Nail abutting plate assembly and anastomat

Abstract

The utility model provides a nail abutting plate assembly and an anastomat, the nail abutting plate assembly comprises a nail abutting plate which extends along a first direction and is provided with a first surface and a second surface which are deviated from each other in the thickness direction of the nail abutting plate, and the end part of the nail abutting plate is provided with a clamping groove; the first patch detachably covers the first surface; the first end cap is detachably connected with the nail abutting plate and is configured to be clamped with the clamping groove so as to clamp the first patch, the first end cap comprises a bent part, and the included angle between the extending direction of the bent part and the plane where the second face is located ranges from 40 degrees to 80 degrees. The nail abutting plate assembly is provided with the first end cap, the first patch is pressed or released through connection of the first end cap and the nail abutting plate, so that the purpose of effectively installing or detaching the second patch is achieved, and in the using process of the anastomat, the nail abutting plate assembly is not prone to being damaged. The bending part of the first end cap can enable the nail abutting plate assembly to be attached to a nail bin assembly of the anastomat, and a patch can be clamped easily.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of medical devices, and in particular, to a butt plate assembly and an anastomat. BACKGROUND

[0002] The application of anastomat greatly promotes the development of modern surgery and minimally invasive surgery, which is of milestone significance. The anastomat can be used for cutting and stapling the tissue at the same time through anastomotic staples, and is widely used for cutting, suturing or anastomosis of organ tissues such as intestine, stomach, lung and pancreas. However, the hard stapling of anastomotic staples cannot completely avoid the leakage and bleeding of the anastomotic tissue. This is because the anastomotic staple is a rigid structure, which cannot completely match the flexibility of soft tissue, resulting in leakage and bleeding of the staple hole. In addition, due to the difference in the nature of soft tissue in different regions, some soft tissues such as lung have low strength, which may have the risk of tearing of the anastomotic port.

[0003] To solve the above problems, the anastomotic port reinforcing patch can be used in combination with the anastomat, so that the anastomat cuts and closes the wound surface at the same time, fixes the reinforcing patch on the wound surface, blocks the anastomotic staple hole, and improves the strength of the anastomotic port, thereby avoiding the leakage and bleeding of the anastomotic port. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present disclosure is to provide a butt plate assembly and an anastomat for the technical problems in the related art. The butt plate assembly comprises:

[0005] a butt plate extending along a first direction and having a first face and a second face facing away from each other in the thickness direction of the butt plate, and an end portion of the butt plate is provided with a clamping groove;

[0006] a first patch detachably covering the first face;

[0007] a first end cap detachably connected with the butt plate and configured to be clamped with the clamping groove to hold the first patch,

[0008] wherein the first end cap comprises a bending portion, and an included angle between an extension direction of the bending portion and a plane where the first face is located is 40°-80°.

[0009] In some embodiments, the first end cap comprises:

[0010] a first base body;

[0011] a clamping member arranged on the first base body and extending towards the butt plate, and configured to be inserted into the clamping groove to fix the first patch.

[0012] In some embodiments, the bending portion has a width away from one end of the clamping piece in a second direction smaller than a width of the first base body, wherein the first direction is perpendicular to the second direction.

[0013] In some embodiments, the bending portion has a distance from one end of the clamping piece to a plane where the first surface is located of 20-30 mm.

[0014] In some embodiments, the bending portion has a first inclined surface, and an included angle between the first inclined surface and the first surface is 130-160°.

[0015] In some embodiments,

[0016] The bending portion has a rounded structure away from one end of the clamping piece.

[0017] In some embodiments, the first end cap further comprises:

[0018] A first limiting piece arranged on the first base body and extending in the same direction as the clamping piece, for limiting a movement range of the first end cap.

[0019] In some embodiments, the first end cap has a double-layer structure, and a gap is formed between the clamping piece and the first limiting piece.

[0020] In some embodiments, the nail-stopping plate further comprises:

[0021] A buckling portion arranged on a second surface of the nail-stopping plate, for clamping with the first limiting piece,

[0022] Wherein, the first end cap has a first position where the first end cap is released from the nail-stopping plate, and a second position where the first end cap is connected with the nail-stopping plate, when the first end cap is in the first position, a gap is formed between the clamping piece and the clamping groove, and the first end cap is released from the nail-stopping plate.

[0023] When the first end cap is in the second position, the first limiting piece clamps with the buckling portion, and the first end cap clamps with the nail-stopping plate.

[0024] The second aspect of the present disclosure provides an anastomat, comprising: the nail-stopping plate assembly in the first aspect of the present disclosure;

[0025] A cartridge base body extending in the same direction as the nail-stopping plate assembly, configured to accommodate an anastomosis nail assembly;

[0026] A second patch detachably connected with the cartridge base body, configured to cover the anastomosis nail assembly;

[0027] A second end cap movably connected with the cartridge base body, configured to clamp the second patch.

[0028] Compared with the related art, the above scheme of the embodiments of the present disclosure has at least the following beneficial effects:

[0029] The first end cap of the present disclosure is provided, and the first patch is compressed or released through the connection of the first end cap and the staple plate, so as to effectively install or dismount the second patch; during the use of the anastomat, the bending part of the first end cap can make the staple plate assembly fit the cartridge assembly of the anastomat, which is beneficial to clamp the patch, has the advantages of simple structure and convenient operation, and can also improve the safety and reliability of the instrument.

[0030] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0031] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained from these drawings without creative labor for those skilled in the art. In the drawings:

[0032] Figure 1 is a structural schematic diagram of a staple plate assembly without a first patch according to an exemplary embodiment.

[0033] Figure 2 is a structural schematic diagram of a staple plate assembly with a first patch according to an exemplary embodiment.

[0034] Figure 3 is a structural schematic diagram of a first patch according to an exemplary embodiment

[0035] Figure 4 is a partial enlarged view of a staple plate according to an exemplary embodiment.

[0036] Figure 5 is a partial enlarged view of a first end cap assembled on a staple plate according to an exemplary embodiment.

[0037] Figure 6 is a structural schematic diagram of a first end cap according to an exemplary embodiment.

[0038] Figure 7 is a partial sectional view of a first end cap assembled on a staple plate according to an exemplary embodiment.

[0039] Figure 8Fig. 1 is a structural schematic diagram of an anastomat according to an exemplary embodiment.

[0040] Figure 9 Fig. 2 is a structural schematic diagram of a staple cartridge assembly according to an exemplary embodiment.

[0041] Figure 10 Fig. 3 is a structural schematic diagram of a second end cap according to an exemplary embodiment.

[0042] Reference Signs:

[0043] stapling plate 100, clamping groove 101, stapling groove 102, patch hook 110, clamping part 120, connecting structure 121, first limiting part 122;

[0044] first patch 200, mounting hole 201, connecting part 210, patch free end 221, patch fixed end 222;

[0045] first end cap 300, first base 310, clamping part 311, bending part 312, first inclined surface 313, edge part 320, first limiting groove 321, first limiting part 330, first limiting part end 331, stopping part 332, second limiting part 340, buckling part 350;

[0046] stapling plate assembly 1000, staple cartridge assembly 2000;

[0047] staple cartridge base 2100, second inclined surface 2110, second patch 2200, second end cap 2300, buckle cap 2310;

[0048] anastomat body 3000. DETAILED DESCRIPTION

[0049] In order to make the purposes, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure and not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present disclosure.

[0050] The terms used in the embodiments of the present disclosure are merely for the purpose of describing particular embodiments and are not intended to limit the present disclosure. The singular forms "a", "an" and "the" used in the embodiments of the present disclosure and the appended claims are intended to include the plural forms, unless the context clearly indicates otherwise. "Plural" generally includes at least two, and other quantifiers are similar.

[0051] It should be understood that, although the terms first, second, third, etc. can be employed in describing the embodiments of the disclosure, these are not intended to denote or imply relative importance. These terms are merely used to identify one feature from another. For example, a first could be termed a second, and, similarly, a second could be termed a first, without departing from the scope of the embodiments of the disclosure. Furthermore, the terms "first", "second", "third", etc. are used only to describe the embodiments and do not indicate or imply a relative importance.

[0052] It should be understood that the term "and / or" used herein only describes an association relationship of associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " herein generally represents that the associated objects before and after are in an "or" relationship. The singular forms "a", "said" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0053] It should be further understood that the terms "center", "longitudinal", "transverse", "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0054] In the description of the present disclosure, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0055] Depending on the context, the word "if" as used herein can be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting". Similarly, depending on the context, the phrase "if it is determined" or "if (a stated condition or event) is detected" can be interpreted as "when it is determined" or "in response to determining" or "when (a stated condition or event) is detected" or "in response to detecting (a stated condition or event)".

[0056] It is also to be noted that the terms "comprising", "comprises" or any other variant thereof are intended to cover a non-exclusive inclusion, such that a product or an apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such product or apparatus. An element proceeded by "comprises a" does not, without further constraints, exclude the presence of additional identical elements in the product or article of manufacture that includes the recited element.

[0057] In the related art, the anastomat is usually clamped by the anvil assembly and the staple cartridge assembly during use to suture the anastomotic stoma of the biological tissue. In this process, since the biological tissue itself has a certain thickness, the position away from the clamping rotation center is not easy to be clamped tightly, or the clamping force of the end of the anastomat away from the rotation center is small under the clamping effect of the anvil assembly and the staple cartridge assembly.

[0058] The present disclosure provides an anvil plate assembly and an anastomat. The anvil plate assembly comprises an anvil plate extending in a first direction and having a first face and a second face facing away from each other in the thickness direction of the anvil plate, and an end portion of the anvil plate is provided with a clamping groove; a first patch detachably covering the first face; and a first end cap detachably connected with the anvil plate and configured to be clamped with the clamping groove to clamp the first patch, wherein the first end cap comprises a bending portion, and an included angle between an extension direction of the bending portion and a plane where the second face is located is 40°-80°.

[0059] The anvil plate assembly provided by the present disclosure has a first end cap, and the first patch is compressed or released by the connection of the first end cap and the anvil plate, so as to effectively mount or dismount the second patch. In the use process of the anastomat, the bending portion of the first end cap can make the anvil plate assembly fit the staple cartridge assembly of the anastomat, which is beneficial to clamping the patch.

[0060] The optional embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0061] A first aspect of the embodiments of the present disclosure provides an anvil plate assembly 1000, which comprises an anvil plate 100, a first patch 200, and a first end cap 300. As shown in Figure 1As shown, in order to more clearly describe the behavior of the staple holding plate assembly 1000, the following directional definitions are made with respect to the staple holding plate assembly 1000: a front-rear axis X, a lateral axis Y, and a central vertical axis Z. The opposite direction of the arrow along the front-rear axis X is the backward movement direction of the normal operation of the staple holding plate assembly 1000, which is marked as "forward", and the direction of the arrow along the front-rear axis X is the forward direction of the normal operation of the staple holding plate assembly 1000, which is marked as "backward", wherein the direction of the front-rear axis X is the first direction. The lateral axis Y is substantially along the direction of the width of the staple holding plate assembly 1000, the opposite direction of the arrow along the lateral axis Y is marked as "right", and the direction of the arrow along the lateral axis Y is marked as "left", wherein the direction of the lateral axis Y is the second direction. The vertical axis Z is along the vertical direction of the mobile device, the opposite direction of the arrow along the vertical axis Z is marked as "down", and the direction of the arrow along the vertical axis Z is marked as "up", wherein the direction of the vertical axis Z is the third direction.

[0062] In some embodiments, the staple holding plate 100 extends along a first direction, has a first surface and a second surface facing away from each other in the thickness direction of the staple holding plate 100, and a plurality of staple grooves 102 for deforming the anastomosis staples are arranged on the first surface. Figure 2 As shown, a patch hook 110 is further arranged on the first surface, which is used to accurately mount the first patch 200 to the staple holding plate 100, and the first patch 200 can accurately cover the staple grooves 102 so that the anastomosis staples can accurately staple the first patch 200 to the human tissue at the anastomosis.

[0063] It should be noted that the patch hook 110 can be provided with two or more, and in the disclosed figures, only two patch hooks 110 are provided on the staple holding plate 100, but the present disclosure is not limited thereto.

[0064] In some embodiments, in the first direction, the lengths of the first surface and the second surface of the staple holding plate 100 are different, and the length of the second surface is greater than that of the first surface. Figure 4 As shown, a clamping groove 101 is arranged at the end of the first surface, which is configured as a wedge-shaped structure and is used to accommodate at least part of the first patch 200.

[0065] In some embodiments, the first patch 200 can be an axisymmetric structure, which is sleeved on the patch hook 110 and covers the staple grooves 102. Figure 2 , Figure 3As shown, the first patch 200 is configured as a strip-shaped structure, having a patch fixed end 222 and a patch free end 221. The first patch 200 is provided with a mounting hole 201 adjacent to the patch fixed end 222, which is adapted to pass through the patch hook 110, so as to accurately mount the first patch 200 on the tacking plate 100, ensure full coverage of the first patch 200 on the first surface of the tacking plate 100, and avoid direct contact of the tacking plate 100 or the anastomosis nail with the human tissue. When the first patch 200 is laid flat on the first surface, at least part of the patch free end 221 extends towards the end of the tacking plate 100 and covers the clamping groove 101, that is, the distance from the patch free end 221 to the patch hook 110 is greater than the distance from the tacking groove 102 to the patch hook 110.

[0066] Further, the mounting hole 201 is provided with a connecting portion 210 inside, which is used to reinforce the mounting hole 201. On the one hand, it can improve the stability of the connection between the first patch 200 and the patch hook 110, and on the other hand, it can also avoid excessive deformation of the mounting hole 201 during the process of pulling or cutting the first patch 200, which may cause the first patch 200 to warp due to excessive deformation.

[0067] It should be noted that the mounting hole 201 can be circular or elliptical, or rectangular, diamond-shaped, or other polygons, or a combination of the above shapes. The present disclosure does not limit the shape of the mounting hole 201, which can be the above shapes or a combination of the above shapes.

[0068] In minimally invasive surgery, the operating space is small, which is not conducive to the observation and operation of the surgeon, so the surgical instrument must avoid any small deformation and position deviation as much as possible. Since the width of the mounting hole 201 is large, when the patch hook 110 is hooked on the mounting hole 201, the mounting hole 201 may be deformed due to the pulling force, which will affect the flatness of the patch 200 and may cause local distortion of the patch 200, ultimately affecting the coverage of the cut tissue. Therefore, the connecting portion 210 is provided to stabilize the deformation or position deviation of the mounting hole 201 that may occur during the mounting process and the cutting of the patch.

[0069] Since the mounting hole 201 needs to be able to generate a free end of the mounting hole 201 after being cut by the cutting knife of the stapler. When the stapler opens the jaw, the free end can pass around the patch hook 110 in a twisted manner, thereby avoiding being pulled by the patch hook 110 to generate tearing to the anastomosis. Therefore, the connecting part 210 is arranged in a manner that has an inclined angle with the length direction of the patch 200. Therefore, the connecting part 210 can smoothly separate from the staple board 100 and the patch hook 110 after being cut while effectively preventing the deformation of the patch 200. Or, the connecting part 210 is arranged in a manner that has an inclined angle with the length direction of the patch mounting hole 201. Or, the connecting part 210 is arranged in a manner that has an inclined angle with the width direction of the patch mounting hole 201.

[0070] In some embodiments, the staple board assembly 1000 further comprises a first end cap 300 which is detachably connected with the staple board 100 and is configured to clamp the first patch 200. As shown in Figure 5 、 Figure 6 The first end cap 300 comprises a first base body 310 and a clamping piece 311 which is arranged on the first base body 310 and extends towards the staple board 100 for inserting into the clamping groove 101 to fix the first patch 200. Further, when the first patch 200 is laid on the first surface, the free end 221 of the patch extends towards the free end direction of the staple board 100 and covers the clamping groove 101, and in response to the fastening installation of the first end cap 300 with the staple board 100, the clamping piece 311 is inserted into the clamping groove 101 to clamp the free end 221 of the patch, and further, the first patch 200 is fixed with the staple board 100.

[0071] The first end cap 300 has a first position which is released from the staple board 100, and a second position which is connected with the staple board 100. When the first end cap 300 is in the first position, there is a gap between the clamping piece 311 and the clamping groove 101, and the first end cap 300 is released from the staple board 100; when the first end cap 300 is in the second position, the first limiting piece 330 is inserted into the buckling part 350, and the first end cap 300 is clamped with the staple board 100.

[0072] In some embodiments, the first end cap 300 comprises a bending part 312 which is connected with the first base body 310 and has a different extension direction from the first base body 310, and is configured to more accurately limit the clamping position of the first patch 200 to the anastomosis. Specifically, as shown in Figure 6As shown, the extension direction of the bending portion 312 is shown as l, which has an angle a with the first direction, a = 40°-80°. If the angle a is too large, the staple plate assembly 1000 and other components of the stapler will be clamped to the required opening, which will cause unnecessary scraping between the tissue; if the angle a is too small, the staple plate assembly 1000 cannot accurately limit the contact position of the first patch 200 and the anastomotic stoma or cannot clamp the tissue around the anastomotic stoma. Therefore, the setting of the bending portion 312 makes the connection of the staple plate assembly 1000 and other components of the stapler more closely, improves the clamping stability of the stapler, and avoids the displacement of the tissue around the anastomotic stoma on the staple plate 100 during the firing of the anastomotic staple.

[0073] In some embodiments, the bending portion 312 also has a first inclined surface 313, and the first base body 310 and the first surface are in the same plane, as shown in Figure 5 As shown, the inclined surface and the plane of the first surface have an angle b, b = 130°-160°. Since the bending portion 312 has a certain thickness, by limiting the angle between the first inclined surface 313 and the first surface, the thickness of the bending portion 312 is further limited, so that the thickness of the bending portion 312 is moderate, and the clamping of the human tissue is not inconvenient due to the thick thickness of the bending portion 312.

[0074] In some embodiments, in the second direction, the end of the bending portion 312 connected with the first base body 310 has the same width as the first base body 310, and in the first direction, the width of the bending portion 312 gradually decreases as the bending portion 312 gradually moves away from the clamping piece 311. The end of the bending portion 312 away from the clamping piece 311 is a rounded structure, which is configured to avoid the end of the bending portion 312 piercing the human tissue and causing unnecessary medical risks.

[0075] Specifically, as shown in Figure 6As shown, the bending portion 312 is configured as a tapered structure, and the width of the bending portion 312 away from one end of the clamping member 311 gradually narrows in the second direction, i.e., the width of the bending portion 312 away from one end of the clamping member 311 is smaller than the width of the first base body 310. When the staple cartridge assembly 1000 is inserted into the human body, the end cap portion is preferentially in contact with the tissue, for example, in the process of gastrointestinal anastomosis surgery, there may be a situation that the anastomosis position is deep, and the end of the stapler needs to pass through the closely arranged gastrointestinal tissue to reach the anastomosis position. In this case, the stapler with a tapered end is beneficial to the insertion of the stapler to the anastomosis. On the other hand, the end of the bending portion 312 is configured as a taper, which is beneficial to the cooperation of the butt plate assembly 1000 and the cartridge assembly 2000 of the stapler, so that the end of the butt plate assembly 1000 cooperates with the cartridge assembly 2000 to realize the stable connection of the butt plate assembly 1000 and the butt plate assembly 1000.

[0076] In some embodiments, the distance from one end of the bending portion 312 away from the clamping member 311 to the plane where the second surface is located is limited, such as Figure 5 As shown, the distance from one end of the bending portion 312 away from the clamping member 311 to the plane where the first surface is located is 20-30 mm. Within this range, the end of the bending portion 312 will not be excessively raised, and thus, in the second direction, the position of the end of the bending portion 312 is approximately the center of gravity of the stapler, so that the end of the bending portion 312 has a stable guiding effect during the movement of the stapler in the first direction.

[0077] In some embodiments, the first end cap 300 further comprises a first limiting member 330, which is arranged on the first base body 310 and extends in the same direction as the clamping member 311, for connecting the first end cap 300 with the butt plate 100 and limiting the movement range of the first end cap 300 inside the butt plate 100. The first limiting member 330 comprises a first limiting member end 331 and a stopping portion 332. The first limiting member end 331 extends towards the direction of connecting with the butt plate 100, and the stopping portion 332 is connected with the first limiting member end 331 and extends away from the butt plate 100. The first limiting member 330 is used to be clamped with the butt plate 100 to connect the first end cap 300 with the butt plate 100.

[0078] In some embodiments, as shown in Figure 7As shown, the first end cap 300 is configured as a double-layer structure, and a gap is formed between the clamping member 311 and the first limiting member 330. The gap is used to accommodate at least part of the nail plate 100, so that the first end cap 300 and the nail plate 100 are accurately installed and stably connected. In some embodiments, the nail plate 100 further comprises a clamping portion 120, as shown in Figure 4 As shown, at least part of the clamping portion 120 is hollow to form an accommodation space, which is configured to accommodate at least part of the first end cap 300. A clamping member is arranged inside the accommodation space and fixedly connected to the inner side wall of the accommodation space, configured to limit the movement distance of the first end cap 300 in the first direction of the nail plate 100. The accommodation space comprises a connecting structure 121, which can be an opening or a through hole on the side wall of the accommodation space, used to install the first end cap 300, at least part of the first end cap 300 passes through the connecting structure 121 and is in sliding connection with the connecting structure 121. The first end cap 300 can slide in the length direction of the nail plate 100 to clamp or release the first patch 200.

[0079] In some embodiments, as shown in Figure 7 As shown, the lower surface of the first base body 310 is provided with a second limiting member 340, which penetrates the connecting structure 121 and is clamped with the side wall of the connecting structure 121 to limit the movement of the first end cap 300 in response to the assembly of the first end cap 300 and the nail plate 100. At this time, the first end cap 300 can move along the first direction to clamp or release the first patch 200. The cross-sectional view of the assembly of the first end cap 300 and the nail plate 100 is shown in Figure 7 As shown, the state diagram shows that the first end cap 300 is in the second position, and if it is necessary to release the first patch 200, the first end cap 300 needs to be switched from the second position to the first position. In response to the switching of the first end cap 300 to the second position, the abutting portion 332 of the first limiting member 330 abuts against the clamping member, at this time, the clamping member 311 is separated from the clamping groove 101, and the first patch 200 is released.

[0080] In some embodiments, the first end cap 300 further comprises an edge portion 320 disposed on the first base 310 for assisting the first end cap 300 to be accurately positioned and moved along the length direction of the staple plate 100. The portion of the edge portion 320 in contact with the staple plate 100 is provided with a first limiting groove 321 for assisting the first end cap 300 to be clamped with the staple plate 100 to hold the patch 200, wherein the portion of the staple plate 100 connected with the first end cap 300 is provided with a first limiting portion 122 clamped with the first limiting groove 321.

[0081] Specifically, when the first end cap 300 is mounted to the staple plate 100, the edge portion 320 wraps at least part of the clamping portion 120, and the first limiting groove 321 is clamped with the first limiting portion 122 of the clamping portion 120 to accurately position the first end cap 300 and the staple plate 100. In response to the first end cap 300 being in the first position, the first end cap 300 is separated from the staple plate 100, there is a gap between the clamping piece 311 and the clamping groove 101, and the first limiting groove 321 is separated from the first limiting portion 122, at which time the patch 200 and the staple plate 100 are detachable. In response to the first end cap 300 being in the second position, the first end cap 300 is connected with the staple plate 100, the clamping piece 311 is clamped with the clamping groove 101, the first limiting groove 321 is clamped with the first limiting portion 122, and the free end of the patch 200 is fixed with the staple plate 100.

[0082] A second aspect of the present disclosure provides an anastomat, such as Figure 8 As shown, the anastomat comprises the above-mentioned staple plate assembly 1000 and a staple cartridge assembly 2000, and the staple cartridge assembly 2000 comprises a staple cartridge base 2100, a second patch 2200, and a second end cap 2300. The staple cartridge base 2100 can be a long strip structure, extending along the same direction as the staple plate assembly 1000, and is configured to support the second patch 2200. One end of the staple cartridge base 2100 is provided with a second inclined surface 2110, which is configured to first approach the anastomotic stoma when the staple cartridge assembly 2000 is sent into the human body under the action of an external force. The second inclined surface 2110 has the same slope as the first inclined surface 313 and is configured to cooperate with the first inclined surface 313 of the staple plate assembly 1000 under the action of an external force to clamp the human tissue and assist the first patch 200 and the second patch 2200 to clamp the anastomotic stoma together. The inside of the staple cartridge base 2100 is hollow and used to accommodate the second end cap 2300, an anastomat staple assembly, and other structural components.

[0083] In some embodiments, the second end cap 2300 is arranged on the cartridge base 2100 and extends at least partially in the first direction towards the interior of the cartridge base 2100, configured to be clamped with the cartridge base 2100 to fix the end of the second patch 2200, so that the second patch 2200 is fixed relative to the cartridge base 2100, facilitating the anastomosis needle to penetrate the second patch 2200 to suture the anastomosis.

[0084] In some embodiments, as shown in Figure 9 , Figure 10 The second end cap 2300 includes a cap 2310 arranged at one end of the second end cap 2300, and the surface of the cap 2310 has the same slope as the second inclined surface 2110 of the cartridge base 2100. In response to the installation of the second end cap 2300 on the cartridge base 2100, the surface of the cap 2310 is in a different plane from the second inclined surface 2110 of the cartridge base 2100, and the surface of the cap 2310 forms a concave structure relative to the end surface of the cartridge base 2100, which ensures that the second end cap 2300 and the anvil plate 100 can effectively clamp the second patch 2200 and avoid unnecessary scratches.

[0085] In some embodiments, as shown in Figure 8 , Figure 9 The anastomosis device includes an anastomosis device body 3000 connecting the anvil plate assembly 1000 and the cartridge assembly 2000, configured to control the clamping or separation of the cartridge assembly 2000. The cartridge assembly 2000 and the anvil plate assembly 1000 are clamped and fixed together on the cut tissue surface (anastomosis), and at this time the anastomosis needle assembly in the cartridge assembly 2000 can be fired. The fired anastomosis needle penetrates the tissue and the second patch 2200, deforms at the anvil groove 102 of the anvil plate assembly 1000, and completes the closure of the anastomosis.

[0086] In response to the clamping of the anastomosis by the anvil plate assembly 1000 and the cartridge assembly 2000, the first end cap 300 and the second end cap 2300 jointly clamp the anastomosis, configured to make the anastomosis clamped tightly, avoiding the anastomosis from being detached from the anastomosis device.

[0087] In some embodiments, the anastomat further comprises a cutting knife assembly, under the action of an external force, the pushing part of the anastomat pushes the pusher to move. When the nail-pressing plate assembly 1000 clamps the anastoma with the nail cartridge assembly 2000, the pushing part of the anastomat can push the pusher to move, and the cutting knife assembly synchronously cuts the first patch 200, the second patch 2200 and the tissue clamped thereby. In response to the cutting knife assembly pushing the pusher assembly to move in a first direction to press against the first end cap and the second end cap 2300, the first end cap 300 is separated from the nail-pressing plate 100; the second end cap 2300 is separated from the nail cartridge base 2100, at this time, the first patch 200 can be released between the nail-pressing plate 100 and the first end cap 300; the second patch 2200 can be released between the nail cartridge base 2100 and the second end cap 2300. The anastomat provided by the present disclosure can achieve the purpose of quickly installing or releasing the patch.

[0088] Further, compared with the related art, the nail-pressing plate assembly 1000 provided by the present disclosure has a first end cap 300, and the first end cap 300 and the nail-pressing plate 100 are connected to realize the pressing or releasing of the first patch 200, so as to achieve the purpose of effectively installing or dismounting the first patch 200. During use of the anastomat, the bending part 312 of the first end cap 300 can make the nail-pressing plate assembly 1000 adhere to the nail cartridge assembly 2000 of the anastomat, which is beneficial to clamp the patch, and has the advantages of simple structure, convenient operation and improved safety and reliability of the instrument.

[0089] It should be noted that the first patch 200 and the second patch 2200 described in the present disclosure can be made of high molecular materials or animal source materials. The high molecular material can be polylactic acid, polyglycolic acid, polyglycolic acid, a copolymer of polyglycolic acid and lactic acid, a copolymer of lactic acid and caprolactone, a copolymer of polyglycolic acid and caprolactone, polycaprolactone, polydioxanone or a mixture thereof. The animal source material can be a tissue envelope and / or an inner membrane. The pericardial membrane, peritoneal membrane or submucosa can be selected. Preferably, the small intestinal submucosa, bladder submucosa, amniotic membrane or a combination thereof can be selected. Preferably, the above-mentioned high molecular material and animal source material are completely degradable materials or at least partially degradable after being implanted in the body.

[0090] The specific structure, working principle and beneficial effects of the nail-pressing plate assembly and the anastomat provided by the embodiments of the present disclosure can refer to the nail-pressing plate assembly and the anastomat described in any of the above embodiments, which will not be repeated here.

[0091] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the systems or apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and relevant parts can be referred to the method section.

[0092] The above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit it. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A nail guard assembly, comprising: The application relates to a staple plate assembly. The staple plate comprises a staple plate body extending in a first direction, the staple plate body having a first surface and a second surface facing away from each other in a thickness direction of the staple plate body, and an end of the staple plate body being provided with a clamping groove; a first patch detachably covering the first surface; a first end cap detachably connected with the staple plate body and configured to be clamped with the clamping groove to hold the first patch, wherein the first end cap comprises a bending portion, and an angle between an extension direction of the bending portion and a plane where the first surface is located is 40-80 degrees.

2. The stopper plate assembly of claim 1, wherein The first end cap comprises: a first base body; a clamping member arranged on the first base body and extending towards the staple plate body, and configured to be inserted into the clamping groove to fix the first patch.

3. The staple plate assembly according to claim 2, wherein in a second direction, a width of an end of the bending portion away from the clamping member is smaller than a width of the first base body, and the first direction is perpendicular to the second direction.

4. The staple plate assembly according to claim 2, wherein a distance from the end of the bending portion away from the clamping member to the plane where the first surface is located is 20-30 mm.

5. The staple plate assembly according to claim 1, wherein the bending portion has a first inclined surface, and an angle between the first inclined surface and the first surface is 130-160 degrees.

6. The staple plate assembly according to claim 2, wherein the end of the bending portion away from the clamping member is a rounded corner structure.

7. The nail plate assembly of claim 2, wherein The first end cap further comprises: a first limiting member arranged on the first base body and extending in the same direction as the clamping member, and configured to limit a moving range of the first end cap.

8. The staple plate assembly according to claim 7, wherein the first end cap is a double-layer structure, and a gap is formed between the clamping member and the first limiting member.

9. The nail plate assembly of claim 7, wherein, The staple plate further comprises: a buckling portion arranged on the second surface of the staple plate body and configured to be clamped with the first limiting member, wherein the first end cap has a first position where the first end cap is released from the staple plate body, and a second position where the first end cap is connected with the staple plate body, when the first end cap is in the first position, a gap is formed between the clamping member and the clamping groove, and the first end cap is released from the staple plate body; when the first end cap is in the second position, the first limiting member is clamped with the buckling portion, and the first end cap is clamped with the staple plate body.

10. An anastomat characterized by comprising: The application relates to a staple plate assembly. The staple plate assembly comprises: a staple plate assembly according to any one of claims 1-9; a cartridge base extending in the same direction as the staple plate assembly and configured to accommodate a stapling assembly; a second patch detachably connected with the cartridge base and configured to cover the stapling assembly; a second end cap movably connected with the cartridge base and configured to hold the second patch.

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