Separate parts, components and surgical kits for surgical instruments

Abstract

The present invention provides a separator, assembly, and surgical kit for a surgical instrument. The separator is used to peel off tissue and is detachably mounted on the surgical instrument. The surgical instrument has a mounting end for mounting the separator, and the separator includes an elastic member. When the separator is mounted on the surgical instrument, the elastic member abuts against the end face of the mounting end. Using the separator to peel off target tissue makes the operation more convenient. Moreover, when the separator is mounted on the surgical instrument, the elastic member abuts against the end face of the mounting end, which can minimize the risk of the distal end face of the mounting end scratching the tissue and minimize the risk of tissue being trapped in the gap between the distal end face of the mounting end and the separator.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a separator and assembly for surgical instruments. The separator is used for peeling off target tissue, and the assembly comprises a separator and a packaging box for accommodating the separator.

[0002] The present invention also relates to a surgical kit comprising a surgical instrument and the above-mentioned component. Background Art

[0003] A stapler used in surgical procedures is a surgical instrument that can simultaneously suture a patient's wound and remove excess tissue. It is widely used for tissue removal and anastomosis in minimally invasive surgeries such as abdominal surgery, gynecology, pediatrics, and thoracic surgery. The stapler enters the human body through a cannula precisely positioned at the surgical site, then creates a longitudinal incision in the tissue and applies staples on the opposite side of the incision, thereby separating and anastomosing the tissue, similar to a stapler. The stapler includes an end effector, which includes a staple cartridge seat and a staple anvil, and the staple cartridge seat is used to receive the staple cartridge; the stapler also includes a cutting member that is operably supported relative to the staple cartridge seat. Once the doctor determines that the end effector has properly grasped the tissue and is in a closed position, he can fire the stapler to cut and suture the tissue.

[0004] During surgery, doctors sometimes need to cut and suture specific target tissues that are attached to other tissues. For example, doctors sometimes need to cut and suture blood vessels, but blood vessels are often attached to other tissues. To cut and suture the blood vessels, doctors need to peel the blood vessels from the other tissues, then insert the blood vessels between the anvil and the stapler, and finally use a stapler to cut and suture the blood vessels.

[0005] When doctors operate existing surgical instruments, if they need to cut and suture specific target tissues, they usually need to repeatedly adjust the angle of the surgical instrument so that the distal end of the end effector is aligned with the target tissue, and apply force to the surgical instrument in the direction toward the distal end, first making the distal end of the end effector separate the target tissue, and then making the target tissue located between the nail holder and the nail magazine seat, thereby cutting and suturing the target tissue.

[0006] However, the design of the distal end of the existing end effector is not suitable for peeling off the target tissue, and the operation of doctors using the end effector of the surgical instrument to separate the target tissue is time-consuming and laborious. Summary of the Invention

[0007] In view of the deficiencies in the prior art, the present invention aims to provide a separating piece for a surgical instrument, which is used to peel off target tissue.

[0008] The present invention is achieved through the following technical solution: a separator for a surgical instrument, the separator is used to peel off tissue, the separator is detachably installed on the surgical instrument, the surgical instrument has a mounting end for mounting the separator, and the separator includes an elastic member; when the separator is mounted on the surgical instrument, the elastic member abuts against the end face of the mounting end.

[0009] Furthermore, the outer surface of the elastic member protrudes from the outer surface of the mounting end, or the outer surface of the elastic member is flush with the outer surface of the mounting end.

[0010] Furthermore, the outer surface of the elastic member protrudes from the outer surface of the separation body, or the outer surface of the elastic member is flush with the outer surface of the separation body.

[0011] Furthermore, the separating member includes a narrow groove, and the elastic member is arranged in the narrow groove; the mounting end has a first outer surface, the separating member has a second outer surface, and the narrow groove is located at the junction of the first outer surface and the second outer surface.

[0012] Furthermore, the elastic member and the slot are shaped to match.

[0013] Furthermore, the elastic member is interference fit with the narrow slot.

[0014] Furthermore, the slot extends circumferentially.

[0015] Furthermore, the bottom surface of the slot includes a depression and / or a protrusion.

[0016] Furthermore, the bottom surface of the narrow groove is symmetrically arranged relative to the central symmetry plane in the longitudinal direction of the separator.

[0017] Furthermore, the elastic member is an independently formed component, or the elastic member is provided on the separation member by injection molding.

[0018] Furthermore, the surgical instrument is a stapler; and the mounting end is the distal end of the anvil of the end effector of the stapler.

[0019] Furthermore, the separator includes a connected mounting portion and a working portion; the mounting portion is used for detachably mounting the separator and the surgical instrument; the working portion includes a proximal end and a distal end, and the width of the working portion gradually decreases along the direction from the proximal end to the distal end.

[0020] Furthermore, the separating piece includes a mounting portion and a working portion connected to each other; the mounting portion is used for detachably mounting the separating piece and the surgical instrument; and the working portion has a working surface extending in an arc.

[0021] Furthermore, the working surface is a concave arc surface.

[0022] Compared with the prior art, the beneficial effects of the present invention are: using the separator to peel off the target tissue makes the operation more convenient; moreover, when the separator is installed on the surgical instrument, the elastomer abuts against the end face of the mounting end, which can avoid the distal end face of the mounting end from scratching the tissue to the greatest extent and minimize the risk of tissue being clamped in the gap between the distal end face of the mounting end and the separator.

[0023] In view of the deficiencies of the prior art, the present invention aims to provide a component for a surgical instrument, which includes a separation piece for separating a target tissue and a packaging box for accommodating the separation piece.

[0024] The present invention is achieved through the following technical solution: a component for surgical instruments, the component comprising a separator and a packaging box, the packaging box comprising a receiving portion for receiving the separator, and the separator is any of the separators described above.

[0025] Furthermore, when the separating member is received in the receiving portion, the elastic member elastically contacts the inner surface of the receiving portion.

[0026] Furthermore, the separator and the surgical instrument are switched between a first state and a second state through a snap-fit ​​mechanism. In the first state, the separator is connected to the surgical instrument; in the second state, the separator is disconnected from the surgical instrument. The packaging box also includes an operating member, which drives the snap-fit ​​mechanism to drive the separator to switch from the first state to the second state.

[0027] Furthermore, the snap-fit ​​mechanism includes a snap-fit ​​portion provided on the separator and a snap-fit ​​interface provided on the surgical instrument. The snap-fit ​​portion and the snap-fit ​​interface are elastically coupled or disengaged to enable the separator and the surgical instrument to switch between the first state and the second state.

[0028] Compared with the prior art, the present invention has the beneficial effects of: the separating piece makes the stripping operation of the target tissue more convenient, and the packaging box provides packaging for the separating piece.

[0029] In view of the deficiencies in the prior art, the present invention aims to provide a surgical kit comprising surgical instruments and the above-mentioned components.

[0030] The present invention is achieved through the following technical solution: a surgical kit, comprising a surgical instrument and any one of the components described above, wherein the separating piece is used to be mounted on the surgical instrument to peel off tissue.

[0031] Compared with the prior art, the beneficial effects of the present invention are: the surgical kit includes the above components and surgical instruments, can meet the doctor's requirements for separating target tissues and cutting and suturing the target tissues, and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a front view of the surgical instrument provided by the present invention;

[0033] Figure 2 is with Figure 1 The surgical instrument shown is a three-dimensional view of the anvil and the separation member, showing the front and part of the back respectively;

[0034] Figure 3 and Figure 4 yes Figure 2 a perspective view of the separated parts shown;

[0035] Figure 5 yes Figure 4 An exploded perspective view of the separated parts shown;

[0036] Figure 6 yes Figure 1 A partial perspective view of the anvil of the surgical instrument shown;

[0037] Figure 7 and Figure 8 It is a three-dimensional diagram of the combination of the anvil, the separator, and the packaging box;

[0038] Figure 9 and Figure 10 yes Figure 8 an exploded perspective view of the assembly shown;

[0039] Figure 11 yes Figure 10 A perspective view of the packaging box shown;

[0040] Figure 12 and Figure 13 yes Figure 7 The cross-section along the longitudinal direction, Figures 12 to 13 The state change of shows the state change process of disassembling the separated parts using the packaging box;

[0041] Figure 14 yes Figure 12 Enlarged view of part A;

[0042] Figure 15 yes Figure 12 Enlarged view of part B;

[0043] Figure 16 is a perspective view of a separator provided in a second embodiment of the present invention; Figure 17 yes Figure 16An exploded perspective view of the separated parts shown;

[0044] Figure 18 is a perspective exploded view of a separation member provided in a third embodiment of the present invention;

[0045] Figure 19 is a perspective view of a separator provided in a fourth embodiment of the present invention;

[0046] Figure 20 yes Figure 19 An exploded perspective view of the separated parts shown;

[0047] Figure 21 is a perspective view of a separator provided in a fifth embodiment of the present invention mounted to an anvil;

[0048] Figure 22 yes Figure 21 a perspective view of the separated parts shown;

[0049] Figure 23 is a perspective view of a separator provided by a sixth embodiment of the present invention mounted to an anvil;

[0050] Figure 24 and Figure 25 yes Figure 23 3D exploded view of

[0051] Figure 26 yes Figure 23 a perspective view of the separated parts shown;

[0052] Figure 27 is a perspective view of a separator provided by a seventh embodiment of the present invention mounted to an anvil;

[0053] Figure 28 yes Figure 27 a perspective view of the separated parts shown;

[0054] Figure 29 yes Figure 28 An exploded perspective view of the separated parts is shown. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0056] The terms "proximal", "rear", "distal" and "front" used in the present invention are relative to the clinician who manipulates the handle assembly of the surgical instrument. The terms "proximal" and "rear" refer to the part close to the clinician, and the terms "distal" and "front" refer to the part away from the clinician. For example, the handle assembly is on the proximal and rear side, and the end effector is on the distal and front side; for another example, the proximal end of a component refers to the end relatively close to the handle assembly, and the distal end refers to the end relatively close to the end effector. In the present invention, the relative positional relationship of the various components of the separator, such as the relative position at the "proximal" end or the "distal" end, is based on the state of the separator installed on the surgical instrument. The terms "upper" and "lower" are based on the relative positions of the anvil and the nail magazine seat of the end effector. Specifically, the anvil is at the "upper" and the nail magazine seat is at the "lower".

[0057] "Longitudinal" is defined as the direction from far to near or from near to far. The "longitudinal" direction of a separator is defined when the separator is installed on a surgical instrument. The "longitudinal" direction of a packaging box is defined when the separator is installed on the packaging box, that is, the longitudinal direction of the packaging box is parallel to the longitudinal direction of the separator. In addition, a component extending longitudinally means that the length of the component is greater than its width, for example, the overall shape is long. However, it should be understood that "longitudinal extension" does not limit the specific shape and location of the component.

[0058] The surface of the separator that is close to the target tissue is defined as the "front side," and the surface that is away from the target tissue is defined as the "back side." Specifically, when the separator is operating, the concave surface of the working portion is close to the target tissue and can separate the target tissue from other tissues. The surface on which the concave surface is located is defined as the front side, and the surface on which the convex surface is located is defined as the back side.

[0059] It should be understood that the terms "proximal," "distal," "posterior," "front," "upper," "lower," "front," and "back" are defined for ease of description. However, surgical instruments can be used in many directions and positions, so these terms expressing relative positional relationships are not limiting or absolute. "Longitudinal" is also defined for ease of description. In the present invention, if the above definitions are otherwise clearly defined or limited, they shall comply with such clear definitions or limitations.

[0060] In the present invention, unless otherwise expressly specified or limited, terms such as "connected" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, movable connections, or integration. They can refer to direct connections or indirect connections through an intermediate medium. They can refer to internal communication between two components or interaction between two components. "Connected" does not include integration. Otherwise, "connected" has the same meaning as "connected." Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0061] Figure 1 A surgical instrument 100 according to the present invention is shown.

[0062] See also Figure 1 The surgical instrument provided herein is a stapler, preferably an electric stapler. The surgical instrument 100 includes a main unit 10 and a battery pack 12 detachably mounted to the main unit 10. Those skilled in the art will appreciate that the surgical instrument may also be a manual stapler. Any device employing the same or similar embodiments as those of this embodiment is encompassed within the scope of protection of the present invention.

[0063] The main body 10 includes a shaft assembly 14, a housing 16 disposed at one end of the shaft assembly 14, and an end actuator 18 disposed at the other end of the shaft assembly 14. A cutting member (not shown) is disposed in the end actuator 18.

[0064] The shaft assembly 14 includes a sleeve 20 and a core shaft (not shown) housed in the sleeve 20. A motor and a transmission mechanism are provided in the housing 16, and the motor drives the end actuator 18 and the cutting member through the transmission mechanism. The end actuator 18 includes a staple cartridge seat 28 and a staple anvil 30 rotatably connected to the staple cartridge seat 28. The staple cartridge seat 28 is used to operably support the staple cartridge assembly (not shown) located therein. The staple anvil 30 can selectively move between an open position and a closed position to clamp or release the tissue. The cutting member is provided in the end actuator 18 for cutting the tissue, and the staple cartridge assembly is used to suturing the tissue.

[0065] The transmission mechanism includes an end effector drive mechanism that drives the anvil 30 of the end effector 18 to rotate relative to the staple cartridge holder 28, selectively moving it between a closed position and an open position. Generally speaking, the end effector 18 drive mechanism includes a gear, a cam, and a sleeve 20. The gear, through the cam's switching action, drives the sleeve 20 to move linearly. This linear motion of the sleeve 20, through the switching mechanism, drives the anvil 30 to rotate. The specific structure of the end effector drive mechanism is the same or similar to that of the prior art and will not be further described.

[0066] The transmission mechanism also includes a cutting member drive device. Generally speaking, the cutting member drive device includes a gear, a rack, and a mandrel. The gear rotates to drive the rack, mandrel, and cutting member to linear motion, thereby cutting tissue. The specific structure of the cutting member drive device is the same or similar to that of the prior art and will not be repeated here.

[0067] When the surgical instrument is in use, first, the end effector drive device drives the cannula 20, which in turn drives the anvil 30 to rotate and cooperate with the staple cartridge seat 28 to clamp the target tissue. Then, the motor starts and rotates forward, and the cutting member drive device drives the cutting member to advance via the mandrel. The cutting member moves from an initial position to a final position within the end effector 18 of the surgical instrument. The cutting member simultaneously pushes the staple pusher block in the staple cartridge from an initial position to a final position, achieving the effect of cutting excess tissue while simultaneously suturing the cut tissue. Then, the motor rotates in reverse, and the cutting member drive device drives the cutting member to retract to the initial position via the mandrel. Then, the end effector drive device drives the cannula 20, which in turn drives the anvil 30 to open and release the tissue. Finally, the end effector drive device drives the cannula 20 to drive the anvil 30 to close. Of course, before and after use of the surgical instrument, the anvil 30 needs to be closed relative to the staple cartridge seat 28, so that the end effector 18 can be inserted into or removed from the patient's body through the puncture cannula. This will not be repeated here.

[0068] Figures 2 to 15 A first embodiment of a separator according to the present invention is shown, which is used in conjunction with a surgical instrument 100 .

[0069] Please combine Figure 1 and Figure 2 This embodiment also provides a separator 200 for use with the surgical instrument 100. The separator 200 is used to separate tissue. Specifically, the separator 200 is used to separate the target tissue from other tissues, making it easier for the surgical instrument 100 to cut and suture the target tissue. For example, a doctor first uses the separator 200 to separate a blood vessel from other tissues, and then uses the surgical instrument 100 to cut and suture the separated blood vessel.

[0070] The separator 200 is detachably connected to the surgical instrument 100. That is, the separator 200 switches between a first state and a second state. In the first state, the separator 200 is connected to the surgical instrument 100; in the second state, the separator 200 is detached from the surgical instrument 100.

[0071] Thus, when the separator 200 is needed, the doctor connects the separator 200 to the surgical instrument 100, and first uses the separator 200 to separate the target tissue from other tissues. Then, the doctor moves the surgical instrument 100 forward so that the target tissue enters between the staple cartridge seat 28 and the anvil seat 30, and operates the surgical instrument 100 to cut and suture the target tissue. When the separator 200 is no longer needed, the doctor switches the separator 200 from the first state to the second state, and the separator 200 is separated from the surgical instrument 100, so as to prevent the separator 200 from occupying the surgical space and affecting the convenience of the surgical instrument 100 in cutting and suturing other tissues.

[0072] Specifically, the separator 200 is detachably connected to the end effector 18 of the surgical instrument 100. The end effector 18 is the working component of the surgical instrument 100 that directly contacts tissue and performs tissue cutting and suturing. The detachable connection between the separator 200 and the end effector 18 conforms to the doctor's operating habits and facilitates the doctor's operation.

[0073] More specifically, the separator 200 is detachably connected to the anvil 30 of the end effector 18. Since the anvil 30 of the conventional surgical instrument 100 does not have other components such as a staple cartridge installed, the detachable connection of the separator 200 to the anvil 30 allows for the rational use of the anvil 30 without interfering with the installation and removal of other components (such as the staple cartridge), resulting in a more rational design. More specifically, the detachable connection of the separator 200 to the distal end of the anvil 30 is more in line with the surgeon's operating habits and facilitates the surgeon's operation.

[0074] Please combine Figures 3 to 5 The separating member 200 includes a mounting portion 220 and a working portion 230. The mounting portion 220 is detachably connected to the surgical instrument 100, specifically, to the distal end of the anvil 30 of the end effector 18. The working portion 230 is used to peel off tissue.

[0075] The mounting portion 220 is detachably connected to the surgical instrument 100 via a mating mechanism. The mating mechanism includes a plug-in mechanism and a snap-in mechanism. The plug-in mechanism includes a plug-in portion 222 provided on the separator 200 and a plug-in channel 50 provided on the surgical instrument 100. The snap-in mechanism includes a snap-in portion 240 provided on the separator 200 and a snap-in interface 60 provided on the surgical instrument 100. The plug-in channel 50 and the snap-in interface 60 are in communication. Specifically, the snap-in interface 60 is in communication with the proximal end of the plug-in channel 50 and extends through the sidewall of the plug-in channel. When installing the separator 200, the plug-in portion 222 and the snap-in portion 240 are inserted into the surgical instrument 100 along the plug-in channel 50. After a certain insertion distance, the snap-in portion 240 snaps into the snap-in interface 60, securing the separator 200 to the surgical instrument 100. Thus, the mounting portion 220 of the separator 200 and the surgical instrument 100 are detachably connected via plug-in and snap-in mechanisms, ensuring reliable installation and easy disassembly.

[0076] The mounting portion 220 includes a connecting portion 222 and a clamping portion 240. The clamping portion 240 is elastically coupled to the surgical instrument 100. Specifically, the clamping portion 240 is connected to the surgical instrument 100 by elastic force and can be disconnected from the surgical instrument 100 by overcoming the elastic force, providing a secure connection and easy assembly and disassembly. The elastic force can be derived from the elasticity of the clamping portion 240 itself, or from another elastic member abutting against the clamping portion 240 to provide the elastic force.

[0077] Specifically, the engaging portion 240 is elastically coupled to the card interface 60. That is, the engaging portion 240 snaps into the card interface 60 under the action of elastic force, thereby securing the separator 200 to the surgical instrument 100. Overcoming the elastic force, the engaging portion 240 can be disengaged from the card interface 60, thereby separating the separator 200 from the surgical instrument 100.

[0078] The clamping portion 240 has a first end 241 and a second end 242. The first end 241 is connected to the plug-in portion 222, and the second end 242 is elastically matched with the surgical instrument 100. Specifically, the second end 242 rotates around the first end 241, so that the separator 200 is fixed to the surgical instrument 100 or detached therefrom, thereby achieving a detachable connection. The second end 242 rotates around the first end 241, that is, the rotation axis is located at the position of the first end 241. In this embodiment, the rotation axis of the second end 242 is perpendicular to the central symmetry plane in the longitudinal direction of the separator 200. In this embodiment, the first end 241 is located at the distal end relative to the second end 242. Those skilled in the art will appreciate that the first end 241 may also be located at the proximal end relative to the second end 242.

[0079] Specifically, the first end 241 includes a rotating shaft 243. The inserting portion 222 is provided with an axial hole 224. The rotating shaft 243 is installed in the axial hole 224. The rotating shaft 243 rotates in the axial hole 224 to rotate the clamping portion 240, ultimately detachably connecting the separating member 200 to the surgical instrument 100. The rotation axis is the central axis of the rotating shaft 243.

[0080] The shaft hole 224 is partially open, and the rotating shaft 243 is partially received in the shaft hole 224. In other words, the circumferential extension angle of the shaft hole 224 is less than 360 degrees. For example, the circumferential extension angle of the shaft hole 224 is 180 degrees. The partially open shaft hole 224 facilitates the installation of the rotating shaft 243 into the shaft hole 224 and can also reduce the size of the separator 200, making the separator 200 more compact.

[0081] The first end 241 of the clamping portion 240 is mounted on the first side surface 229 of the plug-in portion 222. It should be noted that the first side surface 229 refers to the surface on the back side of the plug-in portion 222, and this surface is not limited to the plane area indicated by the label 229. The second end 242 of the clamping portion 240 protrudes from the second side surface 227 of the plug-in portion 222. It should be noted that the second side surface 227 refers to the surface on the front side of the plug-in portion 222, and this surface is not limited to the plane area indicated by the label 227. The plug-in portion 222 is provided with an opening 228 that passes through the first side surface 229 and the second side surface 227, and the second end 242 protrudes from the first side surface 229 through the opening 228 to the second side surface 227.

[0082] Therefore, the opening 228 provides space for the movement stroke of the second end 242 of the clamping part 240. That is to say, the thickness of the plug-in part 222 itself provides space for the movement stroke of the second end 242 of the clamping part 240. Not only is the structure reliable, but the size of the separator 200 can also be reduced. The structural design is very reasonable.

[0083] The second end 242 of the clamping portion 240 is elastically coupled to the clamping interface 60 on the surgical instrument 100. In this embodiment, the clamping portion 240 itself is not elastic. The separator 200 further includes a support portion 250 that abuts against the clamping portion 240. The support portion 250 elastically supports the clamping portion 240. The support portion 250 is at least partially made of an elastic material, and the support portion 250 provides elastic force for the clamping portion 240. In other words, the clamping portion 240 only needs to realize the function of coupling with or disengaging from the surgical instrument 100, while the support portion 250 only needs to realize the function of providing elastic force. The clamping portion 240 and the support portion 250 each perform their respective functions, which can reduce the process requirements for the clamping portion 240 and the support portion 250, and better meet the needs of mass production.

[0084] In order to apply a force to the clamping portion 240 toward the second side surface 227, so that the clamping portion 240 remains in the clamping interface 60 in the absence of external force, thereby maintaining the first state of connection with the surgical instrument 100, the support portion 250 is arranged on the first side surface 229 of the clamping portion 240 and away from the second side surface 227 relative to the clamping portion 240.

[0085] Specifically, the support portion 250 has a first portion 251 and a second portion 252 connected to each other, the first portion 251 is connected to the first side surface 229 , and the second portion 252 abuts against the clamping portion 240 , providing elastic force to the clamping portion 240 so that the clamping portion 240 has a tendency to be clamped into the card interface 60 .

[0086] In order to reliably fix the support portion 250 on the separator 200, the mounting portion 220 is provided with a connecting portion 260, and the support portion 250 and the mounting portion 220 are welded and fixed at the connecting portion 260. Those skilled in the art will appreciate that other suitable fixing methods may also be used depending on the materials of the support portion 250 and the mounting portion 220.

[0087] As previously mentioned, the shaft hole 224, where the rotating shaft 243 is mounted, is partially open. To prevent the rotating shaft 243 from falling out of the open shaft hole 224, the support portion 250 covers the open portion of the shaft hole 224. Specifically, the connecting portion 260 is disposed adjacent to the shaft hole 224, and the connecting portion 260 is located farther away from the second end 242 of the engaging portion 240 relative to the shaft hole 224. The distal end of the first portion 251 of the support portion 250 is fixed to the connecting portion 260. As a result, the support portion 250, which extends from the distal end toward the proximal end, naturally covers the shaft hole 224, resulting in a very rational structural design.

[0088] It can be seen that the position of a portion of the rotating shaft 243 is defined by the shaft hole 224, and the position of the other portion is defined by the support portion 250. Compared with the case where the support portion 250 is superimposed on the fully enclosed shaft hole 224, the size of the separator 200 can be significantly reduced, making the structure of the separator 200 more compact.

[0089] It should be emphasized that the present invention is committed to reducing the size of the separator 200 in many aspects. Although the size reduction caused by these designs may not be noticeable to the naked eye (for example, less than 1 mm), the size of the separator 200 is crucial because: the end effector 18 of the surgical instrument 100 and the separator 200 both need to pass through the puncture cannula into the patient's body for operation. In order to achieve the purpose of minimally invasive surgery, the puncture cannula has a standard size (for example, 5mm\10mm\12mm\15mm), and the width of the end effector 18 and the separator 200 must be smaller than the diameter of the puncture cannula. Therefore, when designing the end effector 18 and the separator 200, even if the size reduction is less than 1 mm, the designers need to repeatedly consider and optimize the structure to achieve it.

[0090] As previously described, the first end 241 of the engaging portion 240 is mounted on the first side surface 229 of the plug-in portion 222, and the first portion 251 of the support portion 250 is connected to the first side surface 229. To better accommodate the engaging portion 240 and the support portion 250, the first side surface 229 of the plug-in portion 222 is recessed inward to form an accommodating space 226. Specifically, the plug-in portion 222 of the mounting portion 220 is provided with the accommodating space 226, and a portion of the engaging portion 240 is accommodated within the accommodating space 226. The accommodating space 226 includes an opening 228 extending through the plug-in portion 222. In the first state, the second end 240 of the engaging portion 240 protrudes from the opening 228 to engage with the card interface 60. When the separator 200 is in the first state, a portion of the engaging portion 240 is accommodated within the accommodating space 226. Preferably, when the separator 200 is in the first state, a portion of the support portion 250 is also accommodated within the accommodating space 226.

[0091] Because the accommodating space 226 can accommodate at least a portion of the clamping portion 240, and even at least a portion of the supporting portion 250, the clamping portion 240 and the supporting portion 250 are prevented from completely protruding beyond the first side surface 229 of the plug-in portion 222. By rationally utilizing the space within the plug-in portion 222, not only can the size of the plug-in portion 222 be reduced, but the structure of the plug-in portion 222 can also be more regular. Accommodating space 226 accommodates a portion of the clamping portion 240 and also limits the position of the clamping portion 240. The second end 242 of the clamping portion 240 is located in the opening 228, allowing the second end 242 to change position under the action of elastic force to perform its function. Preferably, a portion of the supporting portion 250 is accommodated in the accommodating space 226, which can also prevent interference between the supporting portion and the plug-in channel when the plug-in portion is inserted into the plug-in channel.

[0092] In this embodiment, the plug-in portion 222 and the clamping portion 240 themselves are not elastic. Separator 200 further includes an elastic body that abuts against the clamping portion 240, elastically supporting the clamping portion 240. The elastic body serves as a support portion 250, which is at least partially made of an elastic material and provides elastic force for the clamping portion 240. Those skilled in the art will appreciate that the clamping portion 240 itself may also be elastic. Any solution that is the same or similar to that of this embodiment is encompassed within the scope of protection of the present invention.

[0093] In this embodiment, there is no other elastic body between the support portion 250 and the clamping portion 240. The support portion 250 alone provides elastic force for the clamping portion 240. That is, the elastic body that abuts against and elastically supports the clamping portion 240 only includes the support portion 250. Those skilled in the art will appreciate that, in addition to providing the support portion 250, another elastic body, such as a second elastic body, can be provided between the support portion 250 and the clamping portion 240. The second elastic body and the support portion 250 can jointly provide elastic force for the clamping portion 240. Alternatively, the support portion 250 can be omitted, and only another elastic body can provide elasticity for the clamping portion 240. Any solution that is the same or similar to that of this embodiment is encompassed within the scope of protection of the present invention.

[0094] The second end 242 of the clamping portion 240 includes a clamping surface 244 and an inclined surface 246 arranged at an angle to the clamping surface 244. Figure 3 As shown, the engaging surface 244 extends vertically. Figure 2 、 Figure 3 、 Figure 6 As shown, the card surface 244 abuts against the side wall of the card interface 60 to prevent the separation member 200 from falling off the surgical instrument 100. Figure 3 As shown, the inclined surface 246 extends upward from the proximal end toward the distal end, where upward refers to the direction toward the opening of the card interface 60. Guided by the inclined surface 246, the second end 242 changes position during insertion into the insertion channel 50 due to the rotation of the engaging portion 240, allowing the engaging portion 222 and the engaging portion 240 of the separator 200 to be inserted into the insertion channel 50 more smoothly from the distal end toward the proximal end.

[0095] Second end 242 of engaging portion 240 further includes a top surface 248 disposed between engaging surface 244 and inclined surface 246. Top surface 248 has a certain width to enhance the structural reliability of second end 242. Top surface 248 can be a flat surface or an inclined surface 246. If top surface 248 is an inclined surface, the inclination angle of top surface 248 is preferably smaller than the inclination angle of inclined surface 246.

[0096] It should be noted that in this embodiment, the clamping portion 240 is integrally formed. Those skilled in the art can imagine that the various parts of the clamping portion 240 can be formed separately and connected through a specific connection method. Any solution that is the same or similar to that of this embodiment is covered within the scope of protection of the present invention.

[0097] As mentioned above, the mounting portion 220 of the separating member 200 includes a plug-in portion 222 for mounting the clamping portion 240. Figures 4 to 6 The plug-in portion 222 extends longitudinally, and correspondingly, the plug-in channel 50 extends from the distal end surface of the surgical instrument 100 in a direction toward the proximal end. Specifically, the plug-in channel 50 extends from the distal end surface of the pin seat 30 in a direction toward the proximal end.

[0098] As is well known to those skilled in the art, anvil 30 is provided with a longitudinally extending cutting groove 33, which accommodates a portion of the cutting member of surgical instrument 100 and guides the movement of the cutting member. Cutting groove 33 is centrally located and longitudinally extends through anvil 30. Insertion channel 50, card interface 60, and cutting groove 33 are interconnected and coaxially arranged, resulting in a neat structure.

[0099] The card interface 60 is communicated with the proximal end of the insertion channel 50 and passes through the side wall of the insertion channel 50. Specifically, the card interface 60 passes through the side wall of the anvil surface 31 of the anvil seat 30.

[0100] Therefore, when the separator 200 needs to be installed on the surgical instrument 100, the plug-in portion 222 of the separator 200 is aligned with the plug-in channel 50, and the separator 200 is pushed in the direction from the distal end to the proximal end. During the pushing process, the plug-in channel 50 abuts against the inclined surface 246 of the second end 242 of the clamping portion 240, so that the clamping portion 240 overcomes the elastic force provided by the support portion 250 and rotates until the second end 242 of the clamping portion 240 and the plug-in portion 222 are smoothly inserted into the plug-in channel 50. Continue to push the separator 200 until the second end 242 of the clamping portion 240 is aligned with the card interface 60. The second end 242 of the clamping portion 240 rotates in the opposite direction under the action of the elastic force provided by the support portion 250, and the second end 242 protrudes from the second side surface 227 of the plug-in portion 222 and is clamped into the card interface 60, and the separator 200 is installed in place.

[0101] The side wall of the insertion channel 50, specifically, the side wall of the insertion channel 50 located on the abutment surface 31 of the abutment seat 30 includes a first hollow portion 51 and a second hollow portion 52 connected to the card interface 60, the second hollow portion 52 is located at the distal end relative to the first hollow portion 51, the width of the second hollow portion 52 is greater than the width of the first hollow portion 51, and the width of the card interface 60 is greater than the width of the first hollow portion 51.

[0102] During the insertion of the separator 200, the wider second hollow portion 52 can make the insertion operation of the separator 200 easier. During the movement of the separator 200 in the second hollow portion 52, the clamping portion 240 does not need to overcome the elasticity of the support portion 250 to rotate, and the support portion 250 does not need to be deformed, which can extend the service life of the separator 200 and avoid the increase in resistance caused by the contact between the clamping portion 240 and the second hollow portion. When the inclined surface 246 of the second end 242 of the separator 200 contacts the first hollow portion 51, the second end 242 of the clamping portion 240 will overcome the elasticity of the support portion 250. The elasticity of the support portion 250 rotates and moves inside the first hollow portion 51. When the separator 200 moves to the point where the second end 242 of the clamping portion 240 is aligned with the clamping interface 60, since the width of the clamping interface 60 is greater than the width of the first hollow portion 51, the clamping surface 244 of the clamping portion 240 can abut against the side wall of the first hollow portion 51 adjacent to the clamping interface 60. Moreover, the second end 242 of the clamping portion 240 rotates in the opposite direction under the elastic force of the support portion 250 and protrudes from the second side surface 227, so that the second end 242 is smoothly clamped into the clamping interface 60, and the separator 200 is installed in place.

[0103] It can be seen that the reasonable design of the first hollow portion 51 and the second hollow portion 52 can not only extend the service life of the separator 200, but also make the installation operation of the separator 200 easy and convenient.

[0104] The length of the second hollow portion 52 is greater than that of the first hollow portion 51. In other words, when the longer second hollow portion 52 moves, the clamping portion 240 does not need to overcome the elasticity of the support portion 250 to rotate, and the support portion 250 does not deform, thereby extending the service life of the separator 200.

[0105] The width of the first hollow portion 51 is equal to the width of the cutting groove 33. The cutting groove 33, the card interface 60, the first hollow portion 51, and the second hollow portion 52 are coaxially arranged to ensure that the position of the separator 200 after installation is appropriate and does not deviate from the central axis, making it easier for doctors to operate the separator.

[0106] The second hollow portion 52 , the first hollow portion 51 , the card interface 60 , and even the cutting groove 33 form a channel groove extending from the distal end to the proximal end of the side wall of the insertion channel 50 .

[0107] A first wedge-shaped portion 39 is provided at the distal end of the anvil seat 30, and the first wedge-shaped portion 39 has a first inclined surface 38. A second wedge-shaped portion 239 is provided at the proximal end of the working portion 230, and the second wedge-shaped portion 239 has a second inclined surface 238. After the separator 200 is installed on the anvil seat 30, the first inclined surface 38 abuts against the second inclined surface 238.

[0108] The first inclined surface 38 abuts the second inclined surface 238, allowing the first wedge-shaped portion 39 and the second wedge-shaped portion 239 to overlap, making the separator 200 more securely mounted on the anvil 30. Furthermore, the first wedge-shaped portion 39 can make the distal end of the anvil 30 thinner than the rest of the anvil, while the second wedge-shaped portion 239 can make the proximal end of the working portion thinner than the rest of the anvil. In other words, even if the first wedge-shaped portion 39 and the second wedge-shaped portion 239 overlap, the dimensions of the joint will not be significantly increased. While this overlap ensures secure installation, it also prevents significant size increases, resulting in a very rational design.

[0109] The second hollow portion 52 is provided on the first inclined surface 38. The mounting portion 220 extends from the second inclined surface 238 in a direction toward the proximal end, and has a compact structure and a reasonable design.

[0110] The combined thickness of the first wedge portion 39 and the second wedge portion 239 is comparable to the thickness of the anvil 30 at the proximal end adjacent the first bevel 38 and / or the thickness of the separator at the distal end adjacent the second bevel 238 .

[0111] The thickness is comparable, that is, the thickness is roughly equal, so as to avoid the appearance of a step at the junction of the separator 200 and the nail seat 30, thereby avoiding scratching the tissue.

[0112] As mentioned above, the separating element 200 includes a mounting portion 220 and a working portion 230 , and the working portion 230 is used for peeling off tissue.

[0113] The working portion 230 includes a proximal end 231 and a distal end 232. The width of the working portion 230 gradually decreases from the proximal end 231 toward the distal end 232. When the working portion 230 is peeling tissue, the narrower distal end 232 preferentially contacts the tissue. The narrower distal end 232 can be easily inserted into the tissue and peel the target tissue away from other tissues, making the operation more convenient.

[0114] At least a portion of the working portion 230 extends in an arc from the proximal end 231 toward the distal end 232. The working portion 230 has an arcuately extending and concave working surface 234. The arcuately extending working surface 234 enables the working portion 230 to smoothly pass through the gap between the target tissue and other tissues during tissue separation, better guiding the end effector 18 through the gap between the target tissue and other tissues, and making the operation of the separating member 200 and the surgical instrument 100 more convenient.

[0115] The working portion 230 extends in an arc shape, the working surface 234 extends in an arc shape, and the back surface of the working piece also extends in an arc shape. The working portion 230 has a regular structure and a beautiful appearance.

[0116] The outer contour lines of the working portion 230 and the mounting portion 220 of the separator 200 have no obvious sharp corners, and all contour lines are rounded to prevent the sharp corners from cutting tissues.

[0117] As previously mentioned, the separator 200 is mounted on the distal end of the surgical instrument 100. The surgical instrument 100 has a mounting end for mounting the separator 200. The separator 200 also includes an elastic member 280, which abuts against the end surface of the mounting end. Specifically, the elastic member 280 abuts against the distal end surface of the anvil 30.

[0118] Since the distal end face of the mounting end is hard and the elastic member 280 is soft and deformable, when the elastic member 280 abuts against the distal end face of the mounting end, it can not only prevent the distal end face of the mounting end from scratching the tissue, but also reduce the risk of the tissue being clamped in the gap between the distal end face of the mounting end and the separator 200, avoiding unnecessary pulling on the tissue and thus avoiding damage to the tissue.

[0119] The outer surface of the elastic member 280 protrudes from the outer surface of the mounting end or is flush with the outer surface of the mounting end. Specifically, the anvil has an anvil surface 31 and a back surface 32. In this embodiment, preferably, the outer surface of the elastic member 280 is flush with or protrudes from the back surface 32 of the anvil 30. When peeling the target tissue from other tissues, since the mounting end on the side of the back surface 32 of the anvil 30 is prone to scratching other tissues, the outer surface of the elastic member 280 is flush with or protrudes from the back surface 32 of the nail magazine, which can avoid the distal end face of the mounting end from scratching the tissue to the greatest extent and minimize the risk of the tissue being clamped in the gap between the distal end face of the mounting end and the separator 200.

[0120] Separator 200 is provided with a slot 290. The mounting end has a first outer surface 91, and separator 200 has a second outer surface 202. When separator 200 is in the first state, slot 290 is located at the junction of first outer surface 91 and second outer surface 202, and elastic member 280 is disposed in slot 290. Slot 290 allows for better installation of elastic member 280 without affecting its functionality.

[0121] The outer surface of the elastic member 280 protrudes from the second outer surface 202 or is flush with the second outer surface 202. The narrow groove 290 can better install the elastic member 280, but there is a risk of scratching tissue at the proximal end and / or distal end of the narrow groove 290. By making the outer surface of the elastic member 280 protrude from the second outer surface 202 or be flush with the second outer surface 202, it is not only easier to install the elastic member 280, but also prevents tissue from being scratched.

[0122] The shape of the elastic member 280 matches the shape of the slot 290 to prevent tissue scratching to the greatest extent. The interference fit between the elastic member 280 and the slot 290 not only ensures a secure installation of the elastic member 280, but also facilitates the elastic member 280 to protrude from the adjacent surface, thereby preventing tissue scratching to the greatest extent.

[0123] The narrow groove 290 extends circumferentially, which can make the installation of the elastic member 280 more reliable.

[0124] The bottom surface of the narrow slot 290 is uneven. Specifically, the bottom surface of the narrow slot includes depressions and / or protrusions, which can increase the friction between the narrow slot 290 and the elastic member 280 and ensure that the elastic member 280 is reliably installed in the narrow slot 290.

[0125] The bottom surface of the narrow groove 290 is symmetrically arranged relative to the central symmetric plane in the longitudinal direction of the separator 200. The structure is regular, so that the elastic member 280 is evenly stressed and better plays the role of preventing tissue scratches.

[0126] In this embodiment, the elastic member 280 is a separately formed component that is manually installed in the slot 290. Those skilled in the art will appreciate that the elastic member 280 may also be formed by spraying plastic in the slot 290. Any solution that is the same or similar to that of this embodiment is encompassed within the scope of protection of the present invention.

[0127] Please combine Figures 7 to 13 This embodiment also provides a packaging box 300 for the separator 200, which can be accommodated in the packaging box 300. The packaging box 300 provides outer packaging for the separator 200, facilitating transportation and storage of the separator 200. The separator 200 and the packaging box 300 form an assembly that can be sold and purchased separately or in combination with the surgical instrument 100 to form a surgical kit. Regardless of the sales and purchase method, the separation unit 200 of this embodiment can be sold and purchased separately.

[0128] The packaging box 300 includes a receiving portion 320 for receiving the separator 200. The separator 200 can be received in the packaging box 300 by being inserted into the receiving portion 320. The packaging box 300 includes a shell 350. One side surface of the shell 350 is recessed inward to form an open receiving portion 320. The receiving portion 320 has an open end, which facilitates the separator 200 to be inserted into or removed from the packaging box 300 through the open end.

[0129] The receiving portion 320 has a closed end 330 spaced apart from the open end. The shape of the closed end 330 can match or not match the shape of the distal end 232 of the separator 200, as long as the closed end 330 can limit the insertion of the separator 200. Therefore, when the distal end 232 of the separator 200 abuts the closed end 330 of the receiving portion 320 during the insertion of the separator 200 into the receiving portion 320, the operator can sense that the separator 200 has been properly accommodated.

[0130] The receiving portion 320 is provided with a rib 324, and the rib 324 is provided with a guide surface 326. The separator 200 slides into the receiving portion 320 along the guide surface 326. The guide surface 326 can make the separator 200 more easily and accurately inserted into the receiving portion 320.

[0131] The rib 324 also has an abutment surface 328, which intersects the guide surface 326 and is arranged at an angle, specifically an obtuse angle. The abutment surface 328 is located closer to the closed end 330 of the receiving portion 320 relative to the guide surface 326, and the abutment surface 328 limits the position of the separator 200. Specifically, when the separator 200 is inserted into the receiving portion 320, the abutment surface 328 abuts against a portion of the working surface 234 of the separator 200, ensuring that the separator 200 is more securely received in the receiving portion 320.

[0132] It can be seen from this that the rib 324 can not only limit the size of the accommodating portion 320, but also guide the separation piece 200 to slide into the accommodating portion 320. After the separation piece 200 slides into the accommodating portion 320, the rib 324 can also limit the separation piece 200. The structural design is very reasonable.

[0133] See Figure 11 The surface of the receiving portion 320 is provided with a protrusion 322. The protrusion 322 supports the working portion 230 of the separator 200 and reduces the contact area between the working portion 230 and the receiving portion 320, thereby easing the insertion and removal of the separator 200. In this embodiment, the protrusion 322 extends longitudinally and is generally strip-shaped. The protrusion 322 extends in the longitudinal direction. Those skilled in the art will appreciate that other shapes of the protrusion 322 are also possible.

[0134] As mentioned above, the separator 200 includes an elastic member 280 that abuts against the end surface of the mounting end of the surgical instrument 100. Preferably, the outer surface of the elastic member 280 protrudes from the outer surface of the working portion 230 of the separator 200, thereby elastically abutting against the inner surface of the receiving portion 320.

[0135] During the process of inserting the separator 200 into the receiving portion 320 of the packaging box 300, when the elastic member 280 elastically abuts against the inner surface of the receiving portion 320, the operator can sense the effect of this damping, which provides the operator with operational feedback, and the operator can use this feedback to confirm whether the separator 200 is properly accommodated. That is, in addition to the aforementioned closed end 330 allowing the operator to sense that the separator 200 has been inserted into place, the elastic abutment of the elastic member 280 against the inner surface of the receiving portion 320 further provides feedback to the operator, further enhancing the operating experience. Moreover, the friction between the elastic member 280 and the inner surface of the receiving portion 320 can prevent the separator 200 from falling off from the receiving portion 320.

[0136] As mentioned above, the separator 200 is detachably connected to the surgical instrument 100 through a mating mechanism, and the separator 200 switches between a first state and a second state. In the first state, the separator 200 is connected to the surgical instrument 100; in the second state, the separator 200 is detached from the surgical instrument 100.

[0137] In this embodiment, preferably, the packaging box 300 can not only accommodate the separator 200, but also switch the separator 200 between the first state and the second state. In other words, the packaging box 300 not only provides packaging for the separator 200, but also serves as a tool for disassembling the separator 200 from the surgical instrument 100, which is a very clever design.

[0138] Specifically, the packaging box 300 includes an operating member 340, which acts on the matching mechanism to switch the separating member 200 from the first state to the second state. More specifically, the operating portion 342 acts on the locking mechanism to switch the separating member 200 from the first state to the second state.

[0139] The operating member 340 includes an operating portion 342 and a driving portion 348 connected to each other. The operating portion 342 is for an operator to press, and the driving portion 348 acts on the locking mechanism to switch the separating member 200 from the first state to the second state.

[0140] The operating portion 342 performs a first movement to drive the driving portion 348 to perform a second movement so as to switch the separating member 200 from the first state to the second state. The first movement includes rotation; and the second movement includes rotation.

[0141] The packaging box 300 includes a shell 350, which is partially recessed inward to form a receiving portion 320. The shell 350 includes a first side wall 351 and a second side wall 352 surrounding the receiving portion 320. There is a gap 353 between the first side wall 351 and the second side wall 352, and the first side wall 351 forms an operating portion 342. The gap 353 extends longitudinally from one end of the shell 350 in a direction toward the other end, and the extension length of the gap 353 is less than the extension length of the shell 350. Due to the existence of the gap 353, the first side wall 351 can move relative to the second side wall 352, thereby driving the driving portion 348 to move and ultimately act on the separator 200 to switch the separator 200 from the first state to the second state. Moreover, the first side wall 351 is a part of the shell 350, and a part of the shell 350 forms the operating portion 342. There is no need to set up other additional components to form the operating portion 342, and the structure is simple and the design is reasonable.

[0142] Rotation of the operating portion 342 drives the driving portion 348. Specifically, the first side wall 351 includes a connecting end 344 and a free end 346. The driving portion 348 is connected to the free end 346. The free end 346 rotates around the junction between the connecting end 344 and the second side wall, driving the driving portion 348. This eliminates the need for additional components, resulting in a simple structure and easy operation.

[0143] The rotation axis of the free end 346 is perpendicular to the central symmetry plane in the longitudinal direction of the packaging box 300. The rotation axis of the free end 346 is also parallel to the rotation axis of the clamping portion 240. This can make the assembly structure formed by the separator 200 and the packaging box 300 regular.

[0144] The connecting end 344 of the operating portion 342 is made of an elastic material. Optionally, the operating portion 342 is made of an elastic material as a whole. Therefore, when the free end 346 is pressed, the connecting end 344 is deformed so that the free end 346 rotates around the junction of the connecting end 344 and the second side wall. Thus, the doctor overcomes the elastic force of the operating portion 342 itself and drives the driving portion 348 to move, so that the separating member 200 can be switched from the first state to the second state. By utilizing the elasticity of the operating portion 342 itself, the structure of the packaging box 300 can be simpler. The elasticity of the operating portion 342 itself enables the free end 346 to remain in a tilted state without being subjected to external forces, such as Figure 8 、 Figure 11 、 Figure 12 shown.

[0145] The operating portion 342 and the driving portion 348 both extend longitudinally, with the operating portion 342 and the driving portion 348 extending perpendicularly to each other. The longitudinally extending operating portion 342 and the driving portion 348 extending perpendicularly to each other provide sufficient travel for the driving portion 348 to effectively drive the engaging portion 240, thereby smoothly separating the separating member 200 from the surgical instrument 100.

[0146] The operating portion 342 is connected to the driving portion 348, and the two cooperate to complete the abutment of the clamping portion 240. The operating portion 342 and the driving portion 348 are two independent components. Specifically, the driving portion 348 is a pin that tightly fits into the hole in the operating portion 342 to connect the driving portion 348 and the operating portion 342. Those skilled in the art will appreciate that the operating portion 342 and the driving portion 348 can also be formed as a single piece.

[0147] like Figure 11 、 12As shown, the housing 350 is provided with an opening 354 through which the drive portion 348 passes. Opening 354 is arranged opposite the drive portion 348. Thus, when the drive portion 348 is installed, the drive portion 348 passes through opening 354 and connects to the operating portion 342. Opening 354 also facilitates the insertion of an installation tool to apply force to the drive portion 348, resulting in a rational structural design. The drive portion 348 is connected to the free end 346 of the operating portion 342, and correspondingly, the opening 354 is opposite the free end 346 of the operating portion 342, resulting in a rational layout.

[0148] The width of the driving portion 348 is smaller than the width of the channel groove (including the second hollow portion 52, the first hollow portion 51, and the engaging interface 60) on the anvil 30. During the separation process of the separating member 200 and the surgical instrument 100, the driving portion 348 can move within the channel groove and maintain the state of pressing the second end 242 of the engaging portion 240.

[0149] It can be seen from this that the operating member 340 acts on the locking mechanism to switch the separating member 200 from the first state to the second state.

[0150] The distal end of the accommodating portion 320 is closed to form a closed end 330. When the separator 200 is installed on the surgical instrument 100, the packaging box 300 containing the separator 200 drives the separator 200 to move toward the surgical instrument 100, and the closed end 330 pushes the separator 200 to be inserted into the surgical instrument 100. Therefore, the closed end 330 of the accommodating portion 320 of the packaging box 300 pushes the separator 200 to switch from the second state to the first state.

[0151] The packaging box 300 is made of a transparent material, which is not only beautiful, but also very helpful for the operator to observe whether the disassembly and assembly operation is in place when the packaging box 300 is used to disassemble and assemble the separation component 200.

[0152] The following describes the application scenarios of the separator 200 of this embodiment.

[0153] After leaving the factory and before being used, the separator 200 is located in the accommodating portion 320 of the packaging box 300. The elastic member 280 on the separator 200 elastically abuts against the inner surface of the accommodating portion 320, and the separator 200 is retained in the packaging box 300 under the elastic force of the elastic member 280.

[0154] When the doctor needs to use the separator 200 to peel off tissue during the use of the surgical instrument 100, the doctor holds the shell 350 of the packaging box 300, aligns the mounting portion 220 of the separator 200 with the insertion channel 50 set on the pin holder 30 of the end actuator 18 of the surgical instrument 100, and pushes the packaging box 300 in the direction toward the surgical instrument 100. During the pushing process, the insertion portion 222 and the clamping portion 240 of the separator 200 move along the insertion channel 50 until the second end 242 of the clamping portion 240 is aligned with the card interface 60 and is clamped into the card interface 60. At this time, the separator 200 has been installed on the surgical instrument 100.

[0155] Subsequently, the doctor overcomes the friction between the elastic member 280 and the inner surface of the receiving portion 320 caused by the elastic force of the elastic member 280 and pulls the packaging box 300 away from the surgical instrument 100, thereby separating the packaging box 300 from the separator 200. The doctor can then use the separator 200 to peel off the target tissue. Specifically, the narrow distal end 232 of the working portion 230 of the separator 200 is aligned with the boundary between the target tissue and other tissues, and the surgical instrument 100 and separator 200 are pushed forward until the separator 200 peels off the target tissue from the other tissues.

[0156] After the separator 200 peels the target tissue from other tissues, the doctor moves the surgical instrument 100 forward toward the distal end 232 so that the target tissue enters between the nail support 30 and the nail magazine seat. Then, the doctor can use the surgical instrument 100 to cut and suture the target tissue.

[0157] When the doctor no longer needs to peel off the tissue during the use of the surgical instrument 100, the separator 200 can be removed from the surgical instrument 100 to prevent the separator 200 from taking up space and affecting other operations of the surgical instrument 100 when the separator 200 is not needed. Specifically, the doctor aligns the packaging box 300 with the separator 200 and moves it so that the separator 200 is accommodated in the accommodating portion 320 of the packaging box 300. Then, the doctor presses the free end 346 of the operating portion 342, and the free end 346 rotates around the connecting end 344 to drive the driving portion 348 to rotate until the driving portion 348 contacts the inclined surface 246 or the top surface 248 of the second end 242 of the clamping portion 240. The doctor continues to press the free end 346 of the operating portion 342, and the driving portion 348 drives the second end 242 of the clamping portion 240. 242 overcomes the force of the support portion 250 and rotates until the second end 242 of the clamping portion 240 is disengaged from the clamping interface 60. Then, the doctor pulls the packaging box 300 in the direction away from the surgical instrument 100, and the packaging box 300 drives the plug-in portion 222 of the separator 200 to disengage from the plug-in channel 50, so that the separator 200 is disengaged from the surgical instrument 100. After being disengaged from the surgical instrument 100, the separator 200 is located in the receiving portion 320 of the packaging box 300, returning to the state before being used after leaving the factory. It should be noted that after the driving part 348 disengages the second end 242 of the clamping part 240 from the clamping interface, the driving part 348 maintains the state of pressing the second end 242 of the clamping part 240, that is, during the process of disengaging the separating piece 200 from the surgical instrument 100, the driving part 348 always presses the second end 242 of the clamping part 240 and applies force to the second end 242, and the driving part 348 moves in the channel groove, and finally causes the packaging box 300 to drive the separating piece 200 to disengage from the surgical instrument 100.

[0158] Figures 16 and 17 A second embodiment of the present invention shows a separating piece 200a for use with a surgical instrument.

[0159] The following description focuses on the differences between the separator 200 a of this embodiment and the separator of the first embodiment.

[0160] In the first embodiment, the elastic member extends circumferentially into a ring shape, and the ring-shaped elastic member is installed in the narrow groove between the separating member and the distal end surface of the nail seat.

[0161] In this embodiment, the elastic member 280a is bag-shaped, with at least a portion of the working portion 230a housed within the elastic member 280a. This portion of the working portion 230a has the same shape as the elastic member 280a. Specifically, the entire working portion 230a, from its distal end to the portion adjacent to the surgical instrument mounting end, is housed within the elastic member 280a. The proximal opening of the elastic member 280a abuts the distal surface of the mounting end, preventing the distal surface from scratching tissue.

[0162] Figure 18A third embodiment of the present invention provides a separating piece for use with a surgical instrument.

[0163] The following description focuses on the differences between the separator 200 b of this embodiment and the separator of the first embodiment.

[0164] In the first embodiment, the first end of the clamping portion includes a rotating shaft, which is integrally formed with other parts of the clamping portion. An open axial hole is provided on the plug-in portion, and the rotating shaft is partially accommodated in the axial hole. The supporting portion covers the open part of the axial hole, so that the second end of the clamping portion can rotate around the rotating shaft.

[0165] In this embodiment, the separator 200b includes an independent rotating shaft 234b. The first end of the engaging portion 240b is provided with a pin hole 299b through which the rotating shaft 234b passes. The mounting portion of the separator 200b is provided with circular holes 298b corresponding to the ends of the pin holes 299b. The rotating shaft 234b passes through the first circular hole 298b, the pin hole 299b, and the second circular hole 298b in sequence, so that the first end of the engaging portion 240b is rotatably mounted on the mounting portion. The rotating shaft 234b is tightly fitted into the first circular hole 298b and / or the second circular hole 298b to prevent it from falling out.

[0166] In addition, in this embodiment, the shape of the elastic member 280b of the separator 200b and the matching mechanism between the elastic member 280b and the working portion 230b are the same as those in the second embodiment and are not described in detail.

[0167] Figures 19 to 20 A fourth embodiment of the present invention provides a separating piece for use with a surgical instrument.

[0168] The following description focuses on the differences between the separator 200 c of this embodiment and the separator of the third embodiment.

[0169] In the third embodiment, the mounting portion of the separator is provided with a connecting portion on the distal side adjacent to the first end of the clamping portion, the first part of the supporting portion is connected to the connecting portion, the supporting portion extends from the connecting portion toward the proximal end, and the supporting portion applies force to the clamping portion relative to the second part located at the proximal end, so that the clamping portion has a tendency to be clamped into the clamping interface of the surgical instrument.

[0170] In this embodiment, the support portion 250c is arranged near the proximal end of the clamping portion 240c, and the proximal end of the support portion 250c is connected to the mounting portion 220c by welding or the like. The support portion 250c is elastic, and the distal end of the support portion 250c applies force to the second end of the clamping portion 240c, so that the clamping portion 240c has a tendency to be clamped into the clamping interface 60c on the surgical instrument.

[0171] Figures 21 to 22 A fifth embodiment of the present invention shows a separating piece for use with a surgical instrument.

[0172] The following description focuses on the differences between the separator 200d of this embodiment and the separator of the second embodiment.

[0173] In the second embodiment, the clamping portion itself has no elasticity, and the supporting portion provides elastic force to the clamping portion so that the clamping portion has a tendency to be clamped into the clamping interface of the surgical instrument.

[0174] In this embodiment, the clamping portion 240d itself is at least partially made of elastic material, and the clamping portion 240d itself has a tendency to be clamped into the clamping interface of the surgical instrument. In other words, no additional elastic body is provided to provide elastic force for the clamping portion 240d, and the structure is simpler.

[0175] In this embodiment, the proximal end of the engaging portion 240d is connected to the mounting portion 220d of the separator 200d. When the engaging portion 240d deforms, the distal end of the engaging portion 240d rotates about the proximal end, thereby engaging or disengaging the engaging portion 240d from the card interface, ultimately switching the separator 200d between the first and second states. It should be noted that the proximal end does not have an additional rotating shaft; the distal end rotates about the connection between the proximal end and the mounting portion 220d.

[0176] It can be seen from this that the separator 200d of this embodiment has a simpler structure and lower cost.

[0177] Figures 23 to 26 A sixth embodiment of the present invention provides a separating piece for use with a surgical instrument.

[0178] The following description focuses on the differences between the separator 200e of this embodiment and the separator of the fifth embodiment.

[0179] In the fifth embodiment, the clamping portion is provided on the front side (second side surface) of the mounting portion of the separating piece, and the clamping portion cooperates with a clamping interface provided on the surgical instrument.

[0180] In this embodiment, the clamping portion 240e is arranged on the back side of the mounting portion 220e of the separating piece 200e, and the clamping interface 60e is arranged on the back side 32e of the anvil seat 30e. The clamping portion 240e arranged on the back side of the mounting portion 220e cooperates with the clamping interface 60e arranged on the back side 32e of the anvil seat 30e to realize the detachable connection between the separating piece 200e and the surgical instrument.

[0181] Because the card interface 60e is located on the back side 32e of the anvil 30e and is not affected by the nail magazine seat, the operating member of the packaging box can be operated on the back side 32e of the anvil 30e to install and remove the separating member 200e, which provides a larger operating space and is more convenient to operate.

[0182] The distal end of the clamping portion 240e is connected to the separating piece 200e by welding or other methods. The clamping portion 240e itself is elastic, thereby realizing switching between the first state and the second state, which will not be described in detail.

[0183] Figures 27 to 29 A seventh embodiment of the present invention shows a separating piece for use with a surgical instrument.

[0184] The following description focuses on the differences between the separator 200f of this embodiment and the separator of the fifth embodiment.

[0185] In the fifth embodiment, the proximal end of the clamping portion is fixed to the mounting portion of the separating piece, and the distal end of the clamping portion is matched with the clamping interface of the surgical instrument.

[0186] In this embodiment, the distal end of the clamping portion 240f is fixed to the portion of the separator 200f other than the clamping portion 240f, and the proximal end of the clamping portion 240f is mated with the clamping interface of the surgical instrument.

[0187] In this embodiment, the separator 200f is provided with a receiving cavity 297f. The receiving cavity 297f extends from the proximal end of the mounting portion toward the working portion, with a portion of the receiving cavity 297f located within the working portion. A vertically extending mounting shaft 296f is provided at the distal end of the receiving cavity 297f. The engaging portion 240f is provided with a mounting hole that fits over the mounting shaft 296f. The mounting hole and the mounting shaft 296f cooperate to mate the distal end of the engaging portion 240f with the separator 200f. The proximal end of the engaging portion 240f can rotate relative to the distal end to engage and disengage with the card interface.

[0188] It should be noted that in this embodiment, although the mounting shaft 296f is a cylindrical shaft and the mounting hole is a circular hole, the clamping portion 240f does not rotate around the axis of the mounting shaft 296f. The rotation axis of the clamping portion 240f is the same as that in the aforementioned embodiment, and the rotation axis of the clamping portion 240f is parallel to the working surface of the separator 200f.

[0189] In summary, in the present invention, the surgeon first uses the separator to separate the target tissue from other tissues. The surgeon then moves the surgical instrument forward, allowing the target tissue to enter between the staple cartridge seat and the anvil seat, and then operates the surgical instrument to cut and suture the target tissue. Using the separator to separate the target tissue makes the surgeon's operation easier and more convenient. Furthermore, the snap-fit ​​mechanism allows the separator to elastically engage with the surgical instrument, ensuring a reliable connection and easy assembly and disassembly.

[0190] In the present invention, the elastic body abuts against the end face of the mounting end, which can avoid the distal end face of the mounting end from scratching the tissue to the greatest extent and minimize the risk of tissue being clamped in the gap between the distal end face of the mounting end and the separator.

[0191] In the present invention, the packaging box not only provides packaging for the separators but also serves as a tool for disassembling and assembling the separators relative to the surgical instrument, which is a very clever design. In the present invention, the elastic body not only prevents scratching of tissue but also prevents the separators from accidentally falling out when they are housed in the packaging box.

[0192] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0193] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A separating member for a surgical instrument, the separating member being used for peeling off tissue, characterized in that: The separator is detachably mounted on the surgical instrument, and the surgical instrument has a mounting end for mounting the separator, and the separator includes an elastic member; when the separator is mounted on the surgical instrument, the elastic member abuts against the end surface of the mounting end; the elastic member extends circumferentially into a ring shape, and the outer surface of the elastic member protrudes from the outer surface of the mounting end, or the outer surface of the elastic member is flush with the outer surface of the mounting end.

2. The separator according to claim 1, wherein: The outer surface of the elastic member protrudes from the outer surface of the separation body, or the outer surface of the elastic member is flush with the outer surface of the separation body.

3. The separator according to claim 1, wherein: The separating member includes a narrow slot, and the elastic member is arranged in the narrow slot; the mounting end has a first outer surface, and the separating member has a second outer surface, and the narrow slot is located at the junction of the first outer surface and the second outer surface.

4. The separator according to claim 3, wherein: The elastic member matches the shape of the slot.

5. The separator according to claim 3, wherein: The elastic member is interference-fitted with the narrow slot.

6. The separator according to claim 3, wherein: The slot extends circumferentially.

7. The separator according to claim 3, wherein: The bottom surface of the slot includes depressions and / or protrusions.

8. The separator according to claim 3, wherein: The bottom surface of the narrow groove is symmetrically arranged relative to the central symmetry plane in the longitudinal direction of the separator.

9. The separator according to claim 1, wherein: The elastic member is an independently formed component, or the elastic member is provided on the separation member by injection molding.

10. The separator according to claim 1, wherein: The surgical instrument is a stapler; the mounting end is the distal end of an anvil of an end effector of the stapler.

11. The separator according to claim 1, wherein: The separator includes a mounting portion and a working portion connected to each other; the mounting portion is used for detachably mounting the separator and the surgical instrument; the working portion includes a proximal end and a distal end, and the width of the working portion gradually decreases along the direction from the proximal end to the distal end.

12. The separator according to claim 1, wherein: The separating piece comprises a mounting portion and a working portion which are connected to each other; the mounting portion is used for detachably mounting the separating piece and the surgical instrument; and the working portion has a working surface extending in an arc.

13. The separator according to claim 12, wherein: The working surface is a concave arc surface.

14. An assembly for a surgical instrument, comprising a separator and a packaging box, wherein the packaging box comprises a receiving portion for receiving the separator, wherein: The separator is the separator according to any one of claims 1 to 13.

15. The assembly according to claim 14, characterized in that: When the separating member is received in the receiving portion, the elastic member elastically contacts the inner surface of the receiving portion.

16. The assembly according to claim 14, characterized in that: The separator and the surgical instrument are switched between a first state and a second state through a snap-fit ​​mechanism. In the first state, the separator is connected to the surgical instrument; in the second state, the separator is disconnected from the surgical instrument. The packaging box also includes an operating member, which drives the snap-fit ​​mechanism to drive the separator to switch from the first state to the second state.

17. The assembly according to claim 16, characterized in that: The clamping mechanism includes a clamping portion provided on the separating piece and a clamping interface provided on the surgical instrument. The clamping portion and the clamping interface are elastically matched or disengaged to enable the separating piece and the surgical instrument to switch between a first state and a second state.

18. A surgical kit, characterized in that :The surgical kit includes a surgical instrument and an assembly as described in any one of claims 14 to 17, and the separation piece is used to be mounted on the surgical instrument to peel off tissue.

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