Clamp for supporting medical support pipe

Abstract

The invention relates to the technical field of medical equipment, and discloses a clamp for supporting a medical stent tube, which comprises a belt body folding type clamping mechanism and two pneumatic type contraction mechanisms. According to the clamp for supporting the medical support pipe, the first textile belt and the second textile belt which are folded in a staggered mode are used for clamping and fixing the medical pipe in a wrapping mode, and the good attaching effect is achieved, so that the clamping pressure intensity on the medical pipe in the unit area is reduced, and it is guaranteed that on the basis that the medical pipe is effectively fixed, the clamping effect is good. And in addition, the first textile belt and the second textile belt have the flexible clamping effect, and therefore the good energy absorption and vibration reduction effects are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a fixture for supporting medical stent tubes. Background Art

[0002] A medical stent is a metal mesh structure implanted into a diseased blood vessel site to improve the blood flow condition of the diseased site and support the blood vessel. Laser cutting has the advantages of simple process, high speed, small slit width, good incision parallelism, small surface roughness, high dimensional accuracy, and less workpiece deformation. It can accurately cut micro-parts with complex shapes, so it has become the main processing method for medical stent processing. Medical stents are generally implanted into the diseased part of the blood vessel through an interventional operation and finally fit with the inner wall of the blood vessel. Therefore, strict requirements are imposed on the surface finish of medical stents during processing.

[0003] For example, the Chinese patent with the publication number "CN202607102U" discloses "a fixture for supporting medical stent tubes". Its main structure includes a rotating shaft assembly installed on the operating table, a chuck installed at one end of the rotating shaft assembly, and a parallel two-finger clamping mechanism made of magnesium alloy with outstanding shock absorption performance. Among them, the parallel two-finger clamping mechanism is installed on the operating table, which includes a parallel two-finger clamp, a bushing, and a bushing seat for placing the bushing. This fixture for supporting medical stent tubes has the functions of absorbing and reducing vibration, reducing the vibration of the tube during cutting, and the cut stent meets the accuracy requirements put forward by customers. It solves the problems that the existing fixture for clamping stent tubes cannot absorb and reduce vibration well, and the stent tubes are easily worn, resulting in destructive damage that cannot be polished off by subsequent processes after cutting.

[0004] However, during the working process of the above-mentioned fixture for supporting medical stent tubes, the parallel two-finger clamping mechanism made of magnesium alloy is used to generate the energy absorption effect. Therefore, when the device contacts the tube, it is still a hard contact. Magnesium alloy is also a metal material, and its energy absorption effect on vibration is relatively limited. In addition, the device fixes the tube by clamping between two planes. Since medical tubes have low hardness and low surface compressive resistance, the clamping force of the two planes will be concentrated on the two contact lines, easily causing the medical tube to deform and resulting in waste products. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a fixture for supporting medical stent tubes. The fixture uses a first textile belt and a second textile belt that are misaligned and closed to perform a wrapped clamping and fixing effect on the medical tube, with a good fitting effect, thereby reducing the clamping pressure on the medical tube per unit area. On the basis of effectively fixing the medical tube, the yield rate of the medical tube can be improved. In addition, the first textile belt and the second textile belt have a flexible clamping effect, and thus have good energy absorption and shock absorption effects, solving the above technical problems.

[0006] To achieve the above object, the present invention provides the following technical solution: A fixture for supporting medical stent tubes includes a belt body closing and clamping mechanism, which internally has a first textile belt and a second textile belt that can perform an interleaved closing and clamping on the medical tube, and a first insertion movable plate and a second insertion movable plate that can respectively drive the insertion ends of the first textile belt and the second textile belt to move relatively; and two pneumatic contraction mechanisms, which internally have a horizontal hollow tube located on one side of the first insertion movable plate and the second insertion movable plate and having a hollow interior, a piston body placed inside the horizontal hollow tube and capable of driving the first insertion movable plate and the second insertion movable plate to move relatively under the action of gas pressure, and a horizontal spiral spring placed inside the horizontal hollow tube and capable of driving the piston body to reset.

[0007] Preferably, the belt body closing and clamping mechanism further includes a first belt body notch and a second belt body notch respectively provided in the first textile belt and the second textile belt. The first belt body notch of the first textile belt and the second belt body notch of the second textile belt are interlaced and inserted. The two vertical end portions of the first textile belt and the second textile belt are respectively fixedly inserted into the opposite ends of the first insertion movable plate and the second insertion movable plate. The centers of the other ends of the first insertion movable plate and the second insertion movable plate are provided with a first rod body fixing groove with an inward concave structure, and the two sides of the other ends of the first insertion movable plate and the second insertion movable plate are provided with a second rod body fixing groove with an inward concave structure.

[0008] Preferably, the first textile belt and the second textile belt are belt bodies made of textile materials.

[0009] Preferably, the pneumatic contraction mechanism further includes a horizontal limiting rod. One end of the horizontal hollow tube is provided with a third rod body fixing groove with a concave structure. The inside of the horizontal hollow tube is provided with a horizontal component moving cavity. The horizontal hollow tube is provided with a gas limiting flow cavity at one end located in the horizontal component moving cavity. One end of the horizontal hollow tube is provided with a first rod body perforation communicating with the outside space and one end of the gas limiting flow cavity. The inside of the horizontal hollow tube is provided with a gas compensation hole communicating with the outside space and the other end of the horizontal component moving cavity. A piston body capable of moving axially along the horizontal component moving cavity is placed inside the horizontal hollow tube at the position of the horizontal component moving cavity. A horizontal telescopic rod penetrating through the gas limiting flow cavity and the first rod body perforation is fixedly installed at one end of the piston body facing the first rod body perforation. A horizontal spiral spring is placed at the other end of the piston body. A horizontal limiting hole is provided on each of the two sides of the horizontal hollow tube, and a horizontal limiting rod capable of moving axially along the horizontal limiting hole is placed in each horizontal limiting hole. A limiting plate structure is fixedly installed at one end of the horizontal limiting rod. A docking channel communicating with the outside space and the side surface of the gas limiting flow cavity is provided at the outer circumferential part of the horizontal hollow tube. One end of the horizontal telescopic rod and the other end of the horizontal limiting rod are respectively fixedly installed inside the first rod body fixing groove and the second rod body fixing groove.

[0010] Preferably, one end of the horizontal spiral spring abuts against the end face of the horizontal component moving cavity, and the other end abuts against the corresponding end of the piston body. And the initial length of the horizontal spiral spring is greater than the transverse length of the horizontal component moving cavity.

[0011] Preferably, the structural radius of the horizontal telescopic rod matches the structural radius of the first rod body perforation. The structural radius of the horizontal telescopic rod is smaller than the structural radius of the gas limiting flow cavity. And a sealing ring capable of preventing gas from flowing out along the movement gap is installed at the position of the first rod body perforation on the horizontal hollow tube.

[0012] Preferably, it further includes two friction locking mechanisms, which internally include a longitudinal hollow support tube for providing a height support effect for the horizontal hollow tube and having a hollow state inside, a rotating disk installed at the top area of the longitudinal hollow support tube and capable of rotating with the horizontal hollow tube, a top locking rod placed inside the longitudinal hollow support tube and capable of abutting against the bottom of the rotating disk to lock the rotating disk by the friction between them, and a longitudinal spiral spring placed inside the longitudinal hollow support tube and exerting an upward elastic force on the top locking rod.

[0013] Preferably, the friction locking mechanism further includes an inner movable plate. A bottom fixing plate is installed at the bottom of the longitudinal hollow support tube. A longitudinal component movable cavity is provided inside the longitudinal hollow support tube. A second rod body perforation is provided at the top of the longitudinal hollow support tube located in the longitudinal component movable cavity. A disc-shaped cavity is provided at the top of the longitudinal hollow support tube located at the second rod body perforation. A shaft body mounting hole that communicates with the outside space and one end of the disc-shaped cavity and is in a horizontal state is provided inside the longitudinal hollow support tube. A rotatable driven shaft is installed inside the longitudinal hollow support tube at the shaft body mounting hole through a bearing. A rotatable rotating disc is fixedly installed at one end of the driven shaft located inside the disc-shaped cavity. The other end of the driven shaft is fixedly installed inside the fixing groove of the third rod body. An inner movable plate that can move axially along the longitudinal component movable cavity is placed inside the longitudinal hollow support tube in the longitudinal component movable cavity. A longitudinal spiral spring is placed at the bottom of the inner movable plate. A top locking rod that penetrates the second rod body perforation is fixedly installed at the top of the inner movable plate. The top of the top locking rod abuts against the bottom circumferential surface of the rotating disc.

[0014] Preferably, the bottom end of the longitudinal spiral spring abuts against the bottom end face of the longitudinal component movable cavity, and the top end abuts against the bottom end face of the inner movable plate, and the initial length of the longitudinal spiral spring is greater than the longitudinal height of the longitudinal component movable cavity.

[0015] Preferably, the top of the top locking rod is provided with a concave surface structure that matches the structure and shape of the bottom circumferential surface of the rotating disc.

[0016] Compared with the prior art, the present invention provides a fixture for supporting medical stent tubes, having the following beneficial effects: The medical tube is clamped and fixed in a wrapped manner by the first textile belt and the second textile belt that are staggered and closed, having a good fitting effect, thereby reducing the clamping pressure on the medical tube per unit area, so as to ensure that the finished product rate of the medical tube can be improved on the basis of being effectively fixed. In addition, the first textile belt and the second textile belt have a flexible clamping effect, and thus have good energy absorption and vibration damping effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of the present invention; Figure 2 is a perspective sectional view of the present invention; Figure 3 is a perspective view of the belt closing clamping mechanism in the present invention; Figure 4 is a perspective sectional view of the belt closing clamping mechanism in the present invention; Figure 5Isometric view of the pneumatic contraction mechanism in the present invention; Figure 6 Isometric sectional view of the pneumatic contraction mechanism in the present invention; Figure 7 Isometric view of the friction locking mechanism in the present invention; Figure 8 Isometric sectional view of the friction locking mechanism in the present invention.

[0018] Wherein: 1. Belt body closing clamping mechanism; 11. First textile belt; 12. First belt body notch; 13. Second textile belt; 14. Second belt body notch; 15. First embedded movable plate; 16. Second embedded movable plate; 17. First rod body fixing groove; 18. Second rod body fixing groove; 2. Pneumatic contraction mechanism; 21. Horizontal hollow tube; 22. Third rod body fixing groove; 23. Horizontal component movable cavity; 24. Gas limiting flow cavity; 25. First rod body perforation; 26. Gas compensation hole; 27. Piston body; 28. Horizontal spiral spring; 29. Horizontal telescopic rod; 210. Horizontal limiting hole; 211. Horizontal limiting rod; 212. Limiting plate structure; 213. Docking channel; 3. Friction locking mechanism; 31. Longitudinal hollow support tube; 32. Bottom fixing plate; 33. Longitudinal component movable cavity; 34. Second rod body perforation; 35. Disk-shaped cavity; 36. Shaft body mounting hole; 37. Inner movable plate; 38. Longitudinal spiral spring; 39. Top locking rod; 310. Rotating disk; 311. Driven shaft. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4, A fixture for supporting a medical stent tube. To achieve the wrapped clamping function for the medical tube and thus reduce the clamping pressure per unit area on the medical tube, a belt body closing clamping mechanism 1 needs to be set up. Inside it, there are a first textile belt 11 and a second textile belt 13 that can clamp the medical tube in an interleaved closing manner, and a first embedded movable plate 15 and a second embedded movable plate 16 that can drive the embedded ends of the first textile belt 11 and the second textile belt 13 to move relatively. Place the medical tube in the closing and tightening area of the first textile belt 11 and the second textile belt 13. When the first embedded movable plate 15 and the second embedded movable plate 16 move away from each other under opposite acting forces, the clamping mouths of the first textile belt 11 and the second textile belt 13 will close until the medical tube is clamped between the first textile belt 11 and the second textile belt 13. Since the first textile belt 11 and the second textile belt 13 are flexible structures, the wrapped clamping function for the medical tube is achieved.

[0021] Regarding the specific structure of the belt body closing clamping mechanism 1, please refer to Figure 3 and Figure 4 , It also includes a first belt body notch 12 and a second belt body notch 14 respectively arranged in the first textile belt 11 and the second textile belt 13. The first belt body notch 12 of the first textile belt 11 and the second belt body notch 14 of the second textile belt 13 are interlaced and inserted. The two vertical end parts of the first textile belt 11 and the second textile belt 13 are respectively fixedly embedded in the opposite ends inside the first embedded movable plate 15 and the second embedded movable plate 16. At the center of the other ends of the first embedded movable plate 15 and the second embedded movable plate 16, there is a first rod body fixing groove 17 with an inward concave structure. On both sides of the other ends of the first embedded movable plate 15 and the second embedded movable plate 16, there are second rod body fixing grooves 18 with an inward concave structure. The first textile belt 11 and the second textile belt 13 are belt bodies made of textile materials.

[0022] To achieve the pneumatic clamping function and thus have a certain buffer mobility, please refer to Figure 1 , Figure 2 , Figure 5 and Figure 6, it is necessary to set two pneumatic contraction mechanisms 2, which are internally provided with a horizontal hollow tube 21 located on one side of the first embedded movable plate 15 and the second embedded movable plate 16 and in a hollow state inside, a piston body 27 placed inside the horizontal hollow tube 21 and capable of driving the first embedded movable plate 15 and the second embedded movable plate 16 to move relative to each other under the action of gas pressure, and a horizontal spiral spring 28 placed inside the horizontal hollow tube 21 and capable of driving the piston body 27 to reset. During operation, it is necessary to connect the docking channel 213 to an air pump capable of controlling the output gas pressure. After starting the air pump, the air pressure will enter the inside of the horizontal component movable cavity 23 along the gas limiting flow cavity 24. Under the influence of the air pressure, the piston body 27 will move away from the clamping opening of the first textile belt 11 and the second textile belt 13, thereby driving the first embedded movable plate 15 and the second embedded movable plate 16 to move directionally. After completing the clamping of the medical tubing, due to the buffering property of the gas, the first textile belt 11 and the second textile belt 13 perform a buffering clamping function on the medical tubing. This buffering property enables the first textile belt 11 and the second textile belt 13 to perform a clamping resistance function with the ability of slight movement on the medical tubing, thereby improving the clamping stability.

[0023] For the specific structure of the pneumatic contraction mechanism 2, please refer to Figure 5 and Figure 6, further comprising a horizontal limiting rod 211. One end of the horizontal hollow tube 21 is provided with a third rod body fixing groove 22 with an in - concave structure. The interior of the horizontal hollow tube 21 is provided with a horizontal component moving cavity 23. The horizontal hollow tube 21 is provided with a gas limiting flow cavity 24 at one end located in the horizontal component moving cavity 23. One end of the horizontal hollow tube 21 is provided with a first rod body perforation 25 communicating the external space and one end of the gas limiting flow cavity 24. The interior of the horizontal hollow tube 21 is provided with a gas compensation hole 26 communicating the external space and the other end of the horizontal component moving cavity 23. Inside the horizontal hollow tube 21 and located in the horizontal component moving cavity 23, a piston body 27 capable of moving axially along the horizontal component moving cavity 23 is placed. At one end of the piston body 27 facing the first rod body perforation 25, a horizontal telescopic rod 29 penetrating through the gas limiting flow cavity 24 and the first rod body perforation 25 is fixedly installed. At the other end of the piston body 27, a horizontal spiral spring 28 is placed. On both sides of the horizontal hollow tube 21, a horizontal limiting hole 210 is provided respectively, and in each horizontal limiting hole 210, a horizontal limiting rod 211 capable of moving axially along the horizontal limiting hole 210 is placed. One end of the horizontal limiting rod 211 is fixedly installed with a limiting plate structure 212. On the outer circumferential part of the horizontal hollow tube 21, a docking channel 213 communicating the external space and the side surface of the gas limiting flow cavity 24 is provided. One end of the horizontal telescopic rod 29 and the other end of the horizontal limiting rod 211 are respectively fixedly installed inside the first rod body fixing groove 17 and the second rod body fixing groove 18. One end of the horizontal spiral spring 28 abuts against the end face of the horizontal component moving cavity 23, and the other end abuts against the corresponding end of the piston body 27, and the initial length of the horizontal spiral spring 28 is greater than the transverse length of the horizontal component moving cavity 23. The structural radius of the horizontal telescopic rod 29 matches the structural radius of the first rod body perforation 25, the structural radius of the horizontal telescopic rod 29 is smaller than the structural radius of the gas limiting flow cavity 24, and at the position of the first rod body perforation 25 on the horizontal hollow tube 21, a sealing ring capable of preventing gas from flowing out along the movement gap is installed.

[0024] In order to realize the function of adjusting the clamping angle of medical tubing, please refer to Figure 1 , Figure 2 , Figure 7 and Figure 8, it is necessary to set two friction locking mechanisms 3, which are internally provided with a longitudinal hollow support tube 31 that provides a height support effect for the horizontal hollow tube 21 and is hollow inside, a rotating disk 310 installed at the top region of the longitudinal hollow support tube 31 and capable of rotating with the horizontal hollow tube 21, a top locking rod 39 placed inside the longitudinal hollow support tube 31 and capable of abutting against the bottom of the rotating disk 310, and using the friction between the two to lock the rotating disk 310, and a longitudinal helical spring 38 placed inside the longitudinal hollow support tube 31 and exerting an upward elastic force on the top locking rod 39. First, the bottom fixing plate 32 is fixedly installed at the corresponding part of the laser welding equipment through threads. When the clamping angle needs to be adjusted, the horizontal hollow tube 21 is manually rotated. When the torque is greater than the maximum static friction force of the top locking rod 39 on the rotating disk 310, the rotating disk 310 will have a corresponding rotation phenomenon until the medical tubing rotates to an appropriate angle, and then the rotation of the rotating disk 310 can be stopped. At this time, due to the elastic function of the longitudinal helical spring 38, the top locking rod 39 will lock the rotating disk 310, thereby realizing the adjustment function of the clamping angle of the medical tubing.

[0025] For the specific structure of the friction locking mechanism 3, please refer to Figure 7 and Figure 8, further comprising an inner movable plate 37. A bottom fixing plate 32 is installed at the bottom of the longitudinal hollow support tube 31. A longitudinal component movable cavity 33 is provided inside the longitudinal hollow support tube 31. The longitudinal hollow support tube 31 is provided with a second rod body perforation 34 at the top of the longitudinal component movable cavity 33. The longitudinal hollow support tube 31 is provided with a disc-shaped cavity 35 at the top of the second rod body perforation 34. An axle body installation hole 36 that communicates with the outside space and one end of the disc-shaped cavity 35 and is in a horizontal state is provided inside the longitudinal hollow support tube 31. A rotatable driven shaft 311 is installed inside the longitudinal hollow support tube 31 in the axle body installation hole 36 through a bearing. One end of the driven shaft 311 inside the disc-shaped cavity 35 is fixedly installed with a rotatable rotating disc 310. The other end of the driven shaft 311 is fixedly installed inside the third rod body fixing groove 22. An inner movable plate 37 that can move axially along the longitudinal component movable cavity 33 is placed inside the longitudinal hollow support tube 31 in the longitudinal component movable cavity 33. A longitudinal spiral spring 38 is placed at the bottom of the inner movable plate 37. The top of the inner movable plate 37 is fixedly installed with a top locking rod 39 that penetrates through the second rod body perforation 34. The top of the top locking rod 39 abuts against the bottom circumferential surface of the rotating disc 310. The bottom end of the longitudinal spiral spring 38 abuts against the bottom end face of the longitudinal component movable cavity 33, and the top end abuts against the bottom end face of the inner movable plate 37. And the initial length of the longitudinal spiral spring 38 is greater than the longitudinal height of the longitudinal component movable cavity 33. The top of the top locking rod 39 is provided with an inner concave surface structure that matches the structural shape of the bottom circumferential surface of the rotating disc 310.

[0026] During use, the bottom fixing plate  32 is fixedly installed at the corresponding part of the laser welding equipment by threads. The docking channel 213 is connected to an air pump that can control the output gas pressure. The medical tubing is placed in the closing and tightening area of the first textile belt 11 and the second textile belt 13. After starting the air pump, the air pressure will enter the inside of the horizontal component movable cavity 23 along the gas limiting flow cavity 24. Under the influence of the air pressure, the piston body 27 will move away from the clamping opening of the first textile belt 11 and the second textile belt 13, thereby driving the first embedded movable plate 15 and the second embedded movable plate 16 to move directionally. When the first embedded movable plate 15 and the second embedded movable plate 16 move away from each other under opposite acting forces, the clamping opening of the first textile belt 11 and the second textile belt 13 will close until the medical tubing is clamped between the first textile belt 11 and the second textile belt 13. Since the first textile belt 11 and the second textile belt 13 are flexible structures, a wrapped clamping function for the medical tubing is realized.

[0027] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixture for supporting medical stent tubes, characterized in that: Including, a belt body closing clamping mechanism (1), inside which there is a first textile belt (11) and a second textile belt (13) capable of clamping medical tubing in an interleaved closing manner, and a first inserted movable plate (15) and a second inserted movable plate (16) capable of driving the inserted ends of the first textile belt (11) and the second textile belt (13) to move relatively; and two pneumatic contraction mechanisms (2), inside which there is a horizontal hollow tube (21) located on one side of the first inserted movable plate (15) and the second inserted movable plate (16) and in a hollow state inside, a piston body (27) placed inside the horizontal hollow tube (21) and capable of driving the first inserted movable plate (15) and the second inserted movable plate (16) to move relatively under the action of gas pressure, and a horizontal spiral spring (28) placed inside the horizontal hollow tube (21) and capable of driving the piston body (27) to reset.

2. The fixture for supporting a medical stent tube according to claim 1, wherein: The belt body closing clamping mechanism (1) further includes a first belt body notch (12) and a second belt body notch (14) respectively arranged in the first textile belt (11) and the second textile belt (13). The first belt body notch (12) of the first textile belt (11) and the second belt body notch (14) of the second textile belt (13) are interlaced and inserted. The two vertical end portions of the first textile belt (11) and the second textile belt (13) are respectively fixedly inserted into the opposite ends of the first inserted movable plate (15) and the second inserted movable plate (16). At the center of the other ends of the first inserted movable plate (15) and the second inserted movable plate (16), there is a first rod body fixing groove (17) with a concave structure. On both sides of the other ends of the first inserted movable plate (15) and the second inserted movable plate (16), there are second rod body fixing grooves (18) with a concave structure.

3. The clamp for supporting a medical stent tube according to claim 2, wherein: The first textile belt (11) and the second textile belt (13) are belt bodies made of textile materials.

4. A fixture for supporting a medical stent tube according to claim 3, characterized in that: The pneumatic contraction mechanism (2) further includes a horizontal limiting rod (211). One end of the horizontal hollow tube (21) is provided with a third rod body fixing groove (22) with an inward concave structure. The interior of the horizontal hollow tube (21) is provided with a horizontal component activity cavity (23). The horizontal hollow tube (21) is provided with a gas limiting flow cavity (24) at one end located in the horizontal component activity cavity (23). One end of the horizontal hollow tube (21) is provided with a first rod body perforation (25) communicating the external space and one end of the gas limiting flow cavity (24). The interior of the horizontal hollow tube (21) is provided with a gas compensation hole (26) communicating the external space and the other end of the horizontal component activity cavity (23). A piston body (27) capable of moving axially along the horizontal component activity cavity (23) is placed inside the horizontal hollow tube (21) at the position of the horizontal component activity cavity (23). A horizontal telescopic rod (29) penetrating the gas limiting flow cavity (24) and the first rod body perforation (25) is fixedly installed at one end of the piston body (27) facing the first rod body perforation (25). A horizontal spiral spring (28) is placed at the other end of the piston body (27). A horizontal limiting hole (210) is provided on each side of the horizontal hollow tube (21), and a horizontal limiting rod (211) capable of moving axially along the horizontal limiting hole (210) is placed in each horizontal limiting hole (210). A limiting plate structure (212) is fixedly installed at one end of the horizontal limiting rod (211). A docking channel (213) communicating the external space and the side of the gas limiting flow cavity (24) is provided at the outer circumferential part of the horizontal hollow tube (21). One end of the horizontal telescopic rod (29) and the other end of the horizontal limiting rod (211) are respectively fixedly installed inside the first rod body fixing groove (17) and the second rod body fixing groove (18).

5. The fixture for supporting a medical stent tube according to claim 4, wherein: One end of the horizontal spiral spring (28) abuts against the end face of the horizontal component activity cavity (23), and the other end abuts against the corresponding end of the piston body (27), and the initial length of the horizontal spiral spring (28) is greater than the transverse length of the horizontal component activity cavity (23).

6. The fixture for supporting a medical stent tube according to claim 5, characterized in that: The structural radius of the horizontal telescopic rod (29) matches the structural radius of the first rod body perforation (25), the structural radius of the horizontal telescopic rod (29) is smaller than the structural radius of the gas limiting flow cavity (24), and a sealing ring capable of preventing gas from flowing out along the movement gap is installed at the position of the first rod body perforation (25) of the horizontal hollow tube (21).

7. The fixture for supporting a medical stent tube according to claim 6, characterized in that: It further includes two friction locking mechanisms (3), which are internally provided with a longitudinal hollow support tube (31) that provides a height support effect for the horizontal hollow tube (21) and is hollow inside, a rotating disk (310) installed in the top area of the longitudinal hollow support tube (31) and capable of rotating with the horizontal hollow tube (21), a top locking rod (39) placed inside the longitudinal hollow support tube (31) and capable of abutting against the bottom of the rotating disk (310), and using the friction between the two to lock the rotating disk (310), and a longitudinal spiral spring (38) placed inside the longitudinal hollow support tube (31) and exerting an upward elastic force on the top locking rod (39).

8. A fixture for supporting a medical stent tube according to claim 7, characterized in that: The friction locking mechanism (3) further includes an inner movable plate (37). A bottom fixing plate (32) is installed at the bottom of the longitudinal hollow support tube (31). A longitudinal component movable cavity (33) is provided inside the longitudinal hollow support tube (31). The longitudinal hollow support tube (31) is provided with a second rod body perforation (34) at the top of the longitudinal component movable cavity (33). The longitudinal hollow support tube (31) is provided with a disk-shaped cavity (35) at the top of the second rod body perforation (34). An axle body installation hole (36) that communicates with the outside space and one end of the disk-shaped cavity (35) and is in a horizontal state is provided inside the longitudinal hollow support tube (31). A rotatable driven shaft (311) is installed inside the longitudinal hollow support tube (31) through a bearing in the axle body installation hole (36). A rotatable rotating disk (310) is fixedly installed at one end of the driven shaft (311) inside the disk-shaped cavity (35). The other end of the driven shaft (311) is fixedly installed inside the third rod body fixing groove (22). An inner movable plate (37) that can move axially along the longitudinal component movable cavity (33) is placed inside the longitudinal hollow support tube (31) in the longitudinal component movable cavity (33). A longitudinal spiral spring (38) is placed at the bottom of the inner movable plate (37). A top locking rod (39) that penetrates the second rod body perforation (34) is fixedly installed at the top of the inner movable plate (37). The top of the top locking rod (39) abuts against the bottom circumferential surface of the rotating disk (310).

9. The fixture for supporting a medical stent tube according to claim 8, characterized in that: The bottom end of the longitudinal spiral spring (38) abuts against the bottom end face of the longitudinal component movable cavity (33), and the top end abuts against the bottom end face of the inner movable plate (37), and the initial length of the longitudinal spiral spring (38) is greater than the longitudinal height of the longitudinal component movable cavity (33).

10. A fixture for supporting a medical stent tube according to claim 9, characterized in that: The top end of the top locking rod (39) is provided with a concave surface structure that matches the structural shape of the bottom circumferential surface of the rotating disk (310).

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