Surgical instrument

Abstract

The utility model relates to a surgical instrument. The surgical instrument is characterized in that a nail abutting seat is provided with an inserting groove; the separation assembly comprises: a body member for contacting tissue; one end of a plug connector is connected to the main body piece, and the plug connector is matched with the plug groove; the elastic piece is connected to the inserting piece, and the elastic piece is stressed to deform in the process of inserting the inserting piece into the inserting groove; wherein the nail abutting seat is further provided with a first clamping piece, the elastic piece is provided with a second clamping piece, and the first clamping piece is matched with the second clamping piece, so that the separating assembly is assembled on the nail abutting seat. The separation assembly of the surgical instrument is simple in structure and convenient and fast to assemble.

Description

Technical Field

[0001] This application relates to the field of surgical instrument technology, and in particular to a surgical instrument. Background Technology

[0002] When performing surgical procedures within the abdominal cavity, the limited operating space restricts the flexibility of instrument manipulation, especially when dealing with areas involving blood vessels. Blood vessels are typically attached to other tissues, and when cutting and suturing them is necessary, the vessels must be detached from these other tissues.

[0003] Connecting a separation component to the distal end of the end effector makes it easier for doctors to detach blood vessels from other tissues.

[0004] However, existing discrete components have complex structures, and plugging and unplugging require specialized tools. Utility Model Content

[0005] In view of this, embodiments of this application provide a surgical instrument to solve at least one problem existing in the prior art.

[0006] In a first aspect, embodiments of this application provide a surgical instrument, comprising:

[0007] The anvil has a insertion groove that extends along a first direction, which is the axial direction of the anvil.

[0008] Separate components, including:

[0009] The main component is used to contact the tissue;

[0010] A connector, one end of which is connected to the main body, the connector being matched with the connector slot;

[0011] An elastic element is connected to the plug-in member, and the elastic element deforms under force during the process of inserting the plug-in member into the plug-in slot.

[0012] The anvil seat is further provided with a first snap-fit ​​member, and the elastic member is provided with a second snap-fit ​​member. The first snap-fit ​​member matches the second snap-fit ​​member so that the separation component is assembled on the anvil seat.

[0013] In conjunction with the first aspect of this application, in an optional embodiment, the anvil is provided with a pair of first snap-fit ​​members, and in a second direction, the pair of first snap-fit ​​members are respectively located on both sides of the insertion slot and are disposed opposite to each other; the elastic member is provided with a pair of second snap-fit ​​members, and the pair of second snap-fit ​​members are respectively located on both sides of the insertion member and are disposed opposite to each other; the second direction is perpendicular to the first direction.

[0014] In conjunction with the first aspect of this application, in an optional embodiment, the connector is provided with a connecting portion and a clearance portion in the first direction, the connecting portion is connected to the elastic member, the clearance portion and the elastic member form a clearance space, and the position of the second snap-fit ​​member corresponds to the clearance portion.

[0015] In conjunction with the first aspect of this application, in an optional embodiment, the elastic element is a U-shaped spring sheet surrounding the outer wall of the connector.

[0016] In conjunction with the first aspect of this application, in an optional embodiment, the connecting portion is a first protrusion protruding from the side wall of the plug, and the spring tab is connected to the first protrusion.

[0017] In conjunction with the first aspect of this application, in an optional embodiment, the first snap-fit ​​member is a snap-fit ​​groove provided on the anvil, and the second snap-fit ​​member is a snap-fit ​​protrusion protruding from the outer wall of the elastic member, the snap-fit ​​protrusion matching the snap-fit ​​groove.

[0018] In conjunction with the first aspect of this application, in an alternative embodiment, the snap-fit ​​protrusion has an arcuate structure.

[0019] In conjunction with the first aspect of this application, in an optional embodiment, the connector further includes a first limiting member that protrudes from the surface of the connector;

[0020] The anvil seat is also provided with a first limiting groove, which is connected to the insertion groove and matches the first limiting member.

[0021] In conjunction with the first aspect of this application, in an optional embodiment, the connector further includes a second limiting member, the second limiting member protruding from the surface of the connector, and in a third direction, the second limiting member and the first limiting member are respectively located on both sides of the connector, the third direction being perpendicular to the first direction;

[0022] The anvil seat is also provided with a second limiting groove, which is connected to both the insertion groove and the first limiting groove, and the second limiting groove matches the second limiting member.

[0023] In conjunction with a first aspect of this application, in an alternative embodiment, the main body is bent relative to the connector toward the staple cartridge seat of the surgical instrument.

[0024] The surgical instrument provided in this application embodiment has a first snap-fit ​​member on the anvil seat and a second snap-fit ​​member on the elastic member that matches the first snap-fit ​​member. During the assembly process, it is only necessary to insert the connector of the separation component into the connector slot of the anvil seat and make the first snap-fit ​​member match the second snap-fit ​​member to realize the assembly of the separation component and the anvil seat. The separation component is not only simple in structure but also convenient and quick to install.

[0025] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0027] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the surgical instrument provided in the embodiments of this application;

[0028] Figure 2a This is a schematic diagram of the structure of the anvil seat in the surgical instrument provided in the embodiments of this application without the separation component installed;

[0029] Figure 2b A schematic diagram of a surgical instrument with a separation assembly mounted on the anvil provided in this application embodiment;

[0030] Figure 3 An exploded view of the anvil and separation assembly in the surgical instrument provided in the embodiments of this application;

[0031] Figure 4 This is a partial structural schematic diagram of the separation component in a surgical instrument provided in an embodiment of this application;

[0032] Figure 5 A three-dimensional structural schematic diagram of the separation component in a surgical instrument provided in an embodiment of this application;

[0033] Figure 6 This is a partial structural diagram of the anvil in a surgical instrument provided in an embodiment of this application;

[0034] Figure 7 A schematic diagram showing the partial structural positional relationship between the elastic element and the anvil in a surgical instrument provided in this application embodiment;

[0035] Figure 8 This is a three-dimensional structural diagram of a separation component in a surgical instrument provided in an embodiment of this application, taken from another angle.

[0036] Figure label:

[0037] 100. Surgical instruments;

[0038] 1. End effector;

[0039] 11. Jaw assembly; 111. Anvil; 1111. Insertion slot; 1112. First locking element; 1113. Locking slot; 1114. First limiting slot; 1115. Second limiting slot;

[0040] 112. Stamp cartridge holder; 12. Stamp cartridge assembly;

[0041] 2. Separate components;

[0042] 21. Main components;

[0043] 22. Connector; 221. Connecting part; 2211. First protrusion; 222. Clearance part; 22a. Clearance space; 223. First limiting member; 2231. Second protrusion; 224. Second limiting member; 2241. Second protrusion;

[0044] 23. Elastic element; 231. Second snap-fit ​​element; 2311. Snap-fit ​​protrusion; 2312. Arc-shaped structure; 232. Spring piece;

[0045] 3. Sleeve assembly; 4. Handle assembly. Detailed Implementation

[0046] To make the technical solution and beneficial effects of this utility model more apparent and understandable, a detailed description is provided below by listing specific embodiments. The accompanying drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application pertains.

[0047] In the description of this utility model, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. In other words, they should not be construed as limitations on this utility model.

[0048] In this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating the relative importance of the indicated features or the number of indicated technical features. Therefore, a feature specified as "first" or "second" can explicitly indicate that at least one of those features is included. In the description of this utility model, "multiple" means at least two, such as two, three, etc.; "several" means at least one, such as one, two, three, etc., unless otherwise explicitly specified.

[0049] In this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "linking," "fixing," and "setting," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] In this utility model, unless otherwise explicitly defined, the terms "above," "on top of," "above," "over," "below," "below," "below," or "below" for "first feature above second feature" can refer to direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Furthermore, "above," "above," and "over" for "first feature above second feature" can mean the first feature is directly above or diagonally above the second feature, or simply indicates that the horizontal height of the first feature is higher than the horizontal height of the second feature. Similarly, "below," "below," and "below" for "first feature below second feature" can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0051] Please refer to Figure 1 , Figure 1 The diagram shows the overall structure of the surgical instrument provided in the embodiments of this application. The surgical instrument 100 provided in the embodiments of this application is a stapler, which is a commonly used minimally invasive surgical instrument 100. The following embodiments use the stapler as an example for illustration.

[0052] The stapler includes an end actuator 1, a transmission assembly (not shown in the figure), a drive assembly (not shown in the figure), a sleeve assembly 3, and a handle assembly 4. The two ends of the sleeve assembly 3 are respectively connected to the end actuator 1 and the handle assembly 4. The drive assembly is installed at the handle assembly 4. One end of the transmission assembly is connected to the drive assembly, and the other end is connected to the end actuator 1.

[0053] The distal end referred to below is the end of the surgical instrument 100 away from the handle assembly 4, and the proximal end is the end of the surgical instrument 100 close to the handle assembly 4.

[0054] Specifically, the end effector 1 includes a jaw assembly 11 and a staple cartridge assembly 12. The jaw assembly 11 includes an anvil 111 and a staple cartridge seat 112 pivotally connected to the anvil 111. The anvil 111 is used to operably support the staple cartridge assembly 12 located therein. The staple cartridge seat 112 has a selective open position and a closed position. Under the transmission action of the transmission assembly, the staple cartridge seat 112 cooperates with the anvil 111 and the staple cartridge assembly 12 to clamp or release tissue.

[0055] The end effector 1 also includes a cutting blade (not shown in the figure). When the staple cartridge seat 112 cooperates with the staple seat 111 and the staple cartridge assembly 12 to clamp biological tissue, the transmission assembly drives the cutting blade to cut the tissue under the driving force of the motor assembly.

[0056] It should be noted that the transmission assembly includes multiple transmission mechanisms, which can drive components such as the pusher blade and the staple cartridge 112 to perform actions. The specific implementation principle of this part is explained in detail in the relevant patents, and will not be elaborated here.

[0057] In related technologies, during surgery, there are situations where tissue needs to be dissected, such as detaching blood vessels from the tissue and then suturing and cutting them. Currently, a separation component 2 can be connected to the distal end of the end effector 1. Installing the separation component 2 at the distal end of the end effector 1 facilitates the separation of tissue by the surgeon. Figure 2a The image shows the anvil 111 without the assembled separation assembly 2. Figure 2b An anvil 111 equipped with the separation component 2 is shown.

[0058] However, most existing separate components 2 have complex structures and require specialized disassembly and assembly tools for insertion and removal.

[0059] Based on this, this application provides a surgical instrument 100. The surgical instrument 100 has a first snap-fit ​​member 1112 on the anvil seat 111 and a second snap-fit ​​member 231 that matches the first snap-fit ​​member 1112 on the elastic member 23. During the assembly process, it is only necessary to insert the plug 22 of the separation component 2 into the plug slot 1111 of the anvil seat 111 and make the first snap-fit ​​member 1112 match the second snap-fit ​​member 231 to realize the assembly of the separation component 2 and the anvil seat 111. The separation component 2 is not only simple in structure but also convenient and quick to assemble.

[0060] Specifically, such as Figure 3As shown, the surgical instrument 100 provided in this embodiment includes an anvil 111 and a separation assembly 2. The anvil 111 is provided with an insertion groove 1111, which is located along a first direction. Figure 3 The coordinate system shown extends along the x-axis, with the first direction being the axis direction of the abutment 111.

[0061] The separation component 2 includes a main body 21, a connector 22, and an elastic element 23. The main body 21 is used to contact tissue. One end of the main body 21 is a free end, and the other end is connected to the connector 22. The connector 22 is matched with a connector groove 1111. The elastic element 23 is connected to the connector 22. During the process of inserting the connector 22 into the connector groove 1111, the elastic element 23 is deformed by force.

[0062] The anvil 111 is also provided with a first snap-fit ​​member 1112, and the elastic member 23 is provided with a second snap-fit ​​member 231. The first snap-fit ​​member 1112 matches the second snap-fit ​​member 231 so that the separation component 2 is assembled on the anvil 111.

[0063] In an alternative embodiment, the main body 21 is bent relative to the connector 22 toward the staple cartridge seat 112, and the bent main body 21 facilitates tissue separation.

[0064] In an alternative embodiment, the anvil 111 is provided with a pair of first snap-fit ​​members 1112, in the second direction, i.e. Figure 3 In the coordinate system shown, along the y-axis, a pair of first locking members 1112 are located on both sides of the insertion slot 1111 and are arranged opposite each other. The elastic member 23 is provided with a pair of second locking members 231, which are located on both sides of the insertion member 22 and are arranged opposite each other, with the second direction perpendicular to the first direction. The provision of a pair of first locking members 1112 and second locking members 231 ensures the stability and firmness of the locking between the separation component 2 and the anvil 111.

[0065] In one optional embodiment, the elastic element 23 and the plug-in element 22 are two separate components connected by fasteners. For example, the elastic element 23 is connected to the plug-in element 22 by welding. Alternatively, the elastic element 23 and the plug-in element 22 are integrally formed. This application does not limit the specific connection method between the elastic element 23 and the plug-in element 22.

[0066] In an alternative embodiment, such as Figure 4 and Figure 5 As shown, the plug-in 22 is provided with a connecting portion 221 and a clearance portion 222 in the first direction. The connecting portion 221 is connected to the elastic member 23. The connecting portion 221 is connected to the end of the plug-in 22 near the main body member 21. A clearance space 22a is formed between the clearance portion 222 and the elastic member 23. The position of the second snap-fit ​​member 231 corresponds to the clearance portion 222.

[0067] During the process of inserting the connector 22 into the connector slot 1111, the second connector 231 is blocked by the inner wall of the connector slot 1111 and deforms toward the clearance space 22a until the second connector 231 matches the first connector 1112.

[0068] Furthermore, the elastic element 23 is a U-shaped spring sheet 232, which surrounds the outer wall of the connector 22. The U-shaped spring sheet 232 is integrally formed, which can ensure structural strength.

[0069] In an optional embodiment, the elastic member 23 not only forms a clearance space 22a with the clearance portion 222 of the plug member 22, but also forms a clearance space 22a with the end of the plug member 22, so that the elastic member 23 has clearance spaces 22a when deformed in both the first direction and the second direction.

[0070] Specifically, the connecting part 221 is a first protrusion 2211 protruding from the side wall of the plug-in 22, the spring piece 232 is connected to the first protrusion 2211, and the clearance part 222 is coplanar with the side wall of the plug-in 22, thereby forming a clearance space 22a between the clearance part 222 and the spring piece 232, ensuring the effective deformation of the elastic member 23, and further ensuring the assembly effect of the separation component 2 and the anvil seat 111.

[0071] In an alternative embodiment, such as Figure 5 and Figure 6 As shown, the first snap-fit ​​member 1112 is the snap-fit ​​groove 1113 provided on the abutment seat 111, and the second snap-fit ​​member 231 is the snap-fit ​​protrusion 2311 that protrudes from the outer wall of the elastic member 23 and matches the snap-fit ​​groove 1113.

[0072] During the insertion of the connector 22 into the connector groove 1111, the elastic element 23 is resisted by the inner wall of the connector groove 1111, overcoming the elastic deformation. Under the action of the elastic force, the snap-fit ​​protrusion 2311 of the elastic element 23 is inserted into the snap-fit ​​groove 1113, realizing the snap-fit ​​assembly of the separation component 2 and the anvil seat 111. The snap-fit ​​protrusion 2311 and the snap-fit ​​groove 1113 have a simple structure, which greatly reduces the structural complexity of the surgical instrument 100.

[0073] Furthermore, such as Figure 7 As shown, the snap-fit ​​protrusion 2311 has an arc-shaped structure 2312.

[0074] In an alternative embodiment, such as Figure 3 , Figure 6 and Figure 8As shown, the connector 22 is further provided with a first limiting member 223, which protrudes from the surface of the connector 22. The anvil seat 111 is further provided with a first limiting groove 1114, which communicates with the connector groove 1111 and matches the first limiting member 223. The first limiting member 223 matches the first limiting groove 1114, which can play a guiding and limiting role during the process of the connector 22 being inserted into the connector groove 1111, thereby improving the assembly efficiency and effect of the separation component 2 and the anvil seat 111.

[0075] Furthermore, the connector 22 is also provided with a second limiting member 224, which protrudes from the surface of the connector 22 and is positioned in a third direction, i.e. Figure 3 In the coordinate system shown, along the z-axis, the second limiting member 224 and the first limiting member 223 are located on both sides of the connector 22, and the third direction is perpendicular to the first direction.

[0076] The anvil seat 111 is also provided with a second limiting groove 1115, which is connected to both the insertion groove 1111 and the first limiting groove 1114. The second limiting groove 1115 is matched with the second limiting member 224.

[0077] The first limiting member 223 and the second limiting member 224 are respectively a second protrusion 22412231 and a third protrusion protruding upward on the surface of the connector 22. The second protrusion 22412231 and the third protrusion are respectively matched with the first limiting groove 1114 and the second limiting groove 1115. The matching of the first limiting member 223 and the second limiting member 224 with the first limiting groove 1114 and the second limiting groove 1115 respectively further improves the insertion accuracy of the connector 22 and the insertion groove 1111.

[0078] It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations included in the claims. Various modifications and changes can be made to the above embodiments without departing from the scope of this disclosure. Similarly, the various technical features of the above embodiments can be arbitrarily combined to form other embodiments of this application that may not be explicitly described. Therefore, the above embodiments only illustrate several implementations of this application and do not limit the scope of protection of this patent application.

Claims

1. A surgical instrument, characterized by, The application relates to a detachable assembly (2) for a stapler (1), which comprises a body (21) for contacting tissue, a plug-in part (22) connected to the body (21) and matched with a plug-in slot (1111) of a butt (111), and an elastic part (23) connected to the plug-in part (22) and deformed under stress during the plug-in process of the plug-in part (22) in the plug-in slot (1111). The butt (111) is provided with a pair of first clamping parts (1112), and the elastic part (23) is provided with a pair of second clamping parts (231). The plug-in part (22) is provided with a connecting part (221) and a avoiding part (222) in the first direction, the connecting part (221) is connected with the elastic part (23), the avoiding space (22a) is formed between the avoiding part (222) and the elastic part (23), and the position of the second clamping part (231) corresponds to the avoiding part (222). The elastic part (23) is a U-shaped elastic sheet (232) which is arranged around the outer wall of the plug-in part (22). The connecting part (221) is a first protrusion (2211) arranged on the side wall of the plug-in part (22), and the elastic sheet (232) is connected to the first protrusion (2211). The first clamping part (1112) is a clamping slot (1113) arranged on the butt (111), and the second clamping part (231) is a clamping protrusion (2311) arranged on the outer wall of the elastic part (23), and the clamping protrusion (2311) is matched with the clamping slot (1113). The clamping protrusion (2311) is provided with an arc structure (2312).

2. The surgical instrument of claim 1, wherein, The plug-in part (22) is further provided with a first limiting part (223) which protrudes from the surface of the plug-in part (22).

3. The surgical instrument of claim 1 or 2, wherein, The butt (111) is further provided with a first limiting slot (1114) which is communicated with the plug-in slot (1111) and matched with the first limiting part (223).

4. The surgical instrument of claim 3, wherein, ​ 5. The surgical instrument of claim 4, wherein, ​ 6. The surgical instrument of claim 1 or 2, wherein, ​ 7. The surgical instrument of claim 6, wherein, ​ 8. The surgical instrument of claim 1, wherein, ​ ​ 9. The surgical instrument of claim 8, wherein, The plug-in part (22) is further provided with a second limiting part (224) which protrudes from the surface of the plug-in part (22) and is located on the two sides of the plug-in part (22) in a third direction which is perpendicular to the first direction. The abutting seat (111) is further provided with a second limiting groove (1115) which is in communication with the plug-in groove (1111) and the first limiting groove (1114), and matches the second limiting part (224).

10. The surgical instrument of claim 1, wherein, The main body part (21) is curved towards the direction of the cartridge seat (112) of the surgical instrument (100) relative to the plug-in part (22).

Images