Medical L-shaped airway stent
By designing an integrated L-shaped airway stent and memory metal stent, the multiple surgeries and slippage problems of existing stents during treatment at the trine of the airway are solved, and the stability and convenient removal of the stent is achieved, improving the comfort and safety of use.
Patent Information
- Application Number
- CN202421806317.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-07-29
AI Technical Summary
The existing airway stent requires multiple surgeries and is prone to slip and dislocation when treating the trine of the airway, resulting in an increased safety risk.
A medical L-shaped airway bracket is designed to integrate the main bracket and the side bracket through the connecting bracket, and a memory metal bracket is used to adjust the bending degree. At the same time, the magnet and hook claw structure of the endoscopic mirror body are used to facilitate the extraction of the bracket when the bracket is removed.
It improves the comfort and installation convenience of the stent, reduces the number of surgeries, prevents slippage and displacement, enhances safety, and improves removal efficiency.
Smart Images
Figure CN223054860U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of airway stents, in particular to a medical L-shaped airway stent. Background Technique
[0002] An airway stent is a medical device used to treat airway stenosis or obstruction. It is usually made of metal or polymer materials and has certain support and flexibility. It can expand the narrowed airway and improve ventilation function. When using an airway stent, a doctor will select a suitable stent type and size according to the specific situation of the patient and place it at the airway stenosis site through tools such as an endoscope.
[0003] Airway stents have many advantages in tracheal treatment. Tracheal stents can effectively expand the narrowed airway, maintain airway patency, and improve respiratory function. At the same time, the application scope of tracheal stents is relatively wide and can be used for airway stenosis at different sites and degrees. In addition, the operation of installing an airway stent is simple and can be easily placed and adjusted through tools such as an endoscope.
[0004] When treating the airway trifurcation with existing tracheal stents, it usually requires two straight stents to be combined. Multiple straight stents require multiple surgeries, which will increase the surgical risk. Moreover, the straight stents are prone to slipping and displacement at the airway trifurcation, thus posing a hazard to the safety of patients. For this reason, a medical L-shaped airway stent is proposed to solve the above problems. Content of the Utility Model
[0005] In order to make up for the above deficiencies, the utility model provides a medical L-shaped airway stent, aiming to improve the problems that when treating the airway trifurcation in the prior art, two straight stents need to be combined, resulting in multiple surgeries and stent slipping and displacement.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0007] A medical L-shaped airway stent includes a main stent. One end of the main stent is fixedly connected with a connecting stent. One side of the connecting stent is fixedly connected with a side stent. One side of the connecting stent is fixedly connected with a second protective rubber ring. Both sides of the main stent are fixedly connected with a first protective rubber ring. Both sides of the side stent are fixedly connected with a second protective rubber ring. One side of the connecting stent is fixedly connected inside one of the first protective rubber rings. The other side of the connecting stent is fixedly connected inside one of the second protective rubber rings. The outer wall of the connecting stent is fixedly connected with a shape memory metal frame. One side of the shape memory metal frame is fixedly connected inside one of the first protective rubber rings. The other side of the shape memory metal frame is fixedly connected inside one of the second protective rubber rings. Both sides of the connecting stent are fixedly connected with protective rubber strips. Both sides of the shape memory metal frame are fixedly connected inside the two protective rubber strips;
[0008] As a further description of the above technical solution:
[0009] An endoscope body is arranged inside the main bracket, and fixing blocks are fixedly connected to both sides of the inner wall of the main bracket;
[0010] As a further description of the above technical solution:
[0011] Rotating shafts are rotatably connected to both sides inside the endoscope body;
[0012] As a further description of the above technical solution:
[0013] Hook grooves are formed inside the fixing blocks;
[0014] As a further description of the above technical solution:
[0015] One side of the outer wall of the rotating shaft is fixedly connected with a hook claw, and a second magnet is fixedly connected to one side of the hook claw;
[0016] As a further description of the above technical solution:
[0017] First magnets are fixedly connected to both sides of the inner wall of the main bracket;
[0018] As a further description of the above technical solution:
[0019] The outer wall of the first magnet is attached to the outer wall of the second magnet, and a reset assembly is arranged on one side of the hook claw, and the reset assembly is used for the hook claw to be placed inside the endoscope body;
[0020] As a further description of the above technical solution:
[0021] The reset assembly includes a spring, one end of the spring is fixedly connected to one side of the outer wall of the hook claw, and the other end of the spring is fixedly connected to the inner wall of the endoscope body.
[0022] The utility model has the following beneficial effects:
[0023] 1. In the utility model, first, the main bracket and the side bracket are connected by a connecting bracket to form an integrated design. At the same time, the memory metal frame facilitates the adjustment of the bracket curvature according to the trident tracheal path, solving the problems of multiple surgeries required for straight brackets and easy slippage and displacement of the brackets, and improving the comfort of using the bracket and the convenience of installation.
[0024] 2. In the utility model, there is a notch at the connection between the main bracket and the side bracket of the bracket, thus facilitating the avoidance of the problem that after the bracket is covered with a film, the other bronchus is blocked, resulting in the loss of respiratory function of the other bronchus of the patient, and improving the applicability of using the bracket.
[0025] 3. In the present utility model, first, the main stent is taken out through the endoscope body. When the endoscope body is inserted into the main stent, the magnet two can be attracted by the magnet one on the inner wall of the main stent, so as to drive the hook claw to rotate outward against the force of the spring. Therefore, when the endoscope body is pulled outwards, the hook claw can hook the fixing block, and thus the tracheal stent can be taken out, improving the convenience of taking out the tracheal stent. Description of the Drawings
[0026] Figure 1 is a three-dimensional schematic diagram of a medical L-shaped airway stent proposed by the present utility model;
[0027] Figure 2 is Figure 1 the enlarged view at A in
[0028] Figure 3 is a schematic cross-sectional structure diagram of the main stent of a medical L-shaped airway stent proposed by the present utility model;
[0029] Figure 4 is Figure 3 the enlarged view at B in
[0030] Legend:
[0031] 1. Main stent; 2. Endoscope body; 3. Side stent; 4. Protective rubber ring one; 5. Protective rubber ring two; 6. Connecting stent; 7. Memory metal frame; 8. Protective rubber strip; 9. Magnet one; 10. Fixing block; 11. Hook groove; 12. Magnet two; 13. Hook claw; 14. Spring; 15. Rotating shaft. Detailed Embodiments
[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0033] Refer to Figure 1 and Figure 2, an embodiment provided by the present utility model: a medical L-shaped airway stent, including a main stent 1, one end of the main stent 1 is fixedly connected with a connecting stent 6, one side of the connecting stent 6 is fixedly connected with a side stent 3, one side of the connecting stent 6 is fixedly connected with a second protective rubber ring 5, both sides of the main stent 1 are fixedly connected with a first protective rubber ring 4, both sides of the side stent 3 are fixedly connected with a second protective rubber ring 5, one side of the connecting stent 6 is fixedly connected inside one side of the first protective rubber ring 4, the other side of the connecting stent 6 is fixedly connected inside one side of the second protective rubber ring 5, the outer wall of the connecting stent 6 is fixedly connected with a shape memory metal frame 7, one side of the shape memory metal frame 7 is fixedly connected inside one side of the first protective rubber ring 4, the other side of the shape memory metal frame 7 is fixedly connected inside one side of the second protective rubber ring 5, both sides of the connecting stent 6 are fixedly connected with protective rubber strips 8, and both sides of the shape memory metal frame 7 are fixedly connected inside the two protective rubber strips 8;
[0034] Specifically, the tracheal stent firmly connects the main stent 1 and the side stent 3 through the connecting stent 6 to form an integrated L-shaped tracheal stent, effectively preventing it from slipping and shifting during use. The three are made of nitinol alloy, which has good support and biocompatibility, thus improving the stability and safety of the stent. At the same time, the first protective rubber ring 4 and the second protective rubber ring 5 are arranged at both ends of the main stent 1 and the side stent 3, which can effectively prevent the end faces of the second protective rubber ring 5 and the first protective rubber ring 4 from rubbing the film attached to the outside of the stent and avoid causing harm to the patient, further ensuring the safety of the patient. In addition, a shape memory metal frame 7 is arranged inside the connecting stent 6, which can conveniently adjust the bending degree of the stent according to the shapes and requirements of different tracheas. At the same time, the shape memory metal frame 7 also uses nitinol shape memory alloy, so that it has good shape memory effect and biocompatibility, enabling the stent to better adapt to different tracheas and improving the treatment effect. There is a notch at the connection of the main stent 1 and the side stent 3, which can avoid the stent blocking the other bronchus after being covered with a film, ensuring the patency of the airway and being beneficial to the patient's breathing.
[0035] Refer to Figure 3 And Figure 4 , an endoscope body 2 is arranged inside the main stent 1, fixed blocks 10 are fixedly connected to both sides of the inner wall of the main stent 1, rotating shafts 15 are rotatably connected to both sides inside the endoscope body 2, hook grooves 11 are formed inside the fixed blocks 10, a hook claw 13 is fixedly connected to one side of the outer wall of the rotating shaft 15, a second magnet 12 is fixedly connected to one side of the hook claw 13, first magnets 9 are fixedly connected to both sides of the inner wall of the main stent 1, and the outer walls of the first magnets 9 are attached to the outer walls of the second magnets 12. A reset assembly is arranged on one side of the hook claw 13, and the reset assembly is used for placing the hook claw 13 inside the endoscope body 2. The reset assembly includes a spring 14, one end of the spring 14 is fixedly connected to one side of the outer wall of the hook claw 13, and the other end of the spring 14 is fixedly connected to the inner wall of the endoscope body 2;
[0036] Specifically, when removing the stent, the endoscope body 2 can be inserted into the main stent 1. The endoscope body 2 is a part of a rigid tracheoscope and has strong support, thus facilitating the removal of the stent. When the front end of the endoscope body 2 passes through the fixing block 10, the second magnet 12 will be adsorbed by the first magnet 9, causing the second magnet 12 to fit with the first magnet 9. At this time, the second magnet 12 will drive the hook 13 to rotate around the rotating shaft 15, causing the hook 13 to open outward against the force of the spring 14. Then, when the endoscope body 2 is withdrawn from the main stent 1, the hook 13 will hook into the hook groove 11 opened inside the fixing block 10, thus facilitating the extraction of the stent through the endoscope body 2. This design is simple to operate, and the removal process is safer and more reliable. At the same time, this design also improves the efficiency of stent removal and reduces the operation time.
[0037] Working principle: The tracheal stent forms an integrated L-shaped tracheal stent by connecting the main stent 1 and the side stent 3 through the connecting stent 6, thereby preventing it from slipping and shifting during use. At the same time, protective rubber rings 4 and 5 are provided at both ends of the main stent 1 and the side stent 3 to prevent the end faces of the protective rubber ring 5 and the protective rubber ring 4 from abrading the film attached to the outside of the stent, thus endangering the safety of the patient. At the same time, a shape memory metal frame 7 is provided inside the connecting stent 6, which can facilitate the adjustment of the bending degree of the stent, so that the stent can adapt to different tracheas. A notch is provided at the connection between the main stent 1 and the side stent 3 to avoid blocking the other bronchus after the film is attached. When removing the stent, the endoscope body 2 can be inserted into the main stent 1. When the front end of the endoscope body 2 passes through the fixing block 10, the second magnet 12 will be adsorbed by the first magnet 9, so that the second magnet 12 fits with the first magnet 9. Then, the second magnet 12 will drive the hook 13 to rotate around the rotating shaft 15, causing the hook 13 to open outward against the force of the spring 14. Then, when the endoscope body 2 is withdrawn from the main stent 1, the hook 13 will hook into the hook groove 11 opened inside the fixing block 10, thus facilitating the extraction of the stent through the endoscope body 2.
[0038] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A medical L-shaped airway stent, comprising a main stent (1), characterized in that: One end of the main bracket (1) is fixedly connected with a connecting bracket (6). One side of the connecting bracket (6) is fixedly connected with a side bracket (3). One side of the connecting bracket (6) is fixedly connected with a second protective rubber ring (5). Both sides of the main bracket (1) are fixedly connected with a first protective rubber ring (4). Both sides of the side bracket (3) are fixedly connected with a second protective rubber ring (5). One side of the connecting bracket (6) is fixedly connected inside one of the first protective rubber rings (4). The other side of the connecting bracket (6) is fixedly connected inside one of the second protective rubber rings (5). The outer wall of the connecting bracket (6) is fixedly connected with a shape memory metal frame (7). One side of the shape memory metal frame (7) is fixedly connected inside one of the first protective rubber rings (4). The other side of the shape memory metal frame (7) is fixedly connected inside one of the second protective rubber rings (5). Both sides of the connecting bracket (6) are fixedly connected with protective rubber strips (8). Both sides of the shape memory metal frame (7) are fixedly connected inside the two protective rubber strips (8).
2. The medical L-shaped airway stent according to claim 1, characterized in that: An endoscope body (2) is arranged inside the main bracket (1). Fixed blocks (10) are fixedly connected to both sides of the inner wall of the main bracket (1).
3. The medical L-shaped airway stent according to claim 2, wherein: Rotating shafts (15) are rotatably connected to both sides inside the endoscope body (2).
4. The medical L-shaped airway stent according to claim 3, characterized in that: Hook grooves (11) are formed inside the fixed blocks (10).
5. The medical L-shaped airway stent according to claim 4, wherein: One side of the outer wall of the rotating shaft (15) is fixedly connected with a hook (13). One side of the hook (13) is fixedly connected with a second magnet (12).
6. The medical L-shaped airway stent according to claim 5, wherein: First magnets (9) are fixedly connected to both sides of the inner wall of the main bracket (1).
7. The medical L-shaped airway stent according to claim 6, characterized in that: The outer wall of the first magnet (9) is attached to the outer wall of the second magnet (12). A reset assembly is arranged on one side of the hook (13). The reset assembly is used for placing the hook (13) inside the endoscope body (2).
8. The medical L-shaped airway stent according to claim 7, characterized in that: The reset assembly includes a spring (14). One end of the spring (14) is fixedly connected to one side of the outer wall of the hook (13). The other end of the spring (14) is fixedly connected to the inner wall of the endoscope body (2).