A stapler beak mounting and mating structure

Abstract

This utility model pertains to medical devices, and more particularly to a mounting and fitting structure for a stapler's nozzle. Addressing the problem of difficulty in assembling and disassembling the nozzle on existing linear staplers, this utility model provides a nozzle body and an anvil. One end of the nozzle body is inserted into the anvil. By incorporating a connecting element, the utility model provides a receiving space in the nozzle body and a limiting space in the anvil. One end of the connecting element enters the receiving space, and the other end enters the limiting space. At least one location in either the receiving space or the limiting space is detachably and fixedly connected to the connecting element, and all three components have a portion that receives the gravity transmitted from the other two, causing interference between each pair of the nozzle body, anvil, and connecting element. The connecting component design facilitates both easy assembly and disassembly of the nozzle body while increasing connection stability.

Description

Technical Field

[0001] This utility model belongs to the field of medical equipment technology, and in particular relates to a mounting and fitting structure for a stapler's beak. Background Technology

[0002] In minimally invasive laparoscopic surgery, the use of laparoscopic staplers often presents challenges when encountering narrow tissue gaps, limiting their usability. Current techniques improve the stapler's blunt dissection capability in these gaps by adding a narrow, hooked head to the anvil, and guide the target tissue into the stapler's suturing area, facilitating the surgeon's work on delicate tissues. However, the hooked structure is less convenient than the more common straight structure when suturing large tissues such as the lungs or stomach, or in open surgical areas. Furthermore, current staplers often have the anvil and hook structure integrally molded or welded together. This design fails to meet the surgeon's operational needs when multiple cross-cutting and anastomosing procedures are required for separating narrow tissues and cutting and suturing large tissues, reducing the flexibility and practicality of the procedure.

[0003] For example, a Chinese utility model patent discloses a clamp assembly and a surgical stapler (application number: 202420208156.8). The distal end of the clamp in this utility model includes a guide surface inclined towards the bottom surface, or the distal end of the clamp includes an upwardly curved beak-like portion. This design makes it easier for the distal end of the staple cartridge to enter blood vessels and interstitial spaces.

[0004] Although the invention makes it easier to enter blood vessels and tissue spaces by setting a rotatable beak, it still does not solve the problem that it is not easy to disassemble and reassemble, making it unsuitable for various surgical occasions. Summary of the Invention

[0005] The purpose of this utility model is to address the above-mentioned problems by providing a mounting and fitting structure for the stapler's nozzle, so as to facilitate the disassembly and installation of the stapler's nozzle and provide better stability in the installed state.

[0006] This utility model includes an eagle beak body and an anvil; one end of the eagle beak body is inserted into the anvil; this utility model provides a connecting element, the eagle beak body has a receiving space, the anvil has a limiting space, one end of the connecting element enters the receiving space and the other end enters the limiting space, and at least one of the receiving space or the limiting space is detachably and fixedly connected to the connecting element, and all three have a part that receives the gravity transmission of the other two, so that the eagle beak body, the anvil and the connecting element interfere with each other.

[0007] Preferably, the connecting element includes an elastic connecting arm, the receiving space is a receiving groove, and the elastic connecting arm forms an interference fit with the receiving groove through elasticity.

[0008] Preferably, the connecting element includes a stop arm, and the limiting space is a groove at the bottom of the abutment, into which the stop arm is fitted.

[0009] Preferably, there are two elastic connecting arms and receiving grooves, which are symmetrical from left to right.

[0010] Preferably, it also includes an eagle hook connected to one end of the eagle beak body, and the anvil includes a slot into which the eagle hook is inserted.

[0011] Preferably, the hooks are two symmetrical hooks that are elastic and tend to expand to both sides after being inserted into the slot.

[0012] Preferably, the receiving groove includes a positioning space, and the elastic connecting arm is provided with a positioning protrusion, which is inserted into the positioning space.

[0013] Preferably, the positioning space is an arc-shaped groove with an elastic limiting protrusion. The positioning protrusion can squeeze the elastic limiting protrusion to continue moving under the application of external force. The elastic limiting protrusion and the side wall of the arc-shaped groove form a horizontal clamping space. The horizontal clamping space clamps the protrusion in the horizontal state of the elastic connecting arm.

[0014] Preferably, the hook has a guide portion whose volume gradually decreases from the main body of the eagle's beak.

[0015] Preferably, the groove is an arc-shaped groove; correspondingly, the stop arm is an annular structure.

[0016] Compared with existing technologies, the advantages of this utility model are: This invention securely connects the beak and the anvil by embedding connecting elements into the space between the beak and the anvil and stacking the three together in pairs, causing them to interfere with each other. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 for Figure 1 Enlarged view of a specific area; Figure 3 A schematic diagram of the eagle's beak and hook; Figure 4 This is a schematic diagram of the connecting elements; Figure 5 Schematic diagram of the anvil. Figure 6 for Figure 5 Another perspective illustration; Figure 7 This is a schematic diagram showing the process before the connecting element of this utility model is installed; Figure 8 This is a cross-sectional schematic diagram of the present invention; Figure 9 for Figure 8 Enlarged image; In the figure: 1. Eagle beak body, 2. Anvil seat, 3. Connecting element, 31. Elastic connecting arm, 32. Stop arm, 4. Eagle hook, 11. Accommodating space, 111. Accommodating groove, 21. Limiting space, 211. Groove, 22. Connecting slot, 1111. Positioning space, 1112. Elastic limiting protrusion, 1113. Horizontal clamping space, 1113. Positioning protrusion, 311. Guide part, 41. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] This utility model is a staple cartridge assembly, such as Figure 1-6 As shown, it includes a beak body 1 and an anvil 2; one end of the beak body 1 is inserted into the anvil 2; the present invention uses a connecting element 3, the beak body 1 is provided with a receiving space 11, the anvil 2 is provided with a limiting space 21, one end of the connecting element 3 enters the receiving space 11 and the other end enters the limiting space 21, at least one of the receiving space 11 or the limiting space 21 is detachably and fixedly connected to the connecting element 3, and all three have a part that receives the gravity transmission of the other two, so that the beak body 1, the anvil 2 and the connecting element 3 interfere with each other.

[0020] In use, one specific implementation process of this utility model is as follows: Figure 1 As shown, the left end of the connecting element 3 is inserted into the receiving space 11 of the eagle beak body 1 and fixed, while the right end enters the bottom of the limiting space 21. In this way, the eagle beak body 1, the anvil 2 and the connecting element 3 interfere with each other and are not easy to come out.

[0021] like Figure 4 As shown, the connecting element 3 includes an elastic connecting arm 31, such as... Figure 3 As shown, the receiving space 11 is a receiving groove 111, and the elastic connecting arm 31 forms an interference fit with the receiving groove 111 through elastic force. It is easy to imagine that the elastic connecting arm 31 can be bent outward and inserted into the side of the receiving groove 111, and then released by elastic force to be tightly fastened in the receiving groove 111.

[0022] Preferred, such as Figure 4 As shown, the connecting element 3 includes a stop arm 32, and the limiting space 21 is a groove 211 at the bottom of the abutment seat 2, and the stop arm 32 is fitted into the groove 211.

[0023] Since there are two elastic connecting arms 31 and two receiving grooves 111 that are symmetrical, it is easy to imagine that the distance between the two elastic connecting arms 31 is less than the width of the inner wall of the two receiving grooves 111.

[0024] Preferred, such as Figure 3 , 8 As shown, it also includes an eagle hook 4 connected to one end of the eagle beak body 1. The anvil 2 includes a slot 22, and the eagle hook 4 is inserted into the slot 22 for further connection.

[0025] Preferably, the hooks 4 are two symmetrical hooks that are elastic and tend to expand to both sides after being inserted into the slot 22 to form an elastic compression.

[0026] Preferred, such as Figure 3 As shown, the receiving groove 111 includes a positioning space 1111, such as Figure 4 As shown, the elastic connecting arm 31 is provided with a positioning protrusion 311, which is inserted into the positioning space 1111. That is, based on the elastic clamping, the connection of the connecting element 3 to the end of the beak body 1 is further fixed by inserting it into the positioning space 1111.

[0027] Preferred, such as Figure 3 , 7 As shown, the positioning space 1111 is an arc-shaped groove with an elastic limiting protrusion 1112. When an external force is applied, the positioning protrusion 311 can squeeze the elastic limiting protrusion 1112 to continue moving. The elastic limiting protrusion 1112 and the side wall of the arc-shaped groove form a horizontal clamping space 1113. The horizontal clamping space 1113 clamps the protrusion of the elastic connecting arm 31 in a horizontal state.

[0028] Preferred, such as Figure 3 , 9 As shown, the eagle hook 4 has a guide portion 41 whose volume gradually decreases from the eagle beak body 1.

[0029] Preferably, the groove 211 is an arc-shaped groove; correspondingly, the stop arm 32 is an annular structure.

[0030] The working principle of this embodiment is as follows: First, the hook 4 is inserted into the slot 22 of the anvil 2. The presence of the guide part 41 makes it easier to insert. The elasticity of the hook 4 causes it to press against the walls of the slot 22 on both sides to complete the first layer of fixation. Immediately afterwards, the elastic connecting arm 31 of the connecting element 3 is opened and snapped into the receiving groove 111, and the positioning protrusion 311 is inserted into the positioning space 1111. At this time, due to gravity, the connecting element 3 undergoes a change in position. Figure 7 Rotating in the indicated state, pressing hard on the stop arm 32 of the connecting element 3, at this time, the positioning protrusion 311 can squeeze the elastic limiting protrusion 1112 under the applied external force to continue moving. After passing the elastic limiting protrusion 1112, the connecting element 3 is in a horizontal state. At this time, the positioned protrusion 311 is fixed by the horizontal clamping space 1113, and the stop arm 32 is also embedded into the groove 211 at the bottom of the anvil seat 2 to complete the installation. Figure 1 , 2As shown, the connecting element 3 is located at the bottom of the anvil seat 2, and is installed in the middle of the beak body 1 through the elastic connecting arm 31 and the positioning protrusion 311. The beak body 1 is then superimposed on the anvil seat 2 by plugging it in. Finally, the beak body 1, the anvil seat 2 and the connecting element 3 all have parts that receive the gravity transmission of the other two, but the gravity of the three will cancel each other out. That is, all three have parts that receive the gravity transmission of the other two. For example, the connecting element 3's stop arm 32 receives the gravity of the anvil seat 2, the elastic connecting arm 31 bears the gravity of the beak body 1, and the elastic connecting arm 31 transmits the gravity to the beak body 1 below the receiving groove 111. The beak body 1 is also partially pressed on the anvil seat 2, thereby completing the firm connection between the beak body 1 and the anvil seat 2.

[0031] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0032] Although this document frequently uses terms such as eagle beak body 1, anvil seat 2, connecting element 3, elastic connecting arm 31, stop arm 32, eagle hook 4, receiving space 11, receiving groove 111, limiting space 21, groove 211, connecting slot 22, positioning space 1111, elastic limiting protrusion 1112, horizontal clamping space 1113, positioning protrusion 311, and guide part 41, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would contradict the spirit of this utility model.

Claims

1. An anastomat beak mounting fitting structure, comprising a beak main body (1) and a nail abutting seat (2); one end of the beak main body (1) is inserted into the nail abutting seat (2); characterized in that: It also includes a connecting element (3), the beak body (1) is provided with a receiving space (11), the anvil (2) is provided with a limiting space (21), one end of the connecting element (3) enters the receiving space (11) and the other end enters the limiting space (21), at least one of the receiving space (11) or the limiting space (21) is detachably and fixedly connected to the connecting element (3), and all three have a part that receives the gravity transmission of the other two, so that the beak body (1), the anvil (2) and the connecting element (3) interfere with each other.

2. The stapler anvil mounting engagement structure of claim 1, wherein: The connecting element (3) includes an elastic connecting arm (31), the receiving space (11) is a receiving groove (111), and the elastic connecting arm (31) forms an interference fit with the receiving groove (111) through elasticity.

3. The stapler anvil mounting engagement structure of claim 1, wherein: The connecting element (3) includes a stop arm (32), and the limiting space (21) is a groove (211) at the bottom of the abutment seat (2), and the stop arm (32) is fitted into the groove (211).

4. The stapler anvil mounting engagement structure of claim 2, wherein: The elastic connecting arm (31) and the receiving groove (111) are two in number and are symmetrical from left to right.

5. The stapler anvil mounting engagement structure of claim 1, wherein: It also includes an eagle hook (4) connected to one end of the eagle beak body (1), the anvil (2) includes a slot (22), and the eagle hook (4) is inserted into the slot (22).

6. The anastomosis device beak mounting and mating structure as described in claim 5, characterized in that: The hooks (4) are two symmetrical hooks that are elastic and tend to expand to both sides after being inserted into the slot (22).

7. The stapler anvil mounting engagement structure of claim 2, wherein: The receiving groove (111) includes a positioning space (1111), and the elastic connecting arm (31) is provided with a positioning protrusion (311), which is inserted into the positioning space (1111).

8. The stapler anvil mounting mating structure of claim 7, wherein: The positioning space (1111) is an arc-shaped groove with an elastic limiting protrusion (1112). The positioning protrusion (311) can squeeze the elastic limiting protrusion (1112) under the application of external force to continue moving. The elastic limiting protrusion (1112) and the side wall of the arc-shaped groove form a horizontal clamping space (1113). The horizontal clamping space (1113) clamps the protrusion in the horizontal state of the elastic connecting arm (31).

9. The stapler anvil mounting mating structure of claim 6, wherein: The hook (4) has a guide part (41) whose volume gradually decreases from the main body (1) of the beak.

10. The stapler anvil mounting engagement structure of claim 3, wherein: The groove (211) is an arc-shaped groove; correspondingly, the stop arm (32) is an annular structure.

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