Anvil assembly, staple assembly and stapler

Abstract

The present disclosure provides a dowel seat assembly, a stapler assembly and a stapler. The dowel seat assembly includes: a dowel plate, a patch, a dowel end cap and a slider assembly. The dowel plate has a first surface and a second surface that are opposite to each other in the thickness direction, and a first limiting groove and a through hole are provided at the end of the dowel plate; the patch is provided on the first surface of the dowel plate, and at least part of the patch covers the first limiting groove; the dowel end cap is slidably provided at the end of the dowel plate, and is used to engage with the first limiting groove at the end of the dowel plate to fix the patch, and at least part of the dowel end cap is penetrated by the through hole; the slider assembly is provided on the second surface of the dowel plate and connected to the dowel end cap, and moves synchronously with the dowel end cap, at least part of the patch is provided between the dowel plate and the slider assembly, and the dowel end cap is used to drive the slider assembly to slide to compress or release the patch.

Description

Technical Field

[0001] The present disclosure relates to the technical field of staplers, and in particular to an anvil assembly, a stapler assembly and a stapler. 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 stapler assembly, a stapler assembly and a stapler to solve the technical problems in the related art. The specific scheme is as follows:

[0005] A first aspect of an embodiment of the present disclosure provides a nail seat assembly, comprising: a nail plate, which has a first surface and a second surface that are opposite to each other in the thickness direction, and a first limiting groove and a connecting structure are provided at the end of the nail plate; a patch, which is arranged on the first surface of the nail plate, and at least part of the patch covers the first limiting groove; a nail end cap, which at least partly penetrates the through hole and is slidably connected to the connecting structure, and is used to engage with the first limiting groove at the end of the nail plate to fix the patch; and a slider assembly, which is arranged on the second surface of the nail plate, is connected to the nail end cap, and moves synchronously with the nail end cap, wherein at least part of the patch is arranged between the nail plate and the slider assembly, and the nail end cap is used to drive the slider assembly to slide to compress or release the patch.

[0006] In some embodiments, the connection structure is a through hole, and at least a portion of the anvil end cap passes through the through hole and is slidably connected to the through hole.

[0007] In some embodiments, the anvil end cap includes: an end cap base; a first limiting member, which is arranged on the end cap base and extends toward the anvil plate, and is used to be plugged into the first limiting groove to fix the patch; a second limiting member, which is arranged in pairs on the end cap base and is used to be slidably connected to the side wall of the through hole; and a third limiting member, which is arranged on the end cap base, and the free end of the third limiting member passes through the through hole and is connected to the slider assembly, wherein the third limiting member is used to drive the slider assembly to slide.

[0008] In some embodiments, the slider assembly includes: a slider, which is arranged on the second surface of the nail plate and connected to the third limiting member; a pressure strip, which is arranged on the side of the slider away from the patch, and the free end of the pressure strip is provided with a protruding key for pressing or releasing the patch.

[0009] In some embodiments, the anvil end cap has a first position and a second position: in response to the anvil end cap being in the first position, there is a gap between the first limiting member and the first limiting groove, and the anvil end cap is separated from the anvil plate; in response to the anvil end cap being in the second position, the first limiting member is engaged with the first limiting groove, and the anvil end cap is connected to the anvil plate.

[0010] In some embodiments, the slider assembly has a third position and a fourth position: in response to the slider assembly being in the third position, the slider assembly is separated from the patch; in response to the slider assembly being in the fourth position, the slider assembly is engaged with the patch.

[0011] In some embodiments, in response to the first limiting member switching from the first position to the second position, the slider assembly switches from the third position to the fourth position.

[0012] In some embodiments, the anvil end cap also includes: an end cap side wing, which is arranged on the edge of the end cap base, for assisting the accurate positioning of the anvil end cap when connected to the anvil plate, and a second limiting groove is arranged on the side where the end cap side wing is connected to the anvil plate.

[0013] In some embodiments, the nail plate further includes: a nail plate side wing, which is arranged on the second surface of the nail plate and is integrally formed with the nail plate, wherein a key groove matching the raised key is arranged on the nail plate side wing.

[0014] In some embodiments, the patch includes: an extension portion extending in a width direction of the patch and covering the keyway.

[0015] In some embodiments, the anvil assembly further includes: a patch hook, disposed on the first surface of the anvil plate, for assembling the patch.

[0016] In some embodiments, the anvil assembly further includes: a back plate, wherein the back plate is connected to the side wings of the anvil plate and is used to form a hollow space inside the anvil assembly.

[0017] The second aspect of the embodiment of the present disclosure provides a stapler assembly for a stapler, including: the stapler assembly provided by the first aspect of the embodiment of the present disclosure. The third aspect of the embodiment of the present disclosure provides a stapler, including: the stapler assembly provided by the second aspect of the embodiment of the present disclosure. Compared with the related art, the above-mentioned solution of the embodiment of the present disclosure has at least the following beneficial effects:

[0018] The anvil seat assembly, stapler assembly and stapler provided by the present invention have a slidable anvil end cap and a slider assembly that moves synchronously with the anvil end cap. The relative sliding of the anvil end cap and the anvil plate is used to tighten or release the patch, so as to achieve the purpose of effectively installing or removing the patch. The structure is simple, the operation is convenient and it better meets the hygiene requirements of the equipment during the operation.

[0019] 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

[0020] 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:

[0021] Figure 1 It is a schematic structural diagram showing a nail end cap in a first position according to an exemplary embodiment.

[0022] Figure 2 is a side view of a nail end cap in a second position according to an exemplary embodiment.

[0023] Figure 3 is a schematic structural diagram of a first surface of a nail plate according to an exemplary embodiment

[0024] Figure 4 is a schematic structural diagram of the second surface of a nail plate according to an exemplary embodiment

[0025] Figure 5 It is a schematic structural diagram of a dowel seat assembly according to an exemplary embodiment.

[0026] Figure 6It is a partially enlarged view showing a nail end cap in a first position according to an exemplary embodiment.

[0027] Figure 7 It is a schematic structural diagram of a nail end cap according to an exemplary embodiment.

[0028] Figure 8 It is a partially enlarged view showing a nail end cap in a second position according to an exemplary embodiment.

[0029] Fig. 9 It is a schematic diagram of the back structure of a dowel seat assembly according to an exemplary embodiment.

[0030] Fig.10 The figure is a schematic structural diagram of a staple assembly according to an exemplary embodiment.

[0031] Fig.11 1 is a schematic diagram of the structure of a stapler according to an exemplary embodiment.

[0032] The anvil plate 100, the first limiting groove 101, the cutting groove 102, the anvil groove 103, the through hole 104, the first surface 110, the patch hook 111, the second surface 120, the anvil plate side wing 121, the key groove 122, and the protrusion 123;

[0033] Patch 200, mounting hole 201, auxiliary knife groove 202, traction part 210, extension part 220;

[0034] The anvil end cap 300, the second limiting groove 301, the end cap base 310, the first limiting member 311, the second limiting member 312, the third limiting member 313, and the edge portion 320;

[0035] Slider assembly 400, slider 410, connecting portion 411, pressure strip 420, raised key 421;

[0036] Back plate 500, connection hole 501;

[0037] Staple magazine assembly 1000 and stapler 2000. DETAILED DESCRIPTION

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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, there will be problems 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 use.

[0047] In view of this, optional embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0048] A first aspect of an embodiment of the present disclosure provides an anvil assembly, comprising: an anvil plate 100 , a patch 200 , an anvil end cap 300 , and a slider assembly 400 .

[0049] like Figure 1 , Figure 2 As shown, a connection structure is provided through the thickness direction of the anvil plate 100 , and the connection structure may be a through hole 104 for installing the anvil end cap 300 . The anvil end cap 300 at least partially passes through the through hole 104 and is slidably connected to the through hole 104 .

[0050] The anvil end cap 300 can slide in the length direction of the anvil plate 100 to drive the slider assembly 400 to slide, thereby controlling the anvil end cap 300 and the slider assembly to clamp the patch 200 .

[0051] Specifically, Figure 3 , Figure 4 As shown, the anvil plate 100 has a first surface 110 and a second surface 120 that 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 patch 200 covers the anvil grooves 103. The plurality of anvil grooves 103 are used to squeeze and deform the staples. During the surgical operation, the stapler is clamped at the cutting position of the tissue to be cut. The stapler is fired, and the cutting knife of the stapler cuts the tissue. At the same time, the stapler passes through the tissue and the patch 200, and is deformed at the anvil groove 103, completing the closure of the anastomotic opening. At this time, the stapler fixes the patch 200 at the anastomotic opening by stapling the patch 200. At the same time, the cutting device of the stapler assembly completes the cutting of the tissue.

[0052] In some embodiments, a patch hook 111 is further provided on the first surface 110, and the patch hook 111 is used to ensure accurate positioning of the patch 200 and the first surface 110 of the anvil plate 100 when they are installed, so that the patch 200 can be accurately installed on the anvil plate 100. Figure 1 As shown, the patch 200 can be sleeved on the two patch hooks 111 to cover the first surface 110 , so that the patch 200 can be accurately positioned and installed on the first surface 110 of the nail plate 100 .

[0053] 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.

[0054] In some embodiments, Figure 5 As shown, the patch 200 is arranged on the first surface 110 of the anvil plate 100, and is constructed as a long strip structure, having a fixed end and a free end. The patch 200 is provided with a mounting hole 201 at a position adjacent to the fixed end, and the mounting hole 201 is suitable for passing the patch hook 111, so that the patch 200 can be accurately mounted on the anvil plate 100 to prevent the patch 200 from being offset.

[0055] Furthermore, a traction portion 210 is provided inside the mounting hole 201, and the traction portion 210 is used to reinforce the mounting hole 201. On the one hand, it can improve the stability of the connection between the patch 200 and the patch hook 111, 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 damage to the patch 200.

[0056] In some embodiments, the end of the nail plate 100 is provided with a first limiting groove 101. Figure 6As shown, the end of the nail plate 100 is recessed toward the interior of the nail plate 100 to form a first limiting groove 101, and the first limiting 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 first limiting groove 101.

[0057] Specifically, when installing the plate patch 200, it is necessary to first sleeve the mounting hole 201 of the patch 200 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 free end of the patch 200 extends toward the end direction of the anvil plate 100 and covers the first limiting groove 101. That is, the distance from the free end of the patch 200 to the patch hook 111 is greater than the distance from the anvil groove 103 to the patch hook 111.

[0058] In some embodiments, the patch 200 also includes an extension portion 220, which extends toward the second surface 120 of the nail plate 100 in the width direction of the patch 200. Further, the extension portion 220 is fixed to the second surface 120 of the nail plate 100 to prevent the patch 200 and the nail plate 100 from being displaced.

[0059] In some embodiments, Figure 4 As shown, the anvil plate 100 further includes an anvil plate side wing 121 , and the anvil plate side wing 121 is connected to the anvil plate 100 . Specifically, the anvil plate side wing 121 and the anvil plate 100 may be an integrally formed part.

[0060] The free end of the anvil plate wing 121 extends in a direction away from the patch hook 111, and the distance from the free end of the anvil plate wing 121 to the patch hook 111 is greater than the distance from the anvil groove 103 to the patch hook 111. The anvil plate wing 121 is used to establish an internal hollow space for the anvil seat assembly and assist the anvil end cap 300 in driving the slider assembly 400 to slide.

[0061] A key slot 122 is provided on the side of the anvil plate wing 121 away from the first surface 110, and a plurality of key slots 122 may be provided. Figure 4 As shown, a plurality of key slots 122 are arranged on the side wings 121 of the anvil plate, and the extension portion 220 of the patch 200 can cover the key slots 122 .

[0062] 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 and extends along the length direction of the nail plate 100 , and is used for the cutting knife to slide to cut the patch 200 .

[0063] Furthermore, the patch 200 may be provided with an auxiliary knife groove 202, and the auxiliary knife groove 202 may be constructed as a plurality of intermittently arranged hollow spaces, such as Figure 5 As shown, 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. The hollow space of the auxiliary knife groove 202 can be rectangular, diamond, circular, elliptical or a combination thereof.

[0064] In some embodiments, the anvil end cap 300 can be slidably disposed at the end of the anvil plate 100 , and is used to engage with the first limiting groove 101 at the end of the anvil plate 100 to fix the patch 200 .

[0065] Specifically, Figure 7 As shown, the anvil end cap 300 includes: an end cap base 310 , a first limiting member 311 , a second limiting member 312 , and a third limiting member 313 .

[0066] The first limiting member 311 is disposed on the end cap base 310 and extends toward the direction of connection with the anvil plate 100 , and is used for being plugged into the first limiting groove 101 to fix the patch 200 .

[0067] Further, when the patch 200 is laid flat on the first surface 110, the free end of the patch 200 extends toward the free end of the anvil plate 100 and covers the first limiting groove 101. After the anvil end cap 300 is installed with the anvil plate 100, the first limiting member 311 is engaged with the first limiting groove 101 to clamp the patch 200, and further, the patch 200 is fixed to the anvil plate 100.

[0068] In some embodiments, it is necessary to allow at least a portion of the anvil end cap 300 to pass through the through hole 104 so that the anvil end cap 300 is slidably connected to the through hole 104 .

[0069] Specifically, the second stopper 312 is provided in pairs on the end cap base 310, and the end of the second stopper 312 protrudes, and is used to clamp the side wall of the through hole 104, and slide along the through hole 104. The length of the through hole 104 limits the movement range of the second stopper 312. The third stopper 313 is provided on the end cap base 310, and extends in the same direction as the first stopper 311. As the anvil end cap 300 slides, the free end of the third stopper 313 penetrates the through hole 104 and is connected to the slider assembly 400, and is used to drive the slider assembly 400 to slide.

[0070] The slider assembly 400 includes a slider 410 and a pressure strip 420. The slider 410 has a connecting portion 411 disposed on the second surface 120 of the anvil plate 100, and the connecting portion 411 is connected to the third position-limiting member 313 and can move synchronously with the third position-limiting member 313 under the push of the third position-limiting member 313.

[0071] The pressure strip 420 is arranged on a side of the slider 410 away from the patch 200, and a protruding key 421 is provided at the free end of the pressure strip 420 for engaging with the key slot 122 to press the patch 200. When the protruding key is separated from the key slot 122, the pressure strip 420 releases the patch 200.

[0072] In some embodiments, the anvil end cap 300 further includes an edge portion 320 , and the edge portion 320 is disposed on the end cap base 310 , for assisting the anvil end cap 300 to be accurately positioned with the anvil plate 100 and connected along the length direction of the anvil plate side wing 121 .

[0073] Furthermore, a second limiting groove 301 is provided at the portion where the edge portion 320 contacts the side wing 121 of the nail plate, for assisting the nail end cap 300 to be engaged with the side wing 121 of the nail plate so as to clamp the patch 200, wherein a protrusion 123 engaged with the second limiting groove 301 is provided at the portion where the side wing 121 of the nail plate is connected to the nail end cap 300.

[0074] When the nail end cap 300 is installed on the nail plate 100, the edge portion 320 wraps at least a portion of the nail plate side wing 121, and the second limiting groove 301 is engaged with the protrusion 123 of the nail plate side wing 121 to accurately position the nail end cap 300 and the nail plate 100.

[0075] In some embodiments, Figure 1 , Figure 2 As shown, the anvil end cap 300 has a first position separated from the anvil plate 100 and a second position connected to the anvil plate 100 .

[0076] In response to the nail end cap 300 being in the first position, the nail end cap 300 is separated from the nail plate 100, a gap exists between the first limiting member 311 and the first limiting groove 101, the second limiting groove 301 is separated from the protrusion 123 of the nail plate side wing 121, and the patch 200 is not fixed to the nail plate 100.

[0077] In response to the nail end cap 300 being in the second position, the nail end cap 300 is connected to the nail plate 100, the first limiting member 311 is engaged with the first limiting groove 101, the second limiting groove 301 is engaged with the protrusion 123 of the nail plate side wing 121, and the free end of the patch 200 is fixed to the nail plate 100.

[0078] In some embodiments, the slider assembly 400 has a third position and a fourth position. In response to the slider assembly 400 being in the third position, the extension 220 of the patch 200 may be separated from the key slot 122 , and the slider assembly 400 is separated from the patch 200 .

[0079] In response to the slider assembly 400 being in the fourth position, the extension portion 220 of the patch 200 is clamped between the protruding key 421 and the key slot 122 , and the slider assembly 400 and the anvil plate 100 clamp the patch 200 .

[0080] In some embodiments, in response to the anvil end cap 300 being switched from the first position to the second position, the slider assembly 400 is switched from the third position to the fourth position.

[0081] Specifically, Figure 1 , Figure 8 As shown, when the anvil end cap 300 is in the first position, the slider assembly 400 is in the third position. Since the third stopper 313 of the anvil end cap 300 is fixedly connected to the slider 410 of the slider assembly 400, the slider 410 can move synchronously with the third stopper 313 under the drive of the third stopper 313. Therefore, when the anvil end cap 300 is switched from the first position to the second position, the slider assembly 400 is switched from the third position to the fourth position.

[0082] When the anvil end cap 300 is in the second position and the slider assembly 400 is in the fourth position, Figure 2 , Figure 6As shown, the first stopper 311 is engaged with the first stopper groove 101 to clamp the free end of the patch 200, and the raised key 421 of the pressure strip 420 is engaged with the keyway 122 of the side wing 121 of the nail plate to clamp the extension 220 of the patch 200. At this time, the patch 200 is fixed on the nail plate 100. The cutting knife can be fired to cut the patch 200 along the knife groove 102 and the auxiliary knife groove 202.

[0083] In some embodiments, the anvil assembly further includes a back plate 500. Fig. 9 As shown, the back plate 500 is connected to the anvil plate side wing 121 to form a hollow space inside the anvil seat assembly.

[0084] Specifically, the outer end surface of the back plate 500 that is formed after the connection with the side wing 121 of the nail plate and is away from the first surface 110 of the nail plate 100 is an arc structure, and a hollow structure is formed between the nail plate 100 and the back plate 500, so that the cutting knife, the second limit member 312, the third limit member 313 and the slider assembly 400 can slide inside the nail seat assembly, and the nail end cap 300 drives the slider assembly 400 to slide to complete the fixing and release of the extension portion 220 of the patch 200, thereby realizing the fixing and release of the patch 200 before and after the cutting action.

[0085] In some embodiments, a connection hole 501 is provided through the back plate 500, and the slider 410 in the slider assembly 400 is arranged between the back plate 500 and the nail plate 100, and is at least partially exposed at the connection hole 501, and the middle part of the pressure strip 420 is fixedly connected to the exposed part of the slider 410, and further, the raised keys 421 on both sides of the pressure strip 420 are clamped with the key slots 122 of the side wings 121 of the nail plate to clamp the extension portion 220 of the patch 200.

[0086] A second aspect of the embodiment of the present disclosure provides a staple assembly, comprising the anvil assembly and the staple cartridge assembly 1000 provided in the first aspect of the embodiment of the present disclosure. Fig.10 As shown, the stapler assembly includes a stapler seat assembly and a staple magazine assembly 1000. The stapler seat assembly 1000 is used to provide staples. The stapler seat assembly 1000 and the stapler seat assembly are clamped and fixed together on the surface of the cut tissue (anastomosis). At this time, the staples in the stapler seat assembly 1000 can be fired. The fired staples pass through the tissue and the patch 200 and are deformed at the stapler seat groove 103, thereby completing the closure of the anastomosis.

[0087] The third aspect of the embodiment of the present disclosure provides a stapler, including the stapler assembly provided by the second aspect of the embodiment of the present disclosure. The stapler using the stapler assembly can utilize a staple holder assembly to more conveniently install or release the patch 200, thereby achieving the purpose of quickly installing or releasing the patch 200.

[0088] Furthermore, compared with the related art, the anvil seat assembly, stapler assembly and stapler provided by the present invention have a slidable anvil end cap 300 and a slider assembly 400 that moves synchronously with the anvil end cap 300. The patch 200 is compressed or released by the relative sliding of the anvil end cap 300 and the anvil plate 100, so as to achieve the purpose of quickly installing or removing the patch 200. It has a simple structure, is easy to operate, and is more in line with the hygiene requirements of equipment during surgery.

[0089] Specifically, Fig.11 As shown, the anvil assembly can be set on the stapler 2000 through the stapler magazine assembly 1000 of the stapler 2000. The anvil assembly cooperates with other components on the stapler 2000 to achieve tissue cutting and complete the reinforcement and repair of the anastomotic opening.

[0090] 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 of the patch extends in the direction of the through hole 104. 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 to clamp the free end of the patch. The anvil seat assembly cooperates with the stapler assembly 1000 to form a staple assembly. The stapler assembly 1000 can be used in conjunction with the main body of the stapler 2000, and can also be used as a replaceable stapler for the stapler 2000 during operation.

[0091] During the operation, the stapler 2000 is clamped at the position of the tissue to be cut, and the patch 200 is clamped and fixed on the surface of the tissue with cutting. At this time, the stapler 2000 can be fired, so that the cutting knife cuts the patch 200 and the tissue at the same time. 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 completes the cutting of the tissue.

[0092] 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.

[0093] The specific structure, working principle, and beneficial effects of the anvil assembly, staple assembly, and stapler provided in the embodiments of the present disclosure may refer to the anvil assembly, staple assembly, and stapler described in any of the above embodiments, and will not be elaborated here.

[0094] 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.

[0095] 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 nail support assembly, characterized in that: include: A nail anvil plate, wherein the nail anvil plate has a first surface and a second surface which are opposite to each other in the thickness direction, and a first limiting groove and a connecting structure are provided at the end of the nail anvil plate; A patch, disposed on the first surface of the anvil plate, and at least a portion of the patch covers the first limiting groove; An anvil end cap is slidably connected to the connection structure and is used to engage with the first limiting groove at the end of the anvil plate to fix the patch; as well as A slider assembly is disposed on the second surface of the anvil plate, connected to the anvil end cap, and moves synchronously with the anvil end cap. Wherein, at least part of the patch is arranged between the anvil plate and the slider assembly; the slider assembly comprises: a slider, arranged on the second surface of the anvil plate, connected to a part of the anvil end cap; a pressure strip, arranged on the side of the slider away from the patch, and a protruding key is arranged at the free end of the pressure strip for pressing or releasing the patch; the connecting structure is a through hole, at least part of the anvil end cap passes through the through hole, and is slidably connected to the through hole; the anvil end cap comprises: End cap substrate; A first limiting member, disposed on the end cap base and extending toward the direction of the anvil plate, for plugging into the first limiting groove to fix the patch; Second limiting members, arranged in pairs on the end cap base, for sliding connection with the side wall of the through hole; and The third limiting member is arranged on the end cap base, and the free end of the third limiting member passes through the through hole and is connected with the slider assembly; the third limiting member is used to drive the slider assembly to slide.

2. The anvil assembly according to claim 1, characterized in that: The slider assembly comprises: A sliding block, disposed on the second surface of the nail support plate and connected to the third limiting member; A pressure strip is arranged on a side of the slider away from the patch, and a protruding key is arranged at a free end of the pressure strip for pressing or releasing the patch.

3. The anvil assembly according to claim 1, characterized in that: The anvil end cap has a first position and a second position: In response to the anvil end cap being in the first position, there is a gap between the first limiting member and the first limiting groove, and the anvil end cap is separated from the anvil plate; In response to the anvil end cap being in the second position, the first limiting member is engaged with the first limiting groove, and the anvil end cap is connected to the anvil plate.

4. The anvil assembly according to claim 3, characterized in that The slider assembly has a third position and a fourth position: In response to the slider assembly being in the third position, the slider assembly is separated from the patch; In response to the slider assembly being in the fourth position, the slider assembly is engaged with the patch.

5. The anvil assembly according to claim 4, characterized in that: In response to the first limiting member switching from the first position to the second position, the slider assembly switches from the third position to the fourth position.

6. The anvil assembly according to claim 1, characterized in that: The anvil end cap also includes: The end cap side wing is arranged on the edge of the end cap base to assist in accurate positioning of the anvil end cap when connected to the anvil plate. A second limiting groove is arranged on the side where the end cap side wing is connected to the anvil plate.

7. The anvil assembly according to claim 2, characterized in that: The anvil plate also includes: The side wing of the nail plate is arranged on the second surface of the nail plate and is integrally formed with the nail plate, wherein a key groove matching the raised key is arranged on the side wing of the nail plate.

8. The anvil assembly according to claim 7, characterized in that: The patch comprises: The extension portion extends in the width direction of the patch and covers the key groove.

9. The anvil assembly according to claim 1, characterized in that: Also includes: A patch hook is arranged on the first surface of the nail plate and is used for assembling the patch.

10. The anvil assembly according to claim 1, characterized in that: Also includes: A back plate connected to the side wings of the anvil plate to form a hollow space inside the anvil seat assembly.

11. A stapler assembly for a stapler, characterized in that: include: The dowel assembly as claimed in any one of claims 1 to 10.

12. A stapler, characterized in that: include: The stapler assembly for the stapler according to claim 11.

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