Nail cartridge assembly and stapler

Abstract

The present disclosure provides a stapler assembly and an anastomosis device, the stapler assembly comprising: a stapler base extending in a first direction and configured to accommodate an anastomosis staple assembly; a patch detachably covering the stapler base, wherein in a second direction, the patch is provided with mounting holes in pairs near the edge; a mounting member comprising a mounting member body and a fixing foot, wherein at least a portion of the mounting member passes through the mounting hole and is engaged with the stapler base, and is configured to fix the edge of the patch to the stapler base, wherein a first limiting hole is provided on the surface of the fixing foot, and is configured to be engaged with the stapler base. The stapler assembly and the anastomosis device provided by the present disclosure have a mounting member, so that the edge of the patch can be naturally fixed to the stapler base, effectively avoiding the risk during surgery caused by the edge of the patch being lifted, achieving the purpose of effectively installing the patch, and the overall structure of the stapler assembly is simple and easy to operate, thereby improving the safety and reliability of the anastomosis device.

Description

Technical Field

[0001] The present disclosure relates to the technical field of medical devices, and in particular to 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 and a stapler to solve the technical problems in the related art. The specific solution is as follows:

[0005] A first aspect of the disclosed embodiments provides a staple magazine assembly, characterized in that it comprises: a staple magazine base extending along a first direction and configured to accommodate a staple assembly; a patch detachably covering the staple magazine base, wherein in a second direction, the patch is provided with mounting holes in pairs near an edge thereof; a mounting member comprising a mounting member body and a fixing foot, wherein at least a portion of the mounting member passes through the mounting hole and is snap-fitted to the staple magazine base, and is configured to fix an edge of the patch to the staple magazine base, wherein a first limiting hole is penetrated through a surface of the fixing foot, and is configured to be snap-fitted to the staple magazine base.

[0006] In some embodiments, the mounting member includes: a mounting member body; a fixing foot, which passes through the mounting hole and is configured to be fixedly connected to the nail magazine base, wherein a first limiting hole is provided through the surface of the fixing foot.

[0007] In some embodiments, the nail magazine base also includes: a first limiting member, which is disposed on the inner wall of the nail magazine base and is configured to limit the position of the fixing foot.

[0008] In some embodiments, the first limiting hole matches the shape of the first limiting member, and in response to the fixing foot being installed on the nail magazine base, the first limiting hole is engaged with the first limiting member.

[0009] In some embodiments, the distance between the lower surface of the mounting body and the upper surface of the fixing foot is greater than the thickness of the patch.

[0010] In some embodiments, the height difference between the lower surface of the mounting body and the upper surface of the fixing foot is 0.5-3 mm.

[0011] In some embodiments, the mounting member has a thickness of 0.05-0.2 mm.

[0012] In some embodiments, the first limiting hole and / or the first limiting member is a teardrop-shaped structure.

[0013] In some embodiments, the patch has ears and tail wings, and the ears and tail wings are configured to assist the edge of the patch to fit with the base of the nail magazine.

[0014] In some embodiments, the nail magazine assembly further includes: a nail magazine shell configured to be snap-fitted with the nail magazine base to limit the range of movement of the hanging ear and / or the tail wing.

[0015] In some embodiments, the staple cartridge assembly further comprises: an end buckle, movably connected to the staple cartridge base, configured to clamp the end of the patch,

[0016] The end buckle has an end cap, and a first through hole is provided through the surface of the end cap, which is configured to allow an external component to extend into the end cap to drive the end buckle to move.

[0017] In some embodiments, the end cap has an inclined surface, and in response to the end buckle being installed on the nail magazine base, the inclined surface and the inclined end surface of the nail magazine base are in a different plane.

[0018] In some embodiments, the staple magazine assembly further comprises: a staple pusher slidably connected to the staple magazine base and configured to slide in a first direction to push the staple assembly to move, wherein the staple pusher has a plurality of staple pushing inclined surfaces, and the slopes of the plurality of staple pushing inclined surfaces are the same.

[0019] In some embodiments, the edges of the plurality of push pin inclined surfaces are located at different positions in the first direction.

[0020] The second aspect of the embodiments of the present disclosure provides a stapler, comprising: a stapler body; the stapler assembly provided by the first aspect of the embodiments of the present disclosure, wherein the stapler assembly is detachably connected to the stapler body; and a stapler seat assembly, connected to the stapler assembly and configured to clamp or separate from the stapler assembly under the control of the stapler body.

[0021] In some embodiments, the stapler includes: a cutting knife assembly, in response to the stapler magazine assembly being assembled with the stapler body, the cutting knife assembly abuts against a side of the staple pusher away from the end buckle, and is configured to push the staple pusher to move under the action of an external force.

[0022] Compared with the related art, the above solution of the embodiment of the present disclosure has at least the following beneficial effects:

[0023] The stapler assembly and stapler provided by the present disclosure have a mounting member, at least a portion of which passes through the mounting hole and is clamped with the stapler base, and is configured to fix the edge of the patch to the stapler base. After the patch is installed on the stapler base, the edge of the patch can also be naturally fixed to the stapler base, effectively avoiding the risk during the operation caused by the edge of the patch being lifted, achieving the purpose of effectively installing the patch, and the overall structure of the stapler assembly is simple and easy to operate, and the fixation of the mounting member further improves the safety and reliability of the stapler.

[0024] 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

[0025] 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:

[0026] Figure 1 It is a schematic structural diagram of a nail magazine assembly according to an exemplary embodiment.

[0027] Figure 2 is a side view of an end buckle according to an exemplary embodiment.

[0028] Figure 3 It is a cross-sectional view showing an end buckle installed on a warehouse clearance base according to an exemplary embodiment.

[0029] Figure 4 is a schematic structural diagram of a patch according to an exemplary embodiment.

[0030] Figure 5 It is a partial enlarged view showing a mounting member assembled on a patch according to an exemplary embodiment.

[0031] Figure 6 A partially enlarged view of a mounting member and a staple cartridge base is shown according to an exemplary embodiment.

[0032] Figure 7 It is a schematic structural diagram of a first shell according to an exemplary embodiment.

[0033] Figure 8 It is a schematic structural diagram of a nail magazine base according to an exemplary embodiment.

[0034] Fig. 9 The figure is a schematic structural diagram of a staple assembly according to an exemplary embodiment.

[0035] Fig.10 It is a schematic diagram of the front structure of a support member according to an exemplary embodiment.

[0036] Fig.11 It is a schematic diagram of the reverse structure of a support member according to an exemplary embodiment.

[0037] Fig.12 The present invention is a schematic structural diagram showing a nail pusher installed on a nail magazine base according to an exemplary embodiment.

[0038] Fig.13 The figure is a schematic structural diagram of a nail pusher according to an exemplary embodiment.

[0039] Fig.14 It is a structural schematic diagram showing a nail pusher in a first extreme position according to an exemplary embodiment.

[0040] Fig.15 It is a schematic structural diagram of a stapler according to an exemplary embodiment.

[0041] Reference numerals:

[0042] The nail magazine base 100, the inclined end surface 101, the second through hole 102, the inclined end surface 101, the first limiting member 110, the second limiting member 120, and the third limiting member 130;

[0043] The patch 200, the mounting hole 201, the first limiting hole 202, the mounting member 210, the mounting member body 211, the fixing foot 212, the hanging ear 220, the first hanging ear 221, the second hanging ear 222, and the tail 230;

[0044] End buckle 300, first through hole 301, end cap 310, support seat 320, elastic member 330;

[0045] The nail magazine housing 410, the hook structure 411, the second limiting hole 402, and the third limiting hole 403;

[0046] The stapler assembly 500, the stapler 510, the support member 520, the body 521, the receiving groove 522, the limit block 523, and the stopper 524;

[0047] A nail pusher 600, a nail pusher inclined surface 610, and a column 620;

[0048] The staple cartridge assembly 1000 , the stapler assembly 2000 , and the stapler body 3000 . 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, when the stapler is in use, a patch is mostly used in combination with the stapler. In this way, it is necessary to ensure that the edge of the patch is stably connected to the stapler before firing the stapler, and that the patch and the stapler are effectively separated after firing. 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 anastomotic leakage. Alternatively, if the patch 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.

[0058] In view of this, the present disclosure provides a staple magazine assembly and a stapler, wherein the staple magazine assembly includes: a staple magazine base, extending along a first direction, and configured to accommodate a staple assembly; a patch, wherein mounting holes are arranged in pairs on the edge of the patch; and a mounting member, at least partially passing through the mounting holes and being clamped with the staple magazine base, and configured to fix the edge of the patch to the staple magazine base.

[0059] The stapler assembly and stapler provided by the present disclosure have a mounting member, at least a portion of which passes through the mounting hole and is clamped with the stapler base, and is configured to fix the edge of the patch to the stapler base. After the patch is installed on the stapler base, the edge of the patch can also be naturally fixed to the stapler base, effectively avoiding the risk during the operation caused by the edge of the patch being lifted, achieving the purpose of effectively installing the patch, and the overall structure of the stapler assembly is simple and easy to operate, and the fixation of the mounting member further improves the safety and reliability of the stapler.

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

[0061] A first aspect of the disclosed embodiment provides a staple cartridge assembly 1000, such as Figure 1 As shown, the nail magazine assembly 1000 includes: a nail magazine base 100, a patch 200, an end buckle 300 and a nail magazine shell 410.

[0062] In order to more clearly describe the behavior of the staple cartridge assembly 1000, the following directions are defined based on the staple cartridge assembly 1000: the front-rear axis X, the transverse axis Y, and the central vertical axis Z. The direction opposite to the arrow along the front-rear axis X, i.e., the direction of the normal working backward movement of the staple cartridge assembly 1000, is marked as "forward", and the direction along the arrow direction of the front-rear axis X, i.e., the forward direction of the normal working forward movement of the staple cartridge assembly 1000, is marked as "backward", wherein the direction of the front-rear axis X is the first direction. The transverse axis Y is substantially along the width of the staple cartridge assembly 1000, the direction opposite to the arrow along the transverse axis Y is marked as "right", and the direction along the arrow direction of the transverse axis Y is marked as "left", wherein the direction of the transverse axis Y is the second direction. The vertical axis Z extends along the vertical direction of the mobile device, the direction opposite to the arrow along the straight axis Z is marked as "downward", and the direction along the arrow direction of the straight axis Z is marked as "upward", wherein the direction of the vertical axis Z is the third direction.

[0063] The staple cartridge base 100 may be a long strip structure, extending along the first direction, and configured to support the patch 200. One end of the staple cartridge base 100 is an inclined end surface 101. In practical applications, when the staple cartridge assembly 1000 is sent into the human body under the action of external force, the inclined end surface 101 first approaches the anastomotic opening. The interior of the staple cartridge base 100 is hollow, and is used to accommodate structural components such as the end buckle 300 and the staple assembly 500. The staple cartridge housing 410 is sleeved on the staple cartridge base 100, and is configured to assist in clamping the patch 200.

[0064] In some embodiments, the end buckle 300 is disposed on the inclined end surface 101 of the nail magazine base 100, and at least partially extends toward the interior of the nail magazine base 100 in a first direction, and is configured to be snap-fitted with the nail magazine base 100 to fix the end of the patch 200, so that the position of the patch 200 is fixed relative to the nail magazine base 100, making it convenient for the anastomotic staples 510 to pass through the patch 200 to suture the anastomosis.

[0065] In some embodiments, Figure 2 As shown, the end buckle 300 includes: an end cap 310, the end cap 310 is arranged at one end of the end buckle 300, and the surface of the end cap 310 has the same slope as the inclined end surface 101 of the nail magazine base 100. In response to the end buckle 300 being installed on the nail magazine base 100, the surface of the end cap 310 and the inclined end surface 101 of the nail magazine base 100 are in different planes, and the surface of the end cap 310 forms a concave structure relative to the end surface 101 of the nail magazine base 100. Such a positional relationship ensures that the end buckle 300 and the base 100 can effectively clamp the patch 200 and avoid unnecessary scratches. In addition, the surface of the end cap 310 and the inclined end surface 101 of the nail magazine base 100 can also be set to be in the same plane, so that the end surface of the nail magazine assembly 1000 is flat.

[0066] In some embodiments, the end clip 300 has a clamping position and a disassembly position. In response to the end clip 300 being in the clamping position, the end clip 300 and the nail magazine base 100 clamp the patch 200; in response to the end clip 300 being in the disassembly position, the end clip 300 detaches from the nail magazine base 100 and releases the patch 200.

[0067] In some embodiments, the surface of the end cap 310 is provided with a first through hole 301, which is configured to move the end buckle 300 under the action of an external component. For example, the external component may be a "J-shaped" hook. When the end buckle 300 is installed on the nail magazine base 100, the end of the external component provided with a hook can be extended from the first through hole 301 to the inside of the end buckle 300. Further, the structural characteristics of the hook are used to pull in the first direction to drive the end cap 310 to move, so that the end buckle 300 moves relative to the nail magazine base 100 under the drive of the end cap 310. Further, the clamping connection between the end buckle 300 and the nail magazine base 100 is released to release the patch 200.

[0068] In some embodiments, Figure 3As shown, the end buckle 300 further includes a support seat 320, which is disposed on the outer side of the end buckle 300 away from the end cap 310 and extends toward the direction where the end cap 310 is located, and an elastic member 330 is disposed between the support seat 320 and the nail magazine base 100. Specifically, the elastic member 330 is sleeved on the support seat 320, and the two ends of the elastic member 330 are respectively abutted against the inner wall of the support seat 320 and the nail magazine base 100, and the elastic member 330 has a force to move the end buckle 300 toward the patch 200, and can drive the end buckle 300 to approach the patch 200. In response to the end cap 310 approaching or moving away from the patch 200, the spring expands or compresses.

[0069] In some embodiments, the patch 200 is a special-shaped patch 200, such as Figure 4 As shown, the patch 200 has a hanging ear 220 and a tail wing 230, which are configured to assist the patch 200 in being fixed to the staple cartridge base 100. At least a portion of the hanging ear 220 is bent downward to fit the outer side wall of the staple cartridge base 100, and is configured to be fixed to the staple cartridge base 100 under the action of an external force. The patch 200 has a hanging ear 220 and a tail wing 230.

[0070] The hanging ear 220 has a flat state along the second direction and a bent state extending along the third direction. When the hanging ear 220 is in the flat state, the width of the hanging ear 220 is greater than the width of the nail magazine base 100. The hanging ear 220 includes a first hanging ear 221 and a second hanging ear 222. When the hanging ear 220 is in the bent state, in the third direction, the length of the first hanging ear 221 is greater than the length of the second hanging ear 222.

[0071] Specifically, in response to the patch 200 being installed on the staple cartridge base 100, the first hanging ear 221 and the second hanging ear 222 have different lengths in the third direction. Figure 4 As shown, the first hanging ear 221 on one side has a height H1, and the second hanging ear 222 on one side has a height H2, and H1>H2. The patch 200 is limited by the different heights of H1 and H2, so that the patch 200 and the nail magazine base 100 maintain a relatively static position. If H1=H2, it is possible that the patch 200 is offset in the second direction or the third direction due to the two limiting points being at the same height. In some embodiments, Figure 4 , Figure 5As shown, the nail magazine assembly 1000 also includes a mounting hole 201 and a mounting member 210. The mounting holes 201 are arranged in pairs at the edge of the patch 200. Specifically, two of the mounting holes 201 form a group and are configured to install the mounting member 210. At least a portion of the mounting member 210 passes through the mounting hole 201 and is clamped with the nail magazine base 100, and is configured to press the edge of the patch 200 against the nail magazine base 100.

[0072] In some embodiments, the mounting member 210 is a "J-shaped" structural member, having a mounting member body 211 and a fixed foot 212, at least a portion of the fixed foot 212 is a bendable structure, and in the nail magazine assembly, two fixed feet 212 can be provided, and the two fixed feet 212 are symmetrically arranged, and a first limiting hole 202 is provided through the surface of the fixed foot 212. In response to the mounting member 210 being installed on the nail magazine base 100, at least a portion of the fixed foot 212 passes through the mounting hole 201 and is bent in the positive direction or the reverse direction of the first direction, so that a portion of the fixed foot 212 is parallel to the plane where the mounting member body 211 is located.

[0073] In some embodiments, the height difference between the lower surface of the mounting body 211 and the upper surface of the fixing foot 212 is 0.5-3 mm. It is configured to limit the movement range of the patch 200 in the third direction, so that the mounting member 210 fixes the edge of the patch 200 .

[0074] The inner side wall of the nail magazine base 100 is provided with a first limiting member 110 matching the first limiting hole 202. Figure 6 As shown, the shape and structure of the first limiting member 110 match the first limiting hole 202. In response to the fixing leg 212 passing through the mounting hole 201 and bending in the positive direction or the reverse direction of the first direction so that the fixing leg 212 is parallel to the plane where the mounting member body 211 is located, the first limiting hole 202 is sleeved on the first limiting member 110, so that the mounting member 210 and the nail magazine base 100 are fixed in position, thereby achieving the fixing of the edge of the patch 200 by the mounting member 210.

[0075] In some embodiments, the first limiting hole 202 may be a teardrop-shaped structure. Compared with a circular structure, the teardrop-shaped structure may make the first limiting hole 202 and the first limiting member 110 more accurately connected. The teardrop-shaped structure may limit the connection direction between the first limiting hole 202 and the first limiting member 110 to a certain extent.

[0076] It should be separately explained that the present disclosure does not specifically limit the shapes of the first limiting hole 202 and the first limiting member 110. The first limiting hole 202 and the first limiting member 110 may be teardrop-shaped, triangular, rectangular, or any other shape structure that can accurately position the first limiting hole 202 and the first limiting member 110.

[0077] In some embodiments, in order to ensure that other components of the stapler can work together with the stapler assembly to clamp the anastomosis, it is necessary to limit the thickness of the mounting member 210. Combined with a large amount of data measurement results, the thickness of the mounting member 210 in the present application is 0.05-0.2 mm. The thickness of the mounting member 210 within this range can effectively compress the patch 200, while ensuring that the patch 200 can be clamped by the stapler assembly and other components of the stapler, so that the edge of the patch 200 remains stable during the cutting process.

[0078] In some embodiments, the staple cartridge assembly 1000 further includes a staple cartridge housing 410, which is disposed outside the staple cartridge base 100 and is configured to be snap-fitted with the patch 200. Specifically, the staple cartridge housing 410 is provided with a hook structure 411, which is configured to cooperate with the hook ear 220 structure to fix the patch 200 to the staple cartridge base 100.

[0079] The side wall of the nail magazine housing 410 is penetrated with a second limiting hole 402 and a third limiting hole 403, and the second limiting hole 402 and the third limiting hole 403 are configured to limit the position of the nail magazine housing 410 and the nail magazine base 100. The outer wall of the nail magazine base 100 is provided with a second limiting member 120 and a third limiting member 130, and the second limiting member 120 and the third limiting member 130 are limiting protrusions on the base 100. In response to the assembly of the nail magazine housing 410 and the nail magazine base 100, the second limiting hole 402 cooperates with the second limiting member 120; the third limiting hole 403 cooperates with the third limiting member 130, so that the position of the nail magazine housing 410 and the nail magazine base 100 is fixed. In this way, the auxiliary fixation of the patch 200 by the nail magazine housing 410 is achieved.

[0080] In some embodiments, Figure 7 As shown, the staple cartridge assembly 1000 further includes a second through hole 102, which is disposed through the surface of the staple cartridge base 100 and is configured to limit the movement position of the staple assembly 500. Figure 8 As shown, the second through hole 102 may be provided with a plurality of holes, configured to accommodate a plurality of staple assemblies 500. At least a portion of the staple assemblies 500 is disposed inside the second through hole 102.

[0081] In some embodiments, Fig. 9 As shown, the staple assembly 500 includes: a staple 510 and a support member 520. The staple 510 is disposed in the second through hole 102 and is suitable for moving under the push of the support member 520. The support member 520 is disposed at one end of the staple 510 away from the patch 200 and is configured to support the movement of the staple 510 under the action of an external force.

[0082] In some embodiments, the staple 510 has a first position and a second position. In response to the staple 510 being in the first position, the staple 510 is away from the patch 200 ; in response to the staple 510 being in the second position, the staple 510 penetrates the patch 200 under the push of the support member 520 .

[0083] In some embodiments, the support member 520 is as follows Fig.10 As shown, the support member 520 includes a main body 521, a receiving groove 522 and a stopper 523. The receiving groove 522 is disposed at the top of the main body 521 and may be a long strip-shaped groove for accommodating the connection portion of the staple 510 away from the staple tip. Fig. 9 , Fig.10 As shown, the outer diameter of the connecting portion of the staple 510 matches the inner diameter of the receiving groove 522. The connecting portion of the staple 510 can be disposed in the receiving groove 522. Further, in response to the support member 520 moving in the third direction, the staple 510 moves synchronously with the support member 520. The limit block 523 is disposed on the outer side wall of the body portion 521. The limit block 523 has an inclined surface and is configured to drive the support member 520 to move in the second direction under the action of an external force.

[0084] In some embodiments, the support member 520 further includes a stopper 524. Fig.11 As shown, the stopper 524 is disposed on one side or both sides of the body 521, and is configured to make the support member 520 engage with the staple cartridge base 100. In response to the staple assembly 500 moving in the third direction, the support member 520 drives the staple 510 to penetrate the patch 200. When the staple 510 switches from the first position to the second position, the stopper 524 of the support member 520 engages with the inner side wall of the second through hole 102 of the staple cartridge base 100. At this time, in response to the withdrawal of the external thrust, the support member 520 remains in the second position.

[0085] It should be separately explained that the locking portion 524 may be an elastic component, and in response to the support member 520 moving into the second through hole 102, the locking portion 524 is engaged with the inner wall of the second through hole 102. When the staple assembly 500 moves to the second position, at least a portion of the locking portion 524 is disengaged from the second through hole 102, so that the support member 520 is locked with the staple cartridge base 100.

[0086] In some embodiments, the staple cartridge assembly 1000 further includes a staple pusher 600, which is slidably connected to the staple cartridge base 100, is disposed at the bottom of the staple cartridge base 100, and can move along the first direction, and is configured to push the staple assembly 500 to move in the third direction. Fig.12 As shown, the staple pusher 600 has a matching shape structure with the interior of the staple cartridge base 100, and the staple pusher 600 can move in a first direction along the internal track of the staple cartridge base 100. In response to the staple pusher 600 moving in the first direction, at least a portion of the staple pusher 600 contacts the staple assembly 500, so that the staples 510 move in a third direction so that the staples 510 pierce the patch 200.

[0087] The stapler base 100 can accommodate the staple assembly and the staple pusher 600. The staple pusher 600 can move forward to fire the staples. The staple pusher 600 can move forward in one direction to fire the staples. The support member supporting the staples behind the staple pusher 600 can block the staple pusher 600 so that the staple pusher 600 cannot move backward. Fig.13 As shown, the staple pusher 600 has a plurality of staple pushing inclined surfaces 610 . The arrangement of the plurality of staple pushing inclined surfaces 610 can effectively decompose the stress generated when the staple pusher 600 pushes the stapler base 100 , so that the staple pusher 600 can push the stapler assembly more easily.

[0088] The multiple nail pushing inclined surfaces 610 have the same slope, wherein the nail pushing inclined surface 610 of the nail pusher 600 and the inclined surface of the limiting block 523 have the same slope. In response to the nail pusher 600 moving in the first direction, the nail pushing inclined surface 610 of the nail pusher 600 fits with the force-bearing inclined surface of the limiting portion. In response to the nail pusher 600 moving along the first direction, the nail pusher 600 pushes the support member 520 to move so that the anastomosis staple 510 punctures the patch 200.

[0089] In some embodiments, if multiple nail pushing inclined surfaces 610 are located in the same plane, the problem of nail pushing being blocked and difficult to push may occur when the nail pusher 600 pushes the staple assembly 500. Therefore, in this embodiment, the multiple nail pushing inclined surfaces 610 are located at different positions in the first direction. Specifically, the nail pushing inclined surfaces 610 include a first inclined surface, a second inclined surface, a third inclined surface, and a fourth inclined surface. When the nail pusher 600 is fixed at the bottom position of the staple cartridge base 100, the end point of the first inclined surface is the shortest distance from the end buckle 300, and the end point of the fourth inclined surface is the longest distance from the end buckle 300. In response to the movement of the nail pusher 600 in the first direction, the first inclined surface first contacts the support member 520, pushing the staple assembly 500 to switch from the first position to the second position. In the process of the first inclined surface pushing the staple assembly 500 to move, the end point of the second inclined surface contacts the support member 520 of another staple assembly 500, so that the other staple assembly 500 moves in the third direction. Similarly, the first inclined surface, the second inclined surface, the third inclined surface and the fourth inclined surface contact the staple assembly 500 in sequence to push the staple assembly 500 to switch from the first position to the second position.

[0090] In some embodiments, the stapler pusher 600 has an initial position, a first limit position, and a second limit position. When the stapler pusher 600 is in the initial position, the stapler is usually in a state before firing or about to fire. During the firing process of the stapler, the stapler pusher 600 is acted upon and moves toward the first limit position. When the stapler pusher 600 is in the first limit position, the positional relationship between the pusher and the staple magazine base 100 is as follows: Fig.14 As shown; in response to the nail pusher 600 being in the initial position and the first extreme position, the end buckle 300 and the nail magazine base 100 clamp the patch 200.

[0091] In some embodiments, Fig.13 As shown, the nail pusher 600 further includes a column 620, which is disposed in the middle of the nail pusher 600 and is configured to push the end buckle 300 under the action of an external force, so that the end buckle 300 moves in the first direction. Specifically, the side of the column 620 that contacts the end buckle 300 has the same planar structure, so that when the nail pusher 600 moves in the first direction to push the end buckle 300, the end buckle 300 also moves in the first direction.

[0092] In some embodiments, Fig.14As shown, when the nail pusher 600 is in the first extreme position, if the nail pusher 600 continues to move in the first direction under the action of external force, at this time, the nail pusher 600 will push the end buckle 300 to move forward to the second extreme position. When the nail pusher 600 is in the second extreme position, the elastic member 330 is compressed, and the end buckle 300 is separated from the nail magazine base 100 to release the patch 200.

[0093] In some embodiments, when the nail pusher 600 moves to the second extreme position, the elastic member 330 is also compressed, and the end buckle 300 is separated from the nail magazine base 100 to release the patch 200. In either case, when the nail pusher 600 is in the first extreme position, the patch 200 will not be released, and when the nail pusher 600 is in the second extreme position, the patch 200 will definitely be released.

[0094] A second aspect of the present disclosure provides a stapler, such as Fig.15 As shown, the stapler includes: a stapler body, an anvil assembly 2000 and the staple cartridge assembly 1000 provided in the first aspect of the embodiment of the present disclosure, the anvil assembly 2000 is connected to the staple cartridge assembly 1000, and is configured to be clamped or separated from the staple cartridge assembly 1000 under the control of the stapler body. The staple cartridge assembly 1000 and the anvil assembly 2000 are clamped and fixed to the surface of the cut tissue (anastomosis) together, and at this time, the staple assembly 500 in the staple cartridge assembly 1000 can be fired, and the staples 510 are switched from the first position to the second position, and the fired staples 510 pass through the tissue and the patch 200, and are deformed at the anvil groove of the anvil assembly 2000, completing the closure of the anastomosis.

[0095] In some embodiments, the stapler further comprises: a cutting knife assembly, which is disposed on a side of the staple pusher 600 away from the end buckle 300, and comprises a cutting portion configured to push the staple pusher 600 to move under an external force.

[0096] When the stapler is fired, the staple magazine assembly 1000 and the stapler seat assembly 2000 are closed, and the firing rod of the stapler can move forward to push the cutting assembly to cut the tissue. The cutting assembly is driven to drive the staple pusher 600 to move forward, and the staple pusher 600 can fire the staples in the staple magazine assembly 1000. The staple legs of the staples can pass through the tissue and press against the stapler seat assembly 2000 to be squeezed and deformed, thereby closing the wound and stopping bleeding.

[0097] The cutting portion moves along with the cutting blade assembly in the first direction, and in response to the firing rod pushing the staple pusher 600, the cutting portion of the cutting blade synchronously cuts the patch 200. In response to the cutting blade assembly pushing the staple pusher 600 assembly to move in the first direction to push against the end buckle 300, the end buckle 300 is at least partially separated from the staple cartridge assembly 1000, and at this time, the patch 200 can be released from between the staple cartridge base 100 and the end buckle 300. The stapler using the staple cartridge assembly 1000 can more conveniently install or release the patch 200, thereby achieving the purpose of quickly installing or releasing the patch 200.

[0098] Furthermore, compared with the related art, the stapler assembly 1000 and the stapler provided in the present invention have a special-shaped patch 200 and a movable end buckle 300, and the patch 200 is compressed or released by relative sliding of the end buckle 300 and the stapler housing 410 with the stapler base 100, so as to achieve the purpose of effectively installing or removing the patch 200. The structure is simple, the operation is convenient, and the safety and reliability of the instrument are improved.

[0099] In some embodiments, Fig.12 As shown, the anvil assembly 2000 can be connected with the stapler assembly 1000 and arranged on the stapler. The anvil assembly 2000 achieves tissue cutting and completes the reinforcement and repair of the anastomosis by cooperating with the stapler body and the stapler assembly 1000.

[0100] During the operation, the stapler 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 to be cut. At this time, the stapler can be fired to make the cutting knife assembly cut the patch 200 and the tissue at the same time. At the same time, under the pushing action of the cutting knife assembly, the stapler 510 is pushed to move in the third direction to pass through the patch 200 and the human tissue. The stapler 510 is deformed on the surface of the staple seat assembly 2000 to complete the closure of the anastomosis. At this time, the stapler 510 fixes the patch 200 at the anastomosis by stapling the patch 200, and also completes the cutting of the patch 200 and the human tissue.

[0101] It should be noted that the stapler assembly 1000 can be detached from the stapler body 3000. When the staples 510 are fired, the stapler assembly 1000 and the anvil assembly 2000 work together to complete the reinforcement and repair of the anastomosis. After that, the stapler assembly 1000 can be detached from the stapler body 3000 and replaced as a whole. Compared with the replacement solution of only replacing the patch 200, the method of disassembling the stapler assembly 1000 as a whole is more conducive to portable operation during surgery.

[0102] It should be further explained that the patch 200 described in the present disclosure 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.

[0103] The specific structure, working principle, and beneficial effects of the stapler assembly and stapler provided in the embodiments of the present disclosure may refer to the stapler assembly and stapler described in any of the above embodiments, and will not be elaborated here.

[0104] 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.

[0105] 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 magazine assembly, characterized in that: include: A staple cartridge base extending along a first direction and configured to accommodate a staple assembly; A patch, detachably covering the nail magazine base, wherein the patch is provided with mounting holes in pairs near the edge in the second direction, and the patch has hanging ears, configured to assist the edge of the patch to fit with the nail magazine base, and the hanging ears include a first hanging ear and a second hanging ear, and in the third direction, the length of the first hanging ear is greater than the length of the second hanging ear; The mounting member is a "J"-shaped structural member, including a mounting member body and a fixing foot, at least a portion of the mounting member passes through the mounting hole and is clamped with the nail magazine base, and is configured to fix the edge of the patch with the nail magazine base, Among them, at least a part of the fixing leg is a bendable structure; a first limiting hole is provided through the surface of the fixing leg, which is configured to be clamped with the nail magazine base.

2. The staple cartridge assembly according to claim 1, characterized in that: The nail magazine base also includes: The first limiting member is disposed on the inner side wall of the nail magazine base and is configured to limit the position of the fixing foot.

3. The staple cartridge assembly according to claim 2, characterized in that: The first limiting hole matches the shape of the first limiting member, and in response to the fixing foot being installed on the nail magazine base, the first limiting hole is engaged with the first limiting member.

4. The staple cartridge assembly according to claim 1, characterized in that: The distance between the lower surface of the mounting body and the upper surface of the fixing foot is greater than the thickness of the patch.

5. The staple cartridge assembly according to claim 1, characterized in that: The height difference between the lower surface of the mounting body and the upper surface of the fixing foot is 0.5-3 mm.

6. The staple cartridge assembly according to claim 1, characterized in that: The thickness of the mounting piece is 0.05-0.2 mm.

7. The staple cartridge assembly according to claim 2, characterized in that: The first limiting hole and / or the first limiting member is a teardrop-shaped structure.

8. The staple cartridge assembly according to claim 1, characterized in that: Also includes: The nail magazine shell is configured to be engaged with the nail magazine base to limit the range of movement of the hanging ear.

9. The staple cartridge assembly according to claim 1, characterized in that: Also includes: An end buckle is movably connected to the nail magazine base and is configured to clamp the end of the patch. The end buckle has an end cap, and a first through hole is provided through the surface of the end cap, which is configured to allow an external component to extend into the end cap to drive the end buckle to move.

10. The staple cartridge assembly according to claim 9, characterized in that: The end cap has an inclined surface, and in response to the end buckle being installed on the nail magazine base, the inclined surface and the inclined end surface of the nail magazine base are in a different plane.

11. The staple cartridge assembly according to claim 1, characterized in that: Also includes: A staple pusher is slidably connected to the staple cartridge base and is configured to slide in a first direction to push the staple assembly to move. Wherein, the nail pusher has a plurality of nail pushing inclined surfaces, and the slopes of the plurality of nail pushing inclined surfaces are the same.

12. The staple cartridge assembly according to claim 11, characterized in that: The edges of the plurality of push pin inclined surfaces are located at different positions in the first direction.

13. A stapler, characterized in that: include: A stapler body; The staple cartridge assembly according to any one of claims 1 to 12, wherein the staple cartridge assembly is detachably connected to the stapler body; The anvil assembly is connected to the staple cartridge assembly and is configured to clamp or separate from the staple cartridge assembly under the control of the stapler body.

14. The stapler according to claim 13, characterized in that: include: The cutting knife assembly, in response to the stapler cartridge assembly being assembled with the stapler body, abuts against a side of the stapler pusher away from the end buckle and is configured to push the stapler pusher to move under the action of an external force.

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