CN118000807A - Surgical instrument - Google Patents

Abstract

A surgical instrument includes a handle assembly, a barrel assembly, an actuator assembly, and a cartridge assembly. The actuator assembly comprises a first jaw and a second jaw, and the first jaw is movably connected with the second jaw. The proximal end of the first jaw or the proximal end of the second jaw has a closure portion for closing a gap between the proximal ends of the first and second jaws. The nail bin assembly is arranged in the mounting cavity and comprises a mounting seat and a driving piece, and a plurality of staples arranged in an array are arranged on the mounting seat. When the first jaw and the second jaw are closed, the staples arranged in the array form have overlapping parts with the closing part in the moving direction of the driving piece, and the overlapping parts are smaller than one row of staples. The length of the non-effective overlapping part is reduced to be smaller than the length of a row of staples, which is beneficial to reducing the whole length of the staple cartridge assembly and can not cause the condition that the tissue is not stitched.

Description

Surgical instrument

Technical Field

The application relates to the technical field of medical instruments, in particular to a surgical instrument.

Background

At present, minimally invasive surgery occupies an important place in surgery, and the anastomat is a surgical instrument commonly used in minimally invasive surgery. The anastomat works in such a manner that a jaw of a distal end effector is clamped at a specific position near a focal site, a tissue is cut by a cutter of the distal end effector, and suturing is performed by a cartridge assembly on the distal end effector while cutting.

The actuator assembly generally includes first and second jaws that are openable and closable, and in actual surgery, some surgical sites are relatively specialized in that the first and second jaws are difficult to reach around tissue to be cut, such as difficult to reach vessels or organ tissue positioned low in the body. At this time, the conventional anastomat cannot meet the requirements, and a doctor often opens a shorter special instrument to meet the clinical use, so that the medical cost and the expense are greatly increased. Therefore, there is an urgent need for a surgical instrument that can be used properly by a physician while being compatible with accessing a smaller space.

Disclosure of Invention

The invention mainly aims to provide a surgical instrument which can meet the normal use of doctors and is compatible with entering a narrower space.

In a first aspect, an embodiment provides a surgical instrument comprising:

A handle assembly;

a barrel assembly, a proximal end of the barrel assembly being connected to the handle assembly, the barrel assembly including a drive mechanism;

The distal end of the gun barrel assembly is connected with the actuator assembly, the actuator assembly comprises a first jaw and a second jaw, the first jaw is movably connected with the second jaw, the first jaw and the second jaw can move relatively to realize closing and opening, and a mounting cavity is formed between the first jaw and the second jaw; the proximal end of the first jaw or the proximal end of the second jaw has a closure portion for closing a gap between the proximal ends of the first and second jaws;

the nail bin assembly is arranged in the mounting cavity and comprises a mounting seat and a driving piece, and a plurality of staples arranged in an array are arranged on the mounting seat; the driving piece is movably arranged on the mounting seat, and can move from the proximal end of the mounting seat to the distal end of the mounting seat so as to fire the suturing nail; when the first jaw and the second jaw are closed, the staples arranged in an array form have an overlapping portion with the closing portion in the moving direction of the driving piece, and the overlapping portion is smaller than one row of staples.

In one embodiment, the first jaw and the second jaw are rotatably connected such that the first jaw and the second jaw are rotatable about a first rotation axis to effect closure and opening; when the first jaw and the second jaw are closed, the distance between the distal end of the closing part and the first rotating shaft in the moving direction of the driving piece is a first length value, the distance between the distal ends of the staples arranged in an array in the moving direction of the driving piece and the distal end of the closing part is a second length value, the ratio of the first length value to the second length value is a, and the value range of a is more than 0 and less than 0.42.

In one embodiment, when the first jaw and the second jaw are closed, a distance between the distal end of the cartridge assembly and the distal ends of the staples arranged in the array in the moving direction of the driving member is a third length value, a distance between the distal ends of the staples arranged in the array in the moving direction of the driving member and the distal end of the closing portion is a second length value, a ratio of the third length value to the second length value is b, and a value range of b is 0< b < 0.25.

In one embodiment, the staple cartridge assembly further comprises a staple pushing member movably arranged on the mounting seat, and the driving member can drive the staple pushing member to move towards the staples when moving from the proximal end to the distal end of the mounting seat so as to fire the staples; the distance between the driving piece and the nail pushing piece in the moving direction of the driving piece is c, and the value range of c is more than or equal to 0 and less than or equal to 0.5mm.

In one embodiment, the guide member is detachably mounted on the first jaw or the second jaw and is used for guiding the first jaw or the second jaw into tissue; the guide piece is arranged on the first jaw or the second jaw, when the first jaw and the second jaw are closed, the distance between the distal end of the guide piece and the distal end of the nail bin assembly in the moving direction of the driving piece is d, and the value range of d is more than or equal to 0 and less than or equal to 1.5mm.

In a second aspect, an embodiment provides a surgical instrument comprising:

A handle assembly;

a barrel assembly, a proximal end of the barrel assembly being connected to the handle assembly, the barrel assembly including a drive mechanism;

An effector assembly, the distal end of the barrel assembly being connected to the effector assembly, the effector assembly comprising a first jaw and a second jaw, the first jaw and the second jaw being rotatably connected such that the first jaw and the second jaw are rotatable about a first axis of rotation to effect closure and opening, a mounting cavity being formed between the first jaw and the second jaw; the proximal end of the first jaw or the proximal end of the second jaw has a closure portion for closing a gap between the proximal ends of the first and second jaws;

The nail bin assembly is arranged in the mounting cavity and comprises a mounting seat and a driving piece, and a plurality of staples arranged in an array are arranged on the mounting seat; the driving piece is movably arranged on the mounting seat, and can move from the proximal end of the mounting seat to the distal end of the mounting seat so as to fire the suturing nail; when the first jaw and the second jaw are closed, the distance between the distal end of the closing part and the first rotating shaft in the moving direction of the driving piece is a first length value, the distance between the distal ends of the staples arranged in an array in the moving direction of the driving piece and the distal end of the closing part is a second length value, the ratio of the first length value to the second length value is a, and the value range of a is more than 0 and less than 0.42.

In one embodiment, when the first jaw and the second jaw are closed, the distance between the distal end of the staple cartridge assembly and the distal ends of the staples arranged in the array in the moving direction of the driving piece is a third length value, the ratio of the third length value to the second length value is b, and the value range of b is 0 < b < 0.25.

In a third aspect, an embodiment provides a surgical instrument comprising:

A handle assembly;

a barrel assembly, a proximal end of the barrel assembly being connected to the handle assembly, the barrel assembly including a drive mechanism;

The distal end of the gun barrel assembly is connected with the actuator assembly, the actuator assembly comprises a first jaw and a second jaw, the first jaw is movably connected with the second jaw, the first jaw and the second jaw can move relatively to realize closing and opening, and a mounting cavity is formed between the first jaw and the second jaw; the proximal end of the first jaw or the proximal end of the second jaw has a closure portion for closing a gap between the proximal ends of the first and second jaws;

The nail bin assembly is arranged in the mounting cavity and comprises a mounting seat and a driving piece, and a plurality of staples arranged in an array are arranged on the mounting seat; the driving piece is movably arranged on the mounting seat, and can move from the proximal end of the mounting seat to the distal end of the mounting seat so as to fire the suturing nail; when the first jaw and the second jaw are closed, the distance between the distal end of the nail bin assembly and the distal ends of the staples arranged in an array in the moving direction of the driving piece is a third length value, the distance between the distal ends of the staples arranged in the array in the moving direction of the driving piece and the distal ends of the closing parts is a second length value, the ratio of the third length value to the second length value is b, and the value range of b is more than 0 and less than 0.25.

In a fourth aspect, an embodiment provides a surgical instrument comprising:

A handle assembly;

a barrel assembly, a proximal end of the barrel assembly being connected to the handle assembly, the barrel assembly including a drive mechanism;

The distal end of the gun barrel assembly is connected with the actuator assembly, the actuator assembly comprises a first jaw and a second jaw, the first jaw is movably connected with the second jaw, the first jaw and the second jaw can move relatively to realize closing and opening, and a mounting cavity is formed between the first jaw and the second jaw;

The nail bin assembly is arranged in the mounting cavity and comprises a mounting seat, a driving piece and a nail pushing piece, and a plurality of staples arranged in an array are arranged on the mounting seat; the driving piece is movably arranged on the mounting seat, and can move from the proximal end of the mounting seat to the distal end of the mounting seat; the driving piece can drive the nail pushing piece to move towards the stitching nails when moving from the proximal end to the distal end of the mounting seat so as to fire the stitching nails; the distance between the driving piece and the nail pushing piece in the moving direction of the driving piece is c, and the value range of c is more than or equal to 0 and less than or equal to 0.5mm.

In a fifth aspect, an embodiment provides a surgical instrument comprising:

A handle assembly;

a barrel assembly, a proximal end of the barrel assembly being connected to the handle assembly, the barrel assembly including a drive mechanism;

The distal end of the gun barrel assembly is connected with the actuator assembly, the actuator assembly comprises a first jaw and a second jaw, the first jaw is movably connected with the second jaw, the first jaw and the second jaw can move relatively to realize closing and opening, and a mounting cavity is formed between the first jaw and the second jaw;

The nail bin assembly is arranged in the mounting cavity and comprises a mounting seat and a driving piece, and a plurality of stitching nails distributed in an array are arranged on the mounting seat; the driving piece is movably arranged on the mounting seat, and can move from the proximal end of the mounting seat to the distal end of the mounting seat so as to fire the suturing nail;

And a guide detachably mounted to the first jaw or the second jaw for guiding the first jaw and the second jaw into tissue; the guide piece is arranged on the first jaw or the second jaw, when the first jaw and the second jaw are closed, the distance between the distal end of the guide piece and the distal end of the nail bin assembly in the moving direction of the driving piece is d, and the value range of d is more than or equal to 0 and less than or equal to 1.5mm.

The surgical instrument according to the above-described embodiments includes a handle assembly, a barrel assembly, an actuator assembly, and a cartridge assembly. The proximal end of the barrel assembly is connected to the handle assembly, and the barrel assembly includes a drive mechanism. The distal end of the gun barrel component is connected with the actuator component, the actuator component comprises a first jaw and a second jaw, the first jaw is movably connected with the second jaw, the first jaw and the second jaw can move relatively to realize closing and opening, and an installation cavity is formed between the first jaw and the second jaw. The proximal end of the first jaw or the proximal end of the second jaw has a closure portion for closing a gap between the proximal ends of the first and second jaws. The nail bin assembly is arranged in the mounting cavity and comprises a mounting seat and a driving piece, and a plurality of staples arranged in an array are arranged on the mounting seat. The driving piece is movably arranged on the mounting seat, and the driving piece can move from the proximal end of the mounting seat to the distal end of the mounting seat so as to fire the stitching nails. When the first jaw and the second jaw are closed, the staples arranged in the array form have overlapping parts with the closing part in the moving direction of the driving piece, and the overlapping parts are smaller than one row of staples. Since staples having overlap with the closure portion cannot be fully inserted into tissue when the surgical instrument is in use, these overlap do not fall into the "effective staple length" in the length value of the cartridge assembly in the length direction. The length of the non-effective overlapping part is reduced to be smaller than the length of a row of stitching nails, so that the whole length of the nail bin assembly is reduced, the length of the actuator assembly is reduced, and the condition that tissues are not stitched is avoided. Thereby being beneficial to providing a surgical instrument which can meet the normal use of doctors and is compatible to enter a narrower space.

The surgical instrument according to the above-described embodiments includes a handle assembly, a barrel assembly, an actuator assembly, and a cartridge assembly. The proximal end of the barrel assembly is connected to the handle assembly, and the barrel assembly includes a drive mechanism. The distal end of the barrel assembly is connected with an actuator assembly, the actuator assembly comprises a first jaw and a second jaw, the first jaw and the second jaw are rotatably connected, so that the first jaw and the second jaw can rotate around a first rotating shaft to realize closing and opening, and a mounting cavity is formed between the first jaw and the second jaw. The proximal end of the first jaw or the proximal end of the second jaw has a closure portion for closing a gap between the proximal ends of the first and second jaws. The nail bin assembly is arranged in the mounting cavity and comprises a mounting seat and a driving piece, and a plurality of staples arranged in an array are arranged on the mounting seat. The driving piece is movably arranged on the mounting seat, and the driving piece can move from the proximal end of the mounting seat to the distal end of the mounting seat so as to fire the stitching nails. When the first jaw and the second jaw are closed, the distance between the distal end of the closed part and the first rotating shaft in the moving direction of the driving piece is a first length value, the distance between the distal ends of the staples arranged in an array and the distal end of the closed part in the moving direction of the driving piece is a second length value, the ratio of the first length value to the second length value is a, and the value range of a is more than 0 and less than 0.42. The length of the actuator assembly from the distal end of the closure portion to the first axis of rotation does not clamp tissue during use of the surgical instrument, and the effective staple length of the staples from the distal ends of the array of staples to the distal end of the closure portion on the cartridge assembly. That is, the first length value is an inactive length value from the standpoint of grasping and stapling tissue, and the second length value is an active length value from the standpoint of grasping and stapling tissue, while the design to reduce the length of the actuator assembly should be made to minimize the active length value and reduce the inactive length value. Therefore, the smaller the value of the ratio a, the more advantageous it is to shorten the length of the actuator assembly. The ratio a is limited in the value range of 0 < a < 0.42, so that the surgical instrument which can meet the normal use of doctors and is compatible with entering a narrower space is beneficial to realization.

The surgical instrument according to the above-described embodiments includes a handle assembly, a barrel assembly, an actuator assembly, and a cartridge assembly. The proximal end of the barrel assembly is connected to the handle assembly, and the barrel assembly includes a drive mechanism. The distal end of the gun barrel component is connected with the actuator component, the actuator component comprises a first jaw and a second jaw, the first jaw is movably connected with the second jaw, the first jaw and the second jaw can move relatively to realize closing and opening, and an installation cavity is formed between the first jaw and the second jaw. The proximal end of the first jaw or the proximal end of the second jaw has a closure portion for closing a gap between the proximal ends of the first and second jaws. The nail bin assembly is arranged in the mounting cavity and comprises a mounting seat and a driving piece, and a plurality of staples arranged in an array are arranged on the mounting seat. The driving piece is movably arranged on the mounting seat, and the driving piece can move from the proximal end of the mounting seat to the distal end of the mounting seat so as to fire the stitching nails. When the first jaw and the second jaw are closed, the distance between the distal end of the nail bin assembly and the distal end of the staples arranged in the array in the moving direction of the driving piece is a third length value, the distance between the distal end of the staples arranged in the array and the distal end of the closing part in the moving direction of the driving piece is a second length value, the ratio of the third length value to the second length value is b, and the value range of b is more than 0 and less than 0.25. In use of the surgical instrument, the distance from the distal end of the cartridge assembly to the distal ends of the array of staples on the cartridge assembly does not fire the staples, while the distance from the distal ends of the array of staples to the distal ends of the closure portions on the cartridge assembly is the effective staple length of the staples. That is, the third length value is an inactive length value from the viewpoint of suturing tissue, and the second length value is an active length value from the viewpoint of suturing tissue, and the active length value and the inactive length value should be reduced as much as possible when designing the reduced actuator assembly length. Therefore, the smaller the value of the ratio b is, the more beneficial to shortening the length of the nail bin assembly, and further beneficial to shortening the length of the actuator assembly. The ratio b is limited in the value range of 0< b < 0.25, so that the surgical instrument which can meet the normal use of doctors and is compatible with entering a narrower space is beneficial to realization.

The surgical instrument according to the above-described embodiments includes a handle assembly, a barrel assembly, an actuator assembly, and a cartridge assembly. The proximal end of the barrel assembly is connected to the handle assembly, and the barrel assembly includes a drive mechanism. The distal end of the gun barrel component is connected with the actuator component, the actuator component comprises a first jaw and a second jaw, the first jaw is movably connected with the second jaw, the first jaw and the second jaw can move relatively to realize closing and opening, and an installation cavity is formed between the first jaw and the second jaw. The nail bin assembly is arranged in the mounting cavity and comprises a mounting seat, a driving piece and a nail pushing piece, and a plurality of stitching nails distributed in an array are arranged on the mounting seat. The driving piece is movably arranged on the mounting seat, and the driving piece can move from the proximal end of the mounting seat to the distal end of the mounting seat. The nail pushing piece is movably arranged on the mounting seat, and the driving piece can drive the nail pushing piece to move towards the stitching nail when moving from the proximal end to the distal end of the mounting seat so as to fire the stitching nail. The distance between the driving piece and the nail pushing piece in the moving direction of the driving piece is c, and the value range of c is more than or equal to 0 and less than or equal to 0.5mm. When the surgical instrument is used, the driving piece moves along the length direction of the nail bin assembly close to the nail pushing piece until the driving piece contacts with the nail pushing piece, and then the nail pushing piece is driven to move towards the staples so as to fire the staples. That is, the distance of movement that the driver does not contact the staple pusher does not result in staple firing, and should be reduced when the length of the actuator assembly is designed to be reduced. Therefore, the smaller the value of c, the more advantageous the length of the cartridge assembly and, in turn, the shorter the length of the actuator assembly. The value of c is limited in the value range of 0-0.5 mm, so that the surgical instrument which can meet the normal use of doctors and is compatible with entering a narrower space is realized.

The surgical instrument according to the above-described embodiments includes a handle assembly, a barrel assembly, an actuator assembly, a cartridge assembly, and a guide. The proximal end of the barrel assembly is connected to the handle assembly, and the barrel assembly includes a drive mechanism. The distal end of the gun barrel component is connected with the actuator component, the actuator component comprises a first jaw and a second jaw, the first jaw is movably connected with the second jaw, the first jaw and the second jaw can move relatively to realize closing and opening, and an installation cavity is formed between the first jaw and the second jaw. The nail bin assembly is arranged in the mounting cavity and comprises a mounting seat and a driving piece, and a plurality of staples arranged in an array are arranged on the mounting seat. The driving piece is movably arranged on the mounting seat, and the driving piece can move from the proximal end of the mounting seat to the distal end of the mounting seat so as to fire the stitching nails. The guide is detachably mounted to the first jaw or the second jaw for guiding the first jaw and the second jaw into tissue. The guide piece is arranged on the first jaw or the second jaw, when the first jaw and the second jaw are closed, the distance between the distal end of the guide piece and the distal end of the nail bin assembly in the moving direction of the driving piece is d, and the value range of d is more than or equal to 0 and less than or equal to 1.5mm. In the use of surgical instruments, it is sometimes necessary to guide the first and second jaws into the tissue by the shape of the guide, but if the length of the guide extending beyond the first and second jaws in the direction of movement of the driver is too long, the first and second jaws may also be affected from an overall length perspective into a smaller space. Therefore, when designing for reducing the overall length of the actuator assembly and guide, the smaller the value of d, the more advantageous it is to reduce the overall length of the actuator assembly and guide. The value of d is limited in the value range of 0-1.5 mm, so that the surgical instrument which can meet the normal use of doctors and is compatible with entering a narrower space is realized.

Drawings

FIG. 1 is a schematic view of a surgical instrument according to one embodiment of the present application;

FIG. 2 is a schematic perspective view of an actuator assembly and cartridge assembly in accordance with one embodiment of the present application;

FIG. 3 is a schematic diagram of a side view of an actuator assembly and a cartridge assembly in accordance with one embodiment of the present application;

FIG. 4 is a schematic cross-sectional view of an actuator assembly and cartridge assembly in accordance with one embodiment of the present application;

FIG. 5 is a schematic perspective view of a cartridge assembly according to one embodiment of the present application;

FIG. 6 is a schematic top view of a cartridge assembly according to one embodiment of the present application;

FIG. 7 is a schematic cross-sectional view of a cartridge assembly in accordance with one embodiment of the application;

FIG. 8 is a schematic perspective view of an actuator assembly, cartridge assembly and guide according to one embodiment of the present application;

FIG. 9 is a schematic diagram of a side view of an actuator assembly, cartridge assembly and guide in one embodiment of the present application;

Reference numerals: 100. a handle assembly; 200. a barrel assembly; 300. an actuator assembly; 310. a first jaw; 320. a second jaw; 330. a closing part; 340. a first rotating shaft; 400. a staple cartridge assembly; 410. a mounting base; 420. a driving member; 430. a nail pushing piece; 440. stitching nails; 500. a guide.

Detailed Description

The application will be described in further detail below with reference to the drawings by means of specific embodiments. Wherein like elements in different embodiments are numbered alike in association. In the following embodiments, numerous specific details are set forth in order to provide a better understanding of the present application. However, one skilled in the art will readily recognize that some of the features may be omitted, or replaced by other elements, materials, or methods in different situations. In some instances, related operations of the present application have not been shown or described in the specification in order to avoid obscuring the core portions of the present application, and may be unnecessary to persons skilled in the art from a detailed description of the related operations, which may be presented in the description and general knowledge of one skilled in the art.

Furthermore, the described features, operations, or characteristics of the description may be combined in any suitable manner in various embodiments. Also, various steps or acts in the method descriptions may be interchanged or modified in a manner apparent to those of ordinary skill in the art. Thus, the various orders in the description and drawings are for clarity of description of only certain embodiments, and are not meant to be required orders unless otherwise indicated.

The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated.

The present embodiment provides a surgical instrument.

Referring to fig. 1-9, the surgical instrument includes a handle assembly 100, a barrel assembly 200, an actuator assembly 300, and a cartridge assembly 400.

The proximal end of the barrel assembly 200 is connected to the handle assembly 100, and the barrel assembly 200 includes a transmission mechanism. The distal end of the barrel assembly 200 is connected to an actuator assembly 300, the actuator assembly 300 comprising a first jaw 310 and a second jaw 320, the first jaw 310 being movably connected to the second jaw 320, the first jaw 310 and the second jaw 320 being capable of relative movement to effect closure and opening, the first jaw 310 and the second jaw 320 defining a mounting cavity therebetween. The proximal end of the first jaw 310 or the proximal end of the second jaw 320 has a closure portion 330, the closure portion 330 being configured to close a gap between the proximal ends of the first and second jaws 310, 320. The nail bin assembly 400 is disposed in the mounting cavity, the nail bin assembly 400 includes a mounting seat 410 and a driving member 420, and a plurality of staples 440 arranged in an array are disposed on the mounting seat 410. The driver 420 is movably disposed on the mounting base 410, and the driver 420 is configured to move from a proximal end of the mounting base 410 to a distal end of the mounting base 410 to fire the staples 440. When the first jaw 310 and the second jaw 320 are closed, the array of staples 440 overlap the closure portion 330 in the direction of movement of the driver 420, and the overlap is less than one column of staples 440.

Since staples 440 having overlap with closure portions 330 cannot be fully inserted into tissue when the surgical instrument is in use, these overlap do not fall into the "effective staple length" in the length value of cartridge assembly 400 in the length direction. The reduction of the length of the non-operative overlap to less than the length of a column of staples 440 is beneficial for reducing the overall length of cartridge assembly 400 and, thus, the length of actuator assembly 300 without resulting in the completion of an un-stapled tissue. Thereby being beneficial to providing a surgical instrument which can meet the normal use of doctors and is compatible to enter a narrower space.

Note that, referring to fig. 6, the staples 440 form "rows" when they are arranged in the horizontal direction in fig. 6, the staples 440 form "columns" when they are arranged in the vertical direction in fig. 6, and the staples 440 are generally three in groups and are distributed in a "delta" shape. That is, the staples 440 in box a in fig. 6 are a column of staples 440.

Referring to fig. 1-3, in one embodiment, first jaw 310 and second jaw 320 are rotatably coupled such that first jaw 310 and second jaw 320 are rotatable about first axis of rotation 340 to effect closure and opening. When the first jaw 310 and the second jaw 320 are closed, the distance between the distal end of the closing portion 330 and the first rotating shaft 340 in the moving direction of the driving member 420 is a first length value, the distance between the distal ends of the staples 440 arranged in an array and the distal end of the closing portion 330 in the moving direction of the driving member 420 is a second length value, the ratio of the first length value to the second length value is a, and the value range of a is more than 0 and less than 0.42.

The length of the effector assembly 300 from the distal end of the closure portion 330 to the first shaft 340 does not clamp tissue during use of the surgical instrument, and the effective staple length of the staples 440 from the distal ends of the array of staples 440 to the distal end of the closure portion 330 on the cartridge assembly 400. That is, the first length value is an inactive length value from the standpoint of grasping and stapling tissue, and the second length value is an active length value from the standpoint of grasping and stapling tissue, while the design to reduce the length of the actuator assembly 300 should be made to ensure the active length value and reduce the inactive length value as much as possible. Therefore, the smaller the value of the ratio a, the more advantageous it is to shorten the length of the actuator assembly 300. The ratio a is limited in the value range of 0 < a < 0.42, so that the surgical instrument which can meet the normal use of doctors and is compatible with entering a narrower space is beneficial to realization. The value of the ratio a can be 0.1, 0.2, 0.3, 0.4 or other suitable values.

Specifically, referring to fig. 1-3, the first length value is the length indicated by L1 in fig. 3, the second length value is the length indicated by L2 in fig. 3, and the third length value is the length indicated by L3 in fig. 3. The direction of movement of the driver 420 is parallel to the directions indicated by L1, L2 and L3 in fig. 3.

Referring to fig. 1-3, in one embodiment, when the first jaw 310 and the second jaw 320 are closed, the distance between the distal end of the cartridge assembly 400 and the distal end of the array of staples 440 in the direction of movement of the driver 420 is a third length value, the distance between the distal end of the array of staples 440 in the direction of movement of the driver 420 and the distal end of the closing portion 330 is a second length value, the ratio of the third length value to the second length value is b, and the value of b ranges from 0 < b < 0.25.

During use of the surgical instrument, the distance from the distal end of the cartridge assembly 400 to the distal ends of the array of staples 440 on the cartridge assembly 400 does not fire the staples 440, and the effective staple length of the staples 440 from the distal ends of the array of staples 440 to the distal ends of the closure portion 330 on the cartridge assembly 400. That is, the third length value is a non-effective length value from the viewpoint of suturing tissue, and the second length value is an effective length value from the viewpoint of suturing tissue, and the effective length value and the non-effective length value should be ensured as much as possible when designing the reduction of the length of the actuator assembly 300. Accordingly, the smaller the value of the ratio b, the more advantageous it is to shorten the length of the cartridge assembly 400 and, thus, the length of the actuator assembly 300. The ratio b is limited in the value range of 0 < b < 0.25, so that the surgical instrument which can meet the normal use of doctors and is compatible with entering a narrower space is beneficial to realization. The value of the ratio b may be specifically 0.05, 0.1, 0.15, 0.2 or other suitable values.

Referring to fig. 1-7, in one embodiment, the cartridge assembly 400 further includes a staple pusher 430, wherein the staple pusher 430 is movably disposed on the mounting base 410, and the driver 420 is configured to move the staple pusher 430 toward the staples 440 when moving from the proximal end to the distal end of the mounting base 410, so as to fire the staples 440. The distance between the driving piece 420 and the nail pushing piece 430 in the moving direction of the driving piece 420 is c, and the value range of c is more than or equal to 0 and less than or equal to 0.5mm.

Referring to fig. 4-7, in use of the surgical instrument, the driver 420 is moved along the length of the cartridge assembly 400 adjacent to the staple pusher 430 into contact with the staple pusher 430 and then drives the staple pusher 430 toward the staples 440 to fire the staples 440. That is, the distance of movement that the driver 420 does not contact the staple pusher 430 does not result in the firing of the staples 440, and the distance of movement that does not result in the firing of the staples 440 should be reduced when the design is made to reduce the length of the actuator assembly 300. Accordingly, the smaller the value of c, the more advantageous it is to shorten the length of cartridge assembly 400 and, in turn, the length of actuator assembly 300. The value of c is limited in the value range of 0-0.5 mm, so that the surgical instrument which can meet the normal use of doctors and is compatible with entering a narrower space is realized. The specific value of c may be 0.1, 0.2, 0.3, 0.4 or other suitable value.

Referring to fig. 1-3, 8 and 9, in one embodiment, the surgical instrument further includes a guide 500, the guide 500 being removably mounted to the first jaw 310 or the second jaw 320 for guiding the first jaw 310 or the second jaw 320 into tissue. The guide 500 is mounted on the first jaw 310 or the second jaw 320, and when the first jaw 310 and the second jaw 320 are closed, the distance between the distal end of the guide 500 and the distal end of the cartridge assembly 400 in the moving direction of the driver 420 is d, and the value of d is 0.ltoreq.d.ltoreq.1.5 mm.

In using the surgical instrument, it is sometimes necessary to guide the first and second jaws 310, 320 into tissue through the shape of the guide 500, but if the guide 500 is extended too long in the direction of movement of the driver 420, the first and second jaws 310, 320 may also be affected into a narrower space from the perspective of the overall length. Accordingly, in designing to reduce the overall length of the actuator assembly 300 and guide 500, the smaller the value of d, the more advantageous it is to reduce the overall length of the actuator assembly 300 and guide 500. The value of d is limited in the value range of 0-1.5 mm, so that the surgical instrument which can meet the normal use of doctors and is compatible with entering a narrower space is realized. Specifically, referring to fig. 8 and 9, the distal end of guide 500 is spaced from the distal end of cartridge assembly 400 in the direction of movement of driver 420 by the length of the line segment indicated at L4 in fig. 9. The specific value of d may be 0.05, 0.1 or other suitable value.

In another aspect, the present embodiment also provides a surgical instrument.

Referring to fig. 1-9, the surgical instrument includes a handle assembly 100, a barrel assembly 200, an actuator assembly 300, and a cartridge assembly 400.

Referring to fig. 1-3, the proximal end of the barrel assembly 200 is coupled to the handle assembly 100, and the barrel assembly 200 includes a transmission mechanism. The distal end of barrel assembly 200 is coupled to an actuator assembly 300, and actuator assembly 300 includes a first jaw 310 and a second jaw 320, with first jaw 310 and second jaw 320 being rotatably coupled such that first jaw 310 and second jaw 320 can rotate about a first axis of rotation 340 to effect closure and opening, with a mounting cavity formed between first jaw 310 and second jaw 320. The proximal end of the first jaw 310 or the proximal end of the second jaw 320 has a closure portion 330, the closure portion 330 being configured to close a gap between the proximal ends of the first and second jaws 310, 320. The nail bin assembly 400 is disposed in the mounting cavity, the nail bin assembly 400 includes a mounting seat 410 and a driving member 420, and a plurality of staples 440 arranged in an array are disposed on the mounting seat 410. The driver 420 is movably disposed on the mounting base 410, and the driver 420 is configured to move from a proximal end of the mounting base 410 to a distal end of the mounting base 410 to fire the staples 440. When the first jaw 310 and the second jaw 320 are closed, the distance between the distal end of the closing portion 330 and the first rotating shaft 340 in the moving direction of the driving member 420 is a first length value, the distance between the distal ends of the staples 440 arranged in an array and the distal end of the closing portion 330 in the moving direction of the driving member 420 is a second length value, the ratio of the first length value to the second length value is a, and the value range of a is more than 0 and less than 0.42.

The length of the effector assembly 300 from the distal end of the closure portion 330 to the first shaft 340 does not clamp tissue during use of the surgical instrument, and the effective staple length of the staples 440 from the distal ends of the array of staples 440 to the distal end of the closure portion 330 on the cartridge assembly 400. That is, the first length value is an inactive length value from the standpoint of grasping and stapling tissue, and the second length value is an active length value from the standpoint of grasping and stapling tissue, while the design to reduce the length of the actuator assembly 300 should be made to ensure the active length value and reduce the inactive length value as much as possible. Therefore, the smaller the value of the ratio a, the more advantageous it is to shorten the length of the actuator assembly 300. The ratio a is limited in the value range of 0 < a < 0.42, so that the surgical instrument which can meet the normal use of doctors and is compatible with entering a narrower space is beneficial to realization.

In another aspect, the present embodiment also provides a surgical instrument.

Referring to fig. 1-9, the surgical instrument includes a handle assembly 100, a barrel assembly 200, an actuator assembly 300, and a cartridge assembly 400.

Referring to fig. 1-3, the proximal end of the barrel assembly 200 is coupled to the handle assembly 100, and the barrel assembly 200 includes a transmission mechanism. The distal end of the barrel assembly 200 is connected to an actuator assembly 300, the actuator assembly 300 comprising a first jaw 310 and a second jaw 320, the first jaw 310 being movably connected to the second jaw 320, the first jaw 310 and the second jaw 320 being capable of relative movement to effect closure and opening, the first jaw 310 and the second jaw 320 defining a mounting cavity therebetween. The proximal end of the first jaw 310 or the proximal end of the second jaw 320 has a closure portion 330, the closure portion 330 being configured to close a gap between the proximal ends of the first and second jaws 310, 320. The nail bin assembly 400 is disposed in the mounting cavity, the nail bin assembly 400 includes a mounting seat 410 and a driving member 420, and a plurality of staples 440 arranged in an array are disposed on the mounting seat 410. The driver 420 is movably disposed on the mounting base 410, and the driver 420 is configured to move from a proximal end of the mounting base 410 to a distal end of the mounting base 410 to fire the staples 440. When the first jaw 310 and the second jaw 320 are closed, the distance between the distal end of the cartridge assembly 400 and the distal end of the array-arranged staples 440 in the moving direction of the driving member 420 is a third length value, the distance between the distal end of the array-arranged staples 440 and the distal end of the closing portion 330 in the moving direction of the driving member 420 is a second length value, the ratio of the third length value to the second length value is b, and the value of b is in the range of 0 < b < 0.25.

During use of the surgical instrument, the distance from the distal end of the cartridge assembly 400 to the distal ends of the array of staples 440 on the cartridge assembly 400 does not fire the staples 440, and the effective staple length of the staples 440 from the distal ends of the array of staples 440 to the distal ends of the closure portion 330 on the cartridge assembly 400. That is, the third length value is a non-effective length value from the viewpoint of suturing tissue, and the second length value is an effective length value from the viewpoint of suturing tissue, and the effective length value and the non-effective length value should be ensured as much as possible when designing the reduction of the length of the actuator assembly 300. Accordingly, the smaller the value of the ratio b, the more advantageous it is to shorten the length of the cartridge assembly 400 and, thus, the length of the actuator assembly 300. The ratio b is limited in the value range of 0 < b < 0.25, so that the surgical instrument which can meet the normal use of doctors and is compatible with entering a narrower space is beneficial to realization.

In another aspect, the present embodiment also provides a surgical instrument.

Referring to fig. 1-9, the surgical instrument includes a handle assembly 100, a barrel assembly 200, an actuator assembly 300, and a cartridge assembly 400.

Referring to fig. 1-7, the proximal end of the barrel assembly 200 is coupled to the handle assembly 100 and the barrel assembly 200 includes a transmission mechanism. The distal end of the barrel assembly 200 is connected to an actuator assembly 300, the actuator assembly 300 comprising a first jaw 310 and a second jaw 320, the first jaw 310 being movably connected to the second jaw 320, the first jaw 310 and the second jaw 320 being capable of relative movement to effect closure and opening, the first jaw 310 and the second jaw 320 defining a mounting cavity therebetween. The nail bin assembly 400 is disposed in the mounting cavity, the nail bin assembly 400 includes a mounting seat 410, a driving member 420 and a nail pushing member 430, and a plurality of arrayed stitching nails 440 are disposed on the mounting seat 410. The driving member 420 is movably disposed on the mounting base 410, and the driving member 420 can move from the proximal end of the mounting base 410 to the distal end of the mounting base 410. The staple pusher 430 is movably disposed on the mounting base 410, and the driving member 420 can drive the staple pusher 430 to move toward the staples 440 when moving from the proximal end to the distal end of the mounting base 410, so as to fire the staples 440. The distance between the driving piece 420 and the nail pushing piece 430 in the moving direction of the driving piece 420 is c, and the value range of c is more than or equal to 0 and less than or equal to 0.5mm.

In use of the surgical instrument, the driver 420 is moved adjacent to the staple pusher 430 along the length of the cartridge assembly 400 into contact with the staple pusher 430 and then drives the staple pusher 430 toward the staples 440 to fire the staples 440. That is, the distance of movement that the driver 420 does not contact the staple pusher 430 does not result in the firing of the staples 440, and the distance of movement that does not result in the firing of the staples 440 should be reduced when the design is made to reduce the length of the actuator assembly 300. Accordingly, the smaller the value of c, the more advantageous it is to shorten the length of cartridge assembly 400 and, in turn, the length of actuator assembly 300. The value of c is limited in the value range of 0-0.5 mm, so that the surgical instrument which can meet the normal use of doctors and is compatible with entering a narrower space is realized.

In another aspect, the present embodiment also provides a surgical instrument.

Referring to fig. 1-9, the surgical instrument includes a handle assembly 100, a barrel assembly 200, an actuator assembly 300, a cartridge assembly 400, and a guide 500.

Referring to fig. 1-3, 8 and 9, the proximal end of the barrel assembly 200 is coupled to the handle assembly 100 and the barrel assembly 200 includes a transmission mechanism. The distal end of the barrel assembly 200 is connected to an actuator assembly 300, the actuator assembly 300 comprising a first jaw 310 and a second jaw 320, the first jaw 310 being movably connected to the second jaw 320, the first jaw 310 and the second jaw 320 being capable of relative movement to effect closure and opening, the first jaw 310 and the second jaw 320 defining a mounting cavity therebetween. The nail bin assembly 400 is disposed in the mounting cavity, the nail bin assembly 400 includes a mounting seat 410 and a driving member 420, and a plurality of staples 440 arranged in an array are disposed on the mounting seat 410. The driver 420 is movably disposed on the mounting base 410, and the driver 420 is configured to move from a proximal end of the mounting base 410 to a distal end of the mounting base 410 to fire the staples 440. The guide 500 is detachably mounted to the first jaw 310 or the second jaw 320 for guiding the first jaw 310 and the second jaw 320 into tissue. The guide 500 is mounted on the first jaw 310 or the second jaw 320, and when the first jaw 310 and the second jaw 320 are closed, the distance between the distal end of the guide 500 and the distal end of the cartridge assembly 400 in the moving direction of the driver 420 is d, and the value of d is 0.ltoreq.d.ltoreq.1.5 mm.

In using the surgical instrument, it is sometimes necessary to guide the first and second jaws 310, 320 into tissue through the shape of the guide 500, but if the guide 500 is extended too long in the direction of movement of the driver 420, the first and second jaws 310, 320 may also be affected into a narrower space from the perspective of the overall length. Accordingly, in designing to reduce the overall length of the actuator assembly 300 and guide 500, the smaller the value of d, the more advantageous it is to reduce the overall length of the actuator assembly 300 and guide 500. The value of d is limited in the value range of 0-1.5 mm, so that the surgical instrument which can meet the normal use of doctors and is compatible with entering a narrower space is realized. Specifically, referring to FIG. 9, the distal end of guide 500 is spaced from the distal end of cartridge assembly 400 in the direction of movement of driver 420 by the length of the line segment indicated by L4 in FIG. 9.

The foregoing description of the invention has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the invention pertains, based on the idea of the invention.

Claims (10)

1. A surgical instrument, comprising:

A handle assembly;

a barrel assembly, a proximal end of the barrel assembly being connected to the handle assembly, the barrel assembly including a drive mechanism;

The distal end of the gun barrel assembly is connected with the actuator assembly, the actuator assembly comprises a first jaw and a second jaw, the first jaw is movably connected with the second jaw, the first jaw and the second jaw can move relatively to realize closing and opening, and a mounting cavity is formed between the first jaw and the second jaw; the proximal end of the first jaw or the proximal end of the second jaw has a closure portion for closing a gap between the proximal ends of the first and second jaws;

the nail bin assembly is arranged in the mounting cavity and comprises a mounting seat and a driving piece, and a plurality of staples arranged in an array are arranged on the mounting seat; the driving piece is movably arranged on the mounting seat, and can move from the proximal end of the mounting seat to the distal end of the mounting seat so as to fire the suturing nail; when the first jaw and the second jaw are closed, the staples arranged in an array form have an overlapping portion with the closing portion in the moving direction of the driving piece, and the overlapping portion is smaller than one row of staples.

2. The surgical instrument of claim 1, wherein the first jaw and the second jaw are rotatably coupled such that the first jaw and the second jaw are rotatable about a first axis of rotation to effect closure and opening; when the first jaw and the second jaw are closed, the distance between the distal end of the closing part and the first rotating shaft in the moving direction of the driving piece is a first length value, the distance between the distal ends of the staples arranged in an array in the moving direction of the driving piece and the distal end of the closing part is a second length value, the ratio of the first length value to the second length value is a, and the value range of a is more than 0 and less than 0.42.

3. The surgical instrument of claim 1, wherein when the first jaw and the second jaw are closed, the distal end of the cartridge assembly is a third length value from the distal ends of the staples arranged in an array in the direction of driver movement, the distal ends of the staples arranged in an array are a second length value from the distal ends of the closure in the direction of driver movement, the ratio of the third length value to the second length value is b, and b ranges from 0< b < 0.25.

4. The surgical instrument of claim 1, wherein the cartridge assembly further comprises a staple pusher movably disposed in the mounting block, the driver being configured to move the staple pusher toward the staples upon movement of the driver from the proximal end of the mounting block to the distal end to fire the staples; the distance between the driving piece and the nail pushing piece in the moving direction of the driving piece is c, and the value range of c is more than or equal to 0 and less than or equal to 0.5mm.

5. The surgical instrument of claim 1, further comprising a guide removably mounted to the first jaw or the second jaw for guiding the first jaw or the second jaw into tissue; the guide piece is arranged on the first jaw or the second jaw, when the first jaw and the second jaw are closed, the distance between the distal end of the guide piece and the distal end of the nail bin assembly in the moving direction of the driving piece is d, and the value range of d is more than or equal to 0 and less than or equal to 1.5mm.

6. A surgical instrument, comprising:

A handle assembly;

a barrel assembly, a proximal end of the barrel assembly being connected to the handle assembly, the barrel assembly including a drive mechanism;

An effector assembly, the distal end of the barrel assembly being connected to the effector assembly, the effector assembly comprising a first jaw and a second jaw, the first jaw and the second jaw being rotatably connected such that the first jaw and the second jaw are rotatable about a first axis of rotation to effect closure and opening, a mounting cavity being formed between the first jaw and the second jaw; the proximal end of the first jaw or the proximal end of the second jaw has a closure portion for closing a gap between the proximal ends of the first and second jaws;

The nail bin assembly is arranged in the mounting cavity and comprises a mounting seat and a driving piece, and a plurality of staples arranged in an array are arranged on the mounting seat; the driving piece is movably arranged on the mounting seat, and can move from the proximal end of the mounting seat to the distal end of the mounting seat so as to fire the suturing nail; when the first jaw and the second jaw are closed, the distance between the distal end of the closing part and the first rotating shaft in the moving direction of the driving piece is a first length value, the distance between the distal ends of the staples arranged in an array in the moving direction of the driving piece and the distal end of the closing part is a second length value, the ratio of the first length value to the second length value is a, and the value range of a is more than 0 and less than 0.42.

7. The surgical instrument of claim 6, wherein a distal end of the cartridge assembly is a third length value from a distal end of the staples arranged in an array in a direction of driver movement when the first jaw and the second jaw are closed, a ratio of the third length value to the second length value being b, b being in a range of 0 < b < 0.25.

8. A surgical instrument, comprising:

A handle assembly;

a barrel assembly, a proximal end of the barrel assembly being connected to the handle assembly, the barrel assembly including a drive mechanism;

The distal end of the gun barrel assembly is connected with the actuator assembly, the actuator assembly comprises a first jaw and a second jaw, the first jaw is movably connected with the second jaw, the first jaw and the second jaw can move relatively to realize closing and opening, and a mounting cavity is formed between the first jaw and the second jaw; the proximal end of the first jaw or the proximal end of the second jaw has a closure portion for closing a gap between the proximal ends of the first and second jaws;

The nail bin assembly is arranged in the mounting cavity and comprises a mounting seat and a driving piece, and a plurality of staples arranged in an array are arranged on the mounting seat; the driving piece is movably arranged on the mounting seat, and can move from the proximal end of the mounting seat to the distal end of the mounting seat so as to fire the suturing nail; when the first jaw and the second jaw are closed, the distance between the distal end of the nail bin assembly and the distal ends of the staples arranged in an array in the moving direction of the driving piece is a third length value, the distance between the distal ends of the staples arranged in the array in the moving direction of the driving piece and the distal ends of the closing parts is a second length value, the ratio of the third length value to the second length value is b, and the value range of b is more than 0 and less than 0.25.

9. A surgical instrument, comprising:

A handle assembly;

a barrel assembly, a proximal end of the barrel assembly being connected to the handle assembly, the barrel assembly including a drive mechanism;

The distal end of the gun barrel assembly is connected with the actuator assembly, the actuator assembly comprises a first jaw and a second jaw, the first jaw is movably connected with the second jaw, the first jaw and the second jaw can move relatively to realize closing and opening, and a mounting cavity is formed between the first jaw and the second jaw;

The nail bin assembly is arranged in the mounting cavity and comprises a mounting seat, a driving piece and a nail pushing piece, and a plurality of staples arranged in an array are arranged on the mounting seat; the driving piece is movably arranged on the mounting seat, and can move from the proximal end of the mounting seat to the distal end of the mounting seat; the driving piece can drive the nail pushing piece to move towards the stitching nails when moving from the proximal end to the distal end of the mounting seat so as to fire the stitching nails; the distance between the driving piece and the nail pushing piece in the moving direction of the driving piece is c, and the value range of c is more than or equal to 0 and less than or equal to 0.5mm.

10. A surgical instrument, comprising:

A handle assembly;

a barrel assembly, a proximal end of the barrel assembly being connected to the handle assembly, the barrel assembly including a drive mechanism;

The distal end of the gun barrel assembly is connected with the actuator assembly, the actuator assembly comprises a first jaw and a second jaw, the first jaw is movably connected with the second jaw, the first jaw and the second jaw can move relatively to realize closing and opening, and a mounting cavity is formed between the first jaw and the second jaw;

The nail bin assembly is arranged in the mounting cavity and comprises a mounting seat and a driving piece, and a plurality of stitching nails distributed in an array are arranged on the mounting seat; the driving piece is movably arranged on the mounting seat, and can move from the proximal end of the mounting seat to the distal end of the mounting seat so as to fire the suturing nail;

And a guide detachably mounted to the first jaw or the second jaw for guiding the first jaw and the second jaw into tissue; the guide piece is arranged on the first jaw or the second jaw, when the first jaw and the second jaw are closed, the distance between the distal end of the guide piece and the distal end of the nail bin assembly in the moving direction of the driving piece is d, and the value range of d is more than or equal to 0 and less than or equal to 1.5mm.