Staple cartridge assembly for tubular stapler and tubular stapler

Abstract

The present disclosure provides a stapler assembly for a tubular stapler and a tubular stapler, wherein the stapler assembly comprises: a housing, a stapler, a patch fixing member and a first patch. The stapler is arranged inside the housing and is used to store staples; the patch fixing member is arranged inside the stapler; the first patch is constructed as an annular structure, comprising a first patch body and a first patch connecting portion, the first patch body covers the end face of the stapler, and the first patch connecting portion is connected to the patch fixing member. The first patch is connected to the stapler through the patch fixing member, which can effectively prevent the first patch from falling off the tubular stapler, and at the same time can avoid the contamination that may be caused by private patch replacement, so as to ensure the use safety and hygienic safety of medical devices.

Description

Technical Field

[0001] The present disclosure relates to the technical field of medical devices, and in particular to a stapler cartridge assembly for a tubular stapler and a tubular stapler. Background Art

[0002] The application of staplers has greatly promoted the development of modern surgery and minimally invasive surgery, and has a milestone significance. Staplers include linear staplers and tubular staplers, which can staple tissues through staplers while cutting, and are widely used for cutting, suturing or anastomosis of organ tissues such as intestines, stomachs, lungs, and pancreas. The cutting and anastomosis part of the tubular stapler includes two parts, one is a staple anvil assembly with an umbrella-like or mushroom-like shape, and the other is a stapler part of the stapler. The stapler assembly includes a stapler and is also provided with an annular knife for cutting tissue. The tubular stapler can form an annular staple line on the tissue, and use the annular knife to cut the tissue to form a circular anastomosis. This instrument can be used to conveniently perform end-to-end, end-to-side, and side-to-side anastomosis of tubular organs, and is usually used for esophageal, intestinal or gastrointestinal surgery. Compared with conventional surgery that first uses a scalpel / scissors to open, it greatly reduces the risk of such surgical procedures and shortens the operation time, so it has a very wide range of applications in surgical operations. However, the rigidity of staples alone cannot completely prevent leakage and bleeding of the anastomotic tissue. This is because the staples are rigid structures that cannot fully match the flexibility of soft tissues, resulting in leakage and bleeding in the staple holes. To solve the above problems, the anastomotic reinforcement patch can be used in conjunction with the stapler, so that while the stapler cuts and seals the wound surface, the reinforcement patch is fixed to the wound surface to seal the staple holes, improve the wound surface strength, and thus prevent leakage and bleeding in the wound surface. Summary of the invention

[0003] The purpose of the present disclosure is to provide a stapler assembly for a tubular stapler and a tubular stapler in order to solve the technical problems in the related art. The specific solution is as follows:

[0004] A first aspect of an embodiment of the present disclosure provides a stapler assembly for a tubular stapler, comprising: a shell, a stapler disposed inside the shell and used to store staples; a patch fixing member disposed inside the stapler; and a first patch, wherein the first patch is constructed as an annular structure, comprising a first patch body portion and a first patch connecting portion, wherein the first patch body portion covers the end surface of the stapler, and the first patch connecting portion is connected to the patch fixing member.

[0005] In some embodiments, a plurality of the first patch connecting portions are provided, and the plurality of the first patch connecting portions are discretely arranged on the inner ring edge of the first patch main body portion and extend in a direction substantially perpendicular to the first patch main body portion.

[0006] In some embodiments, the first patch connecting portion is provided with a first through hole for connecting with the patch fixing member.

[0007] In some embodiments, the patch fixing member includes: a fixing member body; a first clamping portion, wherein the first clamping portion is provided in plurality and extends along the fixing member body in a direction away from the first patch and is used to connect the nail magazine.

[0008] In some embodiments, the patch fixing member further includes: a second clamping portion, which is provided in plurality and extends along the fixing member body in a direction close to the first patch, and is used to connect the first patch.

[0009] In some embodiments, the second clamping portion is provided with a protrusion, and the protrusion passes through the first through hole to connect the first patch connecting portion with the second clamping portion.

[0010] In some embodiments, the nail magazine assembly also includes: a positioning axis core, which is arranged inside the shell, and a snap-in groove is provided on the outer side wall of the positioning axis core for connecting with the first snap-in portion of the patch fixing member.

[0011] In some embodiments, the nail magazine assembly also includes: an annular knife, wherein the annular knife sleeve is arranged on the outside of the positioning axis core and moves in the length direction of the positioning axis core.

[0012] In some embodiments, the annular knife has a storage position and a release position relative to the nail magazine. When the annular knife is in the storage position, the annular knife is stored inside the nail magazine; when the annular knife is in the release position, the end of the annular knife extends out of the end of the nail magazine to cut off the first patch. The annular knife cuts off the first patch after switching from the storage position to the release position.

[0013] A second aspect of the embodiments of the present disclosure provides a tubular stapler, comprising the staple cartridge assembly for the tubular stapler described in the first aspect of the embodiments of the present disclosure.

[0014] Compared with the related art, the above solution of the embodiment of the present disclosure has at least the following beneficial effects:

[0015] The stapler magazine assembly provided by the present invention is used in a tubular stapler. The first patch covers the stapler magazine and is connected to the patch fixing member, which can effectively prevent the patch from falling off the stapler in actual application. At the same time, it can avoid the pollution that may be caused by private replacement of the patch, so as to ensure the safe use and hygienic safety of the medical device.

[0016] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0018] Figure 1 It is a schematic structural diagram of a nail magazine assembly when a ring-shaped knife is in a storage position according to an exemplary embodiment.

[0019] Figure 2 It is a schematic structural diagram of a nail magazine assembly when a ring-shaped knife is in a released position according to an exemplary embodiment.

[0020] Figure 3 The figure is a schematic structural diagram showing a patch fixing member connected to a first patch according to an exemplary embodiment.

[0021] Figure 4 is a cross-sectional view showing a patch fixing element connected to a first patch according to an exemplary embodiment.

[0022] Figure 5 It is a schematic structural diagram of an anvil assembly and a central axis assembly of a tubular stapler in an unfired state according to an exemplary embodiment.

[0023] Figure 6 yes Figure 5 A partial enlarged view of part A.

[0024] Figure 7 yes Figure 5 A partial enlarged view of part B.

[0025] Figure 8 The figure is an exploded view of an anvil assembly and a central shaft assembly according to an exemplary embodiment.

[0026] Fig. 9 The diagram is a partial exploded view of a nail anvil assembly according to an exemplary embodiment.

[0027] Patch Fig.10 It is a schematic structural diagram of an anvil assembly and a central axis assembly of a tubular stapler in a firing state according to an exemplary embodiment.

[0028] Fig.11 yes Fig.10 A partial enlarged view of part C.

[0029] Fig.12 yes Fig.10A partial enlarged view of part D.

[0030] Fig.13 It is a schematic structural diagram of a tubular stapler according to an exemplary embodiment.

[0031] Fig.14 The present invention is a structural schematic diagram of a nail anvil assembly according to a prior art.

[0032] Reference numerals:

[0033] The staple cartridge assembly 100, the patch fixing member 110, the fixing member body 111, the first clamping portion 112, the second clamping portion 113, the protrusion 114, the staple cartridge 120, the clamping groove 121, the positioning shaft core 130, and the annular knife 140;

[0034] The first through hole 201, the first patch 210, the first patch body 211, the first patch connecting portion 212, the edge portion 213, the second patch 220, the second patch body 221, and the second patch connecting portion 222;

[0035] The anvil assembly 300, the anvil cap 310, the first limiting member 311, the second limiting member 312, the limiting groove 313, the first elastic member 314, the washer ring 315, the protruding key 316, the anvil 320, and the nail stop groove 321;

[0036] Central shaft assembly 400, central shaft body 410, fastener 411, buckle assembly 420, buckle base 421, second elastic member 422, and clamping member 423;

[0037] A firing handle 500, a safety bolt 510, and a tubular stapler 1000;

[0038] Anvil assembly 300'; anvil 320'. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0040] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments, and are not intended to limit the present disclosure. The singular forms "a", "said" and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two, and other quantifiers are similar.

[0041] It should be understood that although the terms first, second, third, etc. may be used to describe ... in the embodiments of the present disclosure, these ... should not be limited to these terms. These terms are only used to distinguish .... For example, without departing from the scope of the embodiments of the present disclosure, the first ... may also be referred to as the second ..., and similarly, the second ... may also be referred to as the first .... In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include the plural forms, unless the context clearly indicates other meanings.

[0043] It should be further understood that the terms "center", "longitudinal", "lateral", "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0046] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0047] In the related art, the patch is detachably arranged on the anvil and the stapler. The present disclosure further improves and provides a stapler assembly, adds a physical fixing structure, further improves the connection strength between the patch and the stapler, and improves the safety of use.

[0048] In view of this, optional embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0049] The first aspect of the disclosed embodiment provides a stapler assembly 100 for a tubular stapler 1000. The stapler assembly 100 includes: a housing, a stapler 120, a first patch, and a patch fixing member 110. The stapler 120 is disposed inside the housing and is used to store staples. The stapler 120 is configured as an annular structure, and the staples are stored inside the annular structure. A plurality of slots are disposed on the annular end surface of the stapler 120, and the staples can extend out of the stapler 120 through the slots.

[0050] like Figure 1 As shown, a patch fixing member 110 is disposed at the center of the annular structure of the nail magazine 120, and is used to connect a portion of the first patch 210 to the nail magazine 120. Specifically, the first patch 210 is constructed as an annular structure, including a first patch body portion 211 and a first patch connecting portion 212, the first patch body portion 211 covers the end surface of the nail magazine 120, and the first patch connecting portion 212 extends toward the inside of the nail magazine 120 and away from the first patch body portion 211, and is connected to the patch fixing member 110, thereby connecting the first patch 210 to the patch fixing member 110.

[0051] There are multiple first patch connecting parts 212 , and the multiple first patch connecting parts 212 are discretely arranged on the inner ring edge of the first patch main body 211 and extend in a direction substantially perpendicular to the first patch main body 211 .

[0052] In some embodiments, Figure 3As shown, the first patch 210 further includes an edge portion 213. The edge portion 213 is disposed at the outer edge of the first patch body 211 and extends in the same direction as the first patch connection portion 212, and is used to wrap the outer edge of the staple cartridge 120 to prevent the edge of the staple cartridge 120 from directly contacting human tissue in actual applications.

[0053] In some embodiments, the patch fixing member 110 includes: a fixing member body 111, a first clamping portion 112 and a second clamping portion 113.

[0054] The first clamping portion 112 is provided with a plurality of Figure 3 As shown, a plurality of first clamping portions 112 extend along the fixing body 111 away from the first patch 210 for connecting the staple cartridge 120. A clamping slot 121 is provided inside the staple cartridge 120, and the clamping slot 121 is connected to the first clamping portion 112 of the patch fixing member 110.

[0055] A plurality of the second clamping portions 113 are provided, and the plurality of second clamping portions 113 extend along the fixing body 111 toward the direction approaching the first patch 210 , and are used for connecting the first patch 210 .

[0056] Specifically, the second clamping portion 113 is provided with a protrusion 114, and the first patch connecting portion 212 of the first patch 210 is provided with a first through hole 201. Figure 4 As shown, after the first through hole 201 passes through the protrusion 114 , the first patch connecting portion 212 is connected to the second clamping portion 113 , that is, the first patch 210 is connected to the patch fixing member 110 .

[0057] In some embodiments, the staple cartridge assembly 100 further includes a positioning shaft core 130, which is disposed inside the housing and is used to fix the position of the patch fixing member 110 and the first patch 210. This prevents the first patch 210 or the patch fixing member 110 from being displaced due to the movement of the tubular stapler 1000. A clamping groove 121 is disposed on the outer side wall of the positioning shaft core 130, and the clamping groove 121 is used to connect with the first clamping portion 112 of the patch fixing member 110.

[0058] In some embodiments, in order to ensure that the tubular stapler 1000 can be used normally, in actual applications, the tubular stapler 1000 further includes an anvil assembly 300 .

[0059] In some embodiments, the anvil assembly 300 may be connected to the staple cartridge assembly 100. Specifically, the anvil assembly 300 and the staple cartridge assembly 100 have a first state and a second state. When the anvil assembly 300 and the staple cartridge assembly 100 are in the first state, the anvil 320 is separated from the staple cartridge 120. When the anvil assembly 300 and the staple cartridge assembly 100 are in the second state, the anvil 320 is attached to the staple cartridge 120.

[0060] Furthermore, the anvil assembly includes: an anvil cap 310 , an anvil 320 and a second patch 220 .

[0061] like Figure 5 , Figure 6 , Figure 7 As shown, the anvil cap 310 is engaged with the anvil 320 , so that a portion of the second patch 220 is fixed to the anvil 320 .

[0062] In some embodiments, Fig. 9 As shown, the second patch 220 is an annular structure, including: a second patch body 221 and a second patch connecting portion 222, the second patch body 221 covers the end surface of the anvil 320, the second patch connecting portion 222 is a serrated structure, and at least a portion of the second patch connecting portion 222 is clamped between the anvil cap 310 and the anvil 320.

[0063] Specifically, because the side wall of the anvil 320 is tapered, the straight-tube outer patch used in the related art cannot completely wrap the anvil 320. Therefore, in the present disclosure, the second patch connecting portion 222 is constructed as a serrated structure, which has a soft outer periphery and has the advantages of high tension, good relaxation, and strong expandability, and can wrap the anvil 320 to avoid the second patch 220 from being displaced on the anvil 320 due to poor matching between the second patch 220 and the anvil 320 or a large press-fit gap, thereby affecting the suturing effect.

[0064] When the anvil assembly 300 and the nail magazine assembly 100 are in the first state, the anvil 320 is separated from the nail magazine 120, the first patch 210 and the second patch 220 are separated, and the first patch 210 and the second patch 220 are respectively assembled to the nail magazine 120 and the anvil 320.

[0065] When the anvil assembly 300 and the staple cartridge assembly 100 are in the second state, the staple cartridge 120 is in contact with the anvil 320, the first patch 210 is in contact with the second patch 220, and the staples in the staple cartridge 120 connect the first patch 210 and the second patch 220.

[0066] In some embodiments, the anvil assembly 300 further includes: a central axis assembly 400 , which passes through the anvil 320 and is engaged with the anvil cap 310 , so that the anvil cap 310 has a pressing tendency toward the anvil 320 to clamp the second patch 220 .

[0067] Furthermore, if Figure 6 As shown, a first limiting member 311 , a second limiting member 312 and a limiting groove 313 are disposed inside the anvil cap 310 , wherein the first limiting member 311 is disposed inside the limiting groove 313 .

[0068] The anvil cap 310 is further provided with a first elastic member 314, which is disposed inside the limiting groove 313 and sleeved outside the first limiting member 311. The first elastic member 314 sleeves the end of the central shaft assembly 400 and abuts against the inside of the anvil cap 310.

[0069] In some embodiments, Figure 8 As shown, the central shaft assembly 400 includes: a central shaft body 410 and a buckle assembly 420 , wherein the buckle assembly 420 is disposed between the anvil cap 310 and the anvil 320 to enable the anvil cap 310 to be buckled with the anvil 320 .

[0070] Specifically, the buckle assembly 420 includes a buckle base 421 , and the buckle base has a first surface facing the anvil cap 310 and a second surface facing away from the anvil cap 310 .

[0071] A first mounting portion is provided on the first surface of the buckle base 321, and the first elastic member 314 is sleeved on the outside of the first mounting portion. A second through hole is provided at the end of the first mounting portion, and the first stopper extends through the second through hole to the inside of the first mounting portion, and the first protrusion of the first stopper is engaged with the inner wall of the first mounting portion.

[0072] A second mounting portion is disposed on the second surface of the buckle base 421 , and the second mounting portion is connected to one end of the central axis body 410 , and is used to connect the anvil assembly 300 to an external force-applying component.

[0073] Fasteners 411 are also provided on both sides of the central shaft body 410. The fasteners 411 are clamped with the central shaft body 410 to enable the anvil 320 to move smoothly along the central shaft body 410 to a clamping position with the anvil cap 310, so as to prevent the anvil 320 from falling out of the anvil cap 310 after the anvil cap 310 is clamped with the anvil 320.

[0074] The buckle assembly 420 further includes a second elastic member 422 and a clamping member 423 .

[0075] A first protrusion key matching the mounting groove is provided on a side of the snap-in component 423 facing the snap-in base 421, and is used to connect with the snap-in base 321; a first recessed portion and a first inclined surface are provided on a side of the snap-in component 423 away from the snap-in base 421, wherein when the first inclined surface is acted upon by external force, it can move in the extension direction of the second elastic component 422 to squeeze the second elastic component 422.

[0076] The first recessed portion of the clamping member 423 is used to clamp with the second protruding portion of the second limiting member 312 , so that the anvil cap 310 is clamped with the anvil 320 .

[0077] Furthermore, the anvil cap 310 is provided with a second protruding key 316, and the anvil cap 310 has a pressing tendency toward the anvil 320, so that the second protruding key 316 clamps the second patch 220. The second patch 220 moves synchronously with the anvil assembly 300.

[0078] In some embodiments, the inner wall of the positioning axis core 130 is provided with a third connection portion suitable for connecting to the central axis body 410, and when the anvil assembly 300 and the nail magazine assembly 100 are switched from the first state to the second state, the central axis body 410 is connected to the third connection portion.

[0079] Specifically, when the anvil assembly 300 and the nail magazine assembly 100 are in the second state, the end of the central axis body 410 away from the anvil cap 310 extends toward the interior of the nail magazine 120 and is connected to the third connecting portion in the positioning axis core 130, thereby making the first patch 210 on the nail magazine 120 fit with the second patch 220 on the anvil 320.

[0080] In some embodiments, the staple cartridge assembly 100 further includes an annular knife 140. The annular knife 140 is sleeved outside the positioning shaft core 130 and can move in the length direction of the positioning shaft core 130. The annular knife 140 has a storage position and a release position relative to the staple cartridge assembly 100.

[0081] When the anvil assembly 300 and the nail magazine assembly 100 are in the first state, the annular knife 140 is stored in the nail magazine 120. Figure 1 As shown, the annular knife 140 is in the storage position at this time; when the anvil assembly 300 and the staple cartridge assembly 100 are in the second state, the tubular stapler 1000 can be fired to switch the annular knife 140 from the storage position to the release position, as shown in FIG. Figure 2 As shown, the end of the annular knife 140 in the release position extends out of the staple cartridge assembly 100 for cutting off the first patch 210 and the second patch 220 .

[0082] In some embodiments, a nail anvil groove 321 is provided on the end surface of the nail anvil 320, and the nail anvil groove 321 is used to squeeze and deform the suture nail. Further, the first patch 210 and the second patch 220 are sutured. The first patch 210 and the second patch 220 sutured by the suture nails are connected to the human tissue, and the cut part of the first patch 210 and the second patch 220 and the human tissue are cut off by the annular knife 140 together.

[0083] Furthermore, the nail anvil assembly 300 also includes a washer ring 315, such as Figure 7 As shown, the washer ring 315 is disposed on the side of the second patch 220 facing the anvil 320, and the washer ring 315 is used to assist the external force in cutting the first patch 210 and the second patch 220, so that the first patch 210 and the second patch 220 are neatly cut on the washer ring 315. The washer ring 315 is constructed as an annular structure, and the outer aperture of the washer ring 315 is larger than the inner aperture of the second patch 220, so as to prevent the washer ring 315 from escaping from the inner aperture of the first patch 210.

[0084] In some embodiments, when the tubular stapler 1000 is restored from the firing state to the initial state, the annular knife 140 switches from the release position to the storage position. At this time, the first patch 210 and the second patch 220 are cut off by the annular knife 140, and the cut parts are a central circular structure and a peripheral annular structure.

[0085] In some embodiments, the anvil cap 310 and the anvil 320 have a clamping state for clamping the second patch 220 , and a releasing state for releasing the second patch 220 .

[0086] like Figure 5 , Figure 6 , Figure 7 As shown, the clamping member 423 can move in the expansion and contraction direction of the second elastic member 422 to squeeze the second elastic member 422. The clamping member is clamped with the second limiting member 312 to clamp the anvil cap 310 with the anvil 320. Further, a protruding key 316 is provided on the anvil cap 310, and the anvil cap 310 has a pressing tendency toward the anvil 320, so that the protruding key 316 clamps the second patch 220. In the first state, the anvil cap 310 and the anvil 320 have the function of clamping the second patch 220, and the second patch 220 moves synchronously with the anvil assembly 300.

[0087] In some embodiments, Fig.10 , Fig.11 , Fig.12 As shown, after the annular knife 140 cuts off the first patch 210 and the second patch 220, the annular knife 140 continues to move toward the anvil cap 310, and the annular knife 140 cuts off the washer ring 315 and contacts and presses the surface of the clamping member 423, so that the clamping member 423 squeezes the second elastic member 422. The second elastic member 422 is compressed, and the clamping member 423 moves in the opposite direction toward the inside of the central shaft assembly 400 until the clamping member 423 is disengaged from the clamping member 312. Further, the anvil cap 310 is separated from the anvil 320 and the second patch 220 is released. At this time, the second patch 220 is removed from between the anvil cap 310 and the anvil 320.

[0088] A second aspect of the present disclosure provides a tubular stapler 1000 , which includes the staple cartridge assembly 100 of the first aspect of the present disclosure.

[0089] In some embodiments, the tubular stapler 1000 further includes a firing handle 500 and a safety bolt 510. Fig.13 As shown, when the anvil assembly 300 and the stapler assembly 100 are in the second state, the tubular stapler 1000 can be fired. Before firing the tubular stapler 1000, the safety pin 510 needs to be peeled off the firing handle 500. Furthermore, the firing handle 500 is pressed with all the force to move the stapler 120 as a whole toward the front end of the tubular stapler 1000, and at the same time, the staples and the annular knife 140 are pushed out. The staples are sent out from the stapler 120, and deformed by contact with the staple groove 321 at the end of the anvil 320, so that the first patch 210 and the second patch 220 are partially connected and fixed; the annular knife 140 is sent out from the stapler 120 to cut off the first patch 210 and the second patch 220.

[0090] Furthermore, the annular knife 140 continues to move toward the anvil cap 310 , cuts off the washer ring 315 , and causes the anvil cap 310 to pop open, releasing the second patch 220 .

[0091] In other embodiments, after the anvil cap 310 and the anvil 320 are ejected, the anvil cap 310 can be contracted with the central axis body 410 and pass through the anvil 320. Furthermore, the anvil assembly 300 is moved with the central axis assembly 400 and taken out of the human body. The staple cartridge assembly 100 for the tubular stapler 1000 and the tubular stapler 1000 provided by the present disclosure are disposable devices. The staple cartridge assembly 100 has a patch fixing member 110 to connect the first patch 210 with the staple cartridge 120, effectively preventing the first patch 210 from falling out of the stapler. When the first patch 210 is cut off and falls out by the annular knife 140, it cannot be installed back into the tubular stapler 1000 again, which can avoid the pollution caused by private patch replacement, so as to ensure the use safety and hygienic safety of medical devices.

[0092] The biomaterial used in the first patch in the present application is selected from a degradable polymer material or a degradable animal-derived biomaterial. Preferably, the degradable animal-derived biomaterial includes a dermal matrix, pericardium, peritoneum, bladder submucosa or small intestinal submucosa treated with immunogen removal, or a combination of these materials, such as a composition obtained by lamination, weaving, inlaying, etc. Preferably, it includes a decellularized small intestinal submucosa matrix material. The degradable polymer material can be selected from PGA, PLA or PLGA, or a combination of these materials, such as a composition obtained by lamination, weaving, inlaying, etc.

[0093] The specific structure, working principle, and beneficial effects of the stapler magazine assembly 100 for the tubular stapler 1000 and the tubular stapler 1000 provided in the embodiments of the present disclosure can refer to the stapler magazine assembly 100 for the tubular stapler 1000 and the tubular stapler 1000 described in any of the above embodiments, and will not be repeated here.

[0094] Although the present disclosure describes the anvil assembly 300 with the second patch 220 and the staple cartridge assembly 100 with the first patch 210, and uses them together, in fact, the staple cartridge assembly 100 in the present disclosure can be used together with the anvil assembly 300 without the second patch 220, and can also be used together with the anvil assembly with patches in other forms. That is, the staple cartridge assembly 100 in the present disclosure is versatile and can be used as a component of various types of tubular staplers.

[0095] like Fig.14 As shown, Fig.14 1 is a schematic diagram of a nail anvil assembly according to a prior art. In practical applications, the nail cartridge assembly 100 provided by the present disclosure can be used in conjunction with a nail anvil assembly without a patch, for example Fig.14The anvil end surface of the anvil 320' shown in the figure is not provided with a patch on the anvil assembly 300'. The nail magazine assembly 100 can also be used in conjunction with an anvil assembly with other forms of patches, such as an anvil assembly 300' equipped with an adaptor patch. Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other. For the system or device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0096] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A stapler assembly for a tubular stapler, characterized in that: include: case, A staple cartridge, disposed inside the housing and used for storing staples; A patch fixing member is arranged inside the nail magazine, and the patch fixing member includes: The fixing body; A first clamping portion, wherein a plurality of the first clamping portions are provided and used for connecting the nail magazine; A first patch, the first patch is constructed as an annular structure, including a first patch body and a first patch connecting portion, the first patch body covers the end surface of the staple cartridge, and the first patch connecting portion is connected to the patch fixing member; a plurality of first patch connecting portions are provided, and the plurality of first patch connecting portions are discretely arranged at the inner ring edge of the first patch body and extend in a direction substantially perpendicular to the first patch body; A positioning shaft core is arranged inside the housing, and a clamping groove is arranged on the outer side wall of the positioning shaft core for connecting with the first clamping portion of the patch fixing member. Wherein, the patch fixing piece further includes: a second clamping portion, a plurality of which are provided, extending along the fixing piece body in a direction close to the first patch, and used for connecting the first patch.

2. The stapler cartridge assembly for a tubular stapler according to claim 1, characterized in that: The first patch connecting portion is provided with a first through hole for connecting with the patch fixing piece.

3. The stapler cartridge assembly for a tubular stapler according to claim 2, characterized in that: The second clamping portion is provided with a protrusion, and the protrusion passes through the first through hole to connect the first patch connecting portion with the second clamping portion.

4. The stapler cartridge assembly for a tubular stapler according to claim 1, characterized in that , the nail magazine assembly also includes: An annular knife, wherein the annular knife sleeve is arranged outside the positioning shaft core and moves in the length direction of the positioning shaft core.

5. The stapler cartridge assembly for a tubular stapler according to claim 4, characterized in that: The annular knife has a storage position and a release position relative to the nail magazine. When the annular knife is in the storage position, the annular knife is stored inside the nail magazine; When the annular knife is in the release position, the end of the annular knife extends out of the end of the staple cartridge to cut off the first patch. Wherein, the annular knife cuts off the first patch after switching from the storage position to the release position.

6. A tubular stapler, characterized in that: include: A stapler cartridge assembly for a tubular stapler according to any one of claims 1 to 5.

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