CN107049402B - Quick assembling and disassembling structure of actuating head of surgical circular anastomat - Google Patents
Quick assembling and disassembling structure of actuating head of surgical circular anastomat Download PDFInfo
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- CN107049402B CN107049402B CN201710345537.5A CN201710345537A CN107049402B CN 107049402 B CN107049402 B CN 107049402B CN 201710345537 A CN201710345537 A CN 201710345537A CN 107049402 B CN107049402 B CN 107049402B
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- anvil
- nail
- assembly
- tubular lip
- axial
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B17/115—Staplers for performing anastomosis in a single operation
- A61B17/1155—Circular staplers comprising a plurality of staples
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3209—Incision instruments
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B2017/1132—End-to-end connections
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B2017/1135—End-to-side connections, e.g. T- or Y-connections
Abstract
The quick assembly and disassembly structure of the actuating head of the surgical circular anastomat realizes that the nail bin frame and the extension tube are locked together by the buckle connecting component, and simultaneously, the conical inclined surface on the nail bin frame and the tubular lip on the extension tube are mutually close, when the tubular lip on the extension tube is pinched and flattened, the tubular lip moves along the conical inclined surface on the nail bin frame, so that the tubular lip pushes the nail bin frame and the extension tube which are locked together by the buckle connecting component to be mutually separated; the nail anvil pull rod and the nail anvil connecting rod are axially buckled and locked together, and simultaneously, the conical inclined surface on the nail anvil pull rod and the tubular lip on the nail anvil connecting rod are mutually close. When the tubular lip on the anvil extension rod is pinched, the tubular lip moves along the conical inclined plane on the anvil pull rod, so that the tubular lip pushes the anvil pull rod and the anvil extension rod which are axially connected and locked together in a snap-fit manner to be separated from each other. The invention achieves the purpose of rapidly assembling and disassembling the nail bin assembly and the nail anvil assembly, so that the surgical circular anastomat is safer and more convenient to use and has lower use cost.
Description
Technical Field
The invention relates to a quick assembly and disassembly structure of an actuating head of various surgical circular anastomat, in particular to a quick assembly and disassembly structure of an actuating head of various disposable surgical circular anastomat, and also relates to a quick assembly and disassembly structure of an actuating head of various reusable surgical circular anastomat, more particularly to a quick assembly and disassembly structure of an actuating head of various endoscopic surgical circular anastomat, and even more particularly to a quick assembly and disassembly structure of an actuating head of various electric surgical circular anastomat, and even more particularly to a quick assembly and disassembly structure of an actuating head of a surgical circular anastomat used by various surgical robots.
Background
Various surgical circular anastomat are used for replacing manual needle and line anastomosis operation in surgical operation, are widely used for end-to-end anastomosis, end-to-side anastomosis and other operations of organs and tissues of human digestive tract organs, urogenital organs and the like, are particularly suitable for anastomosis operations with exposure and difficult operation, can reduce operation time and improve operation quality.
The actuating head of the surgical circular stapler described in U.S. patent No. 20130072955A1 includes a cartridge assembly and an anvil assembly. The actuator head is mounted on the extension tube of the surgical circular stapler. The nail bin assembly comprises a nail bin, a anastomotic nail, a cutting knife, a nail pushing block and a nail bin frame. The nail bin is fixedly connected with the nail bin frame. The nail bin and the nail bin frame are internally provided with a anastomat, a cutting knife and a nail pushing block. The staple pushing block pushes the staples and the cutting knife to move in the staple cartridge. The nail bin frame is connected with an extension tube in the surgical circular anastomat. The nail pushing block is connected with a firing bar in an extension tube in the surgical circular anastomat. The nail anvil component comprises a nail anvil, a knife anvil and a nail anvil extension rod. The nail anvil, the knife anvil and the nail anvil extension rod are connected together. The nail anvil extension rod is in snap connection with the nail anvil pull rod in the extension tube in the surgical circular anastomat. The first unsatisfactory point of the actuating head of the surgical circular stapler is that the cartridge rack in the cartridge assembly is fixedly connected with the extension tube in the surgical circular stapler in a non-detachable manner, so that the whole surgical circular stapler needs to be replaced every time the stapling is completed, the specification of the actuating head is found to be unsatisfactory in the use process, and the polluted actuating head of the surgical circular stapler needs to be replaced completely, so that the use cost is too high. The second unsatisfactory point of the above-mentioned surgical circular stapler's actuating head is that, in order to ensure that the anvil assembly can pull the organ and tissue to be stapled, the snap connection between the anvil extension rod in the anvil assembly and the anvil pull rod in the extension tube is required to withstand sufficient tension, and since the anvil assembly needs to be assembled and disassembled several times during the operation, the operation space is limited, and a large force is required to detach the anvil extension rod from the anvil pull rod, the anvil assembly can easily strike the tissue of the surrounding organ in the operation space when the anvil extension rod is detached, causing injury to the human body.
The surgical circular stapler of the type described in U.S. patent No. 20150320420A1 has a head that employs three removable configurations of the cartridge assembly so that the cartridge assembly can be replaced during the procedure. The first is that there are four L-shaped grooves on the nail bin frame of the nail bin assembly, there are four lugs on the extension pipe, connect torsion springs between nail bin frame and extension pipe, after four lugs on the extension pipe insert four L-shaped grooves on the nail bin frame, torsion springs link nail bin frame and extension pipe together. The second is to adopt the small inclination angle buckle connection which is convenient to assemble and disassemble between the nail bin frame and the extension tube of the nail bin assembly. And thirdly, the nail bin frame of the nail bin assembly is connected with the extension pipe through threads. The dissatisfaction of the detachable construction of the three cartridge assemblies of the cartridge assembly of the above-described surgical circular stapler is that, during surgery, the actuating head of the surgical circular stapler is often moved and rotated in an organ cavity that is relatively compact in size with the actuating head, which may cause mutual displacement or even disengagement between the cartridge assembly and the extension tube during operation.
From the above, it is apparent that the mounting and dismounting structure of the actuating head of the known surgical circular stapler needs to be further improved, so that the mounting and dismounting structure of the actuating head of the surgical circular stapler is safer and more convenient to use and has lower use cost.
Disclosure of Invention
The first object of the present invention is to provide a quick assembly and disassembly structure for an actuating head of a surgical circular stapler, which realizes that a cartridge frame and an extension tube are locked together by a snap connection assembly, and simultaneously, a conical inclined surface on the cartridge frame and a tubular lip on the extension tube are mutually closed, and when the tubular lip on the extension tube is pinched and flattened, the tubular lip moves along the conical inclined surface on the cartridge frame, so that the tubular lip pushes the cartridge frame and the extension tube locked together by the snap connection assembly to be mutually separated. The invention achieves the aim of rapidly assembling and disassembling the nail bin assembly, so that the surgical circular anastomat is safer and more convenient to use and has lower use cost.
The second aim of the invention is to provide a quick assembly and disassembly structure of an actuating head of a surgical circular anastomat, which realizes that a pin anvil pull rod and a pin anvil connecting rod are axially connected and locked together in a buckling way, and simultaneously, a conical inclined plane on the pin anvil pull rod and a tubular lip on the pin anvil connecting rod are mutually close. When the tubular lip on the anvil extension bar is pinched, the tubular lip moves along the conical incline on the anvil pull bar, so that the tubular lip pushes the anvil pull bar and the anvil extension bar which are locked together by the axial snap connection to separate from each other. The invention achieves the aim of rapidly assembling and disassembling the nail anvil assembly, so that the surgical circular anastomat is safer and more convenient to use and has lower use cost.
The invention aims at realizing the following technical scheme:
the actuating head of the surgical circular stapler of the present invention includes a cartridge assembly and an anvil assembly. The actuator head is mounted on the extension tube of the surgical circular stapler. The nail bin assembly comprises a nail bin, a anastomotic nail, a cutting knife, a nail pushing block and a nail bin frame. The nail bin is fixedly connected with the nail bin frame. The nail bin and the nail bin frame are internally provided with a anastomat, a cutting knife and a nail pushing block. The staple pushing block pushes the staples and the cutting knife to move in the staple cartridge. The nail bin frame is connected with an extension tube in the surgical circular anastomat. The nail pushing block is connected with a firing bar in an extension tube in the surgical circular anastomat. The nail anvil component comprises a nail anvil, a knife anvil and a nail anvil extension rod. The nail anvil, the knife anvil and the nail anvil extension rod are connected together. The nail anvil extension rod is connected with a nail anvil pull rod in an extension tube in the surgical circular anastomat.
The quick assembly and disassembly structure of the actuating head of the surgical circular stapler of the invention comprises a conical inclined surface, a tubular lip and a buckle connecting component. The snap connection assembly is composed of a first part and a second part. The first part of the buckle connection component is provided with a conical inclined plane. The generatrix of the conical inclined surface can be a straight line or a curve. The second part of the snap connection assembly has a tubular lip thereon. The tubular lip can be circular or conical, and the bus can be straight or curved. When the first and second members are connected together, the first and second members are locked together by the snap connection assembly, preventing axial movement of the first member relative to the second member, and simultaneously, the conical ramp on the first member and the tubular lip on the second member draw together. When the tubular lip on the second member is pinched flat, the tubular lip moves along the conical ramp on the first member so that the tubular lip pushes the first and second members, which are locked together by the snap connection assembly, apart from each other.
The first member may have a circumferential groove thereon. The second member may have a circumferential projection thereon. The circumferential groove on the first part and the circumferential projection on the second part constitute an axial snap connection in the snap connection assembly. When the first and second members are connected together, the circumferential groove on the first member and the circumferential projection on the second member are locked together by the axial snap connection, preventing the first member from moving axially relative to the second member, while the conical ramp on the first member and the tubular lip on the second member are drawn toward each other. When the tubular lip on the second member is pinched flat, the tubular lip moves along the conical ramp on the first member so that the tubular lip pushes the circumferential groove on the first member and the circumferential projection on the second member, which are locked together by the axial snap connection, apart from each other.
The first member may have an axial projection thereon. The second member may have an axial groove therein. The axial projection on the first part and the axial groove on the second part form a circumferential positioning connection in the snap connection assembly. The first member is prevented from rotating within the second member when the axial projection on the first member is inserted into the axial recess on the second member.
In the quick assembly and disassembly configuration of the actuation head of the surgical circular stapler of the present invention, the first component in the snap-fit connection assembly may be a cartridge bay in the cartridge assembly. The second component in the snap connection assembly may be an extension tube in a surgical circular stapler. When the nail bin frame and the extension tube are connected together, the nail bin frame and the extension tube are locked together by the buckle connecting component to prevent the nail bin frame from moving along the axial direction relative to the extension tube, and simultaneously, the conical inclined surface on the nail bin frame and the tubular lip on the extension tube are mutually closed. When the tubular lip on the extension tube is pinched flat, the tubular lip moves along the conical ramp on the cartridge frame, so that the tubular lip pushes the cartridge frame and extension tube, which are locked together by the snap connection assembly, apart from each other.
The cartridge bay in the cartridge assembly may have a circumferential groove thereon. The extension tube may have circumferential projections thereon. The circumferential groove on the nail bin frame and the circumferential protruding block on the extension pipe form axial buckle connection in the buckle connection assembly. After the circumferential protruding blocks on the extension pipe elastically deform into the circumferential grooves on the nail bin frame, the circumferential grooves on the nail bin frame and the circumferential protruding blocks on the extension pipe are connected and locked together by the axial buckle to prevent the nail bin frame from moving along the axial direction relative to the extension pipe, and simultaneously, the conical inclined surface on the nail bin frame and the tubular lip on the extension pipe are mutually closed. When the tubular lip on the extension tube is pinched flat, the tubular lip moves along the conical incline on the cartridge frame, so that the tubular lip pushes the circumferential projection on the extension tube to elastically deform out of the circumferential groove on the cartridge frame, and the circumferential groove on the cartridge frame and the circumferential projection on the extension tube which are locked together by the axial snap connection are separated from each other. During operation, the circumferential projection on the extension tube elastically deforms to give an audible cue that the axial snap connection between the cartridge housing and the extension tube has been altered.
The cartridge bay in the cartridge assembly may have an axial projection thereon. The extension tube may have an axial groove therein. The axial protruding blocks on the nail bin frame and the axial grooves on the extension pipe form circumferential positioning connection in the buckle connection assembly. When the axial lug on the nail bin frame is inserted into the axial groove on the extension tube, the nail bin frame is prevented from rotating in the extension tube.
In the quick assembly and disassembly configuration of the actuating head of the surgical circular stapler of the present invention, the first component in the snap-fit connection assembly may be an anvil pull rod within the extension tube. The second component in the snap connection assembly may be an anvil extension bar in the anvil assembly. When the nail anvil pull rod and the nail anvil connecting rod are connected together, the nail anvil pull rod and the nail anvil connecting rod are locked together by the buckle connecting component to prevent the nail anvil pull rod from moving along the axial direction relative to the nail anvil connecting rod, and simultaneously, the conical inclined surface on the nail anvil pull rod and the tubular lip on the nail anvil connecting rod are mutually close. When the tubular lip on the anvil extension rod is pinched, the tubular lip moves along the conical inclined surface on the anvil pull rod, so that the tubular lip pushes the anvil pull rod and the anvil extension rod locked together by the buckle connection assembly to be separated from each other.
The anvil pull rod in the extension tube can be provided with a circumferential groove. The anvil extension bar in the anvil assembly may have a circumferential projection thereon. The circumferential groove on the pin anvil pull rod and the circumferential protruding block on the pin anvil pull rod form axial buckle connection in the buckle connection assembly. After the circumferential protruding blocks on the nail anvil connecting rod elastically deform into the circumferential grooves on the nail anvil connecting rod, the circumferential grooves on the nail anvil connecting rod and the circumferential protruding blocks on the nail anvil connecting rod are connected and locked together by the axial buckle to prevent the nail anvil connecting rod from moving along the axial direction relative to the nail anvil connecting rod, and simultaneously, the conical inclined plane on the nail anvil connecting rod and the tubular lip on the nail anvil connecting rod are mutually closed. When the tubular lip on the anvil connecting rod is pinched, the tubular lip moves along the conical inclined plane on the anvil connecting rod, so that the circumferential projection on the anvil connecting rod is pushed by the tubular lip to elastically deform and withdraw from the circumferential groove on the anvil connecting rod, and the circumferential groove on the anvil connecting rod and the circumferential projection on the anvil connecting rod which are connected and locked together by the axial buckle are separated from each other. During operation, the circumferential protruding blocks on the pin anvil connecting rod elastically deform to give out an audible prompt, and the axial buckling connection state between the pin anvil connecting rod and the pin anvil connecting rod is changed.
Drawings
FIG. 1 is a front view showing an actuator head mounted on an extension tube of the surgical circular stapler of the present invention;
FIG. 2 is a front view illustrating the extension tube and cartridge assembly of FIG. 1;
FIG. 3 is a front view illustrating an anvil pull rod and anvil assembly within the extension tube of FIG. 1;
FIG. 4 is a front view illustrating a firing bar within the extension tube of FIG. 1 and a staple pusher block, staples and a cutting knife within the cartridge assembly;
FIG. 5 is a front view illustrating the cartridge assembly of FIG. 1;
FIG. 6 is a front view illustrating a cartridge bay within the cartridge assembly of FIG. 5;
FIG. 7 is a front view illustrating a staple cartridge within the staple cartridge assembly of FIG. 5;
fig. 8 is an external view showing the extension pipe of fig. 2;
FIG. 9 is an external view showing the tubular lip of FIG. 2 mounted on an extension tube;
FIG. 10 is a front view showing a snap-fit connection assembly of the extension tube and cartridge bay of FIG. 2;
FIG. 11 is a sectional view taken along line 11-11 of FIG. 10;
FIG. 12 is a front view showing a snap-fit connection assembly of the anvil pull rod and anvil assembly of FIG. 3;
FIG. 13 is a cross-sectional view showing 13-13 of FIG. 12;
FIG. 14 is an exterior view showing the anvil assembly and tubular lip of FIG. 12;
FIG. 15 is an exterior view showing the anvil assembly of FIG. 12;
FIG. 16 is an exterior view showing the anvil pull rod of FIG. 12;
fig. 17 is an external view showing the tubular lip of fig. 12.
Detailed Description
By way of example, the following describes a preferred embodiment of a quick assembly and disassembly structure of the actuating head of a surgical circular stapler of the present invention, in connection with the accompanying drawings. The scope of the invention will be pointed out in the appended claims. It should be appreciated that some or all of the figures are schematic illustrations of preferred embodiments of the invention, and that the actual dimensions of the illustrated parts are not depicted. The actual manner in which the above-recited and other objects and advantages of the present invention are achieved will be more clearly understood with reference to the detailed description of the preferred embodiments.
In the figures and in the following description, the term "axial" is referenced to the direction of the long axis of the actuating head of the surgical circular stapler and the term "circumferential" is referenced to the direction of the circumference of the radial section of the actuating head of the surgical circular stapler. Other positional and directional terms may be understood from the drawings and the following description.
Fig. 1 to 17 show a quick-attach and detach structure of an actuating head of a surgical circular stapler of the present invention.
As shown in fig. 1-4, the implement head 1 includes a cartridge assembly 2 and an anvil assembly 3. The actuator head 1 is mounted on an extension tube 4 of a surgical circular stapler. The cartridge assembly 2 comprises a cartridge 5, staples 6, a cutter 7, a push block 8 and a cartridge frame 9. The nail bin 5 is fixedly connected with a nail bin frame 9. The staple 6, the cutting knife 7 and the staple pushing block 8 are arranged in the staple cartridge 5 and the staple cartridge frame 9. The staple pusher 8 pushes the staples 6 and the cutter 7 to move within the cartridge 5. The cartridge holder 9 is connected to the extension tube 4. The nail pushing block 8 is connected with a firing bar 10 in the extension tube 4. The anvil assembly 3 includes an anvil 11, a knife anvil 12 and an anvil extension bar 13. The nail anvil 11, the knife anvil 12 and the nail anvil extension rod 13 are connected together. The anvil extension rod 13 is connected with an anvil pull rod 14 in the extension tube 4.
The quick assembly and disassembly structure of the actuating head 1 of the surgical circular stapler comprises a quick assembly and disassembly structure between a cartridge frame 9 in the cartridge assembly 2 and the extension tube 4 and a quick assembly and disassembly structure between an anvil pull rod 14 in the extension tube 4 and an anvil extension rod 13 in the anvil assembly 3.
As shown in fig. 5 to 11, in the quick-release structure between the cartridge holder 9 and the extension tube 4, the cartridge holder 9 and the extension tube 4 in the cartridge assembly 2 constitute a snap-fit connection assembly 15. The cartridge holder 9 is provided with a circumferential groove 16, an axial projection 17 and a conical inclined surface 18. The extension tube 4 has a circumferential projection 19, an axial groove 20 and a tubular lip 21. The tubular lip 21 is fixedly mounted on the extension tube 4. The circumferential groove 16 on the cartridge bay 9 and the circumferential projection 19 on the extension tube 4 constitute an axial snap connection in the snap connection assembly 15. The axial projections 17 on the cartridge housing 9 and the axial grooves 20 on the extension tube 4 form a circumferentially positioned connection in the snap connection assembly 15.
The cartridge housing 9 is prevented from rotating within the extension tube 4 when the axial projection 17 on the cartridge housing 9 is inserted into the axial recess 20 on the extension tube 4. After the circumferential projection 19 on the extension tube 4 is elastically deformed into the circumferential groove 16 on the cartridge holder 9, the circumferential groove 16 on the cartridge holder 9 and the circumferential projection 19 on the extension tube 4 are locked together by the axial snap connection, preventing the cartridge holder 9 from moving axially relative to the extension tube 4, and simultaneously, the conical inclined surface 18 on the cartridge holder 9 and the tubular lip 21 on the extension tube 4 are brought close to each other. When pinching the tubular lip 21 on the extension tube 4, the tubular lip 21 moves along the conical ramp 18 on the cartridge frame 9, so that the tubular lip 21 pushes the circumferential projection 19 on the extension tube 4 elastically deforming out of the circumferential groove 16 on the cartridge frame 9, so that the circumferential groove 16 on the cartridge frame 9 and the circumferential projection 19 on the extension tube 4, which are locked together by the axial snap connection, are separated from each other. During operation, the circumferential projection 19 on the extension tube 4 is elastically deformed to give an audible indication that the axially snap connection between the cartridge housing 9 and the extension tube 4 has been altered.
As shown in fig. 12 to 17, in the quick assembly and disassembly structure between the anvil pull rod 14 in the extension tube 4 and the anvil extension rod 13 in the anvil assembly 3, the anvil pull rod 14 in the extension tube 4 and the anvil extension rod 13 in the anvil assembly 3 form a snap connection assembly 22. The anvil pull rod 14 is provided with a circumferential groove 23 and a conical inclined surface 24. The anvil extension bar 13 has a circumferential projection 25 and a tubular lip 26. The tubular lip 26 is fixedly mounted to the anvil extension bar 13. The circumferential groove 23 on the anvil pull rod 14 and the circumferential projection 25 on the anvil pull rod 13 constitute an axial snap connection in the snap connection assembly 22.
After the circumferential projection 25 on the anvil rod 13 elastically deforms into the circumferential groove 23 on the anvil rod 14, the circumferential groove 23 on the anvil rod 14 and the circumferential projection 25 on the anvil rod 13 are locked together by the axial snap connection, preventing the anvil rod 14 from moving axially relative to the anvil rod 13, and simultaneously, the conical inclined surface 24 on the anvil rod 14 and the tubular lip 26 on the anvil rod 13 are drawn together. When pinching the tubular lip 26 on anvil bar 13, tubular lip 26 moves along conical ramp 24 on anvil bar 14, such that tubular lip 26 pushes circumferential projection 25 on anvil bar 13 to elastically deform out of circumferential groove 23 on anvil bar 14, causing circumferential groove 23 on anvil bar 14 and circumferential projection 25 on anvil bar 13, which are locked together by the axial snap connection, to separate from each other. During operation, the circumferential projection 25 on the anvil extension bar 13 is elastically deformed to give audible indications that the axial snap connection between the anvil extension bar 13 and the anvil extension bar 14 has been altered.
According to the above detailed description, the quick assembly and disassembly structure of the actuating head of the surgical circular stapler of the present invention can achieve the following technical effects:
the quick assembly and disassembly structure of the actuating head of the surgical circular anastomat can prevent the nail bin frame from rotating in the extension tube after the axial lug on the nail bin frame is inserted into the axial groove on the extension tube; after the circumferential projection on the extension tube elastically deforms into the circumferential groove on the nail bin frame, axial buckling connection is formed, so that the nail bin frame can be prevented from moving along the axial direction relative to the extension tube, and simultaneously, the conical inclined surface on the nail bin frame and the tubular lip on the extension tube are mutually closed; when the tubular lip on the extension tube is pinched, the tubular lip pushes the circumferential protruding block on the extension tube to elastically deform and withdraw from the circumferential groove on the nail cartridge frame, so that the circumferential groove on the nail cartridge frame and the circumferential protruding block on the extension tube which are connected and locked together by the axial buckle are mutually separated. During operation, the circumferential protruding blocks on the extension tube elastically deform to give out an audible prompt, and the axial buckling connection state between the nail bin frame and the extension tube is changed. The quick assembly and disassembly structure of the actuating head of the surgical circular anastomat achieves the aim of quickly assembling and disassembling the nail bin assembly, so that the surgical circular anastomat is safer and more convenient to use and has lower use cost.
The quick assembly and disassembly structure of the actuating head of the surgical circular anastomat realizes that after the circumferential protruding blocks on the nail anvil pull rod elastically deform into the circumferential grooves on the nail anvil pull rod, axial buckling connection is formed to prevent the nail anvil pull rod from moving along the axial direction relative to the nail anvil pull rod, and simultaneously, the conical inclined surface on the nail anvil pull rod and the tubular lip on the nail anvil pull rod are mutually closed; when the tubular lip on the nail anvil connecting rod is pinched, the tubular lip pushes the circumferential protruding block on the nail anvil connecting rod to elastically deform and withdraw from the circumferential groove on the nail anvil connecting rod, so that the circumferential groove on the nail anvil connecting rod and the circumferential protruding block on the nail anvil connecting rod which are connected and locked together by the axial buckle are mutually separated. During operation, the circumferential protruding blocks on the pin anvil connecting rod elastically deform to give out sound prompts, and the axial buckling connection state between the pin anvil connecting rod and the pin anvil connecting rod is changed. The quick assembly and disassembly structure of the actuating head of the surgical circular anastomat achieves the aim of quickly assembling and disassembling the nail anvil assembly, so that the surgical circular anastomat is safer and more convenient to use and has lower use cost.
It can thus be seen that the objects set forth above, among those shown by the preceding description, are efficiently attained. What has been described is merely a representative and preferred embodiment of the present invention, and certain changes may be made in the above constructions without departing from the spirit or scope of the invention. The invention is not limited or restricted to the specific details set forth herein, but is intended to retain any modifications or adaptations that may be apparent to those of ordinary skill in the art, as set forth in the definitions of the claims.
Claims (8)
1. The quick assembly and disassembly structure of the actuating head of the surgical circular anastomat comprises a nail bin assembly and a nail anvil assembly, wherein the actuating head is arranged on an extension tube of the surgical circular anastomat;
the nail bin assembly comprises a nail bin, a anastomat, a cutting knife, a nail pushing block and a nail bin frame, wherein the nail bin is fixedly connected with the nail bin frame, the anastomat, the cutting knife and the nail pushing block are arranged in the nail bin and the nail bin frame, the nail pushing block pushes the anastomat and the cutting knife to move in the nail bin, the nail bin frame is connected with the extension tube in the surgical circular anastomat, and the nail pushing block is connected with a firing rod in the extension tube in the surgical circular anastomat;
the nail anvil assembly comprises a nail anvil, a knife anvil and a nail anvil extension rod, wherein the nail anvil, the knife anvil and the nail anvil extension rod are connected together, and the nail anvil extension rod is connected with a nail anvil pull rod in an extension tube in the surgical circular anastomat;
the method is characterized in that: the quick assembly and disassembly structure of the actuating head of the surgical circular anastomat comprises a conical inclined surface, a tubular lip and a buckle connecting assembly, wherein the buckle connecting assembly consists of a first part and a second part, the conical inclined surface is arranged on the first part of the buckle connecting assembly, and the tubular lip is arranged on the second part of the buckle connecting assembly; when the first part and the second part are connected together, the first part and the second part are locked together by the buckle connecting assembly to prevent the first part from moving relative to the second part along the axial direction, and simultaneously, the conical inclined surface on the first part and the tubular lip on the second part are mutually closed; when the tubular lip on the second member is pinched flat, the tubular lip moves along the conical ramp on the first member so that the tubular lip pushes the first and second members, which are locked together by the snap connection assembly, apart from each other.
2. The quick assembly and disassembly structure of the actuation head of a surgical circular stapler according to claim 1, wherein said first member has a circumferential groove and said second member has a circumferential projection, said circumferential groove on said first member and said circumferential projection on said second member forming an axial snap connection in said snap connection assembly; when the first part and the second part are connected together, the circumferential groove on the first part and the circumferential projection on the second part are locked together by the axial buckle connection to prevent the first part from moving relative to the second part along the axial direction, and simultaneously, the conical inclined surface on the first part and the tubular lip on the second part are mutually closed; when the tubular lip on the second member is pinched flat, the tubular lip moves along the conical ramp on the first member so that the tubular lip pushes the circumferential groove on the first member and the circumferential projection on the second member, which are locked together by the axial snap, apart from each other.
3. The quick assembly and disassembly structure of the actuating head of a surgical circular stapler according to claim 2, wherein said first member has an axial projection thereon, said second member has an axial recess thereon, said axial projection on said first member and said axial recess on said second member forming a circumferential positioning connection in said snap connection assembly; the first member is prevented from rotating within the second member when the axial projection on the first member is inserted into the axial recess on the second member.
4. The quick assembly and disassembly structure of an actuation head of a surgical circular stapler of claim 1, wherein a first component of the snap connection assembly is a cartridge bay of the cartridge assembly and a second component of the snap connection assembly is an extension tube of the surgical circular stapler; when the nail bin frame and the extension pipe are connected together, the nail bin frame and the extension pipe are locked together by the buckle connecting component to prevent the nail bin frame from moving axially relative to the extension pipe, and simultaneously, the conical inclined surface on the nail bin frame and the tubular lip on the extension pipe are mutually closed; when the tubular lip on the extension tube is pinched flat, the tubular lip moves along the conical ramp on the cartridge frame, so that the tubular lip pushes the cartridge frame and extension tube, which are locked together by the snap connection assembly, apart from each other.
5. The quick assembly and disassembly structure of an actuation head of a surgical circular stapler of claim 4, wherein a circumferential groove is formed on a cartridge holder in the cartridge assembly, a circumferential projection is formed on the extension tube, and the circumferential groove on the cartridge holder and the circumferential projection on the extension tube form an axial snap connection in the snap connection assembly; after the circumferential protruding blocks on the extension pipe elastically deform into the circumferential grooves on the nail bin frame, the circumferential grooves on the nail bin frame and the circumferential protruding blocks on the extension pipe are connected and locked together by the axial buckles to prevent the nail bin frame from moving along the axial direction relative to the extension pipe, and simultaneously, the conical inclined surfaces on the nail bin frame and the tubular lip edges on the extension pipe are mutually closed; when the tubular lip on the extension tube is pinched flat, the tubular lip moves along the conical incline on the cartridge frame, so that the tubular lip pushes the circumferential projection on the extension tube to elastically deform out of the circumferential groove on the cartridge frame, and the circumferential groove on the cartridge frame and the circumferential projection on the extension tube which are locked together by the axial snap connection are separated from each other.
6. The quick assembly and disassembly structure of an actuation head of a surgical circular stapler of claim 4, wherein a cartridge holder in the cartridge assembly has an axial projection thereon, the extension tube has an axial groove thereon, and the axial projection on the cartridge holder and the axial groove on the extension tube form a circumferential positioning connection in the snap connection assembly; when the axial lug on the nail bin frame is inserted into the axial groove on the extension tube, the nail bin frame is prevented from rotating in the extension tube.
7. The quick assembly and disassembly structure of an actuation head of a surgical circular stapler of claim 1, wherein a first component of the snap-fit connection assembly is an anvil pull rod within the extension tube and a second component of the snap-fit connection assembly is an anvil pull rod within the anvil assembly; when the nail anvil pull rod and the nail anvil connecting rod are connected together, the nail anvil pull rod and the nail anvil connecting rod are locked together by the buckle connecting assembly to prevent the nail anvil pull rod from moving axially relative to the nail anvil connecting rod, and simultaneously, the conical inclined surface on the nail anvil pull rod and the tubular lip on the nail anvil connecting rod are mutually close; when the tubular lip on the anvil extension rod is pinched, the tubular lip moves along the conical inclined surface on the anvil pull rod, so that the tubular lip pushes the anvil pull rod and the anvil extension rod locked together by the buckle connection assembly to be separated from each other.
8. The quick assembly and disassembly structure of an actuating head of a surgical circular stapler of claim 7, wherein a circumferential groove is formed on an anvil pull rod in the extension tube, a circumferential projection is formed on an anvil pull rod in the anvil assembly, and the circumferential groove on the anvil pull rod and the circumferential projection on the anvil pull rod form an axial snap connection in the snap connection assembly; after the circumferential protruding blocks on the nail anvil connecting rod elastically deform into the circumferential grooves on the nail anvil connecting rod, the circumferential grooves on the nail anvil connecting rod and the circumferential protruding blocks on the nail anvil connecting rod are connected and locked together by the axial buckle to prevent the nail anvil connecting rod from moving along the axial direction relative to the nail anvil connecting rod, and simultaneously, the conical inclined plane on the nail anvil connecting rod and the tubular lip on the nail anvil connecting rod are mutually closed; when the tubular lip on the anvil connecting rod is pinched, the tubular lip moves along the conical inclined plane on the anvil connecting rod, so that the circumferential projection on the anvil connecting rod is pushed by the tubular lip to elastically deform and withdraw from the circumferential groove on the anvil connecting rod, and the circumferential groove on the anvil connecting rod and the circumferential projection on the anvil connecting rod which are connected and locked together by the axial buckle are separated from each other.
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| EP3675748A4 (en) * | 2017-09-01 | 2021-01-20 | Covidien LP | Circular stapling device with position ribs |
| CN110604604A (en) * | 2018-06-14 | 2019-12-24 | 上海逸思医疗科技有限公司 | Round anastomat under laparoscope |
| CN109199463A (en) * | 2018-10-16 | 2019-01-15 | 上海导向医疗系统有限公司 | A kind of detachable sample collecting device component, sample collecting device end cap locking device and biopsy rotary cutting apparatus |
| CN109124696B (en) * | 2018-10-16 | 2023-11-28 | 上海导向医疗系统有限公司 | Detachable sample collector assembly and biopsy rotary cutting device |
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