Bent anastomat

Abstract

The utility model relates to the technical field of medical instruments, and particularly discloses a bent anastomat which comprises an anastomat body and a nail anvil head, an excitation handle is arranged on the anastomat body, one end of the anastomat body is provided with a composite tube, the composite tube is connected with a nail anvil control rod, and the nail anvil control rod is detachably connected with the nail anvil head. A control knob used for controlling the nail anvil control rod is arranged on the anastomat body, the nail anvil control rod comprises a flexible control part connected with the composite tube and a connecting rod connected with the nail anvil head, and the connecting rod is detachably connected with the nail anvil head. Through the shape design of a first clamping block and a first clamping groove in the flexible control part and the shape design of a second clamping block and a second clamping groove in the flexible control part, better matching can be achieved, rotating connection between adjacent joints can be achieved conveniently, meanwhile, rotating flexibility and smoothness are guaranteed, damage to a patient in the using process can be reduced through stable connection and smooth rotation, and the use safety of the patient is improved. And the safety and the reliability of the operation are improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a curved anastomosis device. Background Technology

[0002] The stapler, the world's first suture device, has been used for gastrointestinal anastomosis for nearly a century, but it wasn't until 1978 that the tubular stapler became widely used in gastrointestinal surgery. Staplers are generally classified as disposable or reusable, and imported or domestically produced. They are medical devices that replace traditional manual suturing. Due to advancements in modern technology and improvements in manufacturing techniques, clinically used staplers are reliable, easy to use, and provide a tight, appropriate fit. Their advantages, particularly their rapid suturing, ease of operation, and minimal side effects and surgical complications, have enabled the removal of previously inoperable tumors.

[0003] Most existing staplers have limited angle adjustment ranges, making it difficult to meet the diverse angle requirements in complex surgeries. Although some existing technologies have added flexible control units, most of them use a single locking block and locking groove for steering adjustment, which lacks sufficient stability and limits the flexibility and controllability of the flexible control unit.

[0004] The purpose of this invention is to provide a curved anastomosis device to solve the problems mentioned in the background art. Utility Model Content

[0005] To achieve the above objectives, this utility model provides a curved stapler, including a stapler body and an anvil head. The stapler body is provided with an activation handle, which is hinged to one end of the stapler body and is inclined. The other end of the stapler body is provided with a composite tube, which is connected to an anvil control rod. The anvil control rod is detachably connected to the anvil head. The stapler body is provided with a control knob for controlling the anvil control rod. The anvil control rod includes a flexible control part connected to the composite tube and a connecting rod connected to the anvil head. The connecting rod is detachably connected to the anvil head.

[0006] The flexible control unit is composed of multiple snake-bone segments, which are movably connected. The two ends of the flexible control unit are respectively connected to a first segment and a second segment. The first segment is connected to the composite tube, and the second segment is connected to the connecting rod.

[0007] One end of the snake bone segment is provided with a snap-fit ​​block, and the adjacent snake bone segment is provided with a snap-fit ​​groove that cooperates with the snap-fit ​​block. The snap-fit ​​block is rotatably installed in the snap-fit ​​groove.

[0008] The first snap-fit ​​groove is provided with snap-fit ​​blocks 2 on both sides. The first snap-fit ​​block is provided with snap-fit ​​grooves 2 on both sides that match the second snap-fit ​​block. The second snap-fit ​​block is movably installed in the second snap-fit ​​groove. When the snap-fit ​​is engaged, there is a movable cavity between the adjacent snake bone segments. The movable cavity is connected to the ends of the second snap-fit ​​block and the second snap-fit ​​groove.

[0009] As a further improvement of this utility model, the composite tube is composed of a threaded tube, a braided mesh, and an FEP tube. One end of the threaded tube is fixedly connected to the end of the anastomosis device body. The braided mesh and the FEP tube are stacked and installed on the inner wall of the threaded tube. The end of the flexible control part is fixedly connected to the end of the threaded tube.

[0010] As a further improvement of this utility model, the snake joint is also symmetrically provided with wire holes, and the wire holes on each snake joint are arranged one-to-one. Multiple positioning sleeves are symmetrically provided on the inner wall of the FEP tube. The control knob is connected to a control wire rope. The end of the control wire rope passes through each positioning sleeve in the FEP tube and the wire hole on each snake joint in sequence, and is fixedly connected to the positioning sleeve and each wire hole. The control knob adjusts the rotation of the threaded tube and the snake joint by controlling the control wire rope.

[0011] As a further improvement of this utility model, the control wire rope is made of memory metal wire, and the memory metal wire is symmetrically arranged with the symmetrically arranged snap-fit ​​cross-shaped wire.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention utilizes a stapling control rod composed of multiple snake-bone segments to achieve arbitrary angle adjustment of the stapler within a certain range, significantly improving surgical flexibility and precision. The snake-bone design of the stapling control rod's turning head makes the stapler more stable and reliable during angle adjustment, preventing accidental rotation during surgery. The design of the threaded tube and snake-bone segments simplifies angle adjustment, reducing the learning curve and ease of use for medical personnel. Furthermore, the movable cavity design limits the turning angle between each snake-bone segment when the locking block turns within the locking groove, preventing excessive turning. To prevent harm to the patient's safety, the design incorporates two parts: a locking block and a locking groove. These two parts, a locking block and a locking groove, increase the contact area between adjacent serpentine joints, thereby improving the stability and strength of the connection. This effectively prevents the joints from separating due to excessive bending angles or forces. The shape design of the locking block and locking grooves ensures a better fit, facilitating rotational connection between adjacent joints while maintaining flexibility and smoothness of rotation. Stable connection and smooth rotation reduce the risk of injury to the patient during use, improving the safety and reliability of the surgery. Attached Figure Description

[0014] Figure 1 This is a front view of the present invention;

[0015] Figure 2 This is a diagram showing the separation of the anvil control rod and composite tube from the main body of the anastomosis device of this utility model;

[0016] Figure 3 This is a separate diagram of the composite tube, anvil control rod, and connecting rod of this utility model;

[0017] Figure 4 This is a diagram showing the separation of the snake-like segment from the first and second segment portions of the present invention.

[0018] Figure 5 This is a cross-sectional view of the snake bone segment of this utility model, separated from the first and second bone segments.

[0019] In the diagram: 1. Anastomosis device body; 11. Activation handle; 12. Control knob;

[0020] 2. Anvil control rod; 21. Flexible control section; 211. Snake joint; 212. First joint; 213. Second joint; 214. Snap-fit ​​block one; 215. Snap-fit ​​groove one; 216. Wire hole; 217. Control wire rope; 218. Snap-fit ​​block two; 219. Snap-fit ​​groove two; 2110. Movable cavity; 22. Connecting rod;

[0021] 3. Composite pipe; 31. Threaded pipe; 32. FEP pipe; 33. Positioning sleeve;

[0022] 4. Nail the anvil head. Detailed Implementation

[0023] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Example 1:

[0027] Please see Figure 1-5 This utility model provides a curved stapler, including a stapler body 1 and an anvil head 4. The stapler body 1 is provided with an activation handle 11, which is hinged to one end of the stapler body 1 and is inclined. The other end of the stapler body 1 is provided with a composite tube 3, which is connected to an anvil control rod 2. The anvil control rod 2 is detachably connected to the anvil head 4. The stapler body 1 is provided with a control knob 12 for controlling the anvil control rod 2. The anvil control rod 2 includes components connected to the composite tube 4. The flexible control part 21 connected to the anvil head 4 and the connecting rod 22 connected to the anvil head 3 are detachably connected. The anvil head 4 is detachably connected to the connecting rod 22. The trigger handle 11 is set on the anvil body 1 and connected to the trigger device to trigger the release and cutting action of the staples. Furthermore, the anvil control rod 2 is provided with a flexible control part 21. The flexible control part 21 of the anvil control rod 2 can be controlled by the control knob 12 to drive the anvil head 4 to turn, thereby realizing the multi-angle turning of the anvil control rod 2 and the anvil head 4, which is beneficial to the surgical operation.

[0028] The flexible control unit 21 is composed of multiple snake-bone segments 211, which are movably connected. The two ends of the flexible control unit 21 are respectively connected to a first segment 212 and a second segment 213. The first segment 212 is connected to the composite tube 3, and the second segment 213 is connected to the connecting rod 22. The snake tube composed of multiple snake-bone segments 211 can be turned by controlling the control knob 12. The anvil control rod 2 is composed of several snake-bone segments 211, each of which is movably connected, so that the entire anvil control rod 2 can be bent arbitrarily within a certain range. The threaded tube 31 is provided at the end of the snake tube and corresponds to the joint of the snake bone. By rotating the threaded tube 31, the joint of the snake tube can be turned, thereby realizing the angle adjustment of the turning head.

[0029] One end of the snake bone segment 211 is provided with a snap-fit ​​block 214, and the adjacent snake bone segment 211 is provided with a snap-fit ​​groove 215 that cooperates with the snap-fit ​​block 214. The snap-fit ​​block 214 is rotatably installed in the snap-fit ​​groove 215. By setting the snap-fit ​​block 214 to be movably installed in the snap-fit ​​groove 215, it is convenient for the snake bone tube part formed by the snake bone segment 211 to make multi-angle turns.

[0030] The first snap-fit ​​groove 215 is further provided with snap-fit ​​blocks 218 on both sides. The first snap-fit ​​block 214 is provided with snap-fit ​​grooves 219 on both sides that match the second snap-fit ​​block 218. The second snap-fit ​​block 218 is movably installed in the second snap-fit ​​groove 219. In the snap-fit ​​state, a movable cavity 2110 is provided between adjacent snake joints 211. The movable cavity 2110 is connected to the ends of the second snap-fit ​​block 218 and the second snap-fit ​​groove 219 respectively. Through the provided snap-fit ​​blocks 218 and snap-fit ​​grooves 219, the turning between snake joints 211 can be more stable. At the same time, the movable cavity 2110 between snake joints 211 provides room for movement when turning and bending, which is beneficial for turning operations. Furthermore, through the design of the movable cavity 2110, the first snap-fit ​​block 215 can be more stable when turning between snake joints 211. 4. When turning within the locking groove 215, the turning angle between each serpentine segment is limited to prevent excessive turning from endangering the patient's safety. By locking the locking block 214 with the locking groove 215 and the locking block 218 with the locking groove 219, the contact area between adjacent serpentine segments can be increased, thereby improving the stability and firmness of the connection. This effectively prevents the segments from separating due to excessive bending angle or bending force. The shape design of the locking block 214 with the locking groove 215 and the locking block 218 with the locking groove 219 allows for better fit, facilitating the rotational connection between adjacent joints while ensuring the flexibility and smoothness of rotation. Stable connection and smooth rotation can reduce the damage to the patient during use and improve the safety and reliability of the operation.

[0031] Example 2:

[0032] Based on Embodiment 1, in this embodiment, as follows: Figure 3 As shown, the composite tube 3 is composed of a threaded tube 31, a braided mesh, and an FEP tube 32. One end of the threaded tube 31 is fixedly connected to the end of the anastomosis device body 1. The braided mesh and the FEP tube 32 are stacked and installed on the inner wall of the threaded tube 31. The end of the flexible control part 21 is fixedly connected to the end of the threaded tube 31.

[0033] In this embodiment, the threaded tube 31 in the composite tube 3 facilitates connection with the stapler body 1 and improves connection stability. The FEP tube 32 has extremely high chemical stability and excellent resistance to almost all chemicals. The FEP tube 32 can maintain good physical properties and mechanical strength in a wide temperature range of -80℃ to 200℃, without aging or toxicity. The addition of braided mesh further enhances the structural strength of the composite tube 3, making it more resistant to external pressure and load. At the same time, the flexible tube design of the composite tube 3, which facilitates its growth, greatly improves its flexibility during surgery, allowing the stapler to bend and turn more easily, thereby adapting to different surgical environments and operational needs. The flexible tube design allows the stapler to better adapt to the complex environment inside the patient's body, especially when it is necessary to bypass obstacles or perform delicate operations. This helps to improve the accuracy and success rate of the surgery. The flexible tube design also helps to reduce damage to the patient's tissues during surgery, thereby reducing patient pain and recovery time.

[0034] Example 3:

[0035] Based on Example 1, in this embodiment, as follows: Figure 2-5 As shown, the snake-bone joint 211 is also symmetrically provided with wire holes 216, and each wire hole 216 on the snake-bone joint 211 is provided in a one-to-one correspondence. Multiple positioning sleeves 33 are symmetrically provided on the inner wall of the FEP tube 32. The control knob 12 is connected to a control wire rope 217. The end of the control wire rope 217 passes sequentially through each positioning sleeve 33 inside the FEP tube 32 and the wire hole 216 on each snake-bone joint 211, and is aligned with the positioning sleeve 33 and each wire hole 216. 16. Fixed connection: The control knob 12 adjusts the rotation of the threaded tube 31 and the snake joint 211 by controlling the control wire rope 217. The snap-fit ​​block on each snake joint 211 snaps into the snap-fit ​​groove on the adjacent snake joint 211 to facilitate the installation of the snake joint 211. At the same time, the wire hole 216 is provided on the snake joint 211 to facilitate the connection with the control wire rope 217 connected to the control knob 12, thereby realizing the control knob 12 to operate the snake tube part formed by the snake joint 211.

[0036] The control wire 217 is made of shape memory metal wire, and the shape memory metal wire and the symmetrically arranged plug-in blocks form a cross shape.

[0037] In this embodiment, the memory metal wire can respond to the command of the control knob 12 to precisely adjust the shape and position of the composite tube 3 and the snake bone tube, improve the precision of the surgical operation, and enable the composite tube 3 and the snake bone tube to have better bending and recovery capabilities, so as to adapt to different surgical environments and operational needs. By controlling the memory metal wire through the control knob 12, the surgical operation process can be simplified and the surgical efficiency can be improved.

[0038] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A curved stapler, characterized in that: The device includes a stapler body (1) and an anvil head (4). The stapler body (1) is provided with an activation handle (11), which is hinged to one end of the stapler body (1) and is inclined. The other end of the stapler body (1) is provided with a composite tube (3), which is connected to an anvil control rod (2). The anvil control rod (2) is detachably connected to the anvil head (4). The stapler body (1) is provided with a control knob (12) for controlling the anvil control rod (2). The anvil control rod (2) includes a flexible control part (21) connected to the composite tube (3) and a connecting rod (22) connected to the anvil head (4). The connecting rod (22) is detachably connected to the anvil head (4). The flexible control unit (21) is composed of multiple snake joints (211), which are movably connected. The two ends of the flexible control unit (21) are respectively connected to a first joint (212) and a second joint (213). The first joint (212) is connected to the composite tube (3), and the second joint (213) is connected to the connecting rod (22). One end of the snake bone segment (211) is provided with a snap-fit ​​block (214), and the adjacent snake bone segment (211) is provided with a snap-fit ​​groove (215) that cooperates with the snap-fit ​​block (214). The snap-fit ​​block (214) is rotatably installed in the snap-fit ​​groove (215). The first snap-fit ​​groove (215) is provided with snap-fit ​​blocks (218) on both sides. The first snap-fit ​​block (214) is provided with snap-fit ​​grooves (219) on both sides that match the second snap-fit ​​block (218). The second snap-fit ​​block (218) is movably installed in the second snap-fit ​​groove (219). When in the snap-fit ​​state, there is also a movable cavity (2110) between the adjacent snake bone segments (211). The movable cavity (2110) is connected to the ends of the second snap-fit ​​block (218) and the second snap-fit ​​groove (219) respectively.

2. The curved stapler according to claim 1, characterized in that: The composite tube (3) is composed of a threaded tube (31), a braided mesh, and an FEP tube (32). One end of the threaded tube (31) is fixedly connected to the end of the anastomosis device body (1). The braided mesh and the FEP tube (32) are stacked and installed on the inner wall of the threaded tube (31). The end of the flexible control part (21) is fixedly connected to the end of the threaded tube (31).

3. A curved stapler according to claim 2, characterized in that: The snake joint (211) is also symmetrically provided with wire holes (216), and each of the snake joints (211) has a corresponding wire hole (216). The inner wall of the FEP tube (32) is symmetrically provided with multiple positioning sleeves (33). The control knob (12) is connected to a control wire rope (217). The end of the control wire rope (217) passes through each of the positioning sleeves (33) in the FEP tube (32) and the wire hole (216) on each snake joint (211) in sequence, and is fixedly connected to the positioning sleeves (33) and each wire hole (216). The control knob (12) adjusts the direction of the threaded tube (31) and the snake joint (211) by controlling the control wire rope (217).

4. A curved stapler according to claim 3, characterized in that: The control wire (217) is made of shape memory metal wire, and the shape memory metal wire and the symmetrically arranged snap-fit ​​block (214) form a cross shape.

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