Line grasping assembly of abdominal wall anastomat

Abstract

The utility model relates to an abdominal wall anastomat line grabbing assembly which comprises an upper elastic hook and a lower elastic hook, the upper elastic hook and the lower elastic hook are both of a thick steel sheet structure, one end of the upper elastic hook and one end of the lower elastic hook are connected to a connecting rod at the same time, and the end, away from the connecting rod, of the upper elastic hook is bent towards the direction of the lower elastic hook to form an upper bent hook part. The end, away from the connecting rod, of the lower elastic hook is bent towards the upper elastic hook to form a lower hook portion, the length of the upper elastic hook is larger than that of the lower elastic hook, a containing groove is formed in the face, close to the lower elastic hook, of the upper elastic hook, the lower hook portion of the lower elastic hook is clamped in the containing groove, and the suture is clamped between the lower hook portion and the inner wall of the containing groove. The suture grasping device has the advantages that it is guaranteed that the suture grasping assembly can stably grasp the suture, and potential safety hazards brought to an operation are reduced.

Description

Technical Field

[0001] The utility model relates to the field of abdominal wall staplers, in particular to a line grabbing component of an abdominal wall stapler. Background Art

[0002] The traditional suturing method for endoscopic surgical incisions uses curved needle suturing, using hemostats to find the peritoneum from the outside of the abdominal wall, then lifting the peritoneum and using needle holders to hold the curved needle for suturing. Since the incision of endoscopic minimally invasive surgery is similar to the shape of a small deep hole and is relatively small, and the curved needle has a natural curvature, it is difficult to complete the suturing of the peritoneal layer. In order to shorten the incision suturing time, shorten the overall operation time, improve the operation efficiency, reduce the occurrence of incision bleeding and incisional hernia, and provide a more effective guarantee for the healing of the incision, an abdominal wall stapler has appeared on the market.

[0003] In the related art, the abdominal wall stapler includes a handle, a reset spring and a sliding module are arranged inside the handle, one end of the reset spring is fixed at the inner bottom wall of the handle, the end of the reset spring away from the inner bottom wall of the handle is connected to the sliding module, hand grips are symmetrically arranged on both sides of the sliding module, and sliding grooves for the hand grips of the sliding module to slide are provided on the upper and lower sides of the handle, the hand grips pass through the sliding grooves and extend to the outside of the handle, the end of the handle away from the reset spring is fixedly connected to the needle tube, a connecting rod is slidably arranged inside the needle tube, one end of the connecting rod is connected to the sliding module, the other end of the connecting rod is connected to the wire grabbing assembly, and the end of the wire grabbing assembly away from the connecting rod extends out of the needle tube.

[0004] See attached Figure 1 The thread grabbing assembly includes an upper elastic hook 2 and a lower elastic hook 3 made of steel wire. The upper elastic hook 2 and the lower elastic hook 3 have the same length. The upper elastic hook 2 and the lower elastic hook 3 move in directions away from each other by their own elastic force without the action of external force. The upper elastic hook 2 is bent with an upper hook portion 21 toward the lower elastic hook 3, and the lower elastic hook 3 is bent with a lower hook portion 31 toward the upper elastic hook 2. When the connecting rod 1 is axially pulled into the needle tube 11, the ends of the upper hook portion 21 and the lower hook portion 31 abut against each other to grab the suture. When the connecting rod 1 extends out of the needle tube 11, the upper hook portion 21 and the lower hook portion 31 are automatically separated to loosen the suture.

[0005] With regard to the above-mentioned related technologies, during the operation, since the upper elastic hook and the lower elastic hook of the thread grasping assembly are both steel wire structures, when grasping the surgical sutures, the upper curved hook and the lower curved hook will be deformed when subjected to a large pulling force of the sutures. After the upper curved hook and the lower curved hook are gradually straightened, they lose the limiting force on the sutures, causing the thread grasping assembly to fail in its function of grasping the surgical sutures, posing a safety hazard to the operation. Utility Model Content

[0006] In order to ensure that the thread grasping assembly can stably grasp the suture and reduce the potential safety hazards brought to the operation, the present application provides an abdominal wall stapler thread grasping assembly.

[0007] The present application provides an abdominal wall stapler wire grasping assembly adopts the following technical solution:

[0008] A thread grasping assembly of an abdominal wall stapler comprises an upper elastic hook and a lower elastic hook, both of which are made of thick steel sheet structure, one end of the upper elastic hook and one end of the lower elastic hook are simultaneously connected to a connecting rod, an upper curved hook portion is bent toward the lower elastic hook at one end of the upper elastic hook away from the connecting rod, and a lower curved hook portion is bent toward the upper elastic hook at one end of the lower elastic hook away from the connecting rod, the length of the upper elastic hook is greater than that of the lower elastic hook, a receiving groove is provided on a surface of the upper elastic hook close to the lower elastic hook, the lower curved hook portion of the lower elastic hook is clamped in the receiving groove, and a suture clamp is provided between the lower curved hook portion and the inner wall of the receiving groove.

[0009] Preferably, the length of the accommodating groove is greater than the length of the downwardly bent hook portion.

[0010] Preferably, a first cambered surface is provided at one end of the downwardly curved hook portion close to the connecting rod, and the first cambered surface is located at a side of the downwardly curved hook portion away from the accommodating groove.

[0011] Preferably, a second cambered surface is provided at one end of the upward curved hook away from the connecting rod, and two ends of the second cambered surface extend to two ends of the upward curved hook in a radial direction.

[0012] Preferably, a third cambered surface is provided at one end of the upper hook portion close to the connecting rod, and the third cambered surface is located on the side of the upper hook portion away from the accommodating groove, and the third cambered surface is connected to the second cambered surface in a circular arc transition.

[0013] In summary, the present application includes at least one of the following beneficial technical effects:

[0014] 1. When grabbing the suture, the lower hook of the lower elastic hook is embedded in the receiving groove of the upper elastic hook to lock the suture firmly. The suture is clamped by the lower hook and the inner wall of the receiving groove and is not easy to move, thereby reducing the pulling force of the suture on the lower hook and the upper hook. The upper hook and the lower hook are both thick. Even if the pulling force of the suture is large, the upper hook and the lower hook are not easy to deform, ensuring that the thread grabbing assembly can stably grab the suture and reduce the safety hazards brought to the operation;

[0015] 2. When the thread grabbing assembly is inserted into the needle tube from the end of the handle, the first and second cambered surfaces are in contact with the inner wall of the handle, which improves the smoothness of the upper and lower elastic hooks entering the needle tube from the handle, making the assembly of the thread grabbing assembly more efficient;

[0016] 3. During the process of the thread grabbing assembly being retracted into the needle tube, the third yielding arc surface contacts the inner wall of the needle tube, thereby improving the smoothness of the process of the thread grabbing assembly being retracted into the needle tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a grabbing component in the prior art.

[0018] Figure 2 It is a schematic diagram of the structure of the abdominal wall stapler used to illustrate the overall structure of the abdominal wall stapler in the embodiment of the present application.

[0019] Figure 3 It is used to show in the embodiments of this application Figure 2 The enlarged structural diagram at A in the middle is a structural diagram of the thread grabbing assembly located inside the needle tube.

[0020] Figure 4 This is a structural schematic diagram for showing the connection relationship between the wire grabbing assembly and the connecting rod after the needle tube is hidden in the embodiment of the present application.

[0021] Figure 5 It is used to show in the embodiments of this application Figure 4 Schematic diagram of the enlarged structure at point B in the middle.

[0022] Explanation of the accompanying drawings: 1. connecting rod; 11; needle tube; 12. handle; 2. upper elastic hook; 21. upper curved hook portion; 3. lower elastic hook; 31. lower curved hook portion; 4. accommodating groove; 5. first convex arc surface; 6. second convex arc surface; 7. third convex arc surface. DETAILED DESCRIPTION

[0023] The following is combined with Figure 2-5 This application is described in further detail.

[0024] An embodiment of the present application discloses a wire grasping assembly of an abdominal wall stapler.

[0025] Reference Figure 2-5The abdominal wall stapler thread grasping assembly includes an upper elastic hook 2 and a lower elastic hook 3, both of which are made of thick steel sheet structure. One end of the upper elastic hook 2 and one end of the lower elastic hook 3 are connected to the connecting rod 1 at the same time. The end of the upper elastic hook 2 away from the connecting rod 1 is bent with an upper hook portion 21 toward the lower elastic hook 3, and the end of the lower elastic hook 3 away from the connecting rod 1 is bent with a lower hook portion 31 toward the upper elastic hook 2. The length of the upper elastic hook 2 is greater than that of the lower elastic hook 3. A receiving groove 4 is provided on a surface of the upper elastic hook 2 close to the lower elastic hook 3. The receiving groove 4 is arranged close to the upper hook portion 21. The lower hook portion 31 of the lower elastic hook 3 is clamped in the receiving groove 4, and the suture clamp is arranged between the lower hook portion 31 and the inner wall of the receiving groove 4. The length of the receiving groove 4 is greater than that of the lower hook portion 31, which improves the smoothness of the lower hook portion 31 being embedded in the receiving groove 4.

[0026] When grabbing the suture, the lower hook portion 31 of the lower elastic hook 3 is embedded in the accommodating groove 4 of the upper elastic hook 2 to lock the suture firmly. The suture is clamped by the lower hook portion 31 and the inner wall of the accommodating groove 4 and is not easy to move, thereby reducing the pulling force of the suture on the lower hook portion 31 and the upper hook portion 21. The upper hook portion 21 and the lower hook portion 31 both have thickness. Even when the pulling force of the suture is large, the upper hook portion 21 and the lower hook portion 31 are not easy to deform, ensuring that the thread grasping assembly can stably grasp the suture and reduce the safety hazards brought to the operation.

[0027] A first cambered surface 5 is disposed at one end of the downwardly curved hook portion 31 close to the connecting rod 1 , and the first cambered surface 5 is located at a side of the downwardly curved hook portion 31 away from the accommodating groove 4 .

[0028] A second cambered surface 6 is disposed at one end of the upper hook portion 21 away from the connecting rod 1 , and both ends of the second cambered surface 6 extend to both ends of the upper hook portion 21 in the radial direction.

[0029] When the thread grabbing assembly is inserted into the needle tube 11 from the end of the handle 12, the first and second cambered surfaces 5, 6 contact the inner wall of the handle 12, which improves the smoothness of the upper elastic hook 2 and the lower elastic hook 3 entering the needle tube 11 from the handle 12, making the assembly of the thread grabbing assembly more efficient.

[0030] A third cambered surface 7 is disposed at one end of the upper hook portion 21 close to the connecting rod 1 , and the third cambered surface 7 is located at a side of the upper hook portion 21 away from the accommodating groove 4 , and the third cambered surface 7 is connected to the second cambered surface 6 in a circular arc transition.

[0031] When the thread grabbing assembly is retracted into the needle tube 11 , the third cambered surface 7 contacts the inner wall of the needle tube 11 , thereby improving the smoothness of the process of retracting the thread grabbing assembly into the needle tube 11 .

[0032] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An abdominal wall stapler wire grasping assembly, characterized in that: The invention comprises an upper elastic hook (2) and a lower elastic hook (3), both of which are made of thick steel sheets. One end of the upper elastic hook (2) and one end of the lower elastic hook (3) are simultaneously connected to a connecting rod (1). An upper curved hook portion (21) is bent at one end of the upper elastic hook (2) away from the connecting rod (1) toward the lower elastic hook (3). A lower curved hook portion (31) is bent at one end of the lower elastic hook (3) away from the connecting rod (1) toward the upper elastic hook (2). The length of the upper elastic hook (2) is greater than that of the lower elastic hook (3). A receiving groove (4) is provided on one surface of the upper elastic hook (2) close to the lower elastic hook (3). The lower curved hook portion (31) of the lower elastic hook (3) is clamped in the receiving groove (4). A suture clamp is provided between the lower curved hook portion (31) and the inner wall of the receiving groove (4).

2. The abdominal wall stapler thread grasping assembly according to claim 1, characterized in that: The length of the accommodating groove (4) is greater than the length of the downwardly bent hook portion (31).

3. The abdominal wall stapler thread grasping assembly according to claim 1, characterized in that: A first cambered surface (5) is provided at one end of the downwardly curved hook portion (31) close to the connecting rod (1), and the first cambered surface (5) is located on a side of the downwardly curved hook portion (31) away from the accommodating groove (4).

4. The abdominal wall stapler thread grasping assembly according to claim 1, characterized in that: A second cambered surface (6) is provided at one end of the upper hook portion (21) away from the connecting rod (1), and two ends of the second cambered surface (6) extend to two ends of the upper hook portion (21) in the radial direction.

5. The abdominal wall stapler thread grasping assembly according to claim 1, characterized in that: A third cambered surface (7) is provided at one end of the upper hook portion (21) close to the connecting rod (1), and the third cambered surface (7) is located on a side of the upper hook portion (21) away from the accommodating groove (4), and the third cambered surface (7) is connected to the second cambered surface (6) in a circular arc transition.

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