Patch, anvil assembly and stapler cartridge assembly

Abstract

The present disclosure provides a patch, an anvil assembly and a stapler stapler assembly, wherein the patch is constructed as a long strip structure, including: a mounting hole, which is arranged through the patch, and is used to connect the anvil plate of the anvil seat or the stapler of the stapler assembly; the mounting hole includes a connecting portion, which is arranged inside the mounting hole, and is used to reinforce the mounting hole so that the patch is stably connected to the anvil plate or the stapler; an auxiliary knife groove, which is arranged through the patch and extends along the length direction of the patch, wherein the center line of the auxiliary knife groove in the length direction is the central axis of the patch. The anvil plate includes: an anvil groove, which is arranged on the surface of the anvil plate, and is used to squeeze the staples; a patch hook, which is arranged on the surface of the anvil plate, and is used to connect the patch, wherein the patch is connected to the patch hook and covers the anvil groove, and the edge of the patch hook extends toward the edge of the patch and covers the edge of the patch.

Description

Technical Field

[0001] The present disclosure relates to the technical field of staplers, and in particular to a patch, an anvil assembly, and a stapler cartridge assembly. Background Art

[0002] The application of staplers has greatly promoted the development of modern surgery and minimally invasive surgery, and is of milestone significance. Staplers can staple tissues through staples while cutting, and are widely used for cutting, suturing or anastomosis of organ tissues such as the intestines, stomach, lungs, and pancreas. However, the rigid stapling of staples alone cannot completely avoid leakage and bleeding of the anastomotic tissue. This is because staples are rigid structures that cannot fully match the flexibility of soft tissues, resulting in leakage and bleeding in the staple holes. In addition, due to differences in the properties of soft tissues in different regions, some soft tissues, such as the lungs, have lower strength and may be at risk of anastomotic tearing.

[0003] 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, the reinforcement patch is fixed to the wound, blocking the holes of the staples and improving the strength of the anastomosis, thereby avoiding leakage and bleeding at the anastomosis. Summary of the invention

[0004] The purpose of the present disclosure is to provide a patch, anvil assembly and stapler cartridge assembly to solve the technical problems in the related art. The specific solution is as follows:

[0005] A first aspect of the embodiments of the present disclosure provides a patch, which is constructed as a long strip structure, including: a mounting hole, extending along the width direction of the patch, penetrating through one end of the patch, and used to connect the nail plate of the nail seat or the nail magazine of the nail magazine assembly; the mounting hole includes a connecting portion, which is arranged in the mounting hole, and is used to reinforce the mounting hole so that the patch is stably connected to the nail plate or the nail magazine, wherein the extension direction of the connecting portion has a preset angle α with the perpendicular direction of the central axis of the patch.

[0006] In some embodiments, the angle α has a value range of 0°<α<90°.

[0007] In some embodiments, the angle α has a value range of 20°≤α≤60°.

[0008] In some embodiments, the angle α has a value range of 20°≤α≤45°.

[0009] In some embodiments, the angle α is 25°, or 30°, or 35°, or 40°.

[0010] In some embodiments, the maximum dimension of the mounting hole in a direction perpendicular to the central axis accounts for 20% to 95% of the maximum width of the patch in this direction.

[0011] In some embodiments, the maximum dimension of the mounting hole in a direction perpendicular to the central axis accounts for 30% to 75% of the maximum width of the patch in this direction.

[0012] In some embodiments, the maximum dimension of the mounting hole in a direction perpendicular to the central axis is 35%, or 40%, or 45%, or 50%, or 55%, or 60%, or 65%, or 70% of the maximum width of the patch along that direction.

[0013] In some embodiments, the patch further includes: an auxiliary knife groove extending along the length direction of the patch, the auxiliary knife groove being constructed as a plurality of intermittently arranged hollow spaces, and the straight line where the auxiliary knife groove is located is the central axis of the patch.

[0014] In some embodiments, the connecting portion divides the mounting hole into a first mounting hole and a second mounting hole, wherein, in response to cutting the connecting portion along the auxiliary knife groove, the first mounting hole and the second mounting hole respectively form a first open opening and a second open opening to facilitate the patch to detach from the nail plate or the nail magazine.

[0015] In some embodiments, the connecting portion has a first end and a second end connected to the mounting hole in a width direction, and a distance from the first end to a center axis of the patch is equal to a distance from the second end to the center axis.

[0016] In some embodiments, one end of the patch is a patch fixed end, and the other end is a patch free end, and the patch free end is used to clamp with the nail plate or the nail magazine to ensure that the patch is stably connected with the nail plate or the nail magazine.

[0017] The second aspect of the present disclosure provides a nail support assembly, comprising: the patch provided in the first aspect of the present disclosure; a nail support plate, comprising: a nail support groove, arranged on the surface of the nail support plate, for extruding and deforming the staples; a knife groove, arranged through the nail support plate, for limiting the cutting path of cutting the patch; a patch hook, arranged on the same side of the nail support plate as the nail support groove, for connecting the patch, wherein the patch is the patch provided in the first aspect of the present disclosure; the patch covers the nail support groove, and the auxiliary knife groove of the patch covers the knife groove.

[0018] In some embodiments, the patch hook includes: a hook fixed end, fixedly connected to the anvil plate; a hook free end, extending in a direction away from the anvil groove, wherein there is a gap between the hook free end and the surface of the anvil plate for accommodating the patch fixed end of the patch.

[0019] In some embodiments, the projection of the free end of the patch hook on the anvil plate can cover the fixed end of the patch.

[0020] In some embodiments, the anvil assembly further comprises: a snap-in groove, disposed at one end of the anvil plate away from the patch hook, for snapping the free end of the patch.

[0021] The third aspect of the present disclosure provides a stapler staple magazine assembly, comprising: the staple support assembly provided in the second aspect of the present disclosure; a staple magazine, comprising: a staple groove, arranged on the surface of the staple magazine, for accommodating staples; a patch hook, arranged on the same side of the staple magazine as the staple groove, for connecting the patch, wherein the patch is the patch provided in one aspect of the present disclosure; the patch is connected to the patch hook and covers the staple groove.

[0022] In some embodiments, the patch hook includes: a hook fixed end, fixedly connected to the staple magazine; and a hook free end, extending in a direction away from the staple groove; wherein there is a gap between the hook free end and the staple magazine surface for accommodating the patch fixed end of the patch.

[0023] In some embodiments, the projection of the free end of the patch hook on the surface of the nail magazine can cover the fixed end of the patch.

[0024] In some embodiments, the stapler staple cartridge assembly further comprises: a snap-in groove, disposed at an end of the staple cartridge away from the patch hook, for snap-in connection with a patch free end of the patch.

[0025] Compared with the related art, the above solution of the embodiment of the present disclosure has at least the following beneficial effects:

[0026] In the patch, nail plate and nail magazine provided by the present disclosure, the patch is provided with a mounting hole and a connecting portion, and the connecting portion is provided in the mounting hole to maintain the stability of the mounting hole. When the cutting knife cuts the patch through the mounting hole, the connecting portion will be cut together. The setting of the connecting portion can keep the mounting hole stable on the one hand, and on the other hand, when the connecting portion is cut, no debris falls, which better meets the hygiene requirements for equipment during surgery.

[0027] 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

[0028] 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:

[0029] Figure 1 is a front view of a dowel assembly according to an exemplary embodiment.

[0030] Figure 2 is a front view of a dowel pin assembly without a patch according to an exemplary embodiment.

[0031] Figure 3 is an exploded view of a dowel seat assembly equipped with a patch according to an exemplary embodiment.

[0032] Figure 4 It is a schematic diagram of the internal structure of a dowel seat assembly according to an exemplary embodiment.

[0033] Figure 5 It is a schematic structural diagram of a nail end cap according to an exemplary embodiment.

[0034] Figure 6 It is a cross-sectional view showing the release of an anvil end cap and an anvil plate according to an exemplary embodiment.

[0035] Figure 7 The present invention is a cross-sectional view showing a nail annulus end cap being fastened to a nail annulus plate according to an exemplary embodiment.

[0036] Figure 8 It is a schematic structural diagram showing the loosening of an anvil end cap and an anvil plate according to an exemplary embodiment.

[0037] Fig. 9 It is a schematic diagram of the structure of a nail anvil end cap fastened to a nail anvil plate according to an exemplary embodiment.

[0038] Fig.10 It is a schematic structural diagram showing a broken first limiting portion according to an exemplary embodiment.

[0039] Fig.11 It is a schematic diagram of the back structure of a dowel seat assembly according to an exemplary embodiment.

[0040] Fig.12 It is a schematic structural diagram of a stapler according to an exemplary embodiment.

[0041] Fig.13It is a schematic structural diagram showing a patch connected to another staple cartridge assembly according to an exemplary embodiment.

[0042] Fig.14 yes Fig.13 A partial enlarged view of part A.

[0043] Reference numerals:

[0044] The anvil plate 100, the clamping groove 101, the cutting groove 102, the anvil groove 103, the first surface 110, the patch hook 111, the second surface 120, the first clamping portion 121, the second clamping portion 122, the third clamping portion 123, the anvil plate side wing 124, and the end cap sliding groove 125;

[0045] Patch 200, mounting hole 201, auxiliary knife groove 202, connecting portion 210, patch free end 221, patch fixed end 222;

[0046] The anvil end cap 300, the end cap base 310, the clamping member 320, the first limiting member 330, the first limiting member end 331, the first limiting portion 332, the first side 333, the second side 334, the second limiting member 340, the second limiting portion 341, and the end cap side wing 350;

[0047] Anvil back plate 400; staple cartridge assembly 1000, stapler staple cartridge assembly 2000;

[0048] Patch hook 111', patch 200', mounting hole 201', patch free end 221', patch fixed end 222', staple cartridge back plate 400', staple cartridge assembly 1000', staple cartridge 1100', staple slot 1101', staples 1110', push structure 1120', staple cartridge end cap 1130', and cutting knife 1140'. DETAILED DESCRIPTION

[0049] 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.

[0050] 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.

[0051] It should be understood that, although the terms first, second, third, etc. may be used to describe in the disclosed embodiments, these descriptions should not be limited to these terms. These terms are only used to distinguish the described objects. For example, without departing from the scope of the disclosed embodiments, 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] In the related art, during the use of the stapler, a patch is used in combination with the stapler. In this way, it is necessary to ensure the stable connection between the patch and the stapler before firing the stapler, and the effective separation of the patch and the stapler after the firing is completed. Otherwise, problems will arise in the use of the instrument. For example, if the patch falls off before the stapler is fired, the patch cannot be accurately fixed at the anastomosis, resulting in the risk of leakage at the anastomosis. Alternatively, if it cannot be effectively separated after firing, then in the process of withdrawing the stapler, the pulling force of withdrawing the stapler will be mistakenly transmitted to the anastomosis, causing tearing of the anastomosis, and there is also the risk of tearing the anastomosis, causing bleeding or leakage, affecting the user's experience. Therefore, it is particularly important to ensure the stable connection between the patch and the anvil plate.

[0058] In view of this, the present disclosure provides a patch, a nail plate and a nail magazine, and optional embodiments of the present disclosure are described in detail below in conjunction with the accompanying drawings.

[0059] The present disclosure provides a patch 200 such as Figure 1 , Figure 3 As shown, the patch 200 is constructed as a long strip structure, having a patch free end 221 and a patch fixed end 222. A mounting hole 201 is provided adjacent to the patch fixed end 222, and the mounting hole 201 extends along the width direction of the patch 200, and is used to connect the patch 200 to the anvil plate 100. The mounting hole 201 can be circular or elliptical, or rectangular, rhombus, or other polygonal, or a combination of the above shapes. The present disclosure does not limit the opening shape of the mounting hole 201, which can be the above shapes, or a combination of the above shapes.

[0060] In some embodiments, the length direction of the mounting hole 201 extends along a direction perpendicular to the central axis of the patch 200, wherein the present disclosure defines a ratio between the length of the mounting hole 201 and the width of the patch 200. The maximum dimension of the mounting hole 201 in the direction perpendicular to the central axis accounts for 20% to 95% of the maximum width of the patch 200, preferably 30% to 75%.

[0061] In other embodiments, the ratio of the maximum dimension of the mounting hole 201 in the direction perpendicular to the central axis to the maximum width of the patch 200 is preferably 35%, 40%, 45%, 50%, 55%, 60%, 65% or 70%.

[0062] In some embodiments, a connecting portion 210 is disposed inside the mounting hole 201, and the connecting portion 210 has a first end and a second end connected to the mounting hole 201, and the distance from the first end to the central axis of the patch is equal to the distance from the second end to the central axis of the patch. Thus, the connecting portion 210 is centered in the width direction of the patch 200, and the mounting hole 201 is used to reinforce the mounting hole 201.

[0063] In some embodiments, the connecting portion 210 divides the mounting hole 201 into a first mounting hole and a second mounting hole, wherein, in response to cutting the mounting hole 201 and the connecting portion 210 along the auxiliary knife groove 202, the first mounting hole and the second mounting hole form a first open opening and a second open opening, respectively.

[0064] On the one hand, the connecting portion 210 can improve the accuracy of the connection between the patch 200 and the nail plate 100, and on the other hand, it can also avoid excessive deformation of the mounting hole 201 during the process of pulling or cutting the patch 200, causing the patch 200 to warp due to excessive deformation.

[0065] In some embodiments, the extending direction of the connecting portion 210 and the extending direction of the mounting hole 201 have an included angle α, such as Figure 1 As shown, the length extension direction of the mounting hole 201 is perpendicular to the central axis direction of the patch 200, and the value range of the angle α is: 0°<α<90°. Preferably, the value range of α is 20°≤α≤60°.

[0066] In some embodiments, the value range of α is preferably 20°≤α≤45°.

[0067] In other embodiments, the value of α is preferably 25°, 30°, 35° or 40°.

[0068] In some embodiments, the patch 200 is provided with an auxiliary knife groove 202, which extends along the length direction of the patch 200, that is, the extension direction of the auxiliary knife groove 202 is perpendicular to the extension direction of the mounting hole 201. The straight line where the auxiliary knife groove is located is the central axis of the patch 200.

[0069] The auxiliary knife groove 202 may be configured as a plurality of intermittently arranged hollow spaces. When cutting the patch 200, the cutting knife may be arranged to cut the patch 200 along the auxiliary knife groove 202. The hollow spaces of the auxiliary knife groove 202 may be rectangular, diamond, circular, elliptical or a combination thereof.

[0070] The present disclosure also provides a nail support plate 100, such as Figure 1 , Figure 2 , Figure 4 and Fig.12 As shown, the anvil plate 100 has a first surface 110 and a second surface 120 which are opposite to each other in the thickness direction, and a plurality of anvil grooves 103 are provided on the first surface 110 , and the plurality of anvil grooves 103 are used to squeeze and deform the staples, and the patch 200 can cover the first surface 110 .

[0071] During the surgical operation, the stapler assembly 1000 of the stapler assembly 2000 is clamped at the position of the tissue to be cut. The stapler assembly 2000 is fired, and the cutting knife of the stapler assembly 1000 cuts the tissue. At the same time, the staples pass through the tissue and the patch 200, and deform at the staple groove 103 to complete the closure of the anastomosis. At this time, the staples fix the patch 200 at the anastomosis by stapling the patch 200. At the same time, the cutting device of the stapler assembly 2000 completes the cutting of the tissue.

[0072] In some embodiments, a patch hook 111 is further provided on the first surface 110 , and the patch hook 111 is used to ensure the accurate positioning of the patch 200 and the first surface 110 of the anvil plate 100 during installation, so that the patch 200 can be accurately installed on the anvil plate 100 .

[0073] Specifically, the patch hook 111 includes a hook fixed end and a hook free end, the hook fixed end is fixedly connected to the anvil plate, and the hook free end extends in a direction away from the anvil groove, wherein there is a gap between the hook free end and the surface of the anvil plate 100 for accommodating the patch fixed end.

[0074] like Figure 1 As shown, the patch 200 may be an axisymmetric structure, and two patch hooks 111 may be provided, and the two patch hooks 111 are symmetrically arranged with the central axis of the patch 200 as a reference. The mounting hole 201 of the patch 200 is sleeved on the patch hook 111 and covers the first surface 110, so that the patch 200 can be accurately positioned and installed on the first surface 110 of the anvil plate 100, and the fixed end of the patch is received in the gap between the free end of the hook and the anvil plate 100.

[0075] It should be noted that the number of the patch hooks 111 may be two or more. The illustrations in the present disclosure only show the nail plate 100 with two patch hooks 111 , but the present disclosure is not limited thereto.

[0076] In some embodiments, the connecting portion 210 is used to reinforce the mounting hole 201 , and the first mounting hole and the second mounting hole are respectively provided with two patch hooks 111 , so that the patch 200 is stably connected to the nail plate 100 .

[0077] In minimally invasive surgery, the operating space is small, which is not conducive to the doctor's observation and surgical operation. Therefore, the surgical instrument must try to avoid any slight deformation and position offset. Since the width of the mounting hole 201 is relatively large, when the patch hook 111 is used to hook the mounting hole 201, the mounting hole 201 may be deformed due to tension. This deformation will affect the flatness of the patch 200 and may cause local distortion and deformation 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 offset of the mounting hole 201 that may occur during the installation process and the patch cutting process.

[0078] Since the mounting hole 201 needs to have a first opening and a second opening after being cut by a cutting knife, the first opening and the second opening of the mounting hole 201 can allow the patch 200 to be directly separated from the patch hook 111, thereby avoiding tearing of the anastomotic stoma due to being pulled by the patch hook 111 when the patch 200 is removed.

[0079] Therefore, the design of the angle α between the extending direction of the connecting portion 210 and the length direction of the patch 200 is more conducive to the disassembly of the patch 200.

[0080] In some embodiments, the edge of the patch hook 111 extends toward the edge of the patch 200 and can cover at least a portion of the patch fixing end 222. When the patch 200 is installed on the anvil plate 100, the patch fixing end 222 may be warped upward due to the tightening of the patch 200. The patch hook 111 can cover the edge of the patch 200 to prevent the surface of the patch 200 from wrinkling or deformation due to the upward warping of the patch fixing end 222.

[0081] When cutting the patch 200, since the cutting knife cuts from the patch fixed end 222 to the patch free end 221, when the cutting knife contacts the patch fixed end 222, the cutting knife may push the patch fixed end 222 to make the patch 200 at least partially bulge, causing the surface of the patch 200 to be uneven, and the cutting path may be distorted. The patch hook 111 covers the edge of the patch 200 to prevent the surface of the patch 200 from wrinkling or deformation due to the upward warping of the patch 200.

[0082] In some embodiments, the end of the anvil plate 100 is provided with a snap-in groove 101. Figure 3-Figure 6 As shown, the end of the nail plate 100 is recessed toward the interior of the nail plate 100 to form a snap-in groove 101, and the snap-in groove 101 is constructed as a wedge-shaped structure for accommodating at least part of the patch 200, wherein at least part of the patch 200 covers the snap-in groove 101.

[0083] Specifically, the mounting hole 201 of the patch 200 is sleeved on the patch hook 111, so that the patch 200 is accurately positioned with the first surface 110 of the anvil plate 100, and when the patch 200 is laid flat on the first surface 110, at least part of the patch free end 221 extends toward the end of the anvil plate 100 and can cover the clamping groove 101. That is, the distance from the patch free end 221 to the patch hook 111 is greater than the distance from the anvil groove 103 to the patch hook 111.

[0084] In some embodiments, Figure 4 As shown, the anvil plate 100 further includes an anvil plate wing 124 , and the anvil plate wing 124 is connected to the anvil plate 100 . Specifically, the anvil plate wing 124 and the anvil plate 100 may be an integrally formed part.

[0085] The free end of the anvil plate wing 124 extends in a direction away from the patch hook 111, and the distance from the free end of the anvil plate wing 124 to the patch hook 111 is greater than the distance from the anvil groove 103 to the patch hook 111. The anvil plate wing 124 is used to establish an internal hollow space for the anvil seat assembly and assist in the tightening and loosening of the anvil end cap 300.

[0086] In some embodiments, a cutting groove 102 is provided through the nail plate 100 . The cutting groove 102 is provided on the central axis of the nail plate 100 in the length direction and extends along the length direction of the nail plate 100 , so as to allow a cutting knife to slide through to cut the patch 200 .

[0087] Further, when the patch 200 is accurately positioned and fitted with the anvil plate 100, the auxiliary knife groove 202 covers the knife groove 102. When the cutting knife cuts the patch 200 along the knife groove 102, the cutting knife just cuts the patch 200 along the auxiliary knife groove 202.

[0088] The present disclosure also includes an anvil assembly, which includes an anvil plate 100 and an anvil end cap 300 .

[0089] In some embodiments, the anvil end cap 300 is releasably disposed at the end of the anvil plate 100 , and is used to engage with the engaging groove 101 at the end of the anvil plate 100 to fix the patch 200 .

[0090] Specifically, Figure 5 As shown, the anvil end cap 300 includes: an end cap base 310 and a clamping member 320 , wherein the clamping member 320 is disposed on the end cap base 310 and extends in a direction of connection with the anvil plate 100 , and is used for being plugged into the clamping groove 101 to fix the patch 200 .

[0091] Furthermore, when the patch 200 is laid flat on the first surface 110, the free end 221 of the patch extends toward the free end of the anvil plate 100 and covers the snap-in groove 101. After the anvil end cap 300 is fastened and installed with the anvil plate 100, the snap-in member 320 snaps into the snap-in groove 101 to clamp the patch 200, thereby further fixing the patch 200 with the anvil plate 100.

[0092] In some embodiments, the anvil end cap 300 further includes a first limiting member 330 , which is disposed on the end cap base 310 and extends in the same direction as the clamping member 320 , and is used to clamp the anvil end cap 300 with the anvil plate 100 .

[0093] The first limiting member 330 includes: a first limiting member end 331 and a first limiting portion 332. The first limiting member end 331 extends toward the direction of connection with the anvil plate 100, and the first limiting portion 332 is connected to the first limiting member 330 and extends toward a direction away from the first limiting member end 331, and is used to be engaged with the anvil plate 100 so that the anvil end cap 300 is connected to the anvil plate 100.

[0094] Furthermore, if Figure 4 As shown, the nail plate 100 also includes a first snap-fit ​​portion 121 arranged on the second surface 120 of the nail plate 100, and the first snap-fit ​​portion 121 is used to snap into the first limiting portion 332 of the first limiting member 330 to connect the nail end cap 300 with the nail plate 100, thereby fixing the patch 200 on the nail plate 100.

[0095] In some embodiments, Figure 5 As shown, the anvil cap 300 is configured as a double-layer structure, and there is a gap between the clamping member 320 and the first limiting member 330. The gap is used to accommodate at least part of the anvil plate wing 124, so that the anvil cap 300 and the anvil plate 100 are accurately installed and firmly connected.

[0096] In some embodiments, the nail end cap 300 also includes an end cap side wing 350, which is arranged on both sides of the clamping member 320 and extends in the direction of the first limiting member 330, and is used to assist the nail end cap 300 to be accurately positioned with the nail plate 100 and connected along the length direction of the nail plate side wing 124.

[0097] Furthermore, the portion where the anvil plate wing 124 contacts the end cap wing 350 is provided with an end cap slot 125, and the end cap slot 125 is engaged with the end cap wing 350. When the anvil end cap 300 is fastened to the anvil plate 100, the end cap wing 350 wraps at least a portion of the anvil plate wing 124, so that the anvil end cap 300 and the anvil plate 100 are accurately positioned.

[0098] In some embodiments, Figure 6 , Figure 7 As shown, the anvil end cap 300 has a loose position for being loosened from the anvil plate 100 , and a fastening position for being fastened to the anvil plate 100 .

[0099] When the anvil end cap 300 is in the loosened position, there is a gap between the clamping piece 320 and the clamping groove 101, and the anvil end cap 300 is loosened from the anvil plate 100. At this time, the first clamping piece 320 is not clamped with the first buckle portion 121, and the patch 200 is not fixed relative to the anvil plate 100.

[0100] When the anvil end cap 300 is in the fastening position, the clamping member 320 is clamped with the clamping groove 101 to clamp the patch 200. At this time, the first limiting member 330 is clamped with the first buckle portion 121, and the anvil end cap 300 is connected to the anvil plate 100.

[0101] In some embodiments, the first limiting member 330 has a first position and a second position. When the anvil end cap 300 is in a loosened position, the first limiting member 330 is located in the first position; when the anvil end cap 300 is in a fastened position, the first limiting member 330 is located in the second position.

[0102] In some embodiments, Figure 5As shown, the first position-limiting portion 332 has a first side 333 and a second side 334. When the first position-limiting member 330 moves from the first position toward the second position, the first side 333 of the first position-limiting portion 332 first contacts the first buckle portion 121. At this time, under the movement trend of the anvil end cap 300, the first side 333 of the first position-limiting portion 332 abuts against the first buckle portion 121. When the first position-limiting member 330 starts to move toward the second position, the first side 333 of the first position-limiting portion 332 is squeezed by the first buckle portion 121 and compressed toward the middle of the first position-limiting member 330.

[0103] In response to the first limiting member 330 moving from the first position toward the second position, the first side 333 of the first limiting portion 332 moves in close contact with the first snap portion 121 until the first limiting member 330 moves to the second position, at which time the first limiting portion 332 snaps into contact with the first snap portion 121, and the second side 334 of the first limiting portion 332 contacts with the first snap portion 121, thereby completing the installation of the nail end cap 300 and the nail plate 100.

[0104] In some embodiments, the anvil plate 100 further includes: a second buckle portion 122 , a third buckle portion 123 and a second limiting member 340 .

[0105] like Figure 6 , Figure 7 As shown, the second snap-in portion 122 and the third snap-in portion 123 are arranged on the second surface 120 of the nail plate 100, and protrude toward the central axis direction of the nail plate 100 relative to the nail plate side wing 124, and the upper surfaces of the second snap-in portion 122 and the third snap-in portion 123 protrude from the second surface 120 of the nail plate 100 to limit the position of the second limiting member 340.

[0106] The second position-limiting member 340 is movably disposed between the second buckle portion 122 and the third buckle portion 123 , and has a third position located between the second buckle portion 122 and the third buckle portion 123 , and a fourth position engaged with the second buckle portion 122 .

[0107] Specifically, the second position-limiting member 340 can be switched from the third position to the fourth position. Furthermore, the second position-limiting member 340 includes a second position-limiting portion 341. Figure 8 , Fig. 9As shown, when the second position-limiting member 340 is in the third position, the second position-limiting member 340 is located between the second buckle portion 122 and the third buckle portion 123, and the second position-limiting member 341 is engaged with the third position-limiting member. When the second position-limiting member 340 is in the fourth position, the second position-limiting member 340 is located outside the second buckle portion 122 and the third buckle portion 123, and at this time, the second position-limiting member 341 is engaged with the second buckle portion 122.

[0108] In some embodiments, the second limiting member 340 can be used to push against the first limiting member 330 to adjust the connection state between the anvil end cap 300 and the anvil plate 100 .

[0109] When the first stopper 330 is in the second position and the second stopper 340 is in the third position, the first stopper 330 abuts against the second stopper 340. In response to the second stopper 340 switching from the third position to the fourth position, the first stopper 330 switches from the second position to the first position, that is, the anvil end cap 300 and the anvil plate 100 switch from a fastened state to a loosened state.

[0110] In some embodiments, when the first limiting member 330 switches from the second position to the first position, the first limiting portion 332 needs to be broken.

[0111] Specifically, the second limiting member 340 pushes the first limiting member 330 so that the first limiting member 330 has a tendency to switch from the second position to the first position. Under the current tendency, when the first limiting member 330 is in the second position, the second side 334 of the first limiting portion 332 abuts against the first buckle portion 121. Further, when the second limiting member 340 continues to push the first limiting member 330, as shown in FIG. Fig.10 As shown, the first limiting portion 332 is broken under the combined action of the pushing force and the stopping pressure of the first buckle portion 121 .

[0112] In other embodiments, when the first limiting member 330 switches from the second position to the first position, the first limiting portion 332 undergoes plastic deformation under the combined effect of the pushing pressure of the second limiting member 340 and the stopping pressure of the first buckle portion 121 .

[0113] It should be noted that the present disclosure does not limit the material of the first limiter 330, and the first limiter 330 can be constructed as a metal part or a plastic part. When the first limiter 330 is a metal part, during the loosening process of the anvil end cap 300, the first limiter 330 may be plastically deformed or broken by the first buckle portion 121; when the first limiter 330 is a plastic part, during the loosening process of the anvil end cap 300, the first limiter 330 will be plastically deformed or broken by the first buckle portion 121.

[0114] In some embodiments, the anvil assembly further includes an anvil back plate 400, such as Fig.11 As shown, the anvil seat back plate 400 is connected to the anvil plate side wing 124 to form a hollow space inside the anvil seat assembly.

[0115] Specifically, the outer end surface formed by the connection between the anvil seat back plate 400 and the anvil plate side wing 124 and facing away from the first surface 110 of the anvil plate 100 is an arc-shaped structure, and a hollow structure is formed between the anvil plate 100 and the anvil seat back plate 400, so that the cutting knife, the first limit member 330 and the second limit member 340 can slide inside the anvil seat assembly to achieve the loosening or tightening action of the anvil end cap 300 and the cutting action of the patch 200.

[0116] In some embodiments, based on the hollow space formed by the anvil seat back plate 400 and the anvil plate 100, the anvil end cap 300 and the anvil plate 100 can be switched between the first position and the second position.

[0117] The present disclosure also includes a stapler staple magazine assembly 2000, including the stapler seat assembly provided in the embodiment of the present disclosure. The stapler staple magazine assembly 2000 using the stapler seat assembly can more conveniently loosen the patch 200, thereby achieving the purpose of quickly tightening or loosening the patch 200. Furthermore, the stapler seat assembly provided by the present disclosure better meets the hygiene requirements for equipment during surgery.

[0118] like Fig.12 As shown, the anvil assembly can be set on the stapler staple magazine assembly 2000 through the stapler staple magazine assembly 1000 of the stapler staple magazine assembly 2000, and the anvil assembly cooperates with other parts on the stapler staple magazine assembly 2000 to achieve tissue cutting and complete the reinforcement and repair of the anastomotic opening.

[0119] Specifically, when the anvil end cap 300 and the anvil plate 100 are in the first position, the mounting hole 201 of the patch 200 can be sleeved on the patch hook 111 on the anvil plate 100 to ensure that the patch 200 and the first surface 110 of the anvil plate 100 fit and cover the anvil groove 103, and the free end 221 of the patch extends in the direction of the clamping groove 101. At this time, the anvil end cap 300 and the anvil plate 100 can be switched from the first position to the second position, at which time the anvil end cap 300 and the anvil plate 100 are fastened and clamp the free end 221 of the patch. At this time, the anvil seat can be connected to the stapler assembly 1000, and the stapler assembly 1000 can be used in conjunction with the stapler assembly 2000 body of the stapler, and can also be used as a replacement stapler for the stapler assembly 2000 during operation.

[0120] During the operation, the stapler cartridge assembly 2000 is clamped at the position of the tissue to be cut (anastomotic position), the stapler cartridge assembly 1000 is in contact with the anvil seat and closed, and the patch 200 is clamped and fixed on the surface of the tissue to be cut. At this time, the stapler cartridge assembly 2000 can be fired to make the cutting knife cut the patch 200 and part of the tissue around the anastomotic opening at the same time. At the same time, the staples inside the stapler cartridge assembly 1000 pass through the tissue and the patch 200, and deform at the anvil groove 103 to complete the closure of the anastomotic opening. At this time, the staples fix the patch 200 at the anastomotic opening by stapling the patch 200.

[0121] Another embodiment of the present disclosure provides a staple cartridge 1100', such as Fig.13 As shown, the end of the staple cartridge 1100' is provided with a snap-in groove for connecting with the patch 200' (200), and the staple cartridge 1100' further includes: anastomosis staple grooves 1101' and a patch hook 111'.

[0122] The staple groove 1101' is disposed on the surface of the staple magazine 1100', and is used to accommodate the staple 1110'. The patch hook 111' is disposed on the same side of the staple magazine 1100' as the staple groove 1101', and is used to connect the patch 200' (200), and the patch 200' (200) covers the staple groove 1101'. The patch 200' (200) is the patch 200' (200) provided in the first aspect of the embodiment of the present disclosure.

[0123] In other embodiments, the patch 200' (200) has a patch free end 221 and a patch fixed end 222', the width of the patch fixed end 222' is slightly narrower than the width of the middle part of the patch 200' (200), and the patch fixed end 222' is provided with a mounting hole 201' to enable the patch 200' (200) to be mounted to the nail magazine 1100'; the width of the patch free end 221' is slightly narrower than the width of the patch fixed end 222', so as to facilitate the connection between the patch free end 221' and the nail magazine 1100', wherein the patch free end 221' is engaged with the engaging groove of the nail magazine 1100'.

[0124] The patch fixed end 222' is provided with a mounting hole 201' for connecting the patch 200' (200) with the patch hook 111'; the patch free end 221' can be engaged with the nail magazine 1100' to ensure a stable connection between the patch 200' (200) and the nail magazine 1100'.

[0125] In some embodiments, the length direction of the mounting hole 201 extends along a direction perpendicular to the central axis of the patch 200, wherein the present disclosure defines the ratio between the length of the mounting hole 201 and the width of the patch 200. The maximum dimension of the mounting hole 201' in the direction perpendicular to the central axis accounts for 20% to 95%, preferably 30% to 75% of the maximum width of the patch 200'.

[0126] In other embodiments, the ratio of the maximum dimension of the mounting hole 201 ' in the direction perpendicular to the central axis to the maximum width of the patch 200 ' is preferably 35%, 40%, 45%, 50%, 55%, 60%, 65% or 70%.

[0127] In some embodiments, a connecting portion 210' is disposed inside the mounting hole 201', and the connecting portion 210' has a first end and a second end connected to the mounting hole 201', and the distance from the first end to the central axis of the patch is equal to the distance from the second end to the central axis of the patch. Thus, the connecting portion 210' is centered in the width direction of the patch 200', and the mounting hole 201' is used to reinforce the mounting hole 201'.

[0128] In some embodiments, the connecting portion 210' divides the mounting hole 201' into a first mounting hole and a second mounting hole, wherein in response to cutting the mounting hole 201' and the connecting portion 210' along the auxiliary knife groove 202', the first mounting hole and the second mounting hole form a first open opening and a second open opening, respectively.

[0129] The connecting portion 210' can improve the accuracy of the connection between the patch 200' and the nail plate 100', and can also prevent the patch 200' from warping due to excessive deformation of the mounting hole 201' caused by pulling or cutting the patch 200'.

[0130] In some embodiments, the extending direction of the connecting portion 210' and the extending direction of the mounting hole 201' have an included angle α, such as Fig.13 , Fig.14 As shown, the extending direction of the mounting hole 201' is perpendicular to the central axis direction of the patch 200', and the value range of the angle α is: 0°<α<90°. Preferably, the value range of α is 20°≤α≤60°.

[0131] In some embodiments, the value range of α is preferably 20°≤α≤45°.

[0132] In other embodiments, the value of α is preferably 25°, 30°, 35° or 40°.

[0133] In some embodiments, a pushing structure 1120' is further disposed inside the staple groove 1101' for pushing the staple 1110'. In response to the pushing structure 1120' pushing the staple 1110' out of the staple groove 1101', the staple 1110' penetrates the patch 200' (200) and the anastomotic opening affixed to the patch 200' (200), and the staple 1110' connects the patch 200' (200) and the anastomotic opening.

[0134] In some embodiments, the patch hook 111' includes a hook fixed end and a hook free end, the hook fixed end is fixedly connected to the staple plate, and the hook free end extends in a direction away from the staple groove 1101', wherein there is a gap between the hook free end and the surface of the staple magazine 1100' for accommodating the patch fixed end 222'.

[0135] In some embodiments, the edge of the patch hook 111' extends toward the edge of the patch 200' (200) and covers at least a portion of the patch fixing end 222', that is, the projection of the free end of the patch hook on the surface of the nail magazine 1100' can cover the patch fixing end 222'.

[0136] When the patch 200'(200) is installed on the surface of the nail magazine 1100', the patch fixing end 222' may be tilted upward due to the tension of the patch 200'(200). The patch hook 111' can cover the edge of the patch 200'(200) to prevent the surface of the patch 200'(200) from wrinkling or deformation due to the tilting of the patch fixing end 222'.

[0137] When cutting the patch 200'(200), since the cutting knife cuts from the patch fixed end 222' to the patch free end 221', when the cutting knife contacts the patch fixed end 222', the cutting knife may push the patch fixed end 222' to make the patch 200'(200) at least partially bulge, causing the surface of the patch 200'(200) to be uneven, and the cutting path may be distorted. The patch hook 111' can cover the edge of the patch 200'(200), so as to prevent the surface of the patch 200'(200) from being wrinkled or deformed due to the upward warping of the patch 200'(200).

[0138] In some embodiments, the present disclosure also provides a staple cartridge assembly 1000 ′, comprising a staple cartridge 1100 ′ and a staple cartridge end cap 1130 ′.

[0139] The staple cartridge end cap 1130' is used to engage with the end of the staple cartridge 1100', so that the staple cartridge end cap 1130' and the staple cartridge 1100' clamp the patch free end 221', so that the patch 200' (200) is stably connected to the staple cartridge 1100'.

[0140] In actual application, firstly, the mounting hole 201' of the patch 200'(200) is correspondingly sleeved on the free end of the patch hook 111', so that the patch 200'(200) covers the staple groove 1101'. Further, the staple magazine end cap 1130' is clamped with the end of the staple magazine 1100', so that the patch free end 221' is clamped, and the patch 200'(200) and the staple magazine 1100' are installed. At this time, the patch hook 111' can cover the patch fixed end 222', which can prevent the patch 200'(200) from wrinkling or deforming due to the patch 200'(200) warping up during the installation process or cutting process of the patch 200'(200).

[0141] In some embodiments, the staple cartridge assembly 1000' further comprises a staple cartridge back plate 400' and a cutting knife 1140', wherein the staple cartridge back plate 400' is connected to the staple cartridge 1100', so that the cutting knife 1140' and the abutting structure 1120' can move inside the staple cartridge assembly 1000', thereby realizing the cutting action of the cutting patch 200'(200) and the loosening or tightening action of the abutting end cap 300. An elastic member is disposed between the staple cartridge end cap 1130' and the staple cartridge 1100', so that the staple cartridge end cap 1130' and the staple cartridge 1100' can be loosened or tightened.

[0142] It should be further explained that the patch disclosed in the present invention can be made of polymer materials or animal-derived materials. The polymer material can be polylactic acid, polyethylene glycol acid, polyglycolic acid, copolymers of glycolic acid and lactic acid, copolymers of lactic acid and caprolactone, copolymers of glycolic acid and caprolactone, polycaprolactone, polydioxanone or mixtures thereof. The animal-derived material can be tissue capsule and / or endothelium. The pericardium, peritoneum or submucosa can be selected. Preferably, the submucosa of the small intestine, the submucosa of the bladder, amniotic membrane or a combination thereof can be selected. Preferably, the above-mentioned polymer materials and animal-derived materials are completely degradable materials or at least partially degradable materials after implantation in the body.

[0143] It should be further explained that the anvil plate 100 and the stapler 1100' described in the present disclosure are components of the stapler stapler assembly 2000. The anvil plate 100 and / or the stapler 1100' together with other parts of the stapler stapler assembly 2000 constitute the stapler stapler assembly 2000. The stapler stapler assembly 2000 may have a pre-set patch or may not have a pre-set patch.

[0144] The specific structure, working principle, and beneficial effects of the patch, anvil assembly, and stapler magazine assembly provided in the embodiments of the present disclosure can be referred to the patch, anvil assembly, and stapler magazine assembly described in any of the above embodiments, and will not be elaborated here.

[0145] 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 or similar parts between the various embodiments can be referred 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.

[0146] 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 patch, characterized in that: The structure is a long strip structure, including: A mounting hole extending in the width direction of the patch and penetrating through one end of the patch, used to connect the anvil plate of the anvil seat or the nail magazine of the nail magazine assembly; the mounting hole includes a connecting portion, which is arranged in the mounting hole and used to reinforce the mounting hole so that the patch is stably connected to the anvil plate or the nail magazine; The auxiliary knife groove extends along the length direction of the patch, and the auxiliary knife groove is constructed as a plurality of intermittently arranged hollow spaces, and the straight line where the auxiliary knife groove is located is the central axis of the patch, Wherein, the connecting portion divides the mounting hole into a first mounting hole and a second mounting hole, and in response to cutting the connecting portion along the auxiliary knife groove, the first mounting hole and the second mounting hole respectively form a first open opening and a second open opening, so as to facilitate the patch to be separated from the nail plate or the nail magazine; the extension direction of the connecting portion has a preset angle α with the perpendicular direction of the central axis of the patch.

2. The patch according to claim 1, characterized in that: The value range of the angle α is: 0°<α<90°.

3. The patch according to claim 2, characterized in that: The value range of the angle α is: 20°≤α≤60°.

4. The patch according to claim 2, characterized in that: The value range of the angle α is: 20°≤α≤45°.

5. The patch according to claim 2, characterized in that: The value of the angle α is 25°, or 30°, or 35°, or 40°.

6. The patch according to claim 1, characterized in that: The maximum dimension of the mounting hole in the direction perpendicular to the central axis accounts for 20% to 95% of the maximum width of the patch in this direction.

7. The patch according to claim 1, characterized in that: The maximum dimension of the mounting hole in the direction perpendicular to the central axis accounts for 30% to 75% of the maximum width of the patch in this direction.

8. The patch according to claim 1, characterized in that: The maximum dimension of the mounting hole in the direction perpendicular to the central axis accounts for 35%, or 40%, or 45%, or 50%, or 55%, or 60%, or 65%, or 70% of the maximum width of the patch in this direction.

9. The patch according to claim 1, characterized in that: The connecting portion has a first end and a second end connected to the mounting hole in a width direction, and a distance from the first end to the central axis of the patch is equal to a distance from the second end to the central axis.

10. The patch according to claim 1, characterized in that: One end of the patch is a patch fixed end, and the other end is a patch free end. The patch free end is used to be clamped with the nail plate or the nail magazine to ensure that the patch is stably connected to the nail plate or the nail magazine.

11. An anvil assembly, characterized in that: include: The patch according to any one of claims 1 to 10; Anvil plate, comprising: An anvil groove is provided on the surface of the anvil plate and is used to squeeze and deform the anastomotic staples; A cutting groove is provided through the nail support plate and is used to limit a cutting path for cutting the patch; A patch hook is provided on the same side of the anvil plate as the anvil groove and is used to connect the patch. Wherein, the patch covers the pin-stop groove, and the auxiliary knife groove of the patch covers the knife-feeding groove.

12. The anvil assembly according to claim 11, characterized in that: The patch hook comprises: A hook fixing end fixedly connected to the nail support plate; The free end of the hook extends in a direction away from the abutment groove; There is a gap between the free end of the hook and the surface of the nail plate, which is used to accommodate the patch fixing end of the patch.

13. The anvil assembly according to claim 12, characterized in that: The projection of the free end of the hook on the anvil plate can cover the fixed end of the patch.

14. The anvil assembly according to claim 11, characterized in that: Also includes: A clamping groove is arranged at one end of the nail support plate away from the patch hook and is used for clamping the free end of the patch.

15. A stapler cartridge assembly, characterized in that: include: The anvil assembly according to any one of claims 11 to 14; Nail cartridge, including: Anastomotic staple grooves are provided on the surface of the staple cartridge and are used to accommodate anastomotic staples; A patch hook is arranged on the same side of the staple cartridge as the staple groove and is used to connect the patch. Wherein, the patch is the patch according to any one of claims 1 to 10; the patch is connected to the patch hook and covers the staple groove.

16. The stapler cartridge assembly according to claim 15, characterized in that: The patch hook comprises: A hook fixing end, fixedly connected to the nail magazine; The free end of the hook extends in a direction away from the staple groove; There is a gap between the free end of the hook and the surface of the nail magazine, which is used to accommodate the patch fixing end of the patch.

17. The stapler cartridge assembly according to claim 16, characterized in that: The projection of the free end of the patch hook on the surface of the nail magazine can cover the fixed end of the patch.

18. The stapler cartridge assembly according to claim 15, characterized in that: Also includes: A clamping groove is arranged at an end of the nail magazine away from the patch hook and is used to clamp the free end of the patch.

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