Anastomat capable of automatically opening jaw

Abstract

The utility model discloses an anastomat with a jaw capable of being automatically opened. The anastomat comprises a connecting block, a nail abutting seat, a nail box base and an elastic piece. A mounting groove is formed in the connecting block; the nail propping seat is fixedly mounted on the connecting block; the nail box base is hinged to the connecting block, and a jaw is formed between the nail box base and the nail abutting base. The first end of the elastic piece is inserted into the mounting groove, and the second end of the elastic piece abuts against the surface, facing the nail abutting seat, of the nail box base; in the first state, the nail box base and the nail abutting base are arranged in parallel, in the second state, an acute angle is formed between the nail box base and the nail abutting base, and the elastic piece has the movement tendency enabling the nail box base to be away from the nail abutting base so that the anastomat can be converted into the second state from the first state. Due to the arrangement of the elastic piece, after the anastomat completes cutting anastomosis operation, the jaw can be automatically opened without continuously applying external force, so that the anastomat can be conveniently separated from a clamped biological tissue.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to an anastomosis device with automatically opened jaws. Background Art

[0002] Staplers are widely used suturing devices in modern medicine. Their speed, simplicity, and safety make them crucial in clinical surgery. They primarily work by using titanium or stainless steel staples to separate or staple tissue, similar to a stapler. Compared to traditional manual suturing, staplers offer advantages such as ease of use, reduced surgical time, single-use design to avoid cross-infection, tight sutures with appropriate tightness, and fewer side effects and complications.

[0003] When using a stapler for surgical operations, after the cutting and stapling actions are completed, the stapler jaws need to be opened to detach the stapler from the clamped tissue. Existing staplers require the operator to apply external force to open the stapler. However, during the opening process, sufficient external force needs to be applied to the stapler, which is time-consuming and labor-intensive. If the force applied is insufficient or the stapler is not opened in time, it may remain in the tissue for a long time, which may cause unnecessary damage to the surrounding tissue, such as compression and tearing.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0005] The purpose of the utility model is to provide a stapler with automatically opening jaws, which can automatically open the jaws without continuously applying external force, so as to facilitate the separation of the stapler from the clamped biological tissue.

[0006] In order to achieve the above-mentioned purpose, the technical solution provided by a specific embodiment of the present invention is as follows:

[0007] A stapler with automatically opening jaws, comprising:

[0008] A connecting block, wherein the connecting block is provided with a mounting groove;

[0009] An anvil, fixedly mounted on the connecting block;

[0010] A nail magazine base is hingedly mounted on the connecting block, with a jaw formed between the nail magazine base and the nail anvil;

[0011] an elastic member, wherein a first end of the elastic member is inserted into the mounting groove, and a second end of the elastic member abuts against a surface of the nail magazine base facing the nail anvil;

[0012] In the first state, the jaws are closed, and in the second state, the jaws are opened. The elastic member has a tendency to move the stapler base away from the stapler seat, so that the stapler is transformed from the first state to the second state.

[0013] In one or more embodiments of the present invention, the elastic member includes a first abutting portion inserted in the installation groove, a second abutting portion abutting against the nail magazine base, and a connecting portion connecting the first abutting portion and the second abutting portion.

[0014] In one or more embodiments of the present invention, an undercut is provided on the first abutting portion, and the undercut abuts against the inner side wall of the installation groove.

[0015] In one or more embodiments of the present invention, the first end of the undercut is connected to the end of the first abutting portion away from the connecting portion, and the second end of the undercut abuts against the inner side wall of the installation groove away from the pin seat.

[0016] In one or more embodiments of the present invention, a receiving cavity is formed between the nail magazine base and the outer wall of the connecting block, the second abutting portion is received in the receiving cavity, and the end of the second abutting portion away from the connecting portion abuts against the nail magazine base. In the first state, the end of the second abutting portion connected to the connecting portion abuts against the connecting block, and in the second state, the end of the second abutting portion connected to the connecting portion is separated from the connecting block.

[0017] In one or more embodiments of the present invention, an avoidance groove is provided at the end of the nail magazine base facing the connecting block, and the connecting portion partially extends into the avoidance groove.

[0018] In one or more embodiments of the present invention, the elastic member further includes a bending portion, which is connected to the end of the second abutting portion away from the connecting portion. In the first state, the bending portion abuts against the connecting block, and in the second state, the bending portion is separated from the connecting block.

[0019] In one or more embodiments of the present invention, the depth direction of the mounting groove is arranged perpendicular to the dowel seat.

[0020] In one or more embodiments of the present invention, one of the anvil and the connecting block is provided with a mounting hole, and the other is provided with a mounting column that matches the mounting hole.

[0021] In one or more embodiments of the present invention, the nail magazine base includes a main body and two mounting portions arranged on both sides of the main body along the width direction of the main body, and the mounting portions are rotatably mounted on the connecting block through mounting members.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The utility model provides an elastic member so that after completing the cutting and stapling operation, the stapler can automatically open its jaws without continuously applying external force, so as to facilitate the detachment of the stapler from the clamped biological tissue. The stapler has a simple structure, saves time and effort, simplifies surgical operations, and avoids the stapler from causing damage to the human body or other biological bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of a stapler with automatically opened jaws in one embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the explosion structure of the stapler with automatically opened jaws in one embodiment of the present invention;

[0027] Figure 3 This is a schematic cross-sectional view of the structure of the stapler with automatically opened jaws in a first state according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic cross-sectional view of the stapler with automatically opened jaws in a second state according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the assembly structure of the connecting block and the elastic member in one embodiment of the present utility model;

[0030] Figure 6 This is a schematic cross-sectional view of the connecting block and the elastic member in one embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the three-dimensional structure of the elastic member in one embodiment of the present utility model;

[0032] Figure 8 for Figure 3 A magnified view of the local structure at point A;

[0033] Figure 9 for Figure 4 A magnified view of the local structure at point B in the middle. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0037] The technical solution of the present utility model will be described below with reference to the accompanying drawings.

[0038] Reference Figures 1 to 6 As shown, the stapler with automatically opening jaws in this embodiment includes: a connecting block 1, a stapler seat 2, a staple magazine base 3, and an elastic member 4.

[0039] Among them, the connecting block 1 is provided with a mounting groove 11; the nail anvil 2 is fixedly installed on the connecting block 1; the nail magazine base 3 is hingedly installed on the connecting block 1, and a jaw 100 is formed between the nail magazine base 3 and the nail anvil 2; the first end of the elastic member 4 is inserted into the mounting groove 11, and the second end of the elastic member 4 abuts on the surface of the nail magazine base 3 facing the nail anvil 2; in the first state, the nail magazine base 3 is arranged parallel to the nail anvil 2, and the jaw 100 is closed; in the second state, the nail magazine base 3 and the nail anvil 2 form an acute angle, and the jaw 100 is open; the elastic member 4 has a movement tendency that makes the nail magazine base 3 move away from the nail anvil 2, so that the anastomosis device is transformed from the first state to the second state.

[0040] In the absence of external force, the magazine base 3 is acted upon by the elastic member 4 to rotate away from the anvil 2, the jaws 100 remain open, and the stapler is in the second state. If the operator closes the jaws 100 or fires the stapler, the magazine base 3 overcomes the elastic force exerted by the elastic member 4 on the magazine base 3 and rotates toward the anvil 2, the jaws 100 remain closed, and the stapler transitions from the second state to the first state. If the operator opens the jaws 100 or reopens the jaws 100 after firing, the magazine base 3 is no longer subject to external force, and the elastic force exerted by the elastic member 4 on the magazine base 3 drives the magazine base 3 to rotate away from the anvil 2, the jaws 100 remain open, and the stapler transitions from the first state to the second state.

[0041] By setting the elastic member 4, after completing the cutting and stapling operation, the stapler can automatically open the jaws 100 without continuously applying external force, so as to facilitate the detachment of the stapler from the clamped biological tissue; the stapler has a simple structure, saves time and effort, simplifies the surgical operation, and avoids the stapler from causing damage to the human body or other biological bodies.

[0042] Specifically, refer to Figure 6 、 Figure 7 As shown, the elastic member 4 in this embodiment includes a first abutting portion 41 inserted into the mounting slot 11, a second abutting portion 42 abutting against the magazine base 3, and a connecting portion 43 connecting the first abutting portion 41 and the second abutting portion 42. In the natural state, the first abutting portion 41 and the second abutting portion 42 of the elastic member 4 are arranged approximately flush. In the natural state, the stapler is in the second state under the action of the elastic member 4. When the stapler moves from the second state to the first state, the second abutting portion 42 rotates toward the anvil 2 under the action of the magazine base 3 until the magazine base 3 and the anvil 2 are arranged parallel, and the jaws 100 close. In the first state, the angle between the first abutting portion 41 and the second abutting portion 42 is α1; in the second state, the angle between the first abutting portion 41 and the second abutting portion 42 is α2, and α2 is greater than α1.

[0043] Preferably, refer to Figure 6 、 Figure 7 As shown, in this embodiment, the first abutting portion 41 is provided with an undercut 411, which abuts against the inner side wall of the mounting groove 11. The provision of the undercut 411 prevents the first abutting portion 41 from being disengaged from the mounting groove 11 when the stapler switches between the first state and the second state.

[0044] Furthermore, in order to ensure that the first abutting portion 41 is installed in the installation groove 11 through the undercut 411, refer to Figure 6 As shown, the first end of the undercut 411 in this embodiment is connected to the end of the first abutting portion 41 away from the connecting portion 43, and the second end of the undercut 411 abuts against the inner wall of the mounting groove 11 away from the anvil 2. When the elastic member 4 is not installed in the mounting groove 11, the distance between the second end of the undercut 411 and the first abutting portion 41 can be slightly larger than the width of the mounting groove 11. When the first abutting portion 41 is installed in the mounting groove 11, the second end of the undercut 411 gradually undergoes slight elastic deformation toward the first abutting portion 41, thereby allowing the first abutting portion 41 and the undercut 411 to be installed in the mounting groove 11 together.

[0045] Optional, see Figure 6As shown, the depth direction of the mounting groove 11 in this embodiment is perpendicular to the anvil 2. This design facilitates the elastic deformation of the elastic member 4 when the stapler switches between states. Of course, the depth of the mounting groove 11 can also be inclined, as long as the elastic member 4 does not disengage from the mounting groove 11 when the stapler switches between the first state and the second state.

[0046] Reference Figure 8 、 Figure 9 As shown, in this embodiment, a receiving cavity 5 is formed between the magazine base 3 and the outer wall of the connecting block 1. The second abutting portion 42 is received in the receiving cavity 5. The end of the second abutting portion 42 away from the connecting portion 43 abuts against the magazine base 3. In a first state, the end of the second abutting portion 42 connected to the connecting portion 43 abuts against the connecting block 1. In a second state, the end of the second abutting portion 42 connected to the connecting portion 43 is separated from the connecting block 1. This design can utilize the original space of the stapler without requiring excessive modifications to the magazine base 3 and the connecting block 1, thus preventing structural complexity and reducing production costs.

[0047] Reference Figure 8 、 Figure 9 As shown, in this embodiment, the end of the magazine base 3 facing the connecting block 1 is provided with an escape groove 311, and the connecting portion 43 partially extends into the escape groove 311. According to this design, the height of the connecting portion 43 can be higher than the height of the inner wall of the magazine base 3. That is, when the stapler is in the first state, the angle formed between the first abutting portion 41 and the second abutting portion 42 can be smaller, that is, the elastic member 4 undergoes a greater degree of elastic deformation, so that the second abutting portion 42 can exert a greater elastic force on the magazine base 3 in the first state, and the stapler can be better automatically converted from the first state to the second state in the absence of external force.

[0048] Optional, see Figure 8 、 Figure 9 As shown, the elastic member 4 in this embodiment further includes a bent portion 44, which is connected to the end of the second abutting portion 42 away from the connecting portion 43. In the first state, the bent portion 44 abuts the connecting block 1, and in the second state, the bent portion 44 is separated from the connecting block 1. The provision of the bent portion 44 allows the abutment point between the elastic member 4 and the nail magazine base 3 to form a circular arc, thereby preventing the elastic member 4 from scratching the inner wall of the nail magazine base 3.

[0049] Reference Figure 2 、 Figure 3As shown, in this embodiment, a mounting hole 21 is provided through the end of the anvil 2 facing the connecting block 1, and a mounting post 12 is provided on the connecting block 1 to cooperate with the mounting hole 21. Through the mutual cooperation between the mounting hole 21 and the mounting post 12, the anvil 2 can be installed on the connecting block 1. Of course, the present application is not limited to this, and the mounting hole 21 can also be provided on the connecting block 1, and the mounting post 12 can also be provided on the anvil 2, so that the anvil 2 can also be installed on the connecting block 1.

[0050] Reference Figure 2 As shown, the magazine base 3 in this embodiment includes a main body 31 and two mounting portions 32 arranged on both sides of the main body 31 along the width direction of the main body 31. The mounting portions 32 are rotatably mounted on the connecting block 1 via mounting members 6. The mounting members 6 in this embodiment can be structures such as rivets or pins that can connect two parts.

[0051] Specifically, refer to Figure 2 As shown, the connecting block 1 is provided with two first assembly holes 13 arranged opposite each other along the width direction of the main body 31, and the mounting portion 32 is provided with a second assembly hole 321 that cooperates with the first assembly hole 13. The mounting member 6 sequentially passes through the second assembly hole 321 and the first assembly hole 13 to rotatably mount the mounting portion 32 on the connecting block 1. Optionally, the two first assembly holes 13 can be provided through or separately.

[0052] It can be seen from the above technical solutions that the present invention has the following beneficial effects:

[0053] The utility model provides an elastic member so that after completing the cutting and stapling operation, the stapler can automatically open its jaws without continuously applying external force, so as to facilitate the detachment of the stapler from the clamped biological tissue. The stapler has a simple structure, saves time and effort, simplifies surgical operations, and avoids the stapler from causing damage to the human body or other biological bodies.

[0054] 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 present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0055] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A stapler with automatically opening jaws, characterized in that: The anastomosis device comprises: A connecting block, wherein the connecting block is provided with a mounting groove; An anvil, fixedly mounted on the connecting block; A nail magazine base is hingedly mounted on the connecting block, with a jaw formed between the nail magazine base and the nail anvil; an elastic member, wherein a first end of the elastic member is inserted into the mounting groove, and a second end of the elastic member abuts against a surface of the nail magazine base facing the nail anvil; In the first state, the jaws are closed, and in the second state, the jaws are opened. The elastic member has a tendency to move the stapler base away from the stapler seat, so that the stapler is transformed from the first state to the second state.

2. The stapler with automatically opened jaws according to claim 1, characterized in that: The elastic member includes a first abutting portion inserted in the installation slot, a second abutting portion abutting against the nail magazine base, and a connecting portion connecting the first abutting portion and the second abutting portion.

3. The stapler with automatically opened jaws according to claim 2, characterized in that: An undercut is provided on the first abutting portion, and the undercut abuts against the inner side wall of the installation groove.

4. The stapler with automatically opening jaws according to claim 3, characterized in that: The first end of the undercut is connected to the end of the first abutting portion away from the connecting portion, and the second end of the undercut is abutted against the inner side wall of the installation groove away from the pin seat.

5. The stapler with automatically opened jaws according to claim 2, characterized in that: A receiving cavity is formed between the base of the nail magazine and the outer wall of the connecting block, and the second abutting portion is received in the receiving cavity. The end of the second abutting portion away from the connecting portion abuts against the base of the nail magazine. In the first state, the end of the second abutting portion connected to the connecting portion abuts against the connecting block. In the second state, the end of the second abutting portion connected to the connecting portion is separated from the connecting block.

6. The stapler with automatically opening jaws according to claim 2, characterized in that: An avoidance groove is provided at the end of the nail magazine base facing the connecting block, and the connecting portion partially extends into the avoidance groove.

7. The stapler with automatically opening jaws according to claim 2, characterized in that: The elastic member further includes a bending portion connected to an end of the second abutting portion away from the connecting portion. In a first state, the bending portion abuts against the connecting block, and in a second state, the bending portion is separated from the connecting block.

8. The stapler with automatically opening jaws according to claim 1, characterized in that: The depth direction of the mounting groove is arranged perpendicular to the anvil seat.

9. The stapler with automatically opening jaws according to claim 1, characterized in that: One of the anvil seat and the connecting block is provided with a mounting hole, and the other is provided with a mounting column matched with the mounting hole.

10. The stapler with automatically opened jaws according to claim 1, characterized in that: The nail magazine base includes a main body and two mounting parts that are relatively arranged on both sides of the main body along the width direction of the main body. The mounting parts are rotatably mounted on the connecting block through mounting pieces.

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