Disassembly tool for a surgical instrument and surgical instrument

Abstract

The utility model provides a kind of dismounting tool of surgical instrument, surgical instrument includes nail seat, separating piece, separating piece is located at the distal end of nail seat, with nail seat detachable connection, dismounting tool includes main body, main body is equipped with holding portion, its head is equipped with the installation slot of accommodating separating piece, installation slot inside is equipped with elastic buckling piece, elastic buckling piece limits the position of separating piece in installation slot;When dismounting, external force is applied to holding portion, under the action of external force, installation slot acts on separating piece so that separating piece moves along dismounting direction, the engagement or separation of separating piece and nail seat is realized.The utility model structure is simple, and dismounting tool is convenient and fast for the dismounting of separating piece, improves dismounting efficiency.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a tool for disassembling and assembling surgical instruments. This utility model also relates to a surgical instrument. Background Technology

[0002] Surgical staplers are a commonly used surgical instrument in medicine that replaces manual suturing. The main working principle is to clamp the jaws of the end effector at a specific position near the lesion and then cut and suture the tissue using the end effector.

[0003] However, in actual surgical scenarios, some surgical sites are quite unique, making it difficult for the end effector to reach the tissue to be cut and thus failing to meet surgical requirements. For example, in thoracic surgery, the end effector of the stapler needs to navigate through small spaces or tubular tissues, requiring a beak-shaped separator at the end effector to separate and free the tubular tissues. In addition, in some surgical scenarios, the separator may interfere with the stapler's cutting and suturing of other tissues, necessitating the removal of the separator.

[0004] Therefore, this disassembly device needs to be installed or removed in different scenarios during surgery. However, due to its small size and curved surface, the area requiring force during installation and removal is small, making it difficult to disassemble. Furthermore, tissue fluid and blood may adhere to the instruments during surgery, causing slippage and increasing the difficulty of removing the disassembly device. Direct contact between the human body and instruments containing tissue fluid or blood also poses a risk to medical personnel. Utility Model Content

[0005] The present invention aims to provide a tool for disassembling and assembling surgical instruments to overcome the shortcomings of the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a surgical instrument disassembly and assembly tool, wherein the surgical instrument includes an anvil and a separating component, the separating component is disposed at the distal end of the anvil and is detachably connected to the anvil, the disassembly and assembly tool includes a main body, the main body is provided with a gripping part, the head of which is provided with an installation groove for accommodating the separating component, the installation groove is an open groove, and an elastic fastening component is provided inside the installation groove, the elastic fastening component limiting the position of the separating component in the installation groove; during disassembly and assembly, an external force is applied to the gripping part, under the action of the external force, the installation groove acts on the separating component, causing the separating component to move along the disassembly and assembly direction, so that the separating component engages or disengages from the anvil.

[0007] Furthermore, in the above-mentioned surgical instrument assembly and disassembly tool, the mounting groove is provided with a guide groove on the outer side near the opening direction, and a limiting groove is provided on the inner side of the guide groove.

[0008] Furthermore, in the aforementioned surgical instrument assembly and disassembly tool, the cross-section of the guide groove is adapted to the cross-section of the separator and is clearance-fitted with the separator.

[0009] Furthermore, in the aforementioned surgical instrument disassembly and assembly tool, the shape of the limiting groove is adapted to the shape of the separating component, and the elastic fastener cooperates with the limiting groove to limit the position of the separating component in the disassembly and assembly tool.

[0010] Furthermore, in the aforementioned surgical instrument disassembly and assembly tool, the limiting groove is provided with at least one contact part that abuts against the separating member. During disassembly and assembly, external force is applied to the position where the separating member abuts against the contact part, so that the separating member engages with or separates from the anvil.

[0011] Furthermore, in the above-mentioned surgical instrument disassembly and assembly tool, the contact part includes a first contact part and a second contact part. The first contact part is an arc-shaped surface adapted to the upper surface of the separating component, and the second contact part is an arc-shaped surface adapted to the lower surface of the separating component. The second contact part is located below the first contact part and is set at an angle to the first contact part.

[0012] Furthermore, in the aforementioned surgical instrument assembly and disassembly tool, the mounting groove also includes a guide portion, which is adapted to the shape of the anvil, and the anvil and guide portion slide together during assembly and disassembly.

[0013] Furthermore, in the aforementioned surgical instrument assembly and disassembly tool, the elastic fastener is located within the limiting groove and is integrally formed with the main body.

[0014] Furthermore, in the aforementioned surgical instrument assembly and disassembly tool, the elastic fastener includes a spring and a snap-fit ​​portion located at the end of the spring.

[0015] Furthermore, in the aforementioned surgical instrument assembly and disassembly tool, the elastic fastener further includes a groove located in the middle of the lower side of the limiting groove, one end of the spring piece is located on one side of the groove and extends toward the opening of the mounting groove, and the spring piece is located inside the groove.

[0016] Furthermore, in the aforementioned surgical instrument assembly and disassembly tool, the latching part is a protrusion on the top surface of the spring clip, which cooperates with the outer side of the lower end of the separator to limit the position of the separator.

[0017] Furthermore, in the above-mentioned surgical instrument assembly and disassembly tool, the side of the boss near the separating member is a guide slope, and the side away from the separating member is an inlet slope, wherein the inlet slope is less than the guide slope.

[0018] Furthermore, in the aforementioned surgical instrument assembly and disassembly tool, the height of the latching part is 0.4-0.8 mm.

[0019] Furthermore, in the aforementioned surgical instrument disassembly and assembly tool, the main body is a cylindrical component, and the axial direction of the main body is parallel or perpendicular to the disassembly and assembly direction of the separating component.

[0020] Furthermore, in the aforementioned surgical instrument assembly and disassembly tool, the axial direction of the main body is parallel to the assembly and disassembly direction of the separating component, and the opening of the mounting groove is located on a side of the main body that is parallel to the main body axis.

[0021] Furthermore, in the aforementioned surgical instrument assembly and disassembly tool, the axial direction of the main body is perpendicular to the assembly and disassembly direction of the separating component, and the opening of the mounting groove is located on the end face of the main body head that is perpendicular to the main body axis.

[0022] This utility model also provides a surgical instrument, including the above-mentioned disassembly and assembly tool, and further including an end effector and a separating component. The end effector includes an anvil, and the distal end of the anvil is provided with a separating component detachably connected thereto. The disassembly and assembly tool is movably connected to the separating component and is used to place or disassemble the separating component. Under the action of the disassembly and assembly tool, the separating component can move along the axial direction of the anvil, so that the separating component engages or separates from the anvil, thereby realizing the installation or disassembly of the separating component.

[0023] Furthermore, in the aforementioned surgical instrument, the distal end of the anvil is provided with an insertion groove extending along the axis of the anvil, and the separating member includes a separating part and a connecting part. The separating part is used to contact tissue, and the connecting part is located at the proximal end of the separating part. The connecting part is inserted into the insertion groove so that the separating member engages with the anvil.

[0024] The joint includes a connector strip and an elastic element. The connector strip is located in the middle of the near end of the separation part and extends along the direction of the connector groove. The upper and lower sides of the connector groove are provided with sliding grooves that cooperate with the connector strip. The elastic element is a U-shaped spring sheet arranged around the connector strip. The U-shaped spring sheet is provided with an elastic protrusion. The connector groove is provided with a slot that cooperates with the elastic protrusion.

[0025] Furthermore, in the aforementioned surgical instrument, the U-shaped open end of the elastic element is fixedly connected to the insertion strip, an clearance space is provided between the elastic element and the insertion strip, and the insertion strip also has recesses on both sides corresponding to the elastic protrusions.

[0026] Compared with the prior art, the beneficial effects of this utility model are: the disassembly and assembly tool of this utility model has a simple structure, and the installation and removal of the separable parts are realized by the cooperation of the limiting groove and the elastic fastener, which can avoid slippage, reduce the force required for disassembly and assembly, and make disassembly and assembly convenient and quick, thus improving the efficiency of disassembly and assembly; in addition, the separable parts can be stored in the disassembly and assembly tool before use, which can further improve the installation speed. The disassembly and assembly tool can also be used as a storage device for packaging and transportation. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the surgical instrument of this utility model;

[0029] Figure 2 This is a schematic diagram of the disassembly and assembly tool for surgical instruments according to Embodiment 1 of this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the present invention, in which the detachable component is placed inside the disassembly and assembly tool. Figure 1 ;

[0031] Figure 4 This is a schematic diagram of the structure of the present invention, in which the detachable component is placed inside the disassembly and assembly tool. Figure 2 ;

[0032] Figure 5 for Figure 4 A partial cross-sectional view of section A;

[0033] Figure 6 for Figure 4 A schematic diagram of a partial cross-section of section B;

[0034] Figure 7 for Figure 4 A schematic diagram of a half-section;

[0035] Figure 8 This is a schematic diagram of the structure of the separator installed on the anvil in Embodiment 1 of this utility model;

[0036] Figure 9 for Figure 8 A schematic diagram of a half-section;

[0037] Figure 10 for Figure 8 A schematic diagram of the C-section;

[0038] Figure 11 for Figure 8 Schematic diagram of section D;

[0039] Figure 12 This is a schematic diagram of the disassembly and assembly tool for the surgical instruments according to Embodiment 2 of this utility model;

[0040] Figure 13 This is a schematic diagram of the structure of Embodiment 2 of the present invention, in which the detachable component is placed inside the disassembly and assembly tool. Figure 1 ;

[0041] Figure 14 This is a schematic diagram of the structure of Embodiment 2 of the present invention, in which the detachable component is placed inside the disassembly and assembly tool. Figure 2 ;

[0042] Figure 15 for Figure 14 A partial cross-sectional view of section E;

[0043] Figure 16 This is a schematic diagram of the structure of the separator installed on the anvil in Embodiment 2 of this utility model;

[0044] Figure 17 for Figure 16 Schematic diagram of F-section;

[0045] Figure 18 for Figure 16 A schematic diagram of a partial cross-section of G;

[0046] Figure 19 This is an exploded view of the surgical instrument of this utility model;

[0047] Figure 20 This is a top view of the detachable component of the surgical instrument of this utility model;

[0048] Figure 21 This is a schematic diagram showing the combination of the separating component and the anvil of the surgical instrument of this utility model.

[0049] In the diagram: 1. End effector; 11. Anchor seat; 111. Insertion slot; 112. Slide groove; 113. Locking slot;

[0050] 2. Separating component; 21. Separating part; 22. Joining part; 221. Inserting strip; 2211. Recess; 222. Elastic component; 2221. Elastic protrusion; 223. Clearance space;

[0051] 3. Assembly / disassembly tools; 31. Main body; 32. Mounting groove; 321. Guide groove; 322. Limiting groove; 3221. Contact surface one; 3222. Contact surface two; 323. Guide part; 324. Groove; 33. Elastic fastener; 331. Spring piece; 332. Buckle part; 3321. Outgoing inclined surface; 3322. Incoming inclined surface. Detailed Implementation

[0052] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0053] In this invention, when operating surgical instruments, the end closer to the operator is the proximal end, and the end farther from the operator is the distal end.

[0054] Example 1

[0055] like Figure 1-11 As shown, a surgical instrument disassembly and assembly tool is provided. The surgical instrument includes an anvil 11 and a separating member 2. The separating member 2 is located at the distal end of the anvil 11 and is detachably connected to the anvil 11. The disassembly and assembly tool 3 includes a main body 31. The main body 31 is provided with a gripping part, and its head is provided with an installation groove 32 for accommodating the separating member 2. The installation groove 32 is an open groove, and an elastic fastener 33 is provided inside the installation groove 32. The elastic fastener 33 limits the position of the separating member 2 in the installation groove 32. When disassembling or assembling, an external force is applied to the gripping part. Under the action of the external force, the installation groove 32 acts on the separating member 2, causing the separating member 2 to move in the disassembly or assembly direction, so that the separating member 2 engages or disassembles with the anvil 11, thereby realizing the installation or disassembly of the separating member.

[0056] like Figure 1 As shown, the surgical instrument of this utility model is a stapler, which also includes a drive assembly, a cannula assembly and a handle assembly. The drive assembly, cannula assembly and handle assembly are not the technical solutions to be protected by this patent, and will not be described in detail here.

[0057] The main body 31 is a cylindrical component with rounded corners on its outer sides. The axial direction of the main body 31 is parallel to the disassembly / assembly direction of the separating component 2. The opening of the mounting groove 32 is located on a side of the main body 31 that is parallel to the axial direction of the main body 31. In this embodiment, as shown... Figure 2 The arrows indicate the disassembly / assembly direction, which is the axial direction of the anvil 11. During disassembly / assembly, the main body 31 and the anvil 11 are on the same straight line. In addition, the main body 31 is injection molded, which is simple to manufacture and has low cost.

[0058] like Figure 2-7 As shown, along the depth direction of the mounting groove, the outer side of the mounting groove 32 near the opening direction is a guide groove 321, and the inner side is a limiting groove 322; the cross section of the guide groove 321 is adapted to the cross section of the separator 2 and has a clearance fit with the separator 2, which facilitates the insertion of the separator into the mounting groove; the shape of the limiting groove 322 is adapted to the shape of the separator 2, and the elastic fastener 33 cooperates with the limiting groove 322 to limit the position of the separator 2 in the disassembly and assembly tool.

[0059] In the above structure, the limiting groove 322 is provided with at least one contact part that abuts against the separating member 2. When disassembling or assembling, external force is applied to the position where the separating member 2 abuts against the contact part so that the separating member 2 can engage or disassemble with the anvil seat 11.

[0060] The contact portion includes a first contact portion 3221 and a second contact portion 3222. The first contact portion 3221 is an arc-shaped surface adapted to the upper surface of the separating member 2, and the second contact portion 3222 is an arc-shaped surface adapted to the lower surface of the separating member 2, located below the first contact portion 3221 and set at an angle to the first contact portion 3221. Specifically, when disassembling the separating member 2, a force is applied backward in the direction away from the anvil seat 11, and the first contact portion 3221 abuts against the separating member 2. The external force acts on the surface of the separating member 2 abutting the first contact portion 3221, causing the separating member 2 to separate from the anvil seat 11. When installing the separating member 2, a force is applied forward in the direction close to the anvil seat 11, and the second contact portion 3222 abuts against the separating member 1. The external force acts on the surface of the separating member 2 abutting the second contact portion 3222, causing the separating member 2 to engage with the anvil seat 11.

[0061] To improve the accuracy of disassembly and assembly of separable components, such as Figure 4-9 As shown in Figure 11, the mounting groove 32 also includes a guide portion 323. The guide portion 323 is arranged along the disassembly and assembly direction of the separator 2 and is adapted to the shape of the anvil seat. During disassembly and assembly, the anvil seat 11 and the guide portion 323 slide together and have a guiding function.

[0062] like Figure 3-10 As shown, the elastic fastener 33 is disposed on the limiting groove 322 and integrally formed with the main body 31. The elastic fastener 33 includes a spring piece 331 and a latching part 332 disposed at the end of the spring piece 331. The lower side of the limiting groove 322 is provided with a groove 324 in the middle. The spring piece 331 is disposed on one side of the groove 324 and extends towards the opening of the mounting groove 32. The spring piece 331 is located in the groove 324. The top surface of the spring piece 331 is flush with the lower side of the limiting groove 322. The latching part 332 is a boss protruding from the top surface of the spring piece 331, which cooperates with the outer side of the lower end of the separator 2 to limit the position of the separator 2.

[0063] In the above structure, the side of the boss near the separator 2 is a guide slope 3321, and the side away from the separator 2 is provided with an inlet slope 3322. The slope of the guide slope 3321 is adapted to the slope of the outer side of the separator 2, and the slope of the guide slope 3321 should be slightly smaller than the slope of the outer side of the separator 2. In this embodiment, the slope of the guide slope 3321 is about 1° smaller than the slope of the outer side of the separator 2. The guide slope can engage the separator 2, preventing the separator from falling out of the disassembly and assembly tools, improving the convenience of disassembly and assembly. Under the action of external force, the spring clip deforms, and the separator can be disassembled along the guide slope. The slope of the inlet slope 3322 is greater than the slope of the guide slope 3321, which makes it easier to install the separator into the mounting groove.

[0064] The height H of the latching part 332 is 0.4-0.8mm, which ensures that the separating part does not fall out of the disassembly tool and that the separating part can be smoothly separated when it needs to be separated.

[0065] Example 2

[0066] like Figure 1 , 12 As shown in Figure -18, a tool for disassembling and assembling a surgical instrument is disclosed. The surgical instrument includes an anvil 11 and a separating member 2. The separating member 2 is located at the distal end of the anvil 11 and is detachably connected to the anvil 11. The tool 3 includes a main body 31 with a gripping part. The head of the main body 31 has a mounting groove 32 for accommodating the separating member 2. The mounting groove 32 is an open groove, and an elastic fastener 33 is provided inside the mounting groove 32. The elastic fastener 33 limits the position of the separating member 2 within the mounting groove 32. During disassembly and assembly, an external force is applied to the gripping part. Under the action of the external force, the mounting groove 32 acts on the separating member 2, causing the separating member 2 to move along the disassembly and assembly direction, so that the separating member 2 engages or disassembles with the anvil 11, thereby realizing the installation or disassembly of the separating member.

[0067] The main body 31 is a cylindrical component with rounded corners on its outer sides. The axial direction of the main body 31 is perpendicular to the disassembly / assembly direction of the separating component 2. The opening of the mounting groove 32 is located on the end face of the head of the main body 31, which is perpendicular to the axial direction of the main body 31. Furthermore, in this embodiment, the groove 324 of the elastic fastener 33 is a through groove.

[0068] In this embodiment, as Figure 12 The arrows indicate the disassembly / assembly direction, which is the axial direction of the anvil seat 11. During disassembly / assembly, the main body 31 is positioned perpendicular to the anvil seat 11. Furthermore, the main body 31 is injection molded, making it simple to manufacture and low in cost.

[0069] like Figure 13-16 As shown, along the depth direction of the mounting groove, the outer side of the mounting groove 32 near the opening direction is a guide groove 321, and the inner side is a limiting groove 322; the cross section of the guide groove 321 is adapted to the cross section of the separator 2 and has a clearance fit with the separator 2, which facilitates the insertion of the separator into the mounting groove; the shape of the limiting groove 322 is adapted to the shape of the separator 2, and the elastic fastener 33 cooperates with the limiting groove 322 to limit the position of the separator 2 in the disassembly and assembly tool.

[0070] In the above structure, the limiting groove 322 is provided with at least one contact part that abuts against the separating member 2. When disassembling or assembling, external force is applied to the position where the separating member 2 abuts against the contact part so that the separating member 2 can engage or disassemble with the anvil seat 11.

[0071] The contact portion includes a first contact portion 3221 and a second contact portion 3222. The first contact portion 3221 is an arc-shaped surface adapted to the upper surface of the separating member 2, and the second contact portion 3222 is an arc-shaped surface adapted to the lower surface of the separating member 2, located below the first contact portion 3221 and set at an angle to the first contact portion 3221. Specifically, when disassembling the separating member 2, a force is applied backward in the direction away from the anvil seat 11, and the first contact portion 3221 abuts against the separating member 2. The external force acts on the surface of the separating member 2 abutting the first contact portion 3221, causing the separating member 2 to separate from the anvil seat 11. When installing the separating member 2, a force is applied forward in the direction close to the anvil seat 11, and the second contact portion 3222 abuts against the separating member 1. The external force acts on the surface of the separating member 2 abutting the second contact portion 3222, causing the separating member 2 to engage with the anvil seat 11.

[0072] To improve the accuracy of disassembly and assembly of separable components, such as Figure 12-13 As shown in Figures 16 and 18, the mounting groove 32 also includes a guide portion 323. The guide portion 323 is arranged along the disassembly and assembly direction of the separator 2 and is adapted to the shape of the anvil seat 11. During disassembly and assembly, the anvil seat 11 and the guide portion 323 slide together and have a guiding function.

[0073] like Figure 12-17 As shown, the elastic fastener 33 is disposed on the limiting groove 322 and integrally formed with the main body 31. The elastic fastener 33 includes a spring piece 331 and a latching part 332 disposed at the end of the spring piece 331. The lower side of the limiting groove 322 is provided with a groove 324 in the middle. The spring piece 331 is disposed on one side of the groove 324 and extends towards the opening of the mounting groove 32. The spring piece 331 is located in the groove 324. The top surface of the spring piece 331 is flush with the lower side of the limiting groove 322. The latching part 332 is a boss protruding from the top surface of the spring piece 331, which cooperates with the outer side of the lower end of the separator 2 to limit the position of the separator 2.

[0074] In the above structure, the side of the boss near the separator 2 is a guide slope 3321, and the side away from the separator 2 is provided with an inlet slope 3322. The slope of the guide slope 3321 is adapted to the slope of the outer side of the separator 2, and the slope of the guide slope 3321 should be slightly smaller than the slope of the outer side of the separator 2. In this embodiment, the slope of the guide slope 3321 is about 1° smaller than the slope of the outer side of the separator 2. The guide slope can engage the separator 2, preventing the separator from falling out of the disassembly and assembly tools, improving the convenience of disassembly and assembly. Under the action of external force, the spring clip deforms, and the separator can be disassembled along the guide slope. The slope of the inlet slope 3322 is greater than the slope of the guide slope 3321, which makes it easier to install the separator into the mounting groove.

[0075] The height H of the latching part 332 is 0.4-0.8mm, which ensures that the separating part does not fall out of the disassembly tool and that the separating part can be smoothly separated when it needs to be separated.

[0076] The working principle of the disassembly and assembly tool of this utility model is as follows: During installation, the separating part 2 is placed in the mounting groove 32, and the disassembly and assembly tool 3 moves close to the anti-pin seat 11, with the head of the anti-pin seat 11 aligned with the guide part 323; then it is pushed forward along the axis of the anti-pin seat 11, and the anti-pin seat 11 is inserted into the guide part 232. Continue to push forward until it can no longer be pushed, at which point the elastic protrusion 2221 is inserted into the slot 113; then the disassembly and assembly tool 3 is pulled to the side in the opposite direction of the opening of the mounting groove 32, and the separating part 2 is disengaged from the snap-fit ​​part of the elastic snap-fit ​​part 33, so that the disassembly and assembly tool 3 is disengaged from the separating part 2, and the installation of the separating part is completed.

[0077] During disassembly, the disassembly tool 3 is moved close to the anvil seat 11, the separating part 2 is aligned with the opening end of the mounting groove 32, the separating part 2 is inserted into the mounting groove 32 from the side of the disassembly tool 3, and then pulled backward along the axis of the anvil seat 11 until the separating part 2 is separated from the anvil seat 11, thus completing the disassembly.

[0078] In summary, the disassembly and assembly tool of this utility model has a simple structure. It uses the cooperation of the limiting groove and the elastic fastener to realize the installation and removal of the separable parts, which can avoid slippage, reduce the force required for disassembly and assembly, improve the convenience of disassembly and assembly, and improve the efficiency of disassembly and assembly. Moreover, before the separable parts are used, they can be placed in the disassembly and assembly tool to further improve the installation speed. The disassembly and assembly tool can also be used as a storage device for packaging and transportation.

[0079] Example 3

[0080] like Figure 1-21 As shown, this utility model also provides a surgical instrument, including the above-mentioned disassembly and assembly tool 3, and further including an end effector 1 and a separating member 2. The end effector 1 includes an anvil 11, and the distal end of the anvil 11 is provided with a separating member 2 detachably connected thereto. The disassembly and assembly tool 3 is movably connected to the separating member 2. Under the action of the disassembly and assembly tool 3, the separating member can move along the axial direction of the anvil, so that the separating member 2 engages or disengages from the anvil 11.

[0081] like Figure 19-21 As shown, the distal end of the anvil 11 is provided with an insertion groove 111 extending along the axis of the anvil 11. The separating member 2 includes a separating part 21 and a connecting part 22. The separating part 21 has an eagle beak-shaped structure and is a functional end for assisting surgery and for contacting tissue. The connecting part 22 is located at the proximal end of the separating part 21 and is inserted into the insertion groove 111 to allow the separating member 2 to engage with the anvil 11.

[0082] When the separating component 2 is placed in the mounting groove 32 of the disassembly and assembly tool 3, the separating part 21 is adapted to the limiting groove 322, and the connecting part 22 is located in the guide part 323. Through the cooperation of the limiting groove 322 and the elastic fastener 33, the separating part 21 is limited in the limiting groove 322, thereby confining the separating component 2 in the mounting groove 32. The disassembly and assembly tool can not only be used as a tool for disassembly and assembly, but also can install or remove the separating component according to different scenarios in the operation, saving costs; and before the separating component is used, the separating component can be stored in the disassembly and assembly tool, which can further improve the installation speed. The disassembly and assembly tool can also be used as a storage device for packaging and transportation.

[0083] The joint 22 includes a connector strip 221 and an elastic element 222. The connector strip 221 is located near the middle of the separation part 21 and extends along the direction of the connector groove 111. The connector groove 111 has sliding grooves 112 on its upper and lower sides that cooperate with the connector strip 221. The sliding grooves 112 serve to limit and guide, allowing the joint 22 to be inserted into the connector groove 111 more accurately and stably. The elastic element 222 is a U-shaped spring sheet surrounding the connector strip 221. The U-shaped spring sheet has an elastic protrusion 2221. The connector groove 111 has a locking groove 113 that cooperates with the elastic protrusion 2221. Under the action of external force, the joint 22 moves along the connector groove 111. During the movement, the elastic element 222 is elastically deformed under force, allowing the elastic protrusion 2221 to be engaged in the locking groove 113 or separated from the locking groove 113.

[0084] In the above structure, the U-shaped open end of the elastic member 222 is fixedly connected to the insertion strip 221. A clearance space 223 is provided between the elastic member 222 and the insertion strip 221, and recesses 2211 corresponding to the elastic protrusions 2221 are also provided on both sides of the insertion strip 221. The elastic protrusions 2221 deform toward the clearance space 223 due to the obstruction of the inner wall of the insertion groove 111, and the recesses 2211 can increase the deformation accommodating space, so that the joint 22 and the anvil 11 can be better connected, and the connection is stable and reliable.

[0085] It should be noted that in this embodiment, since the joint and the insertion groove are connected firmly and securely, avoiding shaking, it will not have an adverse effect on subsequent cutting and sewing during use. In other words, it does not need to be disassembled. Therefore, in actual use, after installing the separable part, the user does not need to disassemble the separable part, making it simpler and faster to use.

[0086] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0087] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tool for disassembling and assembling surgical instruments, characterized in that: The surgical instrument includes an anvil (11) and a separator (2). The separator (2) is located at the distal end of the anvil (11) and is detachably connected to the anvil (11). The disassembly and assembly tool (3) includes a body (31). The body (31) is provided with a gripping part, and its head is also provided with an installation groove (32) for accommodating the separator (2). The installation groove (32) is an open groove. An elastic fastener (33) is provided inside the installation groove (32). The elastic fastener (33) limits the position of the separator (2) in the installation groove (32). Under the action of external force, the installation groove (32) acts on the separator (2) to make the separator (2) move along the disassembly and assembly direction.

2. The surgical instrument disassembly and assembly tool according to claim 1, characterized in that: The mounting groove (32) has a guide groove (321) on the outer side near the opening, and a limiting groove (322) is provided on the inner side of the guide groove (321).

3. The surgical instrument disassembly and assembly tool according to claim 2, characterized in that: The cross section of the guide groove (321) is adapted to the cross section of the separator (2) and is clearance-fitted with the separator (2).

4. The surgical instrument disassembly and assembly tool according to claim 2, characterized in that: The shape of the limiting groove (322) is adapted to the shape of the separating part (2), and the elastic fastener (33) cooperates with the limiting groove (322) to limit the position of the separating part (2) in the disassembly and assembly tool.

5. The surgical instrument disassembly and assembly tool according to claim 4, characterized in that: The limiting groove (322) is provided with at least one contact part that abuts against the separating member (2). When disassembling or assembling, external force is applied to the position where the separating member (2) abuts against the contact part so that the separating member (2) can engage or disassemble with the anvil (11).

6. The surgical instrument disassembly and assembly tool according to claim 5, characterized in that: The contact part includes a first contact part (3221) and a second contact part (3222). The first contact part (3221) is an arc-shaped surface adapted to the upper surface of the separating member (2), and the second contact part (3222) is an arc-shaped surface adapted to the lower surface of the separating member (2). The second contact part (3222) is located below the first contact part (3221) and is set at an angle to the first contact part (3221).

7. The surgical instrument disassembly and assembly tool according to claim 2, characterized in that: The mounting groove (32) also includes a guide (323), which is adapted to the shape of the anvil (11). During disassembly and assembly, the anvil (11) and the guide (323) slide together.

8. The surgical instrument disassembly and assembly tool according to claim 2, characterized in that: The elastic fastener (33) is located in the limiting groove (322) and is integrally formed with the main body (31).

9. The surgical instrument disassembly and assembly tool according to claim 8, characterized in that: The elastic fastener (33) includes a spring piece (331) and a snap-fit ​​part (332) located at the end of the spring piece (331).

10. The surgical instrument disassembly and assembly tool according to claim 9, characterized in that: The elastic fastener (33) also includes a groove (324) located in the middle of the lower side of the limiting groove (322). One end of the spring piece (331) is located on one side of the groove (324) and extends toward the opening of the mounting groove (32), and the spring piece (331) is located in the groove (324).

11. The surgical instrument disassembly and assembly tool according to claim 9, characterized in that: The latching part (332) is a protrusion on the top surface of the spring piece (331), which cooperates with the outer side of the lower end of the separator (2) to limit the position of the separator (2).

12. The surgical instrument disassembly and assembly tool according to claim 11, characterized in that: The side of the boss closer to the separator (2) is the outgoing inclined surface (3321), and the side farther away from the separator (2) is the incoming inclined surface (3322). The inclination of the incoming inclined surface (3322) is less than that of the outgoing inclined surface (3321).

13. The surgical instrument disassembly and assembly tool according to claim 9, characterized in that: The height of the buckle part (332) is 0.4-0.8mm.

14. The tool for disassembling and assembling surgical instruments according to any one of claims 1-13, characterized in that: The main body (31) is a cylindrical component, and the axial direction of the main body (31) is parallel or perpendicular to the disassembly and assembly direction of the separating component (2).

15. The surgical instrument disassembly and assembly tool according to claim 14, characterized in that: The axis of the main body (31) is parallel to the disassembly and assembly direction of the separator (2), and the opening of the mounting groove (32) is located on a side of the main body (31) that is parallel to the axis of the main body (31).

16. The surgical instrument disassembly and assembly tool according to claim 14, characterized in that: The axial direction of the main body (31) is perpendicular to the disassembly and assembly direction of the separator (2), and the opening of the mounting groove (32) is located on the end face of the head of the main body (31) perpendicular to the axis of the main body (31).

17. A surgical instrument, characterized in that: The assembly / disassembly tool (3) as described in any one of claims 1 to 16 is further comprising an end effector (1) and a separator (2), wherein the end effector (1) comprises an anti-pin seat (11) and the separator (2) is detachably connected to the distal end of the anti-pin seat (11), and the assembly / disassembly tool (3) is movably connected to the separator (2) for placing or disassembling the separator (2).

18. The surgical instrument according to claim 17, characterized in that: The distal end of the anvil (11) is provided with an insertion groove (111) extending along the axis of the anvil (11). The separating member (2) includes a separating part (21) and a connecting part (22). The separating part (21) is used to contact tissue. The connecting part (22) is located at the proximal end of the separating part (21) and is inserted into the insertion groove (111). The joint (22) includes a plug strip (221) and an elastic element (222). The plug strip (221) is located in the middle of the near end of the separation part (21) and extends along the direction of the plug groove (111). The upper and lower sides of the plug groove (111) are provided with sliding grooves (112) that cooperate with the plug strip (221). The elastic element (222) is a U-shaped spring sheet that surrounds the plug strip (221). The U-shaped spring sheet is provided with an elastic protrusion (2221). The plug groove (111) is provided with a slot (113) that cooperates with the elastic protrusion (2221).

19. The surgical instrument according to claim 18, characterized in that: The U-shaped opening end of the elastic element (222) is fixedly connected to the plug strip (221). There is a clearance space between the elastic element (222) and the plug strip (221), and the plug strip (221) is also provided with recesses (2211) on both sides corresponding to the elastic protrusion (2221).

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