An interventional catheter welding apparatus and welding process thereof

Abstract

The application discloses an interventional catheter welding device and a welding process thereof, and relates to the field of interventional catheter welding. The application discloses an interventional catheter welding device and a welding process thereof, and relates to the field of interventional catheter welding. The application discloses an interventional catheter welding device and a welding process thereof, and relates to the field of interventional catheter welding. The application discloses an interventional catheter welding device and a welding process thereof, and relates to the field of interventional catheter welding. The application discloses an interventional catheter welding device and a welding process thereof, and relates to the field of interventional catheter welding. The application discloses an interventional catheter welding device and a welding process thereof, and relates to the field of interventional catheter welding. The application discloses an interventional catheter welding device and a welding process thereof, and relates to the field of interventional catheter welding. The application discloses an interventional catheter welding device and a welding process thereof, and relates to the field of interventional catheter welding. The application discloses an interventional catheter welding device and

Description

Technical Field

[0001] This application relates to the field of interventional catheter welding, and in particular to an interventional catheter welding apparatus and its welding process. Background Technology

[0002] Currently, interventional catheters are the core devices in minimally invasive interventional medicine, and they are hollow, flexible tubular instruments. They are mainly classified by function: angiography catheters, guiding catheters, microcatheters, balloon catheters, and special-function catheters. Among them, balloon catheters mainly consist of a balloon section and a catheter section. Under image guidance, they are inserted into the stenotic area of ​​the blood vessel. By applying pressure to the independent filling lumen, the distal balloon inflates, mechanically dilating the stenotic lesion. After dilation, negative pressure is aspirated, the balloon contracts, and it can be withdrawn from the body, achieving minimally invasive angiogenesis.

[0003] In the prior art, Chinese patent application number CN202021790903.1, entitled "A Fully Automatic Welding Equipment for Non-metallic Tube Components," includes an inner liner support mechanism with an inner liner drive wheel assembly and an inner liner driven wheel assembly. The inner liner is supported by the inner liner support mechanism, and the welding mechanism is supported by a welding mechanism base at the bottom. The welding mechanism has a support platform and a fixed plate. The support platform is located above the welding mechanism base, and the fixed plate is connected by a lifting assembly, which drives the fixed plate to move up and down. One end of the fixed plate is connected to a pressure roller, and the end of the fixed plate away from the inner liner is provided with a non-metallic strip traction mechanism. The fixed plate is also connected to a guide tube and a heating mechanism. The welding mechanism also has a shearing mechanism located at the end of the fixed plate near the pressure roller. The heating mechanism welds the connection between the balloon part and the guide tube part.

[0004] In view of the above-mentioned existing technology, when the connection of the balloon catheter is directly welded by the heating mechanism, the hot air is blown directly onto the welding area for heating, resulting in uneven heating of the welding area. Since the welding area is small, the hot air may also blow onto areas of the balloon catheter that are not part of the welding area, which may easily cause damage to it during subsequent welding processes. Therefore, improvements are urgently needed. Summary of the Invention

[0005] To improve the accuracy of heating the balloon catheter connection and ensure the welding effect of the balloon catheter, this application provides an interventional catheter welding device and its welding process.

[0006] The technical solution for the interventional catheter welding device and welding process provided in this application is as follows: The device includes a frame, on which a heating seat is mounted, and on which a guide arc ring is mounted. The upper side of the guide arc ring has a mounting cavity formed thereon. The central angle of the guide arc ring is greater than 180 degrees. A heating plate is rotatably connected to the guide arc ring. Multiple heaters are mounted on the heating plate. The heaters are used to blow hot air toward the center of the guide arc ring. A rotary drive assembly is mounted on the heating plate to drive the heating plate to rotate along the circumference of the guide arc ring. The frame is slidably connected to a first sliding seat and a second sliding seat. The first sliding seat and the second sliding seat are symmetrically arranged on both sides of the heating seat. The frame is provided with a first driving member and a second driving member for driving the first sliding seat and the second sliding seat to move closer to the heating seat. The first sliding seat and the second sliding seat are respectively provided with fixing devices for fixing the balloon part and the catheter part. The frame is provided with a support rod for inserting into the balloon catheter. The frame is provided with a support member for driving the support rod to move. A support device is installed on the support rod. The support device is located at the connection between the balloon and the catheter and is used to support the inner walls of the balloon and the catheter.

[0007] By adopting the above technical solution, during use, the balloon and catheter are first installed on the first and second sliding seats respectively under the action of the fixing device. The inner wall of the balloon catheter is supported by the support rod and the support device. Then, the connection between the balloon and catheter is rotated and heated by a heater. This firstly ensures the uniformity of heating and improves the welding effect of the balloon catheter. On the other hand, the support device can more accurately heat the two sides of the balloon and catheter that are close to each other, reducing the impact on other areas. It can also support the inner wall of the balloon catheter, reducing the possibility of deformation of the balloon catheter and ensuring the accuracy of the processed interventional catheter.

[0008] Preferably, the fixing device includes two fixed seats mounted on the first sliding seat or the second sliding seat. Two drive rollers are rotatably connected to the fixed seats. The axis of the drive rollers is aligned with the axis of the balloon catheter. A third drive member is provided on the fixed seats to drive the two drive rollers to rotate. A clamping seat is vertically connected to the first sliding seat or the second sliding seat. A fourth drive member is provided on the first sliding seat or the second sliding seat to drive the clamping seat to move up and down. Two clamping rollers are provided on the clamping seat. The two clamping rollers and the two drive rollers are used to fix the balloon catheter.

[0009] By adopting the above technical solution, during use, the balloon and the catheter are placed on the fixed seat. Under the action of the fourth driving component, the balloon is fixed to the catheter, thereby locking the balloon and catheter. In conjunction with the third driving component, the balloon can be rotated, which facilitates the docking and welding of the rear drive.

[0010] Preferably, the support device includes a support sleeve slidably connected to the support rod. The support sleeve has a support hole for insertion into the support rod. The end of the support rod has an expanding inclined surface. The outer diameter of the support rod gradually decreases towards the support sleeve. The support rod is inserted into the support hole to expand the support sleeve so that it fits snugly against the inner walls of the balloon and catheter portions. A limiting groove is formed on the outer wall of the support sleeve. A limiting block is rotatably connected within the limiting groove. The limiting block rotates out and abuts against the catheter portion to limit the position of the support sleeve. A limiting spring is provided in the limiting groove to push the limiting block out. A first magnetic block is provided inside the limiting block, and a second magnetic ring is provided on the side wall of the support rod. When the support rod is inserted into the support hole, the first magnetic block and the second magnetic ring attract each other to pull the limiting block into the limiting groove.

[0011] By adopting the above technical solution, during use, when the limiting block passes between the balloon and the catheter section, it abuts against the catheter section, thereby limiting the position of the support sleeve. Pushing the support rod expands the support sleeve, allowing it to better fit against the inner walls of the balloon and catheter sections. Pulling the support rod backward simultaneously pulls the support sleeve back, and under the action of the first magnetic block and the second magnetic ring, the limiting block is retracted into the limiting groove, thus achieving the purpose of shrinking the limiting block. Subsequent heating and pushing of the balloon and catheter sections together improve the accuracy of the balloon and catheter section docking and reduce inward deformation at the junction of the balloon and catheter sections, ensuring the processing effect of the inner wall of the balloon and catheter.

[0012] Preferably, the outer wall of the support sleeve is provided with a heat-conducting ring, which is used to heat the inner wall of the balloon and the inner wall of the catheter.

[0013] By adopting the above technical solution and using a heat-conducting ring, heat can be transferred to the inner wall of the balloon and the inner wall of the catheter during the heating process of the heater. This allows for more efficient and comprehensive heating of the balloon catheter, improving the heating effect of the balloon catheter.

[0014] Preferably, the heat-conducting ring is composed of multiple arc-shaped pieces, which are made of stainless steel. An installation insert is provided on the side of the arc-shaped piece near the support sleeve, and the support sleeve has an installation slot that engages with the installation insert.

[0015] By adopting the above technical solution, the heat-conducting ring made of stainless steel can better utilize the deformable support sleeve during use, improving the convenience of heating the inner wall of the balloon and the conduit. Furthermore, the use of mounting inserts and mounting slots makes the installation and fixation of the arc-shaped plate more convenient and secure.

[0016] Preferably, the rotary drive assembly includes a plurality of rotary drive components mounted on the heating plate, each rotary drive component being provided with a drive gear, and the guide ring being provided with a drive gear ring meshing with the drive gear.

[0017] By adopting the above technical solution, the two drive gears and the drive gear ring can make the heater heat in all directions of 360 degrees, ensuring the heating effect at the balloon catheter connection.

[0018] Preferably, the side wall of the fixing seat for mounting the balloon is provided with a first clamping piece, and the side wall of the clamping seat is provided with a second clamping piece. The first clamping piece and the second clamping piece are formed with limiting cavities for limiting the Y-end of the balloon on their adjacent sides. Both the fixing seat and the side wall of the clamping seat are provided with limiting slots. The two limiting slots are respectively inserted and engaged with the first clamping piece and the second clamping piece. The side walls of the first clamping piece and the second clamping piece are formed with limiting blocks. The side wall of the limiting slot is provided with a plurality of limiting grooves that engage with the limiting blocks. When the first clamping piece and the second clamping piece are close to each other, the limiting blocks are driven to engage in the limiting grooves. The bottom of the limiting slot is provided with a locking spring for pulling the first clamping piece and the second clamping piece closer to the balloon.

[0019] By adopting the above technical solution, the locking spring can push the first clamping piece and the second clamping piece closer to the balloon part. During use, the fixing seat and the clamping seat move closer to each other, thereby allowing the first clamping piece and the second clamping piece to move away from each other, thereby driving the limiting block to insert into the limiting groove, thus restricting the movement of the balloon part during the pushing process and improving the stability of the balloon part during use.

[0020] Preferably, both the first clamping piece and the second clamping piece are provided with cushioning sponge inside.

[0021] By adopting the above technical solution, the cushioning sponge can better compress and fit the balloon part, which can improve the stability of the balloon part's positioning. Furthermore, the use of sponge material can reduce the friction of the balloon part's rotation and reduce wear on the balloon part.

[0022] Preferably, the heating base has two rotating arc plates rotatably connected to it, and the two rotating arc plates are arranged opposite each other. A guide arc plate is provided on the side of the two rotating arc plates near the balloon part. A connection for guiding the hot air blown out by the heater to the balloon part and the conduit part is formed between the guide arc plate and the rotating arc plate. The two guide arc plates are arranged opposite each other. A limiting hole is opened through the rotating arc plate. The limiting hole is opened through the guide arc plate and is used to insert the balloon part and the conduit part.

[0023] By adopting the above technical solution, hot air can be blown more conveniently and accurately to the connection between the balloon and the catheter, improving the heating stability of the balloon and the catheter, enabling the balloon and the catheter to be connected more accurately, and improving the effectiveness of the interventional catheter welding device.

[0024] An interventional catheter welding process, the specific steps of which are as follows; S1, Installation and placement: Place the balloon and catheter sections onto the fixing device; S2, Internal positioning: Insert the support rod from the balloon part into the connection between the balloon part and the catheter part, and support the inside through the support device; S3, heating is performed. The heater, in conjunction with the rotary drive assembly, heats the connection between the balloon and the catheter from all directions. S4, Rotary welding, which rotates the balloon part and the catheter part closer together, so that the molten parts can be welded together; S5, Cooling and Fixing: Keep the connection fixed and cool for a period of time to connect the balloon and the catheter together. S6, Remove material: Remove the welded balloon and catheter parts to complete the balloon-catheter welding.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. During use, the balloon and catheter are first installed on the first and second sliding seats respectively under the action of the fixing device. The inner wall of the balloon catheter is supported by the support rod and the support device. Then, the connection between the balloon and catheter is rotated and heated by a heater. This process ensures the uniformity of heating and improves the welding effect of the balloon catheter. On the other hand, the support device can more accurately heat the two sides of the balloon and catheter that are close to each other, reducing the impact on other areas. It can also support the inner wall of the balloon catheter, reducing the possibility of deformation of the balloon catheter and ensuring the accuracy of the processed interventional catheter. 2. During use, place the balloon and the catheter on the fixed seat. Under the action of the fourth drive component, the balloon is fixed to the catheter, thereby locking the balloon and catheter. In conjunction with the third drive component, the balloon can be rotated, which facilitates the docking and welding of the rear drive. 3. During use, when the limiting block passes between the balloon and the catheter section, it abuts against the catheter section, thus limiting the position of the support sleeve. Pushing the support rod expands the support sleeve, allowing it to better fit against the inner walls of the balloon and catheter sections. Pulling the support rod backward simultaneously pulls the support sleeve back. Under the action of the first magnetic block and the second magnetic ring, the limiting block is retracted into the limiting groove, achieving the purpose of shrinking the limiting block. Subsequent heating and pushing of the balloon and catheter sections together improve the accuracy of the balloon and catheter section docking and reduce inward deformation at the joint, ensuring the processing effect of the balloon and catheter inner walls. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an interventional catheter welding device according to Embodiment 1 of this application; Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle; Figure 3 for Figure 1 Enlarged schematic diagram of part B; Figure 4 for Figure 1 An enlarged schematic diagram of section C; Figure 5 This is a schematic diagram of the clamping plate structure in Embodiment 2 of this application; Figure 6 This is a cross-sectional view of the rotating arc plate structure of Embodiment 2 of this application; Figure 7 This is a front view of the rotating arc plate structure of Embodiment 2 of this application; Reference numerals: 1. Second driving component; 2. Frame; 3. Second sliding seat; 4. Heating seat; 5. Heater; 6. Fixed seat; 7. Fourth driving component; 8. Third driving component; 9. Drive roller; 10. Support component; 11. Support rod; 12. Balloon part; 13. Support sleeve; 14. Guide arc ring; 15. Guide tube part; 16. Clamping seat; 17. Clamping roller; 18. Second magnetic ring; 19. First magnetic block; 20. Limiting block; 21. Heat-conducting ring; 22. Mounting insert; 23. Mounting insert 24. Groove; 25. Support hole; 26. Limiting groove; 27. Limiting compression spring; 28. Drive gear; 29. ​​Mounting cavity; 30. Rotary drive component; 31. Heating plate; 32. First sliding seat; 33. First drive component; 34. Extending inclined surface; 35. Second clamping piece; 36. Buffer sponge; 37. Limiting cavity; 38. Limiting stop block; 39. Limiting slot; 40. Limiting stop groove; 41. First clamping piece; 42. Limiting hole; 43. Rotating arc plate; 44. Guide arc plate; 45. Locking tension spring. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1 - Figure 7 This application will be described in further detail.

[0028] This application discloses an interventional catheter welding device and its welding process.

[0029] Example 1; Reference Figure 1 An interventional catheter welding device includes a frame 2, a heating seat 4 mounted on the frame 2, a guide arc ring 14 mounted on the heating seat 4, a mounting cavity 28 formed on the upper side of the guide arc ring 14, the guide arc ring 14 being C-shaped with a central angle greater than 180 degrees, a heating plate 30 rotatably connected to the guide arc ring 14, and two heaters 5 mounted on the heating plate 30, symmetrically mounted, the heaters 5 being configured as blowers. The heaters 5 are used to blow hot air towards the center of the guide arc ring 14, and a rotary drive assembly is mounted on the heating plate 30 for driving the heating plate 30 to rotate around the circumference of the guide arc ring 14. A first sliding seat 31 and a second sliding seat 3 are slidably connected to the frame 2, the first sliding seat 31 and the second sliding seat 3 being symmetrically mounted on both sides of the heating seat 4, and a first drive member 32 and a second drive member 1 are mounted on the frame 2 for driving the first sliding seat 31 and the second sliding seat 3 to move closer to the heating seat 4, the first drive member 32 and the second drive member 1 being drive cylinders. Fixing devices for fixing the balloon section 12 and the catheter section 15 are respectively installed on the first sliding seat 31 and the second sliding seat 3. A support rod 11 is installed on the frame 2. The support rod 11 is used to insert into the balloon catheter. A support member 10 for driving the support rod 11 to move is installed on the frame 2. The support member 10 uses a worm gear to drive the support rod 11 to slide. A support device is installed on the support rod 11. The support device is located at the connection between the balloon section 12 and the catheter section 15 and is used to support the inner walls of the balloon section 12 and the catheter section 15.

[0030] The fixing device includes two fixed seats 6 mounted on the first sliding seat 31 or the second sliding seat 3. Two drive rollers 9 are rotatably connected to the fixed seats 6, and the axis of the drive rollers 9 is aligned with the axis of the balloon catheter. A third drive component 8, which is a stepper motor, is mounted on the fixed seats 6 to drive the two drive rollers 9 to rotate. A clamping seat 16 is vertically connected to the first sliding seat 31 or the second sliding seat 3. A fourth drive component 7 is mounted on the first sliding seat 31 or the second sliding seat 3 to drive the clamping seat 16 to move up and down. Two clamping rollers 17 are mounted on the clamping seat 16. The two clamping rollers 17 and the two drive rollers 9 are used to fix the balloon catheter.

[0031] The support device includes a support sleeve 13 that is slidably connected to the support rod 11. The support sleeve 13 is made of a plastic material with a certain elasticity. The support sleeve 13 has a support hole 24 that is inserted into the support rod 11. The support hole 24 is a cylindrical hole. The support rod 11 and the support sleeve 13 are slidably connected. A slider is provided on the inner side of the support sleeve 13. A groove is provided on the side wall of the support rod 11. The slider and the slider cooperate to limit the position of the support sleeve 13. An expansion ramp 33 is provided at the end of the support rod 11. The outer diameter of the support rod 11 gradually decreases along the direction close to the support sleeve 13, so that the support sleeve 13 is installed at the end of the support rod 11. This allows the support sleeve 13 to be inserted into the balloon part 12 more conveniently. The support rod 11 is inserted into the support hole 24 to expand the support sleeve 13 so that it fits tightly against the inner wall of the balloon part 12 and the catheter part 15. A limiting groove 25 is provided on the outer wall of the support sleeve 13. A limiting block 20 is rotatably connected in the limiting groove 25. When the limiting block 20 is rotated out, the side wall of the limiting block 20 abuts against the side wall of the limiting groove 25, thereby fixing the position of the limiting block 20. A limiting spring 26 for pushing the limiting block 20 out is installed in the limiting groove 25. A first magnetic block 19 is installed on the inner wall of the limiting block 20. A second magnetic ring 18 is fixed on the side wall of the support rod 11. When the support rod 11 is inserted into the support hole 24, the first magnetic block 19 and the second magnetic ring 18 attract each other to pull the limiting block 20 into the limiting groove 25.

[0032] A heat-conducting ring 21 is fixed to the outer wall of the support sleeve 13. The heat-conducting ring 21 is used to heat the inner wall of the balloon part 12 and the inner wall of the catheter part 15. The heat-conducting ring 21 is composed of multiple arc-shaped pieces. The arc-shaped pieces are made of stainless steel. An installation insert 22 is fixed on the side of the arc-shaped piece close to the support sleeve 13. An installation slot 23 is provided on the support sleeve 13 to engage with the installation insert 22.

[0033] The rotary drive assembly includes rotary drive components 29 mounted at both ends of the heating plate 30. The rotary drive component 29 is a stepper motor. A drive gear 27 is mounted on the rotary drive component 29. A drive gear ring that meshes with the drive gear 27 is mounted on the guide arc ring 14.

[0034] The implementation principle of the interventional catheter welding device and its welding process in this application embodiment is as follows: During use, the balloon part 12 and the catheter part 15 are first installed on the first sliding seat 31 and the second sliding seat 3 respectively under the action of the fixing device. The inner wall of the balloon catheter is supported by the support rod 11 and the support device. Then, the heater 5 is used to rotate and heat the connection between the balloon part 12 and the catheter part 15. First, the uniformity of heating can be determined, which improves the welding effect of the balloon catheter. On the other hand, the support device can reduce the need for more precise heating of the two sides of the balloon part 12 and the catheter part 15 that are close to each other, reduce the impact on other areas, and also support the inner wall of the balloon catheter, reduce the deformation of the balloon catheter, and ensure the accuracy of processing the interventional catheter.

[0035] Example 2; Reference Figure 5 The difference between this embodiment and Embodiment 1 is that a first clamping piece 41 is installed on the side wall of the fixing seat 6 for mounting the balloon part 12, and a second clamping piece 34 is installed on the side wall of the clamping seat 16. Limiting cavities 36 for limiting the end of the balloon part 12 are formed on the sides of the first clamping piece 41 and the second clamping piece 34 that are close to each other. Limiting slots 39 are provided on the side walls of both the fixing seat 6 and the clamping seat 16. The two limiting slots 39 respectively connect with the first clamping piece 41 and the second clamping piece. The first clamping piece 41 and the second clamping piece 34 are connected by a 34-pin connector. Limiting blocks 38 are formed on both sides of the first clamping piece 41 and the second clamping piece 34 as they approach each other. Multiple limiting grooves 40 are provided on the side wall of the limiting slot 39 to engage with the limiting blocks. When the first clamping piece 41 and the second clamping piece 34 approach each other, the limiting blocks 38 are driven to engage with the limiting grooves 40. A locking spring 45 is installed at the bottom of the limiting slot 39 to pull the first clamping piece 41 and the second clamping piece 34 closer to the balloon portion 12. Both the first clamping piece 41 and the second clamping piece 34 have cushioning sponges 35 fixed inside.

[0036] Two rotating arc plates 43 are rotatably connected to the heating base 4. The two rotating arc plates 43 are arranged opposite each other. A guide arc plate 44 is fixed on the side of the two rotating arc plates 43 near the balloon part 12. A connection is formed between the guide arc plate 44 and the rotating arc plate 43 to guide the hot air blown out by the heater 5 to the connection between the balloon part 12 and the conduit part 15. The two guide arc plates 44 are arranged opposite each other. A limiting hole 42 is opened through the rotating arc plate 43. The limiting hole 42 is opened through the guide arc plate 44 and is used to insert the balloon part 12 and the conduit part 15.

[0037] The implementation principle of Embodiment 2 is as follows: the locking spring 45 can push the first clamping piece 41 and the second clamping piece 34 closer to the balloon part 12. During use, the fixing seat 6 and the clamping seat 16 move closer to each other, thereby allowing the first clamping piece 41 and the second clamping piece 34 to move further apart, thereby driving the limiting block 38 to insert into the limiting groove 40, thereby limiting the movement of the balloon part 12 during the pushing process and improving the stability of the balloon part 12 during use.

[0038] An interventional catheter welding process, the specific steps of which are as follows; S1, Installation and Placement: Place the balloon part 12 and the catheter part 15 on the fixing seat 6, and then use the clamping seat 16 to clamp the balloon part 12 and the catheter part 15 to improve the stability of the installation of the balloon part 12 and the catheter part 15. S2, internal positioning: insert the support rod 11 into the balloon part 12 and insert it into the connection between the balloon part 12 and the catheter part 15, and support the inside through the support device; Insert the support rod 11 into the connection between the balloon part 12 and the catheter part 15, and the limiting block 38 abuts against the end of the catheter part 15, so that the support rod 11 can be inserted into the support sleeve 13, so that the support sleeve 13 can abut against the inner wall of the balloon part 12 and the catheter part 15. The support rod 11 pulls the support sleeve 13 backward, and the first magnetic block 19 and the second magnetic ring 18 attract each other, thereby causing the limiting block 38 to be sucked into the limiting groove 25, so that the surface of the support sleeve 13 can be flat. S3, heating is performed. The heater 5, in conjunction with the rotary drive assembly, heats the connection between the balloon section 12 and the catheter section 15 from all directions and heats the heat-conducting ring 21, thereby heating the inner wall of the balloon section 12 and the catheter section 15 and improving the heating effect at the connection between the balloon section 12 and the catheter section 15. S4, Rotary welding: The first driving member 32 and the second driving member 1 rotate the balloon part 12 and the catheter part 15 closer together, so that the molten parts can be welded together. S5, Cooling and fixing, keeping the connection fixed, cooling for a period of time to connect the balloon part 12 and the catheter part 15 together; S6, Remove materials: Remove the welded balloon part 12 and catheter part 15 to complete the welding of the balloon catheter.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An interventional catheter welding device, characterized in that: Includes a frame (2), on which a heating seat (4) is provided, and on which a guide arc ring (14) is provided, and on which an installation cavity (28) is formed on the upper side of the guide arc ring (14), the central angle of the guide arc ring (14) is greater than 180 degrees, and a heating plate (30) is rotatably connected to the guide arc ring (14), and multiple heaters (5) are provided on the heating plate (30), the heaters (5) being used to blow hot air to the center of the guide arc ring (14), and a rotation drive assembly being provided on the heating plate (30) for driving the heating plate (30) to rotate around the circumference of the guide arc ring (14); The frame (2) is slidably connected to a first sliding seat (31) and a second sliding seat (3). The first sliding seat (31) and the second sliding seat (3) are symmetrically arranged on both sides of the heating seat (4). The frame (2) is provided with a first driving member (32) and a second driving member (1) for driving the first sliding seat (31) and the second sliding seat (3) to move closer to the heating seat (4). The first sliding seat (31) and the second sliding seat (3) are respectively provided with fixing devices for fixing the balloon part (12) and the catheter part (15). A support rod (11) is provided on the frame (2), the support rod (11) is used to insert into the balloon catheter, a support member (10) is provided on the frame (2) for driving the support rod (11) to move, a support device is installed on the support rod (11), the support device is located at the connection between the balloon part (12) and the catheter part (15) and is used to support the inner wall of the balloon part (12) and the catheter part (15).

2. The interventional catheter welding device according to claim 1, characterized in that: The fixing device includes two fixing seats (6) installed on the first sliding seat (31) or the second sliding seat (3). Two drive rollers (9) are rotatably connected to the fixing seats (6). The axis of the drive rollers (9) is consistent with the axis of the balloon catheter. A third drive member (8) for driving the two drive rollers (9) to rotate is provided on the fixing seats (6). A clamping seat (16) is vertically connected to the first sliding seat (31) or the second sliding seat (3). A fourth drive member (7) for driving the clamping seat (16) to rise and fall is provided on the first sliding seat (31) or the second sliding seat (3). Two clamping rollers (17) are provided on the clamping seat (16). The two clamping rollers (17) and the two drive rollers (9) are used to fix the balloon catheter.

3. The interventional catheter welding device according to claim 2, characterized in that: The support device includes a support sleeve (13) slidably connected to the support rod (11). The support sleeve (13) has a support hole (24) that engages with the support rod (11). The end of the support rod (11) has an expanding inclined surface (33). The outer diameter of the support rod (11) gradually decreases towards the support sleeve (13). The support rod (11) is inserted into the support hole (24) to expand the support sleeve (13) so that it fits snugly against the inner walls of the balloon section (12) and the catheter section (15). A limiting groove (25) is formed on the outer wall of the support sleeve (13). A limiting block (20) is rotatably connected inside the limiting groove (25). The limiting block (20) rotates out and abuts against the guide tube (15) to limit the position of the support sleeve (13). A limiting spring (26) is provided inside the limiting groove (25) to push the limiting block (20) out. A first magnetic block (19) is provided inside the limiting block (20). A second magnetic ring (18) is provided on the side wall of the support rod (11). When the support rod (11) is inserted into the support hole (24), the first magnetic block (19) and the second magnetic ring (18) attract each other to pull the limiting block (20) into the limiting groove (25).

4. The interventional catheter welding device according to claim 3, characterized in that: The outer wall of the support sleeve (13) is provided with a heat-conducting ring (21), which is used to heat the inner wall of the balloon part (12) and the inner wall of the catheter part (15).

5. The interventional catheter welding device according to claim 4, characterized in that: The heat-conducting ring (21) is composed of multiple arc-shaped pieces. The arc-shaped pieces are made of stainless steel. An installation insert (22) is provided on the side of the arc-shaped piece near the support sleeve (13). An installation slot (23) is provided on the support sleeve (13) to engage with the installation insert (22).

6. The interventional catheter welding device according to claim 5, characterized in that: The rotary drive assembly includes a plurality of rotary drive components (29) mounted on the heating plate (30), each rotary drive component (29) being provided with a drive gear (27), and the guide arc ring (14) being provided with a drive gear ring that meshes with the drive gear (27).

7. The interventional catheter welding device according to claim 2, characterized in that: The fixing seat (6) for mounting the balloon part (12) has a first clamping piece (41) on its side wall, and a second clamping piece (34) on its side wall. The first clamping piece (41) and the second clamping piece (34) have mutually close sides formed with limiting cavities (36) for limiting the y-end of the balloon part (12). Both the fixing seat (6) and the clamping seat (16) have limiting slots (39) on their side walls. The two limiting slots (39) respectively engage with the first clamping piece (41) and the second clamping piece (34). Limiting blocks (38) are formed on both sides of the clamping piece (41) and the second clamping piece (34) that are close to each other. The side wall of the limiting slot (39) is provided with a plurality of limiting grooves (40) that engage with the limiting blocks (38). When the first clamping piece (41) and the second clamping piece (34) are close to each other, the limiting blocks (38) are driven to engage in the limiting grooves (40). The bottom of the limiting slot (39) is provided with a locking spring (45) for pulling the first clamping piece (41) and the second clamping piece (34) closer to the balloon part (12).

8. The interventional catheter welding device according to claim 7, characterized in that: Both the first clamping piece (41) and the second clamping piece (34) are provided with cushioning sponge (35).

9. The interventional catheter welding device according to claim 8, characterized in that: Two rotating arc plates (43) are rotatably connected to the heating base (4). The two rotating arc plates (43) are arranged opposite each other. A guide arc plate (44) is provided on the side of the two rotating arc plates (43) near the balloon part (12). A connection is formed between the guide arc plate (44) and the rotating arc plate (43) for guiding the hot air blown out by the heater (5) to the connection between the balloon part (12) and the conduit part (15). The two guide arc plates (44) are arranged opposite each other. A limiting hole (42) is opened through the rotating arc plate (43). The limiting hole (42) is opened through the guide arc plate (44) and is used to insert the balloon part (12) and the conduit part (15).

10. An interventional catheter welding process, employing an interventional catheter welding device as described in any one of claims 1-9, characterized in that, The specific steps are as follows; S1, Installation and placement: Place the balloon (12) and the catheter (15) on the fixing device; S2, internal positioning, insert the support rod (11) into the balloon part (12) and insert it into the connection between the balloon part (12) and the catheter part (15) to support the inside through the support device; S3, heating is performed. The heater (5) works with the rotary drive assembly to heat the connection between the balloon (12) and the catheter (15) from all directions. S4, Rotary welding, which causes the balloon part (12) and the catheter part (15) to rotate closer together, so that the molten parts can be welded together; S5, Cool and fix, keep the connection part fixed, cool for a period of time to connect the balloon part (12) and the catheter part (15) together; S6, Take the material and remove the welded balloon part (12) and catheter part (15) to complete the welding of the balloon catheter.

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