anastomat

Abstract

The application discloses an anastomat, which comprises a main body, two installation parts oppositely arranged, a movable slot arranged between the two installation parts, a nail abutment assembly fixedly installed on the main body, a nail box base hingedly installed on the main body, a jaw formed between the nail abutment assembly and the nail box base, and the installation part located in the jaw, a nail gate assembly comprising a nail gate arranged in the jaw and a sliding block sliding along the length direction of the nail box, a cutting knife assembly slidingly installed in the movable slot along the axial direction of the main body, two installation bases oppositely arranged, the two installation bases being symmetrically arranged along the plane of the cutting knife assembly and installed on the installation part, and a locking assembly comprising two locking mechanisms symmetrically arranged along the plane of the cutting knife assembly, wherein, in a first state, the two locking mechanisms abut against the cutting knife assembly, and in a second state, the two locking mechanisms are separated from the cutting knife assembly. The locking mechanisms prevent the cutting knife assembly from advancing, prevent the cutting knife assembly from being triggered by mistake, avoid the human body tissue from being cut and unable to be sutured, and improve the safety of the anastomat.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a stapler that cannot be fired without staples. Background Technology

[0002] A stapler typically consists of two parts: the main body and the clip assembly. The main body is the actuating mechanism, performing operations such as clamping tissue, firing to cut and anastomose, and repositioning. The clip assembly is a loadable and detachable unit that provides the staples needed for tissue anastomosis. When performing surgery using an existing stapler, if it is fired due to misoperation without the clip assembly or with a used clip assembly, it can lead to unexpected tissue cutting without suturing, causing significant bleeding in the patient.

[0003] Therefore, in view of the above-mentioned technical problems, it is necessary to provide a stapler that cannot be fired without staples. Summary of the Invention

[0004] In view of this, the object of the present invention is to provide a stapler that cannot be fired without staples.

[0005] To achieve the above objectives, an embodiment of the present invention provides the following technical solution:

[0006] An anastomosis device, the anastomosis device comprising:

[0007] The main body has two mounting portions arranged opposite to each other, and a movable groove is provided between the two mounting portions;

[0008] An anti-pin assembly is fixedly installed on the main body;

[0009] A nail cartridge base is hinged to the main body, and a jaw is formed between the nail anchor assembly and the nail cartridge base, with the mounting part located in the jaw;

[0010] A nail gate assembly, comprising a nail gate and a slider disposed within the jaws, the slider sliding along the length direction of the nail cartridge;

[0011] The cutting blade assembly is slidably mounted in the main body along the main body axis and is at least partially inserted into the movable slot;

[0012] Two mounting bases are arranged opposite to each other, symmetrically arranged along the plane of the cutting blade assembly, and respectively fixedly installed on the corresponding mounting parts;

[0013] A locking assembly, comprising two locking mechanisms symmetrically arranged along the plane of the cutting blade assembly, wherein the locking mechanisms are rotatably mounted between the mounting portion and the mounting base;

[0014] In the first state, both locking mechanisms abut against the cutting blade assembly, and the cutting blade assembly is locked in the main body;

[0015] In the second state, both locking mechanisms are separated from the cutting blade assembly, and the cutting blade assembly slides along the axial direction of the main body toward the distal end.

[0016] In one embodiment, the locking mechanism includes a locking member and a reset elastic member. The locking member is rotatably mounted between the mounting portion and the mounting base. The first end of the reset elastic member abuts against the locking member, and the second end abuts against the mounting portion.

[0017] In one embodiment, the locking member includes a force-receiving part disposed away from the plane of the cutting blade assembly, a stop part abutting against the cutting blade assembly, and a connecting part connecting the force-receiving part and the stop part, wherein the connecting part is rotatably mounted between the mounting part and the mounting base.

[0018] In one embodiment, the mounting portion extends toward the distal end and is provided with an abutting portion, the abutting portion being located above the force-receiving portion, and the reset elastic member being located between the abutting portion and the force-receiving portion.

[0019] In one embodiment, the force-receiving part is provided with an abutment post, and the first end of the reset elastic member is located between the abutment post and the rotating part.

[0020] In one embodiment, one of the connecting part and the mounting base is provided with a first column, and the other is provided with a first mounting hole that mates with the first column. One of the connecting part and the mounting base is provided with a second column, and the other is provided with a second mounting hole that mates with the second column. The first mounting hole and the second mounting hole are coaxially arranged and parallel to the axial direction of the main body.

[0021] In one embodiment, the sidewalls of the first column and / or the second column extend outward to provide a limiting portion, and the wall of the first assembly hole and / or the second assembly hole is provided with a stop groove that cooperates with the limiting portion. In a first state, the limiting portion abuts against the stop groove at a first sidewall away from the cutting blade assembly, and in a second state, the limiting portion abuts against the stop groove at a second sidewall close to the cutting blade assembly.

[0022] In one embodiment, the slider is initially located near the pin gate;

[0023] In the first state, an angle is formed between the nail box base and the nail anchor assembly, and the slider is separated from the force-bearing parts of the two locking members;

[0024] In the second state, the nail box base is parallel to the nail anchor assembly, and the slider abuts against the force-bearing parts of both locking members.

[0025] In one embodiment, the slider includes two bosses that push the locking mechanism to rotate.

[0026] In one embodiment, the mounting base includes a support plate and a bent plate bent onto the support plate. One of the mounting part and the support plate is provided with a mounting post, and the other is provided with a mounting hole.

[0027] In one embodiment, the mounting part has a mounting groove, and the support plate extends toward the mounting part and has a positioning protrusion corresponding to the mounting groove.

[0028] The present invention has the following beneficial effects:

[0029] This invention provides a stapler that, when a used staple cartridge assembly is installed in the stapler, prevents the cutting blade assembly from advancing through a locking mechanism in the locking assembly, thus preventing firing. This prevents accidental triggering of the stapler, avoids the accidental cutting of human tissue that cannot be sutured by the stapler, avoids causing massive bleeding in the patient, and improves the safety of the stapler. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the exploded structure of the anastomosis device in a specific embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the anastomosis device in a closed state according to a specific embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the anastomosis device in the open state according to a specific embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the structure of the cutting blade assembly in the anastomosis device sliding towards the distal end in a specific embodiment of the present invention;

[0035] Figure 5 This is a side view of a portion of the anastomosis device in a first state according to a specific embodiment of the present invention;

[0036] Figure 6 This is a side view of a portion of the anastomosis device in a second state according to a specific embodiment of the present invention;

[0037] Figure 7 This is an exploded structural diagram of a portion of the anastomosis device in a specific embodiment of the present invention. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] In the description of the embodiments of the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0042] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0043] In the description of the embodiments of the present invention, it should also be noted that the terms "first," "second," etc., used herein do not specifically refer to any order or sequence, nor are they intended to limit the present case; they are merely used to distinguish components or operations described using the same technical terms.

[0044] It should be noted that, for the sake of clearer description of the structure, the term "distal end" is defined herein as the end furthest from the operator during operation, and "proximal end" as the end closest to the operator during operation. Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0045] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0046] The technical solution of the present invention will now be described with reference to the accompanying drawings.

[0047] Reference Figures 1-4 As shown, the stapler in a specific embodiment of the present invention includes:

[0048] The main body 1 has a first mounting part 51 and a second mounting part 52 disposed opposite to each other, and a movable groove is provided between the first mounting part 51 and the second mounting part 52;

[0049] Anchor seat assembly 2 is fixedly installed on the main body 1;

[0050] The nail cartridge base 3 is hinged to the main body 1, and a jaw is formed between the nail anchor assembly 2 and the nail cartridge base 3. The first mounting part 51 and the second mounting part 52 are located in the jaw.

[0051] The nailing brake assembly 8 includes a nailing brake 81 and a slider 82 disposed in the jaws, the slider 82 sliding along the length direction of the nail box 81;

[0052] The cutting blade assembly 4 is slidably installed in the main body 1 along the axial direction of the main body 1 and is at least partially inserted into the movable slot;

[0053] The first mounting base 61 and the second mounting base 62 are symmetrically arranged along the plane of the cutting blade assembly 4 and are respectively fixedly mounted on the first mounting part 51 and the second mounting part 52.

[0054] Locking assembly 7 includes a first locking mechanism and a second locking mechanism symmetrically arranged along the plane of the cutting blade assembly 4. The first locking mechanism is rotatably mounted between the first mounting part 51 and the first mounting base 61, and the second locking mechanism is rotatably mounted between the second mounting part 52 and the second mounting base 62.

[0055] In the first state, both the first locking mechanism and the second locking mechanism abut against the cutting blade assembly 4, and the cutting blade assembly 4 is locked in the main body 1; the first locking mechanism and the second locking mechanism can abut against each other or there can be a gap between them;

[0056] In the second state, both the first locking mechanism and the second locking mechanism are separated from the cutting blade assembly 4, and the cutting blade assembly 4 slides along the axis of the main body 1 toward the far end.

[0057] When the staple cartridge assembly 8 is not installed, the first and second locking mechanisms abut against the cutting blade assembly 4, preventing the cutting blade assembly 4 from advancing and thus preventing firing. This achieves the safety goal of preventing the stapler from firing when the staple cartridge assembly 8 is not installed. Based on this design, when the staple cartridge assembly 8 is not installed, it prevents accidental triggering of the stapler, avoids the accidental cutting of human tissue that cannot be sutured by the stapler, prevents massive bleeding in the patient, and improves the safety of the stapler.

[0058] Among them, reference Figure 5 , Figure 6 As shown, the first locking mechanism includes a first locking member 71 and a first reset elastic member 73. The first locking member 71 is rotatably mounted between the first mounting part 51 and the first mounting base 61. The first end of the first reset elastic member 73 abuts against the first locking member 71, and the second end abuts against the first mounting part 51.

[0059] The second locking mechanism includes a second locking member 72 and a second reset elastic member 74. The second locking member 72 is rotatably mounted between the second mounting part 52 and the second mounting base 62. The first end of the second reset elastic member 74 abuts against the second locking member 72, and the second end abuts against the second mounting part 52.

[0060] The first reset elastic element 73 and the second reset elastic element 74 can be any structure that can provide elastic force, such as a spring, compression spring, leaf spring, or airbag, which is understandable and acceptable to those skilled in the art.

[0061] Specifically, refer to Figure 7 As shown, the first locking member 71 in this embodiment includes a first force-receiving part 711 disposed away from the plane of the cutting blade assembly 4, a first stop part 712 abutting against the cutting blade assembly 4, and a first connecting part 713 connecting the first force-receiving part 711 and the first stop part 712. The first connecting part 713 is rotatably mounted between the first mounting part 51 and the first mounting base 61.

[0062] The second locking member 72 includes a second force-bearing part 721 disposed away from the plane of the cutting blade assembly 4, a second stop part 722 abutting against the cutting blade assembly 4, and a second connecting part 723 connecting the second force-bearing part 721 and the second stop part 722. The second connecting part 723 is rotatably mounted between the second mounting part 52 and the second mounting base 62.

[0063] Combination Figure 1 The slider 82 is provided with a first protrusion 821 near the first force receiving part 711 and a second protrusion 822 near the second force receiving part 721. The first protrusion 821 and the second protrusion 822 can respectively push the first force receiving part 711 and the second force receiving part 721 to rotate, thereby driving the first locking member 71 and the second locking member 72 to rotate.

[0064] In the first state, the elastic force of the first reset elastic member 73 acts on the first force-receiving part 711, so that the first stop part 712 remains in contact with the cutting blade assembly 4, and the elastic force of the second reset elastic member 74 acts on the second force-receiving part 721, so that the second stop part 722 remains in contact with the cutting blade assembly 4. In the second state, the first boss 821 and the second boss 822 of the slider 82 abut against the first force-receiving part 711 and the second force-receiving part 721 respectively. When the nail box base 3 is rotated toward the nail seat assembly 2, the first boss 821 and the second boss 822 of the slider 82 apply external force to the first force-receiving part 711 and the second force-receiving part 721 respectively, causing the first locking member 71 and the second locking member 72 to rotate parallel to the axis of the main body 1, so that the first stop part 712 and the second stop part 722 can separate from the cutting blade assembly 4, removing the obstruction to the cutting blade assembly 4, so that the cutting blade assembly 4 can be fired smoothly to complete the cutting and sewing. This design improves the safety of the stapler and prevents patients from being accidentally cut and unable to be sutured in time.

[0065] Furthermore, refer to Figures 5-7 As shown, in order to facilitate the application of the elastic force of the first reset elastic member 73 to the first force-bearing part 711 and the application of the elastic force of the second reset elastic member 74 to the second force-bearing part 721, in this embodiment, the first mounting part 51 extends toward the distal end and is provided with a first abutting part 511, the first abutting part 511 being located above the first force-bearing part 711, and the first reset elastic member 73 being located between the first abutting part 511 and the first force-bearing part 711; the second mounting part 52 extends toward the distal end and is provided with a second abutting part 521, the second abutting part 521 being located above the second force-bearing part 721, and the second reset elastic member 74 being located between the second abutting part 521 and the second force-bearing part 721.

[0066] Preferably, refer to Figure 7As shown, to prevent the first reset elastic member 73 from disengaging from the first abutment portion 511 and the first force-receiving portion 711, and to prevent the second reset elastic member 74 from disengaging from the second abutment portion 521 and the second force-receiving portion 721, in this embodiment, the first force-receiving portion 711 is provided with a first abutment post 7111, and the first end of the first reset elastic member 73 is located between the first abutment post 7111 and the first rotating portion; the second force-receiving portion 721 is provided with a second abutment post 7211, and the first end of the second reset elastic member 74 is located between the second abutment post 7211 and the second rotating portion. Preferably, the first end of the first reset elastic member 73 is sleeved on the first abutment post 7111, and the first end of the second reset elastic member 74 is sleeved on the second abutment post 7211. Preferably, the first force-receiving portion 711 is provided with a first fixing groove, and the second end of the first reset elastic member 73 is installed in the first fixing groove; the second force-receiving portion 721 is provided with a second fixing groove, and the second end of the second reset elastic member 74 is installed in the second fixing groove.

[0067] Reference Figure 7 As shown, in this embodiment, the first connecting portion 713 is provided with a first column 7131, the first mounting base 61 is provided with a first mounting hole 6121 that mates with the first column 7131, the first connecting portion 713 is provided with a second column 7132, and the first mounting portion 51 is provided with a second mounting hole 512 that mates with the second column 7132. The first mounting hole 6121 on the first mounting base 61 and the second mounting hole 512 on the first mounting portion 51 are coaxially arranged and parallel to the axial direction of the main body 1. The second connecting portion 723 is provided with a first column 7231, the second mounting base 62 is provided with a first mounting hole 6221 that mates with the first column 7231, the second connecting portion 723 is provided with a second column 7232, and the second mounting portion 52 is provided with a second mounting hole 522 that mates with the second column 7232. The first mounting hole 6221 on the second mounting base 62 and the second mounting hole 522 on the second mounting portion 52 are coaxially arranged and parallel to the axial direction of the main body 1.

[0068] Based on this design, the first locking member 71 can be rotatably mounted between the first mounting part 51 and the first mounting base 61 in a direction parallel to the axis of the main body 1, and the second locking member 72 can be rotatably mounted between the second mounting part 52 and the second mounting base 62 in a direction parallel to the axis of the main body 1. There is no need to set an additional fixing pin, and the integrated design makes the structure of the locking assembly 7 more stable and reliable.

[0069] Of course, the present invention is not limited thereto. The first connecting part 713 is provided with a first mounting hole 6121, and the first mounting base 61 is provided with a first column 7131 that cooperates with the first mounting hole 6121; or, the first connecting part 713 is provided with a second mounting hole 512, and the first mounting part 51 is provided with a second column 7132 that cooperates with the second mounting hole 512; or, the second connecting part 723 is provided with a first mounting hole 6221, and the second mounting base 62 is provided with a first column 7231 that cooperates with the first mounting hole 6221; or the second connecting part 723 is provided with a second mounting hole 522, and the second mounting part 52 is provided with a second column 7232 that cooperates with the second mounting hole 522. All of these can achieve the technical effects of the present invention and are within the scope of protection. These are things that those skilled in the art can understand and accept.

[0070] Preferably, refer to Figure 1 , Figure 7 As shown, in this embodiment, the side wall of the second column 7132 on the first connecting part 713 extends outward and is provided with a first limiting part; the side wall of the second column 7232 on the second connecting part 723 extends outward and is provided with a second limiting part 7233; the hole wall of the second mounting hole 512 on the first mounting part 51 is provided with a first stop groove 513 that cooperates with the first limiting part; the hole wall of the second mounting hole 522 on the second mounting part 52 is provided with a second stop groove 523 that cooperates with the second limiting part 7233. In the first state, the first limiting part and the first stop groove 513 abut against the first side wall away from the cutting blade assembly 4, and the second limiting part 7233 abuts against the second stop groove 523 away from the first side wall of the cutting blade assembly 4. In the second state, the first limiting part and the first stop groove 513 abut against the second side wall near the cutting blade assembly 4, and the second limiting part 7233 abuts against the second stop groove 523 near the second side wall of the cutting blade assembly 4. Based on this design, the angle of rotation of the first locking member 71 and the second locking member 72 around the axis can be controlled to prevent the first locking member 71 and the second locking member 72 from being too far away from the cutting blade assembly 4 and from being in excessive contact with each other, resulting in excessive force between them.

[0071] Of course, the present invention is not limited to this. When the first column 7131 of the first connecting part 713 and the first column 7231 of the second connecting part 723 are provided with a limiting part, the first mounting hole 6121 of the first mounting base 61 and the first mounting hole 6221 of the second mounting base 62 are provided with a stop groove that cooperates with the limiting part. All of these can achieve the technical effect of the present invention and are within the scope of protection. These are things that can be understood and accepted by those skilled in the art.

[0072] Reference Figures 1-3 As shown, in a preferred embodiment, the slider 82 is located near the pin gate 81 in the initial state.

[0073] In the first state, the stapler jaws are open, an angle is formed between the staple cartridge base 3 and the staple seat assembly 2, and the slider 82 is separated from both locking mechanisms;

[0074] In the second state, the jaws of the end anastomosis device are closed, the slider 82 is located near the end of the staple cartridge 81, the staple cartridge base 3 is parallel to the staple seat assembly 2, and the first protrusion 821 and the second protrusion 822 of the slider 82 abut against the first force-receiving part 711 and the second force-receiving part 721, respectively.

[0075] Understandably, when the stapler assembly 8 is loaded into the stapler in this embodiment, the stapler assembly 8 includes a staple cassette 81, a slider 82, and a staple cassette bracket 83. If the stapler assembly 8 is in a used state, the slider 82 on the staple cassette 81 is located at the end away from the cutting blade assembly 4. Therefore, the slider 82 is separated from the locking assembly 7. In the first state, the slider 82 cannot apply external force to the first locking member 71 and the second locking member 72. The first locking member 71 and the second locking member 72 are always in contact with the cutting blade assembly 4, and the cutting blade assembly 4 cannot advance or perform a firing operation, thereby achieving the loading... When the staple cartridge assembly 8 is used, the stapler cannot be fired for safety purposes. In the second state, since the staple cartridge assembly 8 is unused, the slider 82 on the staple cartridge 81 is located near the end of the cutter assembly 4. Therefore, the slider 82 abuts against both the first locking member 71 and the second locking member 72. In the second state, the slider 82 can apply external force to the first locking member 71 and the second locking member 72, causing the first locking member 71 and the second locking member 72 to separate from the cutter assembly 4, thus removing the obstruction to the cutter assembly 4. As a result, the cutter assembly 4 can be fired smoothly to complete the cutting and suturing.

[0076] Based on this design, during the movement of the cutting blade, the staple cartridge base 3 drives the staple cartridge 81 and slider 82 to rotate until the staple cartridge base 3 is parallel to the staple anchor assembly 2. During the rotation of the slider 82, which is located near the staple cartridge base 3, the two protrusions push the force-bearing part of the locking mechanism to rotate together. At this time, the stop part of the locking mechanism slowly moves away from the plane of the cutting blade assembly 4, allowing the cutting blade to smoothly pass through the stop part and move towards the distal end of the stapler. After the staple cartridge 81 has been used, the slider 82 is pushed to the distal end of the staple cartridge base 3 by the cutting blade and will not return to its original position. If the instrument is operated again at this time, because the slider 82 is at the distal end of the staple cartridge base 3, it cannot push the locking mechanism. The cutting blade can only move to the stop part of the locking mechanism and cannot move further forward. This achieves the purpose of preventing the used staple cartridge 81 from being reused, avoiding serious medical accidents such as cutting tissue without suturing the incision with titanium staples if the used staple cartridge 81 is misused, thus improving the safety of the stapler.

[0077] Reference Figure 7As shown, in order to facilitate the fixed installation of the first mounting base 61 on the first mounting part 51 and the fixed installation of the second mounting base 62 on the second mounting part 52, the first mounting base 61 in this embodiment includes a first support plate 611 and a first bent plate 612 bent on the first support plate 611. The first mounting part 51 is provided with a first mounting post 514 and the first support plate 611 is provided with a first mounting hole 6111. The second mounting base 62 includes a second support plate 621 and a second bent plate 622 bent on the second support plate 621. The second mounting part 52 is provided with a second mounting post 524 and the second support plate 621 is provided with a second mounting hole 6211.

[0078] Preferably, in this embodiment, the first mounting part 51 is provided with a first mounting groove 515, and the first support plate 611 extends toward the first mounting part 51 and is provided with a first positioning protrusion 6112 corresponding to the first mounting groove 515.

[0079] The second mounting part 52 has a second mounting groove 525, and the second support plate 621 extends toward the second mounting part 52 and has a second positioning protrusion 6212 corresponding to the second mounting groove 525. According to this design, the installation process can be simplified and the installation speed can be improved by alignment and registration.

[0080] As can be seen from the above technical solutions, the present invention has the following beneficial effects:

[0081] This invention provides a stapler that, when a used staple cartridge assembly is installed in the stapler, prevents the cutting blade assembly from advancing through a locking mechanism in the locking assembly, thus preventing firing. This prevents accidental triggering of the stapler, avoids the accidental cutting of human tissue that cannot be sutured by the stapler, avoids causing massive bleeding in the patient, and improves the safety of the stapler.

[0082] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0083] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A stapler, characterized in that, The stapler includes: The main body has two mounting portions arranged opposite to each other, and a movable groove is provided between the two mounting portions; An anti-pin assembly is fixedly installed on the main body; A nail cartridge base is hinged to the main body, and a jaw is formed between the nail anchor assembly and the nail cartridge base, with the mounting part located in the jaw; A nail gate assembly, comprising a nail gate and a slider disposed within the jaws, the slider sliding along the length direction of the nail cartridge; The cutting blade assembly is slidably mounted in the main body along the main body axis and is at least partially inserted into the movable slot; Two mounting bases are arranged opposite to each other, symmetrically arranged along the plane of the cutting blade assembly, and respectively fixedly installed on the corresponding mounting parts; A locking assembly, comprising two locking mechanisms symmetrically arranged along the plane of the cutting blade assembly, wherein the locking mechanisms are rotatably mounted between the mounting portion and the mounting base; In the first state, both locking mechanisms abut against the cutting blade assembly, and the cutting blade assembly is locked in the main body; In the second state, both locking mechanisms are separated from the cutting blade assembly, and the cutting blade assembly slides toward the distal end along the axis of the main body; The locking mechanism includes a locking member and a reset elastic member. The locking member is rotatably mounted between the mounting part and the mounting base. The first end of the reset elastic member abuts against the locking member, and the second end abuts against the mounting part. The locking member includes a force-bearing part disposed away from the plane of the cutting blade assembly, a stop part abutting against the cutting blade assembly, and a connecting part connecting the force-bearing part and the stop part, wherein the connecting part is rotatably mounted between the mounting part and the mounting base; One of the connecting part and the mounting base is provided with a first column, and the other part is provided with a first assembly hole that mates with the first column. One of the connecting part and the mounting base is provided with a second column, and the other part is provided with a second assembly hole that mates with the second column. The first assembly hole and the second assembly hole are coaxially arranged and parallel to the axial direction of the main body.

2. The stapler according to claim 1, characterized in that, The mounting portion extends from the proximal end away from the main body and has an abutment portion located above the force-bearing portion. The reset elastic element is located between the abutment portion and the force-bearing portion.

3. The stapler according to claim 2, characterized in that, The force-bearing part is provided with an abutment post, and the first end of the reset elastic member is located between the abutment post and the rotating part.

4. The stapler according to claim 1, characterized in that, The sidewalls of the first column and / or the second column extend outward and are provided with limiting portions. The wall of the first assembly hole and / or the second assembly hole is provided with a stop groove that cooperates with the limiting portion. In the first state, the limiting portion abuts against the stop groove at the first sidewall away from the cutting blade assembly. In the second state, the limiting portion abuts against the stop groove at the second sidewall near the cutting blade assembly.

5. The stapler according to claim 1, characterized in that, The slider is initially located near the pin gate; In the first state, an angle is formed between the nail box base and the nail anchor assembly, and the slider is separated from both of the locking mechanisms; In the second state, the nail box base is parallel to the nail anchor assembly, and the slider abuts against both of the locking mechanisms.

6. The stapler according to claim 5, characterized in that, The slider includes two bosses, which push the locking mechanism to rotate.

7. The stapler according to claim 1, characterized in that, The mounting base includes a support plate and a bent plate bent on the support plate. One of the mounting part and the support plate is provided with a mounting post, and the other is provided with a mounting hole.

8. The stapler according to claim 7, characterized in that, The mounting part is provided with a mounting groove, and the support plate extends toward the mounting part and is provided with a positioning protrusion corresponding to the mounting groove.

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