Separation assembly for surgical instrument and surgical instrument

Abstract

The invention discloses a separation assembly for a surgical instrument and the surgical instrument, and relates to the technical field of surgical instruments. 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, convenient and fast to install and stable in fixation.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical instruments, and in particular to a separation component for surgical instruments and the surgical instrument. Background Art

[0002] When surgical instruments are used in the abdominal cavity, they are not as flexible due to the limited operating space. For example, when dealing with blood vessels, blood vessels are usually attached to other tissues. When cutting and suturing blood vessels, they need to be peeled off from other tissues.

[0003] Connecting a separation component at the distal end of the end effector can facilitate doctors to separate the blood vessel from other tissues. However, after the operation of separating the blood vessel is completed, the separation component affects the cutting and suturing of other tissues.

[0004] However, the existing separation components have complex structures, and both insertion and removal require special disassembly tools. Summary of the invention

[0005] In view of this, an embodiment of the present invention provides a surgical instrument to solve at least one problem existing in the background technology.

[0006] In a first aspect, an embodiment of the present invention provides a separation assembly for a surgical instrument, comprising:

[0007] A main body member, used for contacting the tissue;

[0008] A plug-in connector, one end of which is connected to the main body, and the plug-in connector is used to match the plug-in slot;

[0009] The elastic member is connected to the plug-in member. When the plug-in member is inserted into the plug-in slot, the elastic member is deformed by force so as to be snap-fitted into the plug-in slot.

[0010] Optionally, the elastic member is provided with a second clamping member, which is a protrusion structure or a recessed structure, and the protrusion structure or the recessed structure matches the insertion groove so that the separation assembly can be assembled on the dowel seat.

[0011] Optionally, the elastic member at least partially surrounds the circumference of the connector.

[0012] Optionally, the elastic member is a spring sheet with a U-shaped structure, and the spring sheet is arranged around the outer wall of the connector.

[0013] Optionally, the plug connector is provided with a connecting portion and an avoidance portion in the first direction, an avoidance space is formed between the avoidance portion and the elastic member, and the position of the second clamping member corresponds to the avoidance portion.

[0014] Optionally, the connecting portion is a first protrusion protruding from a side wall of the connector, and the spring sheet is connected to the first protrusion.

[0015] Optionally, the avoidance portion is provided with a connecting groove, and the elastic member is fixedly connected in the connecting groove.

[0016] Optionally, the elastic member includes a bent portion facing the main body, and an end portion of the bent portion is fixedly connected to the connecting groove.

[0017] Optionally, the second clamping member is a clamping protrusion protruding from the outer wall of the elastic member, and the clamping protrusion is used to match the plug-in slot.

[0018] Optionally, an arc-shaped structure is provided at a position of the clamping protrusion away from the main body.

[0019] Optionally, an S-shaped structure is provided at a position of the snap-fit ​​protrusion close to the main body, and the S-shaped structure has a protrusion, and the protrusion is used to abut against the insertion groove of the dowel seat.

[0020] Optionally, the connector is further provided with a first limiting member, and the first limiting member protrudes from the surface of the connector;

[0021] The plug connector is also provided with a second stopper, and the second stopper protrudes from the surface of the plug connector.

[0022] The second limiting member and the first limiting member are respectively located on two sides of the plug-in member.

[0023] Wherein, the direction in which the first limiting member protrudes from the surface of the connector and the direction in which the second limiting member protrudes from the surface of the connector are perpendicular to the axial direction of the dowel seat.

[0024] Optionally, the main body is bent relative to the connector toward the nail magazine seat of the surgical instrument.

[0025] In a first aspect, an embodiment of the present invention further provides a surgical instrument, comprising the separation assembly as described above, and an end effector;

[0026] The end actuator comprises a pin holder, the pin holder is provided with a plug-in slot, the plug-in slot is provided with a first clamping member, the plug-in slot extends along a first direction, and the first direction is the axial direction of the pin holder;

[0027] Wherein, the first clamping member matches the elastic member of the separation component so that the separation component is assembled in the insertion groove of the pin holder.

[0028] Optionally, the pin holder is provided with a pair of the first clamping parts, and in the second direction, the pair of the first clamping parts are respectively located on both sides of the plug-in slot and arranged opposite to each other; the second direction is perpendicular to the first direction.

[0029] Optionally, the first clamping member is a recessed structure or a raised structure provided in the plug-in slot.

[0030] Optionally, the dowel seat is further provided with a first limiting groove, the first limiting groove is connected to the plug-in groove, and the first limiting groove matches the plug-in component.

[0031] Optionally, the dowel seat is further provided with a second limiting groove, the second limiting groove is connected to both the plug-in groove and the first limiting groove, the second limiting groove matches the connector, and the first limiting groove and the second limiting groove are respectively located on both sides of the plug-in groove.

[0032] The surgical instrument provided in the embodiment of the present invention has a first clip on the anvil and a second clip matching the first clip on the elastic member. During the assembly process, it is only necessary to insert the connector of the separation component into the inserting slot of the anvil and make the first clip match the second clip to achieve the assembly of the separation component and the anvil. In addition, by selecting the shape and deformation ability of the elastic member, the installation can be made more secure and avoid shaking without disassembly. Therefore, during actual use, after the user installs the separation component and peels off tissues such as blood vessels, there is no need to disassemble the separation component, but the user can directly continue cutting and suturing, which makes it easier and quicker to use.

[0033] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the prior art and the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 A three-dimensional schematic diagram of the overall structure of a surgical instrument provided by an embodiment of the present invention;

[0036] Figure 2a A schematic structural diagram of a surgical instrument provided by an embodiment of the present invention in which a separation assembly is not installed on a nail support;

[0037] Figure 2bA schematic diagram of a structure in which a separation assembly is installed on an anvil in a surgical instrument provided by an embodiment of the present invention;

[0038] Figure 3 An exploded view of the structure of an anvil and a separation assembly in a surgical instrument provided by an embodiment of the present invention;

[0039] Figure 4 A schematic diagram of a portion of the structure of a separation component in a surgical instrument provided by an embodiment of the present invention;

[0040] Figure 5 A schematic diagram of the three-dimensional structure of a separation component in a surgical instrument provided by an embodiment of the present invention;

[0041] Figure 6 A schematic diagram of a portion of the structure of an anvil in a surgical instrument provided by an embodiment of the present invention;

[0042] Figure 7 A schematic diagram of the partial structural position relationship between an elastic member and an anvil in a surgical instrument provided by an embodiment of the present invention;

[0043] Figure 8 A schematic diagram of the three-dimensional structure of a separation component in a surgical instrument provided by an embodiment of the present invention from another angle;

[0044] Fig. 9 A schematic structural diagram of an anvil and a separation assembly of a surgical instrument provided in another embodiment of the present invention;

[0045] Fig.10 for Fig. 9 A magnified schematic diagram of the AA position in the middle;

[0046] Fig.11 for Fig. 9 A schematic diagram of the structure of the elastic member of the separation assembly;

[0047] Fig.12 A schematic structural diagram of an anvil and a separation assembly of a surgical instrument provided in another embodiment of the present invention;

[0048] Fig.13 for Fig.12 A magnified schematic diagram of the middle BB position;

[0049] Fig.14 for Fig.12 Schematic diagram of the structure of the elastic part of the separation component.

[0050] Reference numerals:

[0051] 100. Surgical instruments;

[0052] 1. End effector;

[0053] 11. Jaw assembly; 111. Anvil seat; 1111. Insertion slot; 1112. First clamping member; 1113. Clamping slot; 1114. First limiting slot; 1115. Second limiting slot;

[0054] 112. Nail magazine seat; 12. Nail magazine assembly;

[0055] 2. Separate components;

[0056] 21. Main body;

[0057] 22, plug-in connector; 221, connecting portion; 2211, first protrusion; 222, avoidance portion; 22a, avoidance space; 223, first stopper; 2231, second protrusion; 224, second stopper; 2241, second protrusion; 2221, connecting groove;

[0058] 23, elastic member; 231, second clamping member; 2311, clamping protrusion; 2312, arc-shaped structure; 232, spring sheet; 233, bending portion; 2313, S-shaped structure; 2314, protruding portion;

[0059] 3. Casing assembly; 4. Handle assembly. DETAILED DESCRIPTION

[0060] In order to make the technical solutions and beneficial effects of the present invention more clearly understandable, the following is a detailed description by listing specific embodiments. The 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 the present invention belongs.

[0061] In the description of the present invention, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of simplified description of the present invention, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be understood as a limitation to the present invention.

[0062] In the present invention, the terms "first" and "second" are only used for the purpose of clear description and cannot be understood as the relative importance of the indicated features or the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly include at least one of the features. In the description of the present invention, "multiple" means at least two, such as two, three, etc.; "several" means at least one, such as one, two, three, etc., unless otherwise clearly and specifically defined.

[0063] In the present invention, unless otherwise clearly defined, the terms "install", "connect", "connect", "fix", "set", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the present invention, unless otherwise clearly defined, a first feature being “on”, “above”, “above”, “below”, “below”, “below” or “below” a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact with each other through an intermediate medium. Moreover, a first feature being “on”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the horizontal height of the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0065] Please refer to Figure 1 , Figure 1 The overall structural diagram of the surgical instrument provided by the embodiment of the present invention is shown in FIG. The surgical instrument 100 provided by the embodiment of the present invention is a stapler, which is a commonly used minimally invasive surgical instrument 100. The following embodiments are described using the stapler as an example.

[0066] 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 on the handle assembly 4. One end of the transmission assembly is transmission-connected to the drive assembly, and the other end is transmission-connected to the end actuator 1.

[0067] The distal end referred to below refers to the end of the surgical instrument 100 away from the handle assembly 4 , and the proximal end refers to the end of the surgical instrument 100 close to the handle assembly 4 .

[0068] 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 therein. The staple cartridge seat 112 has a selective open position and a closed position. The staple cartridge seat 112 cooperates with the anvil 111 and the staple cartridge assembly 12 under the transmission action of the transmission assembly to achieve clamping or loosening of tissues.

[0069] The end actuator 1 also includes a cutting knife (not shown in the figure). When the nail magazine seat 112 cooperates with the nail support seat 111 and the nail magazine assembly 12 to clamp the biological tissue, under the driving force of the motor assembly, the transmission assembly drives the cutting knife to cut the tissue.

[0070] It should be noted that the transmission assembly includes multiple transmission mechanisms, which can respectively drive the push blade, nail magazine seat 112 and other components to perform actions. The specific implementation principle of this part is described in detail in the relevant patents and will not be elaborated here.

[0071] Related technology: During surgery, there is a situation where tissue is peeled off, for example, a blood vessel is peeled off from the tissue to suture and cut it. At present, a separation component 2 is connected to the distal end of the end effector 1. Installing the separation component 2 at the distal end of the end effector 1 can facilitate the doctor to separate the tissue. Figure 2a The dowel pin 111 without the separation assembly 2 is shown. Figure 2b The anvil 111 is shown assembled with the separation assembly 2.

[0072] However, most of the existing separation components 2 have complex structures, and both insertion and removal require special disassembly and assembly tools.

[0073] Based on this, an embodiment of the present invention provides a surgical instrument 100, which is provided with a first clip 1112 on the dowel seat 111, and a second clip 231 matching the first clip 1112 is provided on the elastic member 23. During the assembly process, it is only necessary to insert the connector 22 of the separation component 2 into the insertion slot 1111 of the dowel seat 111, and make the first clip 1112 match the second clip 231 to realize the assembly of the separation component 2 and the dowel seat 111. The separation component 2 is not only simple in structure but also convenient and quick to install.

[0074] Specifically, Figure 3 As shown, the surgical instrument 100 provided in the embodiment of the present invention includes a nail support 111 and a separation assembly 2, the nail support 111 is provided with a plug-in slot 1111, and the plug-in slot 1111 is connected along the first direction. Figure 3The coordinate system shown in the figure extends in the x-axis direction, and the first direction is the axial direction of the dowel seat 111.

[0075] The separation assembly 2 includes a main body 21, a plug-in connector 22 and an elastic member 23. The main body 21 is used to contact the tissue. One end of the main body 21 is a free end, and the other end is connected to the plug-in connector 22. The plug-in connector 22 matches the plug-in slot 1111. The elastic member 23 is connected to the plug-in connector 22. When the plug-in connector 22 is inserted into the plug-in slot 1111, the elastic member 23 is deformed by force.

[0076] The anvil seat 111 is further provided with a first clamping member 1112 , and the elastic member 23 is provided with a second clamping member 231 . The first clamping member 1112 matches the second clamping member 231 , so that the separation assembly 2 is assembled on the anvil seat 111 .

[0077] In an optional 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 separation of tissues.

[0078] In an optional embodiment, the anvil seat 111 is provided with a pair of first clamping members 1112, Figure 3 In the y-axis direction of the coordinate system shown in FIG, a pair of first clamping members 1112 are respectively located on both sides of the plug-in slot 1111 and are arranged opposite to each other. The elastic member 23 is provided with a pair of second clamping members 231, which are respectively located on both sides of the plug-in member 22 and are arranged opposite to each other, and the second direction is perpendicular to the first direction. The provision of a pair of first clamping members 1112 and a second clamping member 231 can ensure the stability and firmness of the clamping of the separation component 2 and the anvil seat 111.

[0079] In an optional embodiment, the elastic member 23 and the plug connector 22 are two separate parts and are connected by fasteners. As an example, the elastic member 23 is connected to the plug connector 22 by welding. Alternatively, the elastic member 23 and the plug connector 22 are integrally formed. The embodiment of the present invention does not limit the specific connection method between the elastic member 23 and the plug connector 22.

[0080] In an alternative embodiment, if Figure 4 and Figure 5 As shown, the connector 22 is provided with a connecting portion 221 and an avoiding 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 connector 22 close to the main body 21, an avoiding space 22a is formed between the avoiding portion 222 and the elastic member 23, and the position of the second clamping member 231 corresponds to the avoiding portion 222.

[0081] When the plug connector 22 is inserted into the plug slot 1111 , the second clamping member 231 is blocked by the inner wall of the plug slot 1111 and deforms toward the avoidance space 22 a until the second clamping member 231 matches the first clamping member 1112 .

[0082] Furthermore, the elastic member 23 is a U-shaped spring piece 232, and the U-shaped spring piece 232 is disposed around the outer wall of the plug-in component 22. The U-shaped spring piece 232 is integrally formed to ensure structural strength.

[0083] In an optional embodiment, the elastic member 23 forms an escape space 22a not only with the escape portion 222 of the connector 22, but also with the end of the connector 22, so that the elastic member 23 has an escape space 22a when deformed in both the first direction and the second direction.

[0084] Specifically, the connecting portion 221 is a first protrusion 2211 protruding from the side wall of the connector 22, the spring piece 232 is connected to the first protrusion 2211, and the avoidance portion 222 is coplanar with the side wall of the connector 22, thereby forming an avoidance space 22a between the avoidance portion 222 and the spring piece 232, thereby ensuring the effective deformation of the elastic member 23 and further ensuring the assembly effect of the separation component 2 and the pin seat 111.

[0085] In an alternative embodiment, if Figure 5 and Figure 6 As shown, the first clamping member 1112 is a clamping groove 1113 provided on the anvil seat 111 , and the second clamping member 231 is a clamping protrusion 2311 protruding from the outer wall of the elastic member 23 and matching with the clamping groove 1113 .

[0086] During the process of inserting the connector 22 into the inserting slot 1111, the elastic member 23 is blocked by the inner wall of the inserting slot 1111 to overcome the elastic deformation. Under the elastic force, the clamping protrusion 2311 of the elastic member 23 is inserted into the clamping slot 1113, so as to realize the clamping assembly of the separation component 2 and the anvil seat 111. The clamping protrusion 2311 and the clamping slot 1113 are simple in structure, which greatly reduces the structural complexity of the surgical instrument 100.

[0087] Figure 7 2 shows a schematic diagram of the engagement state of the engagement groove 1113 and the engagement protrusion 2311. The engagement protrusion 2311 is provided with an arc structure 2312, which facilitates the engagement protrusion 2311 to be separated from the engagement groove 1113, thereby allowing the separation assembly 2 to be separated from the anvil seat 111.

[0088] In an alternative embodiment, if Figure 3 , Figure 6 and Figure 8As shown, the plug-in connector 22 is further provided with a first stopper 223, and the first stopper 223 protrudes from the surface of the plug-in connector 22. The anvil seat 111 is further provided with a first stopper groove 1114, and the first stopper groove 1114 is connected to the plug-in groove 1111, and the first stopper groove 1114 matches the first stopper 223. The first stopper 223 matches the first stopper groove 1114, and can play a guiding and limiting role in the process of the plug-in connector 22 being inserted into the plug-in groove 1111, thereby improving the assembly efficiency and effect of the separation component 2 and the anvil seat 111.

[0089] Furthermore, the plug connector 22 is further provided with a second stopper 224, which protrudes from the surface of the plug connector 22 and extends in the third direction, i.e. Figure 3 In the z-axis direction of the coordinate system shown in , the second limiting member 224 and the first limiting member 223 are respectively located on both sides of the connector 22, and the third direction is perpendicular to the first direction.

[0090] The dowel seat 111 is further provided with a second limiting groove 1115 , which is connected to both the plug-in groove 1111 and the first limiting groove 1114 , and the second limiting groove 1115 matches the second limiting member 224 .

[0091] The first stopper 223 and the second stopper 224 are respectively a second protrusion 22412231 and a third protrusion protruding from the surface of the plug connector 22 in the third direction, and the second protrusion 22412231 and the third protrusion respectively match the first stopper groove 1114 and the second stopper groove 1115. The matching of the first stopper 223 and the second stopper 224 with the first stopper groove 1114 and the second stopper groove 1115 further improves the plugging accuracy of the plug connector 22 and the plugging groove 1111.

[0092] It should be understood that in the present invention, the second clamping member 231 provided on the elastic member 23 can be a convex structure or a concave structure, and correspondingly, a first clamping member 1112 with a concave structure or a convex structure matching therewith is provided in the plug-in slot 1111, so that when the separation component 2 is inserted into the plug-in slot 1111, the first clamping member 1112 and the second clamping member 231 are pressed and matched with each other, and the elastic member 23 is deformed by force, and finally the first clamping member 1112 and the second clamping member 231 are clamped together, so that the separation component 2 is assembled and fixed with the dowel seat 111. The accompanying drawings only illustrate an example in which the second clamping member 231 is a convex structure and the first clamping member 1112 is a concave structure. Those skilled in the art can interchange the concave and convex design according to actual needs, and the shape of the convex structure or the concave structure can also be adjusted as needed, such as arc, pointed, wavy, square, etc.

[0093] It should be understood that the elastic member 23 at least partially surrounds the peripheral side of the plug connector 22. The number of the elastic member 23 can be one or more. Figure 1-Figure 14 Only an example when the number of the elastic member 23 is one is illustrated. It is understandable that the number of the elastic member 23 can also be multiple. For example, when there are two elastic members 23, the two elastic members 23 are respectively connected to the two sides of the plug-in connector 22, so that the elastic members 23 on both sides of the plug-in connector 22 have a second clamping member 231 that can be deformed by force, and the second clamping member 231 cooperates with the first clamping member 1112 in the plug-in slot 1111 to complete the plug-in fixation. Of course, the elastic member 23 can also be installed only on one side of the plug-in connector 22, and the corresponding contact surface on the other side of the plug-in connector 22 and the plug-in slot 1111 is set to a plane.

[0094] In an optional embodiment, in order to make it easier for the separation component 2 to be inserted and assembled into the plug-in slot 1111, an arc structure 2312 is provided at a position where the clamping protrusion 2311 is away from the main body 21, so that during the plug-in process, when the first clamping member 1112 contacts the clamping protrusion 2311, it first contacts the arc structure 2312 in the shape of an arc, and after being squeezed and stressed, the arc structure 2312 is more likely to deform in the direction of the avoidance portion 222, and finally the plug-in fixation is completed. The structural design of the arc structure 2312 can complete the plug-in fixation with a relatively small force.

[0095] Alternatively, if Figure 9-11 As shown, the position of the snap-fit ​​protrusion 2311 close to the main body 21 can also be set as an S-shaped structure 2313. The S-shaped structure 2313 has a protrusion 2314. The protrusion 2314 is protruding in the direction toward the main body 21, and forms a predetermined angle with the axial direction of the anvil 111. The size of the angle can be selected as needed and is not limited here. The protrusion 2314 is used to abut against the plug-in slot 1111 of the anvil, for example, against the inner wall of the first snap-fit ​​part 1112 of the plug-in slot 1111. Its function is to make the separation component 2 more firmly fixed, and to prevent the separation component 2 from falling off and shaking during use, such as when peeling off other tissues such as blood vessels.

[0096] In an alternative embodiment, if Figure 12-14 As shown, a connection groove 2221 is provided in the avoidance portion 222. The connection groove 2221 is a concave structure on the surface of the avoidance portion 222, and the connection groove 2221 has a groove bottom and a groove wall. The end of the elastic member 23 is snap-fitted or fixedly connected in the connection groove 2221. When the separation component 2 is working, the end of the elastic member 23 can apply pressure to the groove bottom and / or groove wall of the connection groove 2221 to prevent the separation component 2 from shaking.

[0097] Optionally, the elastic member 23 is provided with a bending portion 233. The bending portion 233 is located on one side of the elastic member 23 close to the main member 21. The bending portion 233 is bent in a direction away from the main member 21. The end of the bending portion 233 is connected to the connecting groove 2221. Through the structural design of the bending portion 233, the stability of the separation component 2 can be further increased to avoid shaking, so that it will not cause adverse effects on subsequent cutting and suturing during use, that is, it does not need to be disassembled, so that in actual use, after the user installs the separation component 2 and peels off the blood vessels and other tissues, there is no need to disassemble the separation component 2, but directly continue cutting and suturing, which is simpler and faster to use.

[0098] It is understandable that the thickness or size of the elastic member 23 can be selected as needed to change the ability of the elastic member 23 to deform under force, so that the connection between the separation component 2 and the nail seat 111 is more secure, avoiding shaking and making it more difficult to disassemble.

[0099] The surgical instrument and its separation component 2 provided in the embodiment of the present invention may not need to be disassembled after installation. Therefore, in actual use, after the user installs the separation component and peels off tissues such as blood vessels, there is no need to disassemble the separation component 2, but the user can directly continue cutting and suturing, which makes it easier and faster to use.

[0100] The surgical instrument and the separation assembly 2 thereof provided in the embodiment of the present invention have the advantages of simple structure, stable and reliable connection, and not easy to shake, and can be easily installed when in use.

[0101] It should be understood that the above embodiments are exemplary and are not intended to include all possible implementations included in the claims. Various modifications and changes may be made on the basis of the above embodiments without departing from the scope of the present disclosure. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form other embodiments of the present invention that may not be explicitly described. Therefore, the above embodiments only express several implementations of the present invention and do not limit the scope of protection of the patent of the present invention.

Claims

1. A separation assembly for a surgical instrument, the surgical instrument comprising a pin holder and a plug-in slot provided on the pin holder, characterized in that: The separation components include: A main body member, used for contacting the tissue; A plug-in connector, one end of which is connected to the main body, the plug-in connector being used to match the plug-in slot; and The elastic member is connected to the plug-in member. When the plug-in member is inserted into the plug-in slot, the elastic member is deformed by force so as to be snap-fitted into the plug-in slot.

2. The separation assembly for surgical instruments according to claim 1, characterized in that: The elastic member is provided with a second clamping member, which is a protruding structure or a recessed structure, and the protruding structure or the recessed structure matches the insertion slot so that the separation component can be assembled on the dowel seat.

3. The separation assembly for surgical instruments according to claim 1 or 2, characterized in that: The elastic member at least partially surrounds the peripheral side of the plug-in member.

4. The separation assembly for surgical instruments according to claim 3, characterized in that: The elastic member is a U-shaped spring sheet, and the spring sheet is arranged around the outer wall of the connector.

5. The separation assembly for surgical instruments according to claim 4, characterized in that: The plug connector is provided with a connecting portion and an evacuation portion in the first direction, an evacuation space is formed between the evacuation portion and the elastic member, and the position of the second clamping member corresponds to the evacuation portion.

6. The separation assembly for surgical instruments according to claim 5, characterized in that: The connecting portion is a first protrusion protruding from the side wall of the connector, and the elastic sheet is connected to the first protrusion.

7. The separation assembly for surgical instruments according to claim 5, characterized in that: The avoidance portion is provided with a connecting groove, and the elastic member is fixedly connected in the connecting groove.

8. The separation assembly for surgical instruments according to claim 7, characterized in that: The elastic member comprises a bending portion on a side close to the main body member, the bending portion is bent in a direction away from the main body member, and an end portion of the bending portion is connected to the connecting groove.

9. The separation assembly for surgical instruments according to claim 4, characterized in that: The second clamping member is a clamping protrusion protruding from the outer wall of the elastic member, and the clamping protrusion is used to match the plug-in slot.

10. The separation assembly for a surgical instrument according to claim 9, characterized in that: The clamping protrusion is provided with an arc structure at a position away from the main body.

11. The separation assembly for a surgical instrument according to claim 9, characterized in that: An S-shaped structure is provided at a position of the clamping protrusion close to the main body, and the S-shaped structure has a protrusion, and the protrusion is used to abut against the insertion groove of the pin seat.

12. The separation assembly for a surgical instrument according to any one of claims 1 to 11, characterized in that: The plug connector is also provided with a first limiting member, and the first limiting member protrudes from the surface of the plug connector; The plug connector is also provided with a second stopper, and the second stopper protrudes from the surface of the plug connector. The second limiting member and the first limiting member are respectively located on two sides of the plug-in member. Wherein, the direction in which the first limiting member protrudes from the surface of the connector and the direction in which the second limiting member protrudes from the surface of the connector are perpendicular to the axial direction of the dowel seat.

13. The separation assembly for a surgical instrument according to any one of claims 1 to 11, characterized in that: The main body is bent relative to the connector toward the nail magazine seat of the surgical instrument.

14. A surgical instrument, characterized in that: include: A separation assembly as claimed in any one of claims 1 to 13, and an end effector; The end actuator comprises a pin holder, the pin holder is provided with a plug-in slot, the plug-in slot is provided with a first clamping member, the plug-in slot extends along a first direction, and the first direction is the axial direction of the pin holder; Wherein, the first clamping member matches the elastic member of the separation component so that the separation component is assembled in the insertion groove of the pin holder.

15. The surgical instrument according to claim 14, characterized in that The pin holder is provided with a pair of the first clamping parts. In the second direction, the pair of the first clamping parts are respectively located on both sides of the plug-in slot and arranged opposite to each other; the second direction is perpendicular to the first direction.

16. The surgical instrument according to claim 14 or 15, characterized in that The first clamping member is a recessed structure or a raised structure arranged in the plug-in slot.

17. The surgical instrument according to claim 14 or 15, characterized in that The dowel seat is also provided with a first limiting groove, the first limiting groove is communicated with the plug-in groove, and the first limiting groove matches the plug-in component.

18. The surgical instrument according to claim 17, characterized in that The dowel seat is also provided with a second limiting groove, the second limiting groove is connected with the plug-in groove and the first limiting groove, the second limiting groove matches the plug-in component, and the first limiting groove and the second limiting groove are respectively located on both sides of the plug-in groove.

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