Anastomosis reinforcement patch and pre-placed patch stapler

Abstract

This disclosure provides an anastomosis reinforcement patch, assembled in a staple cartridge, comprising: a patch body, the patch body being annular in structure, the annular structure having at least two pores on its surface, with a cutting position between the pores; and a first connecting portion perpendicular to and connected to the patch body, the first connecting portion having a first connecting hole configured to connect with an external connecting line to assemble the anastomosis reinforcement patch in the staple cartridge. When an external annular blade cuts the patch body along the cutting position, the annular structure inside the cutting position detaches from the patch body, causing the remaining portion of the pores to form an open opening on the side facing the cutting position. The multiple pores and the inner diameter of the annulus form a toothed structure. This toothed structure allows the anastomosis to be relatively relaxed around its diameter after cutting, reducing pressure at the anastomosis edge and lowering fluid resistance at the anastomosis.

Description

Technical Field

[0001] This disclosure relates to the field of medical device technology, and more specifically, to an anastomosis reinforcement patch and a pre-placed patch stapler. Background Technology

[0002] The application of staplers has greatly promoted the development of modern surgery and minimally invasive surgery, marking a milestone. Staplers can simultaneously cut and fix tissues with staples, and are widely used for cutting, suturing, or anastomosing organs such as the intestines, stomach, lungs, and pancreas. However, the rigidity of staples alone cannot completely prevent leakage and bleeding at the anastomosis site. This is because the staples are rigid structures that cannot perfectly match the flexibility of soft tissues, leading to leakage and bleeding at the staple holes. Furthermore, due to differences in the characteristics of soft tissues in different areas, some soft tissues, such as the lungs, have lower strength, potentially posing a risk of anastomotic tearing. To address these issues, anastomotic reinforcement patches can be used in conjunction with staplers. This allows the stapler to cut and close the wound while simultaneously fixing the reinforcement patch to the wound, sealing the staple holes, increasing wound strength, and thus preventing leakage and bleeding. Summary of the Invention

[0003] The purpose of this disclosure is to address the technical problems in related technologies by providing an anastomosis reinforcement patch and a pre-placed patch stapler. The specific solution is as follows:

[0004] A first aspect of this application provides an anastomosis reinforcement patch capable of being fitted into a staple cartridge, comprising: a patch body having an annular structure, the annular structure having at least two pores on its surface, the annular structure having a cutting position penetrating the pores, the cutting position being cut by an external annular blade, the cutting position forming a flow channel inside; and a first connecting portion perpendicular to and connected to the patch body, the first connecting portion having a first connecting hole configured to connect with an external connecting line to fit the anastomosis reinforcement patch into the staple cartridge, wherein when the external annular blade cuts the patch body along the cutting position, the annular structure inside the cutting position detaches from the patch body, causing the remaining portion of the pores to form an open opening on the side facing the cutting position.

[0005] In some embodiments, the first connecting portion has a first connecting hole configured to be connected to an external connecting line to assemble the anastomosis reinforcement patch into the staple cartridge.

[0006] In some embodiments, the patch body further includes a first stapling portion located between two adjacent aperture portions and configured to receive an external stapling.

[0007] In some embodiments, in the radial direction of the annular structure, the pore portion has a first end adjacent to the inner ring and a second end adjacent to the outer ring, and the distance from the cut position to the second end is greater than 1 / 2 of the distance from the cut position to the edge of the outer ring.

[0008] In some embodiments, the patch body further includes a second stapling portion located between the second end and the outer ring edge, configured to receive an external stapling.

[0009] In some embodiments, the patch body further includes a positioning hole disposed between the two second mating portions, configured to ensure accurate installation of the anastomosis reinforcement patch and the staple cartridge, wherein the positioning hole and the positioning post cooperate to form a single mating method between the anastomosis reinforcement patch and the staple cartridge.

[0010] A second aspect of this disclosure provides an anastomosis device with a pre-placed patch, comprising: a staple cartridge assembly including a staple cartridge having a staple cartridge end face; and an anastomosis reinforcement patch provided in the first aspect of this disclosure, wherein at least a portion of the anastomosis reinforcement patch covers the staple cartridge end face.

[0011] In some embodiments, the staple cartridge assembly includes: a second connecting portion axially sleeved outside the staple cartridge, having a second connecting hole; and a connecting line passing through the second connecting hole and a first connecting hole of the anastomosis reinforcement patch, configured to connect the anastomosis reinforcement patch to the staple cartridge.

[0012] In some embodiments, the length of the second connecting portion in the axial direction of the staple cartridge is greater than 1 / 2 of the length of the staple cartridge.

[0013] In some embodiments, the first connecting hole and the second connecting hole are on the same straight line in the axial direction of the staple cartridge.

[0014] In some embodiments, the staple cartridge further includes a lead groove disposed between the end face of the staple cartridge and the second connecting portion, configured to prevent the connecting wire from tangling around the staple cartridge.

[0015] In some embodiments, the staple cartridge includes a positioning post disposed on the end face of the staple cartridge and configured to connect with the positioning hole of the anastomosis reinforcement patch.

[0016] In some embodiments, the staple cartridge further includes: a staple placement groove, a portion of which is open at the end face of the staple cartridge and configured to receive external anastomotic staples; in response to the anastomosis reinforcement patch being fitted into the staple cartridge, a first and a second stapling portion of the anastomosis reinforcement patch covers the staple placement groove.

[0017] In some embodiments, the staple cartridge further includes an annular blade movably disposed inside the staple cartridge and configured to cut the anastomosis reinforcement patch.

[0018] Compared with related technologies, the above-described solutions of this disclosure have at least the following beneficial effects:

[0019] In the anastomosis reinforcement patch and pre-placed patch anastomosis device provided in this disclosure, the anastomosis reinforcement patch has a porous portion. When the anastomosis reinforcement patch is applied to the anastomosis device, an outer annular blade cuts the patch body of the anastomosis reinforcement patch along the cutting position. In response to the outer annular blade cutting the cutting position, the annular structure inside the cutting position detaches from the patch body, and the remaining portion of the porous portion forms an open opening on the side facing the cutting position. The shape structure of the open opening in the inner diameter can make the anastomosis after cutting present a relatively relaxed state around the diameter, weakening the circumferential pressure at the anastomosis and reducing the fluid resistance at the anastomosis.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of an anastomotic reinforcement patch according to an exemplary embodiment.

[0023] Figure 2 This is a schematic diagram of the structure of an anastomotic reinforcement patch according to an exemplary embodiment.

[0024] Figure 3 This is a schematic diagram of the structure of a cut anastomotic reinforcement patch according to an exemplary embodiment.

[0025] Figure 4 This is a schematic diagram of the structure of a staple cartridge assembly according to an exemplary embodiment.

[0026] Figure 5 This is a cross-sectional view of a staple cartridge according to an exemplary embodiment.

[0027] Figure 6 This is a schematic diagram of a staple cartridge structure according to an exemplary embodiment.

[0028] Figure 7 This is a schematic diagram illustrating the positional relationship between a pin slot and a hole according to an exemplary embodiment.

[0029] Figure label:

[0030] The patch body 100, the cutting position 101, the hole 102, the positioning hole 103, the side slot 104, the first connecting hole 105, the first connecting part 110, the first fastening part 120, and the second fastening part 130.

[0031] 200 staple cartridge, 201 staple placement groove, 202 second connecting hole, 203 lead wire groove, 210 staple cartridge end face, 211 positioning post, 220 connecting wire, 230 second connecting part, 240 ring blade;

[0032] 1000 anastomotic reinforcement repair patch, 2000 staple cartridge assembly. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this disclosure clearer, the disclosure will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0034] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the disclosure. The singular forms “a,” “the,” and “the” as used in the embodiments of this disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise; “multiple” generally includes at least two, and other quantifiers are similarly intended.

[0035] It should be understood that although the terms first, second, third, etc., may be used to describe embodiments of this disclosure, these descriptions should not be limited to these terms. These terms are only used to distinguish the described objects. For example, first may also be referred to as second without departing from the scope of embodiments of this disclosure, and similarly, second may also be referred to as first. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] It should be understood that the term "and / or" as used herein is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0037] It is further understood that the terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0038] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0040] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0041] In related technologies, the anastomotic reinforcement patch used in anastomotic devices is mostly rectangular, arc-shaped, or annular in structure. Among these, the annular anastomotic reinforcement patch is used in conjunction with a tubular anastomotic device. When the annular blade of the tubular anastomotic device cuts off the anastomotic reinforcement patch, the inner ring of the patch and the inner ring of the cut portion of the anastomosis together form a circular incision. At this point, the anastomosis is clamped by two anastomotic reinforcement patches with circular inner rings. Because the inner ring structure of the anastomotic reinforcement patch is intact and the edge is continuous, when fluid passes through the anastomosis, the support force provided by the patch at the edge of the anastomosis is relatively large, making expansion difficult and potentially causing localized obstruction due to fluid retention.

[0042] To address the aforementioned technical problems, this disclosure provides an anastomosis reinforcement patch and a pre-installed patch stapler, comprising: a patch body, the patch body being an annular structure, the annular structure having at least two pores on its surface, with a cutting position between the pores; and a first connecting portion perpendicular to and connected to the patch body, the first connecting portion having a first connecting hole configured to connect with an external connecting line to assemble the anastomosis reinforcement patch into the staple cartridge, wherein when an external annular blade cuts the patch body along the cutting position, the annular structure inside the cutting position detaches from the patch body, causing the remaining portion of the pores to form an open opening on the side facing the cutting position.

[0043] In the anastomosis reinforcement patch and pre-placed patch anastomosis device provided in this disclosure, the anastomosis reinforcement patch has a porous portion. When the anastomosis reinforcement patch is applied to the anastomosis device, an outer annular blade cuts the patch body of the anastomosis reinforcement patch along the cutting position. In response to the outer annular blade cutting the cutting position, the annular structure inside the cutting position detaches from the patch body, and the remaining portion of the porous portion forms an open opening on the side facing the cutting position. The shape structure of the open opening in the inner diameter can make the anastomosis after cutting present a relatively relaxed state around the diameter, weakening the circumferential pressure at the anastomosis and reducing the fluid resistance at the anastomosis.

[0044] The optional embodiments of this disclosure are described in detail below with reference to the accompanying drawings.

[0045] A first aspect of this application provides an anastomotic reinforcement and repair patch 1000, which can be assembled into a staple cartridge 200 for repairing anastomotic joints. Figure 1As shown, the anastomosis reinforcement patch 1000 includes: a patch body 100 and a first connecting portion 110. The patch body 100 is an annular structure. The surface of the annular structure has a cutting position 101 and a hole 102. The cutting position 101 penetrates the hole 102. In response to an external annular blade cutting the cutting position 101, the annular structure inside the cutting position 101 detaches from the patch body 100.

[0046] The annular structure surface is provided with at least two pores 102, and the annular structure surface has a cutting position 101, which penetrates through the pores.

[0047] 102, in response to an external annular blade cutting off the cutting position 101, a flow channel is formed inside the cutting position 101.

[0048] Since the cutting position 101 penetrates the aperture 102, the remaining portion of the aperture 102 forms an open opening on the side facing the cutting position 101. After the annular blade cuts the patch body 100, the inner circumference of the aperture 102 and the inner circumference of the patch body 100 together form a toothed structure. The toothed structure can reduce the flow resistance at the anastomosis joint, allowing the fluid at the anastomosis joint to pass smoothly. The first connecting portion 110 is connected to the outer ring of the patch body 100 and is configured to stably assemble the patch body 100 into the staple cartridge 200.

[0049] In some embodiments, the surface of the patch body 100 is provided with at least two pores 102, and there is a preset distance between the two pores 102, the preset distance being able to accommodate at least one external staple.

[0050] In some embodiments, the patch body 100 includes a plurality of pores 102, the pores 102 penetrating the surface of the patch body 100 and covering at least a portion of the cut position 101, that is, the cut position 101 penetrating the pores 102.

[0051] Specifically, the anastomosis reinforcement patch 1000 is used in conjunction with the staple cartridge 200 for assembly into a stapler to repair the anastomosis by firing the stapler. When the anastomosis reinforcement patch 1000 is assembled into the staple cartridge 200, the patch body 100 fits against the staple cartridge end face 210 of the staple cartridge 200, and the first connecting portion 110 is sleeved on the side of the staple cartridge 200, ensuring a stable connection between the anastomosis reinforcement patch 1000 and the staple cartridge 200. In response to the annular blade of the staple cartridge 200, the anastomosis reinforcement patch 1000 is cut along the cutting position 101. The inner circumferential edge of the patch body 100 is serrated. The cut anastomosis reinforcement patch 1000 is as follows: Figure 2 As shown.

[0052] The serrated structure of the biomaterial anastomosis reinforcement patch is expandable. The addition of the reinforcement patch at the anastomosis site increases the overall thickness. Compared to a ring-shaped reinforcement patch after cutting, the serrated structure, combined with the elastic extensibility of the tissue and material itself, allows the anastomosis site to expand to a greater extent when fluid flows through, facilitating the passage of material and thus preventing blockage.

[0053] In some embodiments, a plurality of pores 102 are provided in the circumferential direction of the patch body 100, and the plurality of pores 102 are evenly arranged.

[0054] In some embodiments, such as Figure 3 As shown, in the radial direction of the annular structure, the aperture portion 102 has a first end 1021 adjacent to the inner ring and a second end 1022 adjacent to the outer ring. In the circumferential direction of the annular structure, the width of the first end 1021 may be the same as or different from the width of the second end 1022; preferably, in the circumferential direction of the annular structure, the width of the first end 1021 is greater than the width of the second end 1022; or in the circumferential direction of the annular structure, the width of the first end 1021 is less than the width of the second end 1022. When the outer annular blade cuts the patch body 100 along the cutting position 101, the inner ring of the patch body 100 forms a toothed structure. This toothed structure ensures smooth movement when the object passes through the anastomosis opening, avoiding blockage or clogging. Preferably, the toothed structure is a shape that gradually narrows from the base to the tooth tip.

[0055] In some embodiments, the distance from the cutting position 101 to the second end 1022 is not less than half the distance from the cutting position 101 to the outer ring edge of the patch body 100. The distance from the cutting position 101 to the second end 1022 is the depth to which the pore portion 102 can expand for the anastomosis. The greater the distance from the cutting position 101 to the second end 1022, the greater the resistance to movement of fluid and / or objects passing through the anastomosis. If the distance from the cutting position 101 to the second end 1022 is too small, when an object passes through the anastomosis, the inner ring portion of the patch body 100 will experience greater resistance due to the small degree of expansion, affecting the movement of fluid and / or objects through the anastomosis.

[0056] In some embodiments, such as Figure 3As shown, the patch body 100 further includes a first engagement portion 120 and a second engagement portion 130. The first engagement portion 120 is located between two adjacent aperture portions 102 and is configured to accommodate an external anastomotic staple. The second engagement portion 130 is located between the second end 1022 and the outer ring edge and is configured to accommodate an external anastomotic staple. When the anastomosis reinforcement patch is assembled into the staple cartridge, in response to the firing of the external anastomotic staple, the staple penetrates the first engagement portion 120 and the second engagement portion 130 respectively, achieving the engagement of the patch body 100 with the area around the anastomosis. The positions of the first engagement portion 120 and the second engagement portion 130 in the axial direction of the patch body 100 avoid the aperture portions 102. After the staple is fired, neither the staple tip nor the staple body penetrates the aperture portion 102; that is, the firing of the staple does not affect the opening of the aperture portion 102.

[0057] In some embodiments, the width of the aperture 102 in the tangential direction of the patch body 100 is not less than 0.1 mm. The width of the aperture 102 is set such that the aperture 102 does not cover the staple placement groove 201 of the staple cartridge end face 210. If the aperture 102 covers the staple placement groove 201, after the stapler is fired, the tissue at the staple joint and the overall thickness of the patch will be uneven, posing a risk of poor staple formation.

[0058] In some embodiments, the first connecting portion 110 may further include a side slot 104, the side slot 104 being disposed on the side of the first connecting portion 110, the end of the side slot 104 extending to the edge of the main body portion, configured to make it easier for the anastomosis reinforcement patch 1000 to be connected to the staple cartridge 200.

[0059] It should be noted separately that whether or not the surface of the first connecting part 110 is provided with a side slot 104 does not affect the assembly of the patch body 100 with the external structure. The external structure can be a nail cartridge or a nail anvil.

[0060] In some embodiments, the patch body 100 further includes one or more positioning holes 103, which are disposed through the patch body 100 and between the two second stapled portions 130, configured to allow the anastomosis reinforcement patch 1000 to be accurately installed with the staple cartridge 200.

[0061] In some embodiments, the positioning hole 103 is disposed between the first engagement portion 120 or the second engagement portion 130 and the outer ring edge. This position can increase the extension space of the hole portion 102 in the axial direction of the patch body 100.

[0062] In some embodiments, the diameter of the positioning hole 103 is 0.2-2.4 mm. If the diameter of the positioning hole 103 is less than 0.2 mm, it is easy to encounter problems with alignment when assembling the anastomosis reinforcement patch 1000. If the diameter of the positioning hole 103 is greater than 2.4 mm, the large diameter of the positioning hole 103 may affect the setting of the pore portion 102 or affect the firing of the anastomosis staples, thus failing to ensure the normal operation of the anastomosis device.

[0063] The biomaterials used in the anastomosis reinforcement patch 1000 described in this application are selected from biodegradable polymer materials or biodegradable animal-derived biomaterials. Preferably, the biodegradable animal-derived biomaterials include dermal matrix, pericardium, peritoneum, bladder submucosa, or small intestinal submucosa treated with immunogen removal, or combinations of these materials, such as compositions obtained by lamination, weaving, or embedding. Preferably, decellularized small intestinal submucosa matrix materials are included. The biodegradable polymer materials may be selected from PGA, PLA, or PLGA, or combinations of these materials, such as compositions obtained by lamination, weaving, or embedding.

[0064] In some embodiments, such as Figure 3 As shown, the first connecting portion 110 also has a first connecting hole 105, which is provided individually or in pairs in the first connecting portion 110 and configured to be used in conjunction with an external connecting line to assemble the anastomosis reinforcement patch 1000 to the end of the staple cartridge.

[0065] For example, on the surface of the first connecting part 110, the first connecting hole 105 can be provided in one, two, or more ways. The different number of first connecting holes 105 can be matched with different wire connection methods, so that the anastomosis reinforcement patch 1000 can select the connection method according to the conditions of the external structure.

[0066] It should be noted separately that in some other embodiments, the surface of the first connecting part 110 may not have the first connecting hole 105. Regardless of whether the surface of the first connecting part 110 is provided with the first connecting hole 105, it does not affect the assembly of the patch body 100 with the external structure. The external structure may be a nail cartridge or a nail anvil.

[0067] A second aspect of this disclosure provides a stapler with a pre-placed patch, the stapler including the anastomosis reinforcement patch 1000 provided in the first aspect of this disclosure and a staple cartridge assembly 2000, the staple cartridge assembly 2000 including a staple cartridge 200, such as... Figure 4As shown, in order to save space in the staple cartridge 200, the end of the staple cartridge 200 may not have a fixation device for the anastomosis reinforcement patch 1000. Therefore, it is necessary to fix the anastomosis reinforcement patch 1000 directly to the end of the staple cartridge 200, or fix the anastomosis reinforcement patch 1000 to the end of the staple cartridge 200 through an external connection structure.

[0068] In some embodiments, such as Figure 5 , Figure 6 As shown, one end of the staple cartridge 200 has a staple cartridge end face 210, and the staple cartridge end face 210 is provided with a positioning post 211. The positioning post 211 is used to cooperate with the positioning hole 103 to make the anastomosis reinforcement patch 1000 stably connected to the staple cartridge end face 210. In the circumferential direction of the staple cartridge 200, the positioning post 211 is disposed between any two staple placement slots 201 adjacent to the outer ring.

[0069] In some embodiments, when there is one positioning hole 103, there is also one positioning post 211 at the end face 210 of the staple cartridge. The cooperation between the positioning hole 103 and the positioning post 211 ensures a single engagement between the anastomosis reinforcement patch 1000 and the staple cartridge assembly 2000. This is because the staple cartridge assembly 2000 contains multiple staples, and this single engagement ensures that the opening 102 will not cover the staples.

[0070] In some embodiments, when there are multiple positioning holes 103, there are also multiple positioning posts 211 at the end face 210 of the staple cartridge. Through a specific configuration of the multiple positioning holes 103 and multiple positioning posts 211, a single engagement method is achieved between the anastomosis reinforcement patch 1000 and the staple cartridge assembly 2000. For example, in some embodiments, when the multiple positioning holes 103 are on the same circumference, the multiple positioning holes 103 are arranged with uneven spacing on the circumference, and the positioning posts 211 are also arranged in the same manner, so that a single engagement method is achieved between the anastomosis reinforcement patch 1000 and the staple cartridge assembly 2000, and the circumference is concentric with the cutting position 101. In other embodiments, when the plurality of positioning holes 103 are located on multiple circumferences, the positioning posts 211 are also configured in the same manner, ensuring a single engagement between the anastomosis reinforcement patch 1000 and the staple cartridge assembly 2000. The circumferences are concentric with the cutting position 101, and the plurality of circumferences are concentric with the cutting position 101. In other embodiments, when the plurality of positioning holes 103 are configured randomly, the positioning posts 211 are also configured in the same manner, ensuring a single engagement between the anastomosis reinforcement patch 1000 and the staple cartridge assembly 2000. In other embodiments, even when the plurality of positioning holes 103 are not identical in shape or size, the positioning posts 211 are still configured in the same manner, ensuring a single engagement between the anastomosis reinforcement patch 1000 and the staple cartridge assembly 2000.

[0071] In some embodiments, the height of the positioning post 211 is 0.1-1mm, preferably 0.2-0.5mm. If the height of the positioning post 211 is too large, the local area of ​​the anastomosis may be clamped too tightly when the stapler clamps the anastomosis. If the height of the positioning post 211 is too small, assembly difficulties may occur when the anastomosis reinforcement patch 1000 is assembled into the staple cartridge 200. In addition, the anastomosis reinforcement patch 1000 may fall off and / or slip during the clamping process.

[0072] In some embodiments, such as Figure 5 As shown, a staple placement groove 201 is provided on the staple cartridge end face 210, and a portion of the staple placement groove 201 is open on the staple cartridge end face to accommodate staples. In response to the firing of the stapler, the staples extend out from the staple placement groove 201.

[0073] When the anastomosis reinforcement patch 1000 is used in conjunction with the staple cartridge 200, the anastomosis reinforcement patch 1000 covers the end face of the staple cartridge 200. In response to the anastomosis reinforcement patch 1000 being assembled into the staple cartridge 200, the first fastening portion 120 and the second fastening portion 130 of the anastomosis reinforcement patch 1000 cover the staple placement groove 201. After the stapler is fired, the staples will extend from the staple placement groove 201. Furthermore, the staples are fastened to the anvil end face of the stapler, forming a "B-shaped" structure, thus achieving suturing of the anastomosis reinforcement patch 1000 with the anastomosis.

[0074] In some embodiments, in order to ensure that the inner ring of the anastomosis reinforcement patch 1000 after cutting has a complete toothed structure, the pore portion 102 needs to avoid the pin placement groove 201. Therefore, in the circumferential direction of the patch body 100, the distance between two adjacent pore portions 102 can accommodate at least one anastomosis pin.

[0075] In some embodiments, such as Figure 6 As shown, the staple cartridge assembly 2000 also includes a ring blade 240, which is disposed inside the staple cartridge 200 and moves in the height direction of the staple cartridge 200. The ring blade 240 has a retracted position and a released position relative to the staple cartridge 200. Before the staples are fired, the ring blade 240 is normally in the retracted position. In response to the firing of the staples, the ring blade 240 switches from the retracted position to the released position. When the ring blade 240 is in the released position, it cuts a portion of the human tissue and the pore portion 102 at the anastomosis site along the cutting position 101, causing the remaining portion of the pore portion 102 to form an open opening facing the cutting position 101. When fluid or objects pass through the anastomosis site, the toothed structure formed by the inner ring of the patch body 100 and the edge of the pore portion 102 can increase the expansion when fluid or objects pass through, increasing the passage area, effectively relieving blockage, and preventing obstruction.

[0076] In some embodiments, such as Figure 4 , Figure 5 As shown, the staple cartridge assembly also includes a second connecting portion 230. The second connecting portion 230 can be an elastic tubular structure, sleeved on the outside of the staple cartridge 200. Under its own elasticity, the second connecting portion 230 fits tightly against the staple cartridge. Since the end of the staple cartridge 200 may not have a fixing device for the anastomosis reinforcement patch 1000, it can be connected to the anastomosis reinforcement patch 1000 through the second connecting portion 230 to fix the anastomosis reinforcement patch 1000 to the end of the staple cartridge 200.

[0077] In some embodiments, to ensure a stable connection between the second connecting portion 230 and the staple cartridge 200, the length of the second connecting portion 230 in the axial direction of the staple cartridge 200 is greater than 1 / 2 and less than 2 / 3 of the length of the staple cartridge 200. If the second connecting portion 230 is too long, it will affect the assembly of the anastomosis reinforcement patch 1000 and the staple cartridge 200; if the second connecting portion 230 is too short, the connection between the second connecting portion 230 and the staple cartridge 200 will be unstable.

[0078] In some embodiments, the second connecting portion 230 has a second connecting hole 202 at the end away from the staple cartridge end face 210. Specifically, the connecting line 220 passes through the first connecting hole 105 and the second connecting hole 202 to connect the anastomosis reinforcement patch 1000 to the second connecting portion 230, thereby assembling the anastomosis reinforcement patch 1000 with the staple cartridge 200. When the connecting line 220 assembles the anastomosis reinforcement patch 1000 with the staple cartridge 200, the first connecting hole 105 and the second connecting hole 202 are on the same straight line in the axial direction of the staple cartridge 200. Under this condition, the required connecting line 220 is the shortest and is less likely to entangle with the staple cartridge 200.

[0079] In some embodiments, the staple cartridge 200 further includes a lead groove 203, which is disposed on the outer wall of the staple cartridge 200 and extends along the height direction of the staple cartridge 200, configured to guide the connecting wire 220. When the connecting wire 220 connects the anastomosis reinforcement patch 1000 to the second connecting portion 230, at least a portion of the middle part of the connecting wire 220 passes through the interior of the lead groove 203, preventing the connecting wire 220 from wrapping around the staple cartridge 200 or covering the end face of the staple cartridge. If the connecting wire 220 covers the end face 210 of the staple cartridge, after the stapler is fired, there will be excess connecting wire 220 stapled on the anastomosis surface, which may obstruct the anastomosis and cause fluid flow obstruction at the anastomosis, which may lead to embolism and local tissue necrosis in severe cases.

[0080] In some embodiments, the connecting line 220 can be a single line or a double line. The type of connecting line 220 and the connection method used do not affect the application of the staple cartridge assembly 2000 provided in this disclosure in the stapler, as long as the connecting line 220 does not wrap around the staple cartridge 200 or cover the end face of the staple cartridge.

[0081] In some embodiments, such as Figure 7As shown, the positional relationship between the perforated portion 102 and the staple placement groove 201 on the staple cartridge end face 210 is illustrated. Two rows of staple placement grooves 201 are arranged in a ring on the staple cartridge end face 210. The projection of the perforated portion 102 along the axial direction of the staple cartridge 200 is located between every two adjacent staple placement grooves 201 in the inner ring. When the stapler is fired, the staples abut against the staple placement grooves 201. Under the action of the pushing force, the staples form a "B-shaped" structure within the staple placement grooves 201, completing the attachment of the anastomosis reinforcement patch 1000 to the anastomosis.

[0082] It should be noted separately that, Figure 7 The illustrated scenario shows the pore portion 102 having its maximum width and minimum spacing in the circumferential direction of the patch body 100. In this state, although the projection of the pore portion 102 onto the staple cartridge 200 in the axial direction covers a small portion of the staple placement groove 201, as... Figure 7 The coverage area shown will not affect the firing of the staples, and the staples that have been fired and sutured will not damage the original structure of the aperture 102. This situation can be regarded as the projection of the staple cartridge 200 in the aperture 102 along the axis not overlapping with the staple placement groove 201.

[0083] The specific structure, working principle, and beneficial effects of the anastomosis reinforcement patch and pre-placed patch stapler provided in this disclosure can be found in any of the above embodiments of the anastomosis reinforcement patch and pre-placed patch stapler, and will not be repeated here.

[0084] 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.

[0085] 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 joint reinforcement patch, characterized in that, Capable of being fitted into a staple cartridge, including: The patch body has an annular structure with at least two pores on its surface and a cutting position that penetrates the pores. The cutting position is cut off by an external annular blade, and a flow channel is formed inside the cutting position. The first connecting part is perpendicular to the patch body and connected to the patch body. When the external annular blade cuts the patch body along the cutting position, the annular structure inside the cutting position will detach from the patch body, causing the remaining part of the hole to form an open opening on the side facing the cutting position.

2. The anastomotic reinforcement patch according to claim 1, characterized in that, The first connecting portion has a first connecting hole, configured to be connected to an external connecting line to assemble the anastomosis reinforcement patch into the staple cartridge.

3. The anastomotic reinforcement patch according to claim 1, characterized in that, The patch body also includes: The first engagement portion, located between two adjacent aperture portions, is configured to accommodate an external staple.

4. The anastomotic reinforcement patch according to claim 3, characterized in that, In the radial direction of the annular structure, the pore portion has a first end adjacent to the inner ring and a second end adjacent to the outer ring, and the distance from the cut position to the second end is greater than 1 / 2 of the distance from the cut position to the edge of the outer ring.

5. The anastomotic reinforcement patch according to claim 4, characterized in that, The patch body also includes: The second engagement portion, located between the second end and the outer ring edge, is configured to accommodate an external anastomotic staple.

6. The anastomotic reinforcement patch according to claim 5, characterized in that, The patch body also includes: A positioning hole is provided between the two second mating parts, configured to ensure accurate installation of the anastomosis reinforcement patch and the staple cartridge. The cooperation between the positioning hole and the positioning post allows the anastomosis reinforcement patch and the staple cartridge to form a single mating method.

7. A stapler with a pre-placed patch, characterized in that, include: A staple cartridge assembly, the staple cartridge assembly including a staple cartridge, the staple cartridge having a staple cartridge end face; and The anastomosis reinforcement patch according to any one of claims 1-6, wherein the anastomosis reinforcement patch covers the end face of the staple cartridge.

8. The stapler with a pre-placed patch according to claim 7, characterized in that, The staple cartridge component includes: The second connecting part is axially sleeved on the outside of the staple cartridge and has a second connecting hole; A connecting line passes through the second connecting hole and the first connecting hole of the anastomosis reinforcement patch, configured to connect the anastomosis reinforcement patch to the staple cartridge.

9. The stapler with a pre-placed patch according to claim 8, characterized in that, In the axial direction of the staple cartridge, the length of the second connecting portion is greater than 1 / 2 of the length of the staple cartridge.

10. The stapler with a pre-placed patch according to claim 8, characterized in that, In the axial direction of the staple cartridge, the first connecting hole and the second connecting hole are on the same straight line.

11. The stapler with a pre-placed patch according to claim 8, characterized in that, The staple cartridge also includes: A lead wire groove is disposed between the end face of the staple cartridge and the second connecting portion, configured to prevent the connecting wire from tangling around the staple cartridge.

12. The stapler with a pre-placed patch according to claim 7, characterized in that, The staple cartridge includes: A positioning post is disposed on the end face of the staple cartridge and configured to connect with the positioning hole of the anastomosis reinforcement patch.

13. The stapler with a pre-placed patch according to claim 7, characterized in that, The staple cartridge also includes: A staple placement slot, a portion of which is open at the end face of the staple cartridge, is configured to accommodate external staples; In response to the anastomosis reinforcement patch being assembled into the staple cartridge, the first and second staple engagement portions of the anastomosis reinforcement patch cover the staple placement groove.

14. The stapler with a pre-placed patch according to claim 7, characterized in that, The staple cartridge also includes: A ring-shaped cutter is movably disposed inside the staple cartridge and configured to cut the anastomosis reinforcement patch.

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