes a housing 350, housing 350 partially recessed inwardly to form receptacle 320, housing 350 including a first sidewall 351 and a second sidewall 352 circumscribing receptacle 320, first sidewall 351 and second sidewall 352 having a gap 353 therebetween, first sidewall 351 forming operative portion 342. The gap 353 extends lengthwise from one end of the housing 350 in a direction toward the other end, and the extension length of the gap 353 is smaller than that of the housing 350. Due to the gap 353, the first sidewall 351 can move relative to the second sidewall 352, so as to drive the driving portion 348 to move and finally act on the separating element 200 to switch the separating element 200 from the first state to the second state. Moreover, the first side wall 351 is a part of the housing 350, and a part of the housing 350 forms the operation part 342, so that other parts do not need to be additionally arranged to form the operation part 342, and the structure is simple and the design is reasonable.

The operation portion 342 rotates to rotate the driving portion 348. Specifically, the first side wall 351 includes a connection end 344 and a free end 346, the driving portion 348 is connected to the free end 346, and the free end 346 rotates around the joint of the connection end 344 and the second side wall to rotate the driving portion 348. No extra parts are needed, the structure is simple, and the operation is convenient.

The axis of rotation of free end 346 is perpendicular to the central plane of symmetry of the longitudinal direction of compact 300. The rotational axis of the free end 346 is also parallel to the rotational axis of the snap-in portion 240. The assembly structure of the separating member 200 and the packing box 300 can be made neat.

The attachment end 344 of the operating portion 342 is made of an elastic material. Alternatively, the operating portion 342 is entirely made of an elastic material. Thus, when the free end 346 is depressed, the attachment end 344 deforms to cause the free end 346 to rotate about the junction of the attachment end 344 and the second side wall. Thus, the doctor can switch the separating element 200 from the first state to the second state by moving the driving portion 348 against the elastic force of the operating portion 342. The structure of package 300 can be made simpler by the elasticity of operation portion 342 itself. The elasticity of the operating portion 342 itself allows the free end 346 to be held in a tilted state without being subjected to an external force, as shown in fig. 8, 11, and 12.

The operation portion 342 and the driving portion 348 both extend vertically, and the extending directions of the operation portion 342 and the driving portion 348 are perpendicular to each other. The longitudinally extending operating portion 342 and the driving portion 348, which extend in perpendicular directions, provide sufficient travel for the driving portion 348 to effectively drive the engaging portion 240, so that the separating member 200 can be smoothly detached from the surgical instrument 100.

The operation portion 342 and the driving portion 348 are connected to each other, and they are engaged with each other to complete the abutment of the engaging portion 240. The operating portion 342 and the driving portion 348 are two separate components, and specifically, the driving portion 348 is a pin that is tightly fitted into a hole of the operating portion 342 to connect the driving portion 348 and the operating portion 342. It will be appreciated by those skilled in the art that the operating portion 342 and the driving portion 348 may be integrally formed.

As shown in fig. 11 and 12, the housing 350 is provided with an opening 354 through which the driving portion 348 can pass. The opening 354 is opposite to the driving portion 348, so that when the driving portion 348 is installed, the driving portion 348 passes through the opening 354 and then is connected with the operating portion 342, and the opening 354 facilitates the installation tool to extend to apply force to the driving portion 348, and the structure design is reasonable. The driving portion 348 is connected to the free end 346 of the operating portion 342, and the opening 354 is opposite to the free end 346 of the operating portion 342.

The width of the driving portion 348 is smaller than the width of the channel groove (including the second hollow portion 52, the first hollow portion 51, and the clip interface 60, which are connected in sequence) of the nail abutting seat 30. During disengagement of the separating member 200 from the surgical instrument 100, the drive portion 348 is movable within the channel and remains depressed against the second end 242 of the catch 240.

Thus, the operating member 340 acts on the latch mechanism to switch the separating member 200 from the first state to the second state.

The distal end of the receiving portion 320 is closed to form a closed end 330, when the separating element 200 is mounted on the surgical instrument 100, the packing case 300 containing the separating element 200 carries the separating element 200 to move toward the surgical instrument 100, the closed end 330 pushes the separating element 200 to insert into the surgical instrument 100, and therefore the closed end 330 of the receiving portion 320 of the packing case 300 pushes the separating element 200 to switch from the second state to the first state.

The packing box 300 is made of a transparent material, which is not only beautiful, but also the transparent packing box 300 is very convenient for an operator to observe whether the disassembling and assembling operation is in place when the separating member 200 is disassembled and assembled by using the packing box 300.

An application scenario of the separator 200 of the present embodiment is described below.

After shipment of separator 200 and before use, separator 200 is placed in receiving portion 320 of package box 300, elastic member 280 of separator 200 elastically abuts against the inner surface of receiving portion 320, and separator 200 is held in package box 300 by the elastic force of elastic member 280.

When a surgeon desires to use separator 200 to strip tissue during use of surgical instrument 100, the surgeon holds housing 350 of package 300 such that mounting portion 220 of separator 200 is aligned with insertion channel 50 provided in anvil 30 of end effector 18 of surgical instrument 100 and pushes package 300 in a direction toward surgical instrument 100, during which insertion portion 222 and clip portion 240 of separator 200 move along insertion channel 50 until second end 242 of clip portion 240 is aligned with clip interface 60 and clips into clip interface 60, at which time separator 200 has been mounted to surgical instrument 100.

Subsequently, the surgeon pulls cartridge 300 in a direction away from surgical instrument 100, against the frictional force between resilient member 280 and the inside surface of receiving portion 320, thereby disengaging cartridge 300 from separator 200, and the surgeon can use separator 200 to peel the target tissue. Specifically, the narrower width distal end 232 of working portion 230 of separator 200 is aligned with the interface of the target tissue and the other tissue, and surgical instrument 100 and separator 200 are pushed forward until separator 200 strips the target tissue away from the other tissue.

After the separator 200 strips the target tissue from the other tissue, the surgeon advances the surgical instrument 100 in a direction toward the distal end 232, such that the target tissue enters between the anvil 30 and the cartridge deck, and the surgeon may then use the surgical instrument 100 to cut and staple the target tissue.

The surgeon may remove separating member 200 from surgical instrument 100 when it is no longer necessary to dissect tissue during use of surgical instrument 100, thereby avoiding the need for separating member 200 to occupy space and interfere with other operations of surgical instrument 100 without the need for separating member 200. Specifically, the doctor moves packing box 300 in alignment with separator 200 to receive separator 200 in receiving portion 320 of packing box 300, then, the doctor presses the free end 346 of the operation portion 342, the free end 346 rotates around the connection end 344 to drive the driving portion 348 to rotate until the driving portion 348 abuts against the inclined surface 246 or the top surface 248 of the second end 242 of the clamping portion 240, the free end 346 of the operation portion 342 is continuously pressed, the driving portion 348 drives the second end 242 of the clamping portion 240 to rotate against the action force of the supporting portion 250 until the second end 242 of the clamping portion 240 is separated from the clamping interface 60, then, the doctor pulls the packing box 300 in a direction away from the surgical instrument 100, the packing box 300 drives the insertion portion 222 of the separating element 200 to be separated from the insertion channel 50, so that the separating element 200 is separated from the surgical instrument 100, the separator 200 detached from the surgical instrument 100 is placed in the receiving portion 320 of the package 300, and returned to a state before being shipped. It should be noted that after the driving portion 348 disengages the second end 242 of the clamping portion 240 from the clamping interface, the driving portion 348 keeps pressing the second end 242 of the clamping portion 240, that is, in the process of disengaging the separating element 200 from the surgical instrument 100, the driving portion 348 always presses the second end 242 of the clamping portion 240 and applies force to the second end 242, and the driving portion 348 moves in the channel slot, so that the packing box 300 finally drives the separating element 200 to disengage from the surgical instrument 100.

Fig. 16-17 illustrate a separator 200a provided in accordance with a second embodiment of the invention for use with a surgical instrument.

The following focuses on the differences of the separator 200a of the present embodiment from the separator of the first embodiment.

In a first embodiment, the elastic member extends circumferentially in a ring shape, and the ring-shaped elastic member is mounted in the slot between the separating member and the distal end surface of the nail abutment.

In this embodiment, the elastic member 280a is formed in a bag shape, and at least a portion of the operation portion 230a is embedded in the elastic member 280a, and at least a portion of the operation portion 230a has the same shape as the elastic member 280 a. Specifically, the working portion 230a is encased in the resilient member 280a from the distal end to the portion adjacent to the mounting end of the surgical instrument. The end surface of the proximal opening of the elastic member 280a abuts against the distal end surface of the mounting end, thereby preventing the distal end surface of the mounting end from scratching tissues.

FIG. 18 illustrates a separator member provided in accordance with a third embodiment of the invention for use with a surgical instrument.

The following focuses on the differences of the separator 200b of the present embodiment from the separator of the first embodiment.

In the first embodiment, the first end of the clamping portion includes a rotating shaft, the rotating shaft is integrally formed with other portions of the clamping portion, the insertion portion is provided with an open shaft hole, the rotating shaft portion is accommodated in the shaft hole, and the supporting portion covers the open portion of the shaft hole, so that the second end of the clamping portion can rotate around the rotating shaft.

In this embodiment, the separating member 200b includes an independent rotating shaft 234b, and a first end of the clamping portion 240b is provided with a pin hole 299b through which the rotating shaft 234b can pass; round holes 298b corresponding to two ends of the pin hole 299b are formed in the mounting portion of the separating member 200b, and the rotating shaft 234b sequentially passes through the first round hole 298b, the pin hole 299b and the second round hole 298b, so that the first end of the clamping portion 240b is rotatably mounted on the mounting portion. The shaft 234b is tightly fitted with the first circular hole 298b and/or the second circular hole 298b to prevent the shaft from falling off.

In this embodiment, the shape of the elastic member 280b of the separator 200b and the mechanism for engaging the elastic member 280b with the operating portion 230b are the same as those of the second embodiment, and thus, description thereof is omitted.

Figures 19-20 illustrate a separator provided in accordance with a fourth embodiment of the invention for use with a surgical instrument.

The following focuses on the differences between the separator 200c of the present embodiment and the separator of the third embodiment.

In a third embodiment, the mounting portion of the separating member is provided with a connecting portion at a distal side adjacent to the first end of the clamping portion, the first portion of the supporting portion is connected with the connecting portion, the supporting portion extends from the connecting portion toward the proximal end, and the second portion of the supporting portion, which is located at the proximal end relatively, applies force to the clamping portion, so that the clamping portion has a tendency to be clamped into a clamping interface of a surgical instrument.

In this embodiment, the supporting portion 250c is disposed near the proximal end of the engaging portion 240c, the proximal end of the supporting portion 250c is connected to the mounting portion 220c by welding, etc., the supporting portion 250c has elasticity, and the distal end of the supporting portion 250c applies force to the second end of the engaging portion 240c, so that the engaging portion 240c tends to be engaged with the engaging opening 60c of the surgical instrument.

Fig. 21-22 illustrate a separator provided in accordance with a fifth embodiment of the invention for use with a surgical instrument.

The following focuses on the differences between the separator 200d of the present embodiment and the separator of the second embodiment.

In the second embodiment, the clip portion itself has no elasticity, and the support portion provides elasticity to the clip portion so that the clip portion has a tendency to be clipped into the clip interface of the surgical instrument.

In this embodiment, the snap-in portion 240d itself is at least partially made of an elastic material, and the snap-in portion 240d itself has a tendency to snap into a snap-in interface of the surgical instrument. That is, no additional elastic body is provided to provide elastic force to the clamping portion 240d, so that the structure is simpler.

In this embodiment, the proximal end of the clamping portion 240d is connected to the mounting portion 220d of the separating member 200d, the clamping portion 240d deforms, and the distal end of the clamping portion 240d rotates around the proximal end, so that the clamping portion 240d is clamped into or separated from the clamping interface, and finally the separating member 200d is switched between the first state and the second state. It should be noted that no additional rotation shaft is provided at the proximal end, and the distal end rotates around the joint between the proximal end and the mounting portion 220 d.

It can be seen that the separator 200d of the present embodiment is simpler in structure and lower in cost.

Fig. 23-26 illustrate a separator provided in accordance with a sixth embodiment of the invention for use with a surgical instrument.

The following description focuses on differences of the separator 200e of the present embodiment from the separator of the fifth embodiment.

In the fifth embodiment, a click portion is provided on the front surface (second side surface) of the mounting portion of the separate piece, the click portion being engaged with a click interface provided to the surgical instrument.

In this embodiment, the clip portion 240e is disposed on the back surface of the mounting portion 220e of the separating member 200e, the clip interface 60e is disposed on the back surface 32e of the nail abutment seat 30e, and the clip portion 240e disposed on the back surface of the mounting portion 220e is engaged with the clip interface 60e disposed on the back surface 32e of the nail abutment seat 30e, thereby achieving detachable connection of the separating member 200e and the surgical instrument.

Since the clip interface 60e is disposed on the back surface 32e of the nail abutting seat 30e and is not affected by the magazine seat, the operation member of the packing box can operate on the back surface 32e of the nail abutting seat 30e to mount and dismount the separating member 200 e. The operation space is larger, and the operation is more convenient.

The far end of the clamping portion 240e is connected with the separating piece 200e in a welding mode and the like, and the clamping portion 240e has elasticity, so that switching between the first state and the second state is achieved, and repeated description is omitted.

Fig. 27-29 illustrate a separator provided in accordance with a seventh embodiment of the invention for use with a surgical instrument.

The following description focuses on differences of the separator 200f of the present embodiment from the separator of the fifth embodiment.

In a fifth embodiment, the proximal end of the clamping portion is secured to the mounting portion of the separating member and the distal end of the clamping portion is mated with the clamping interface of the surgical instrument.

In this embodiment, the distal end of the clip portion 240f is fixed to the separating member 200f except for the clip portion 240f, and the proximal end of the clip portion 240f is coupled to the clip interface of the surgical instrument.

In this embodiment, the separating member 200f is provided with a receiving cavity 297f, the receiving cavity 297f extends from the proximal end of the mounting portion in a direction toward the operating portion, the receiving cavity 297f is partially located in the operating portion, the distal end of the receiving cavity 297f is provided with a vertically extending mounting shaft 296f, and the engaging portion 240f is provided with a mounting hole capable of being fitted over the mounting shaft 296 f. The mounting hole cooperates with the mounting shaft 296f to achieve the coupling of the distal end of the clamping portion 240f and the separating member 200 f. The proximal end of the latch portion 240f can rotate relative to the distal end to engage and disengage the latch interface.

In this embodiment, although the mounting shaft 296f is a cylindrical shaft and the mounting hole is a circular hole, the engagement portion 240f does not rotate around the axis of the mounting shaft 296f, and the rotation axis of the engagement portion 240f is parallel to the operating surface of the separating member 200f, as in the previous embodiment.

In summary, in the present invention, the surgeon first peels the target tissue from other tissue using the separating member, and then moves the surgical instrument forward to allow the target tissue to enter between the staple cartridge seat and the staple abutting seat, and operates the surgical instrument to cut and staple the target tissue. The separating piece is used for stripping the target tissue, so that the operation of a doctor is easier and more convenient; and the clamping mechanism enables the separating piece to be elastically matched and connected with the surgical instrument, so that the connection is reliable and the disassembly and the assembly are convenient.

According to the invention, the elastic body is abutted against the end face of the mounting end, so that the tissue can be prevented from being scratched by the distal end face of the mounting end to the maximum extent, and the risk that the tissue is clamped in the gap between the distal end face of the mounting end and the separating piece is reduced to the maximum extent.

According to the invention, the packaging box not only can provide packaging for the separating piece, but also can be used as a tool for disassembling and assembling the separating piece relative to a surgical instrument, and the design is ingenious. According to the invention, the elastic body can not only avoid scratching tissues, but also prevent the separating piece from falling off accidentally when the separating piece is accommodated in the packaging box.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. A separator for a surgical instrument, wherein: the separator is including installation department and the work portion that links to each other, the installation department with surgical instruments passes through mating mechanism detachably and installs, the work portion is used for peeling off the tissue, mating mechanism includes clamping mechanism, clamping mechanism makes the separator with surgical instruments elasticity connects or breaks away from, so that the installation department with surgical instruments detachably installs.

2. A separator as claimed in claim 1, wherein: the clamping mechanism comprises a clamping part arranged on the separating piece and a clamping interface arranged on the surgical instrument, and in a first state, the clamping part is clamped into the clamping interface under the action of elastic force to realize elastic matching; in the second state, the clamping part overcomes the elastic force to separate from the clamping interface.

3. A separator as claimed in claim 2, wherein: the clamping portion is provided with a first end and a second end, the first end is connected with the mounting portion, and the second end is elastically connected with or separated from the clamping interface.

4. A separator as claimed in claim 3, wherein: the second end rotates about the first end.

5. A separator as claimed in claim 4, wherein: the first end comprises a rotating shaft, the installation part is provided with a shaft hole, and the rotating shaft is accommodated in the shaft hole.

6. A separator as claimed in claim 5, wherein: the shaft hole is partially opened, and part of the rotating shaft is accommodated in the shaft hole.

7. A separator as claimed in claim 6, wherein: the separating part further comprises a supporting part, the supporting part is provided with a first part and a second part, the first part is connected with the mounting part and covers the shaft hole, and the second part is abutted against the clamping part to support the clamping part in an elastic manner.

8. A separator as claimed in claim 4, wherein: the axis of rotation is perpendicular to the central symmetry plane of the longitudinal direction of the separating element.

9. A separator as claimed in claim 3, wherein: in the first state, the second end protrudes out of the surface of the mounting portion.

10. A separator as claimed in claim 3, wherein: the second end includes joint face, the inclined plane that becomes angle setting with the joint face, the vertical extension of joint face.

11. A separator as claimed in claim 10, wherein: the second end also includes a top surface disposed between the snap surface and the ramped surface.

12. A separator as claimed in claim 2, wherein: the installation department sets up the accommodation space, and part joint portion is acceptd in the accommodation space.

13. A separator as claimed in claim 12, wherein: the accommodation space includes a through opening of the mounting portion in the first state, a second end of the clamping portion protrudes out of the opening.

14. A separator as claimed in claim 12, wherein: the separating piece further comprises an elastic body abutted to the clamping portion, and at least part of the elastic body is contained in the containing space.

15. A separator as claimed in claim 2, wherein: the separating piece further comprises an elastic body abutted to the clamping portion, and the elastic body is elastically supported by the clamping portion in an abutting mode.

16. A separator as claimed in claim 15, wherein: the elastomer is the supporting part, at least a part of supporting part is made by elastic material, the supporting part has first portion and second part, the first portion with the installation department links to each other, the second part with joint portion butt.

17. A separator as claimed in claim 16, wherein: the separating piece further comprises another elastic body arranged between the supporting portion and the clamping portion.

18. A separator as claimed in claim 2, wherein: at least a part of the clamping part is made of elastic material.

19. A separator as claimed in claim 2, wherein: the matching mechanism further comprises an inserting mechanism, the inserting mechanism comprises an inserting portion arranged on the separating piece and an inserting channel arranged on the surgical instrument, and the inserting portion and the clamping portion are inserted into the surgical instrument along the inserting channel.

20. A separator as claimed in claim 19, wherein: the insertion channel extends from a distal end of a surgical instrument in a proximal direction, and the card interface is in communication with the distal end of the insertion channel and extends through a sidewall of the insertion channel.

21. A separator as claimed in claim 20, wherein: the lateral wall is provided with a first hollow part and a second hollow part which are sequentially communicated with the far end of the clamping interface, the width of the second hollow part is larger than that of the first hollow part, and the width of the clamping interface is larger than that of the first hollow part.

22. A separator as claimed in claim 21, wherein: the clamping interface, the first hollow part and the second hollow part are coaxially arranged.

23. A separator as claimed in claim 1, wherein: the surgical instrument is a stapler, and the separator is removably mounted with an end effector of the stapler.

24. A separator as claimed in claim 23, wherein: the separating piece is detachably mounted with the nail abutting seat of the end effector.

25. A separator as claimed in claim 24, wherein: the clamping mechanism comprises a clamping part arranged on the separating piece and a clamping interface arranged on the nail abutting seat; the clamping portion is elastically connected with the clamping interface in a matched mode, and the clamping interface is arranged on the nail abutting surface or the back surface of the nail abutting seat.

26. A separator as claimed in claim 24, wherein: the far end of the nail abutting seat is provided with a first wedge-shaped part, the first wedge-shaped part is provided with a first inclined plane, the near end of the working part is provided with a second wedge-shaped part, and the second wedge-shaped part is provided with a second inclined plane; the separating piece is arranged behind the nail abutting seat, and the first inclined surface is abutted to the second inclined surface.

27. A separator as claimed in claim 26, wherein: the combined thickness of the first and second wedges is substantially equal to the thickness of an anvil proximal to the proximal end of the first ramp and/or substantially equal to the thickness of a separator proximal to the distal end of the second ramp.

28. A separator as claimed in claim 26, wherein: the mounting portion extends from the second ramp in a proximal direction.

29. A separator as claimed in claim 1, wherein: the working portion includes a proximal end and a distal end, and the width of the working portion gradually decreases in a direction from the proximal end toward the distal end.

30. A surgical instrument comprising an end effector, wherein the end effector is fitted with a separator according to any one of claims 1 to 29.