Plastic balloon catheter folding wing machine

Abstract

This application relates to a plastic balloon catheter folding machine, including a machine base, an inflation mechanism, a base, a folding and pleating integrated machine, a drive assembly, an auxiliary bonding assembly, and a positioning and clamping mechanism. The base is fixed to the machine base. The positioning and clamping mechanism includes a clamp that holds the tube body, and the drive assembly drives it to rotate at a fixed angle. The folding and pleating integrated machine is located on the base and includes a drive component, a frame, and three folding blocks with heating mechanisms. Each folding block has a first and a second arc groove, with its end matching the adjacent second arc groove to fold and form a pleated section. The first arc groove engages with the tube body to fold the pleated section. In use, the clamp holds the tube body, and after inflation, the balloon section becomes cylindrical. A first slide pushes the balloon section into the space between the folding blocks, and the drive component drives the folding blocks to tighten, heating and shaping them into three pleated sections. The folding blocks open to leave a first gap, and the drive assembly allows the pleated sections to enter the first gap. The folding blocks are then tightened and heated to shape, eliminating the transfer step, reducing space, and solving the problem of large footprint of traditional equipment.

Description

Technical Field

[0001] This invention relates to the field of balloon folding, and in particular to a plastic balloon catheter folding mechanism. Background Technology

[0002] Angina pectoris, myocardial infarction, and other diseases can occur due to narrowing of the blood vessel walls caused by calcification and other factors. One treatment for these conditions is angioplasty, which uses a balloon catheter to dilate the narrowed area. Angioplasty is a minimally invasive procedure that does not require open-chest surgery like bypass surgery and is widely performed.

[0003] To ensure good passage of the balloon portion of the balloon catheter within the blood vessel, the goal is to make the balloon portion as small in diameter as possible when contracted. This small-diameter shape is achieved by folding the balloon portion during catheter manufacturing. The folding of the balloon portion is accomplished through a folding process that folds the balloon portion to form multiple wing-shaped flaps (e.g., 3 or 4 flaps) in the circumferential direction, and a folding process that stacks the formed flap shapes circumferentially.

[0004] Utility model patent with announcement number CN214807765U discloses a balloon folding machine, including a base plate, a segmenting mechanism disposed on the base plate, suitable for segmenting the balloon; a coiling mechanism disposed on the base plate, suitable for shaping the balloon after segmentation; and a balloon conveying device suitable for loading the balloon.

[0005] The aforementioned technical solutions have the following drawbacks: the operation process is more complex, and the operator needs to control the balloon to enter the segmentation mechanism and the winding mechanism in sequence with the assistance of the balloon delivery device. Since the segmentation mechanism and the winding mechanism are independent of each other, when the balloon is transferred between the two mechanisms, the segmented structure is easily deformed due to external environmental interference or operational errors, which affects the accuracy of subsequent winding and shaping. At the same time, the two independent mechanisms each need to occupy a certain space, which increases the overall footprint of the equipment. Summary of the Invention

[0006] To reduce operational procedures and the footprint of the equipment, this application provides a plastic balloon catheter folding machine.

[0007] The plastic balloon catheter folding machine provided in this application adopts the following technical solution:

[0008] A plastic balloon catheter folding machine includes a machine base, an inflation mechanism, a base, an integrated folding and pleating machine, a drive assembly, a heating mechanism, an auxiliary bonding assembly, and a positioning and clamping mechanism. The base is fixedly mounted on the machine base. The positioning and clamping mechanism includes a first slide and a clamp rotatably mounted on the first slide. The first slide is slidably mounted on the machine base. The clamp is used to clamp the body of the balloon catheter. The drive assembly is used to drive the clamp to rotate at a fixed angle. The inflation mechanism is used to connect to one end of the catheter and inflate the balloon portion of the balloon catheter.

[0009] The pleating and folding integrated machine is installed in the base. The pleating and folding integrated machine includes a drive component, a frame, and three folding blocks rotatably installed in the frame. The frame is fixed in the base by screws. The heating mechanism acts on the three folding blocks. The drive component drives the folding blocks to rotate synchronously in directions that are close to or far from each other. The inner side of the folding block is provided with a first arc groove and a second arc groove. The end of the folding block matches the second arc groove of the adjacent folding block for folding the balloon part and forming a pleated part. The first arc groove cooperates with the tube body for folding the pleated part arranged around the tube body.

[0010] By adopting the above technical solution, the tube body is clamped by a clamp, and the inflated balloon can expand into a cylindrical shape. Then, the first slide block is pushed to make the balloon enter between the three folding blocks. Then, the drive component drives the folding blocks to rotate and tighten in a direction that brings them closer together. With the shaping effect of the heating mechanism, the balloon will form three pleats. Then, the drive component opens the folding blocks, leaving a first gap between the first arc groove and the balloon that can accommodate the pleats (the first gap should not be too large, otherwise the pleats will not be able to fold). Then, the drive component drives the entire balloon catheter to rotate, and the pleats will rotate from the second arc groove to the first arc groove. When the pleats have completely rotated into the first gap, the drive component tightens the folding blocks. With the shaping effect of the heating mechanism, the pleats are folded. This eliminates the step of transferring the balloon between two independent mechanisms, simplifies the operation process, significantly reduces the overall space occupied by the equipment, and solves the problem of large footprint of traditional equipment.

[0011] Preferably, the folding block is provided with an auxiliary fitting component. The auxiliary fitting component is used to drive the folded part to fit towards one side of the catheter during the rotation of the balloon catheter. The auxiliary fitting component includes a stop block, a fixing block and a driving component. The stop block slides inside the folding block. One end of the stop block facing the balloon catheter is the abutting end, and the other end of the stop block has a slider. The fixing block is fixedly mounted on the outer side of the folding block by screws. The fixing block has a groove that matches the slider, and the slider slides in the groove.

[0012] The second driving block moves within the folding block. When the balloon catheter is folded, the block moves completely into the folding block. When the folding part is folded, the abutment end extends into the first arc groove of the folding block and abuts against the outer wall of the balloon part and the folding part.

[0013] By adopting the above technical solution, the auxiliary bonding component avoids interfering with the balloon flaps during the pleating stage by extending and retracting the abutment, ensuring the stability of the pleated part; while during the folding stage, the abutment extends and abuts against the outer wall of the balloon and the pleated part, which can apply continuous pressure during the rotation of the balloon, causing the pleated part to fit tightly against the outer wall of the balloon, thus enhancing the folding and shaping effect.

[0014] Preferably, the drive assembly includes a motor, a docking shaft, a first gear, and a first gear ring. The first gear ring is fixedly mounted on a clamp, the first gear is rotatably mounted on a first slide, and the first gear is meshed with the first gear ring. The docking shaft is coaxially fixedly mounted on the first gear. The motor is fixedly mounted inside the base. The output shaft of the motor is coaxially mounted with the docking shaft. The end of the docking shaft is frustoconical. The output shaft of the motor has a docking groove that matches the end of the docking shaft. When the first slide slides to its limit position toward the base, the pleating and folding machine folds the balloon part, and the docking shaft abuts against the output shaft of the motor and rotates synchronously with the output shaft of the motor.

[0015] By adopting the above technical solution, the motor is placed inside the base to avoid the motor and power line affecting the movement of the first slide. When the first slide slides to the limit position towards the base, the docking shaft abuts against the output shaft of the motor. The two come into contact with each other under pressure and generate static friction, so that the rotation of the motor output shaft can synchronously drive the docking shaft to rotate, thereby driving the clamp and the clamped balloon catheter to rotate.

[0016] Preferably, the drive assembly further includes a frame, a rotating block, and a belt. The frame is fixed to the base with screws, and the rotating block is rotatably connected to the frame. Both the frame and the rotating block are located on the side of the pleating and folding machine away from the first slide. The rotating block is coaxially arranged with the clamp. The rotating block has a through hole, and an elastic block is provided in the through hole. The elastic block has multiple elastic flaps formed by circumferential cuts. The elastic flaps are used to hold the tip of the balloon catheter. The belt is wound around the rotating block and the output shaft of the motor. The rotating block and the clamp rotate synchronously and at the same speed.

[0017] By adopting the above technical solution, the rotating block and elastic block provide auxiliary positioning for the end of the balloon catheter. The elastic flap fixes the catheter end through the elastic clamping force of the circumferential incision, and works with the clamp to achieve stable clamping of both ends of the catheter, preventing axial displacement or shaking of the balloon during rotation and folding, and maintaining coaxiality. Belt drive makes the rotating block rotate synchronously with the motor, ensuring consistent rotation at both ends of the catheter, further improving the stability and accuracy of the folding process.

[0018] Preferably, the second driving component includes a spring and an ejector. The spring is located in the groove and sleeved on the abutment block. The two ends of the spring abut against the folding block and the slider, respectively. The spring is always in a compressed state. When the folding part is folded, the ejector drives the abutment block to move toward the balloon part.

[0019] By adopting the above technical solution, when the ejector does not act on the stop block, the spring rebound force can drive the stop block to automatically retract into the folding block, without interfering with the balloon flaps and ensuring the stability of the pleated part; the ejector can precisely control the timing of the stop block extension to cooperate with the folding of the pleated part.

[0020] Preferably, the ejector includes a first magnet and a second magnet that attract each other. One end of the slider extends out of the fixed block towards the rotating block. The first magnet is embedded in the end of the slider that extends out of the fixed block. The second magnet is disposed on the rotating block. The three first magnets surround the three second magnets. When the balloon catheter is pleated, the second magnets and the first magnets are staggered. When the pleated part is folded, the second magnets gradually rotate to face the first magnets.

[0021] By adopting the above technical solution, the rotation of the rotating block can not only drive the folding part to fold, but also drive the rotation of the second magnet. By changing the position between the second magnet and the first magnet, the attraction force between the second magnet and the first magnet is changed. As the rotating block rotates, the attraction force increases, and the abutment block overcomes the elastic force of the spring and moves towards the balloon part, abutting against the folding part to assist the folding part in conforming to the surface of the balloon part for folding.

[0022] Preferably, the ejector includes a first electromagnet and a first magnetic block. One end of the slider extends out of the fixed block towards the rotating block. The first magnetic block is embedded in the end of the slider that extends out of the fixed block. The first electromagnet is disposed on the frame. Three first magnetic blocks surround the first electromagnet. When the balloon catheter is pleated, the first electromagnet is de-energized. When the pleated part is folded, the first electromagnet is energized and attracts the first magnetic block.

[0023] By adopting the above technical solution, using a first electromagnet and a first magnetic block as ejector components, the movement of the block is precisely controlled by the switching on and off of the current, resulting in fast response speed and high control accuracy.

[0024] Preferably, it also includes a second electromagnet and a second magnetic block. The second electromagnet is disposed on the base, and the second magnetic block is disposed on the first slide. When the second electromagnet is energized and attracts the second magnetic block, the docking shaft abuts against the output shaft of the motor.

[0025] By adopting the above technical solution, the cooperation between the second electromagnet and the second magnetic block can firmly fix the first slide to one side of the base during balloon machining, ensuring a tight fit between the docking shaft and the motor output shaft, preventing slippage or loosening during transmission, and guaranteeing the stability and accuracy of the fixture rotation. After machining is completed, the first slide can be released by de-energizing the electromagnet, allowing the operator to regain control of the first slide and place or remove the balloon catheter, thus improving operational convenience.

[0026] The main technical effects of this invention are reflected in the following aspects:

[0027] 1. This invention uses a clamp to hold the tube body. After inflation, the balloon can expand into a cylindrical shape. Then, the first slide block is pushed to make the balloon enter between three folding blocks. Then, the drive unit drives the folding blocks to rotate and tighten in a direction that brings them closer together. With the shaping effect of the heating mechanism, the balloon will form three pleats. Then, the drive unit drives the folding blocks to open, leaving a first gap between the first arc groove and the balloon to accommodate the pleats (the first gap should not be too large, otherwise the pleats will not be able to fold). Then, the drive assembly drives the entire balloon catheter to rotate, and the pleats will rotate from the second arc groove to the first arc groove. When the pleats have completely rotated into the first gap, the drive unit tightens the folding blocks. With the shaping effect of the heating mechanism, the pleats are folded. This eliminates the step of transferring the balloon between two independent mechanisms, simplifies the operation process, greatly reduces the overall space occupied by the equipment, and solves the problem of large footprint of traditional equipment.

[0028] 2. The auxiliary fitting component of the present invention avoids interference with the balloon flaps during the pleating stage by extending and retracting the abutment, ensuring the stability of the pleated part; while during the folding stage, the abutment extends and abuts against the outer wall of the balloon and the pleated part, which can apply continuous pressure during the rotation of the balloon, causing the pleated part to fit tightly against the outer wall of the balloon, enhancing the folding and shaping effect. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0030] Figure 2 This is a schematic diagram of the overall structure from another angle of Embodiment 1 of this application.

[0031] Figure 3 It is along Figure 2 A cross-sectional view along line AA in the middle.

[0032] Figure 4 This is a diagram showing the positional relationship between the pleating and folding integrated machine and the drive component in Embodiment 1 of this application.

[0033] Figure 5 This is a structural schematic diagram of the pleating and folding integrated machine according to Embodiment 1 of this application.

[0034] Figure 6 This is a schematic diagram of the structure of Embodiment 1 of this application, where the folding block is in a fully open state and the balloon is in an inflated state.

[0035] Figure 7 This is a schematic diagram of the pleating and folding integrated machine performing pleating operations according to Embodiment 1 of this application.

[0036] Figure 8 This is a schematic diagram of the structure of the pleated part in the folded state in Embodiment 1 of this application.

[0037] Figure 9 This is a partial structural schematic diagram of the positioning and clamping mechanism and the driving component 2 in Embodiment 1 of this application.

[0038] Figure 10 This is a schematic diagram of the docking of the balloon catheter and the rotating block in Embodiment 1 of this application.

[0039] Figure 11 This is a partial structural schematic diagram of the positioning and clamping mechanism and the second driving component in Embodiment 2 of this application.

[0040] Explanation of reference numerals in the attached drawings: 1. Balloon catheter; 11. Tube body; 12. Balloon section; 13. Pleating section; 14. End; 2. Machine base; 21. Base; 22. Inflation mechanism; 3. Positioning and clamping mechanism; 31. First slide; 32. Clamp; 4. Pleating and folding integrated machine; 41. Frame; 42. Folding block; 421. First arc groove; 422. Second arc groove; 423. First gap; 43. Electric cylinder; 44. Rack; 45. Second gear ring; 46. Rotating frame; 47. Second slide; 5. Drive assembly; 51. Motor; 511, docking groove; 52, docking shaft; 53, first gear; 54, first gear ring; 55, frame; 56, rotating block; 561, through hole; 562, elastic block; 563, elastic flap; 57, belt; 6, auxiliary bonding assembly; 61, abutment block; 611, abutment end; 612, slider; 62, fixing block; 621, sliding groove; 63, spring; 64, first magnet; 65, second magnet; 71, second electromagnet; 72, second magnetic block; 81, first electromagnet; 82, first magnetic block. Detailed Implementation

[0041] The following is in conjunction with the appendix Figures 1-11 This application will be described in further detail to make the technical solution of this application easier to understand and master.

[0042] This application discloses a plastic balloon catheter folding machine. Example

[0043] Reference Figures 1-4 This embodiment of a plastic balloon catheter folding machine includes a machine base 2, an inflation mechanism 22, a base 21, a folding and pleating integrated machine 4, a drive assembly 5, a heating mechanism, an auxiliary bonding assembly 6, and a positioning and clamping mechanism 3. The balloon catheter 1 includes a long, hollow tube body 11 and a balloon disposed on the tube body 11. The end of the tube body 11 is a tip 14, and the internal channel of the tube body 11 communicates with the balloon. The base 21 is fixedly mounted on the machine base 2. The positioning and clamping mechanism 3 includes a first slide 31 and a clamp 32 rotatably mounted on the first slide 31. The first slide 31 is slidably mounted on the machine base 2. The clamp 32 is used to clamp the tube body 11 of the balloon catheter 1. The drive assembly 5 is used to drive the clamp 32 to rotate at a fixed angle. The inflation mechanism 22 is used to connect to one end of the catheter and inflate the balloon portion 12 of the balloon catheter 1.

[0044] Reference Figures 1-5 The pleating and folding integrated machine 4 is set inside the base 21. The pleating and folding integrated machine 4 includes a drive component, a frame 41, and three folding blocks 42 rotatably set inside the frame 41. The frame 41 is fixed inside the base 21 by screws. The heating mechanism acts on the three folding blocks 42. The drive component drives the folding blocks 42 to rotate synchronously in the direction of approaching or moving away from each other. The inner side of the folding block 42 is provided with a first arc groove 421 and a second arc groove 422. The end of the folding block 42 matches the second arc groove 422 of the adjacent folding block 42 for folding the balloon part 12 and forming the pleated part 13. The first arc groove 421 cooperates with the tube body 11 for folding the pleated part 13 set around the tube body 11.

[0045] Reference Figures 4-8Using clamp 32 to hold tube 11, the inflated balloon 12 expands into a cylindrical shape. Then, the first slide block 31 is pushed to move the balloon 12 between the three folding blocks 42. Then, the drive unit drives the folding blocks 42 to rotate and tighten in a direction that brings them closer together. With the shaping effect of the heating mechanism, the balloon 12 will form three pleats 13. Then, the folding blocks 42 are driven to open, leaving a first gap 423 between the first arc groove 421 and the balloon 12 to accommodate the pleats 13 (the first gap 423 should not be too large, otherwise...). This would cause the pleated part 13 to be unable to fold), and then the drive assembly 5 drives the entire balloon catheter 1 to rotate. The pleated part 13 will rotate from the second arc groove 422 to the first arc groove 421. When the pleated part 13 is completely rotated into the first gap 423, the drive folding block 42 tightens. With the shaping of the heating mechanism, the pleated part 13 is folded. This eliminates the transfer steps of the balloon part 12 between two independent mechanisms, simplifies the operation process, greatly reduces the overall space occupied by the equipment, and solves the problem of large footprint of traditional equipment.

[0046] Reference Figure 5 The driving component includes an electric cylinder 43, a rack 44, a second gear ring 45, a rotating frame 46, and three second slide blocks 47. One end of the folding block 42 is rotatably connected to the frame 41, and the rotating frame 46 is rotatably connected to the frame 41. The second gear ring 45 is coaxially fixed on the rotating frame 46. The three second slide blocks 47 are arranged circumferentially and rotatably connected to the rotating frame 46. The three second slide blocks 47 are slidably connected to the folding blocks 42 along the length of the three folding blocks 42, respectively. The electric cylinder 43 is fixedly mounted on the base 21. The piston rod of the electric cylinder 43 is vertically downward and fixed to the rack 44. The rack 44 is meshed with the second gear ring 45. By controlling the extension and retraction of the electric cylinder 43, the three folding blocks 42 are driven to open and close.

[0047] Reference Figure 2 and Figure 4 The heating mechanism can be set in the frame 41, the folding block 42 or the base 21. The heating mechanism usually adopts resistance heating or infrared heating, which are existing mature technologies and will not be described in detail here.

[0048] Reference Figure 1 and Figure 2 The inflation mechanism 22 mainly adjusts the gas flow rate through a proportional valve to ensure stable inflation of the balloon 12. This is a mature existing technology and will not be described in detail here.

[0049] Reference Figure 1 The clamp 32 must be designed to fit the characteristics of the balloon catheter 1. It can be a miniature chuck, either manually or electrically operated, or any other custom clamp 32 that can hold the balloon catheter 1. The clamp 32 only limits the position of the tube body 11 and has virtually no impact on the inflation of the inflation mechanism 22.

[0050] Reference Figures 5-8 The folding block 42 is provided with an auxiliary fitting component 6. The auxiliary fitting component 6 is used to drive the pleated part 13 to fit towards one side of the catheter during the rotation of the balloon catheter 1. The auxiliary fitting component 6 includes a stop block 61, a fixing block 62 and a driving component 2. The stop block 61 slides in the folding block 42. One end of the stop block 61 facing the balloon catheter 1 is the abutment end 611. The other end of the stop block 61 has a slider 612. The fixing block 62 is fixedly set on the outer side of the folding block 42 by screws. The fixing block 62 has a groove 621 that matches the slider 612. The slider 612 slides in the groove 621.

[0051] Reference Figures 5-9 The second driving component drives the abutment 61 to move within the folding block 42. When the balloon catheter 1 performs the folding operation, the abutment 61 moves completely into the folding block 42. When the folding part 13 performs the folding operation, the abutment end 611 extends to the first arc groove 421 of the folding block 42 and abuts against the outer wall of the balloon part 12 and the folding part 13.

[0052] Reference Figures 6-8 The auxiliary fitting component 6, through the extension and retraction of the abutment 61, avoids interfering with the segmentation of the balloon part 12 during the pleating stage, ensuring the stability of the pleated part 13; while during the folding stage, the abutment 61 extends and abuts against the outer wall of the balloon part 12 and the pleated part 13, which can apply continuous pressure during the rotation of the balloon part 12, causing the pleated part 13 to fit tightly against the outer wall of the balloon part 12, enhancing the folding and shaping effect.

[0053] Reference Figures 2-4 The drive assembly 5 includes a motor 51, a docking shaft 52, a first gear 53, and a first gear ring 54. The first gear ring 54 is fixedly mounted on the clamp 32. The first gear 53 is rotatably mounted on the first slide 31 and meshes with the first gear ring 54. The docking shaft 52 is coaxially fixedly mounted on the first gear 53. The motor 51 is fixedly mounted inside the base 21. The output shaft of the motor 51 is coaxially mounted with the docking shaft 52. The end of the docking shaft 52 is truncated cone-shaped. The output shaft of the motor 51 has a docking groove 511 that matches the end of the docking shaft 52. When the first slide 31 slides to its limit position toward the base 21, the pleating and folding machine 4 folds the balloon part 12. The docking shaft 52 abuts against the output shaft of the motor 51 and rotates synchronously with the output shaft of the motor 51.

[0054] Reference Figures 2-4The motor 51 is housed within the base 21 to prevent the motor 51 and its power cord from affecting the movement of the first slide 31. When the first slide 31 slides to its limit position towards the base 21, the docking shaft 52 abuts against the output shaft of the motor 51. Under pressure, the two come into contact and generate static friction, allowing the rotation of the output shaft of the motor 51 to synchronously drive the rotation of the docking shaft 52, which in turn drives the clamp 32 and the clamped balloon catheter 1 to rotate. To increase the friction between the docking shaft 52 and the output shaft of the motor 51, the outer wall of the end of the docking shaft 52 and the inner wall of the docking groove 511 are coated with a high-friction coefficient coating, such as a nano-coating or a metal-based coating, and are periodically recoated.

[0055] Reference Figure 4 , Figure 9 and Figure 10 The drive assembly 5 also includes a frame 55, a rotating block 56, and a belt 57. The frame 55 is fixed in the base 21 by screws. The rotating block 56 is rotatably connected to the frame 55. The frame 55 and the rotating block 56 are both located on the side of the pleating and folding machine 4 away from the first slide 31. The rotating block 56 is coaxially arranged with the clamp 32. The rotating block 56 has a through hole 561. An elastic block 562 is provided in the through hole 561. The elastic block 562 has multiple elastic flaps 563 formed around the circumferential cut. The elastic flaps 563 are used to hold the end 14 of the balloon catheter 1. The belt 57 is wound around the output shaft of the rotating block 56 and the motor 51. The rotating block 56 and the clamp 32 rotate synchronously and at the same speed.

[0056] Reference Figure 4 , Figure 9 and Figure 10 The rotating block 56 and the elastic block 562 provide auxiliary positioning for the end 14 of the balloon catheter 1. The elastic flap 563 fixes the catheter end 14 with the elastic clamping force of the circumferential incision, and cooperates with the clamp 32 to achieve stable clamping of both ends of the catheter, preventing axial displacement or shaking of the balloon part 12 during rotation and folding, and maintaining coaxiality. The belt 57 drives the rotating block 56 to rotate synchronously with the motor 51, ensuring consistent rotation at both ends of the catheter, and further improving the stability and accuracy of the folding process.

[0057] Reference Figures 6-9 The second driving component includes a spring 63 and an ejector. The spring 63 is located in the groove 621 and is sleeved on the abutment block 61. The two ends of the spring 63 abut against the folding block 42 and the slider 612 respectively. The spring 63 is always in a compressed state. When the ejector is folding the pleated part 13, it drives the abutment block 61 to move toward the balloon part 12.

[0058] Reference Figures 6-9When the ejector does not act on the stop block 61, the spring 63's rebound force can cause the stop block 61 to automatically retract into the folding block 42, without interfering with the splitting of the balloon part 12, ensuring the stable formation of the pleated part 13; the ejector can precisely control the timing of the stop block 61's extension to coordinate with the folding of the pleated part 13.

[0059] Reference Figures 6-9 The ejector includes a first magnet 64 and a second magnet 65 that attract each other. One end of the slider 612 extends out of the fixing block 62 towards the rotating block 56. The first magnet 64 is embedded in the end of the slider 612 that extends out of the fixing block 62. The second magnet 65 is set on the rotating block 56. The three first magnets 64 surround the three second magnets 65. When the balloon catheter 1 is pleated, the second magnets 65 and the first magnets 64 are staggered. When the pleated part 13 is folded, the second magnets 65 gradually rotate to face the first magnets 64.

[0060] Reference Figures 6-9 The rotation of the rotating block 56 not only drives the pleated part 13 to fold, but also drives the second magnet 65 to rotate. By changing the position between the second magnet 65 and the first magnet 64, the attraction force between the second magnet 65 and the first magnet 64 is changed. As the rotating block 56 rotates, the attraction force increases, and the abutment block 61 overcomes the elastic force of the spring 63 and moves toward the balloon part 12, abutting against the pleated part 13 to assist the pleated part 13 in adhering to the surface of the balloon part 12 for folding.

[0061] Reference Figure 3 It also includes a second electromagnet 71 and a second magnetic block 72. The second electromagnet 71 is disposed on the base 21, and the second magnetic block 72 is disposed on the first slide 31. When the second electromagnet 71 is energized and attracts the second magnetic block 72, the docking shaft 52 abuts against the output shaft of the motor 51.

[0062] Reference Figure 2 The cooperation between the second electromagnet 71 and the second magnetic block 72 can firmly fix the first slide 31 to one side of the base 21 during the processing of the balloon part 12, ensuring that the docking shaft 52 and the output shaft of the motor 51 are in tight contact, avoiding slippage or loosening during transmission, and ensuring the stability and accuracy of the rotation of the clamp 32. After processing, the first slide 31 can be released by de-energizing the electromagnet, and the operator can regain control of the first slide 31, enabling the placement and removal of the balloon catheter 1, thus improving the convenience of operation.

[0063] Reference Figure 1 and Figure 2 The entire device is controlled by a PLC controller. Since the equipment matched with the PLC controller is a common device and belongs to the existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here. Example

[0064] The difference between Example 2 and Example 1 is that:

[0065] Reference Figure 11 The ejector includes a first electromagnet 81 and a first magnetic block 82. One end of the slider 612 extends out of the fixing block 62 towards the rotating block 56. The first magnetic block 82 is embedded in the end of the slider 612 that extends out of the fixing block 62. The first electromagnet 81 is set on the frame 41. Three first magnetic blocks 82 surround the first electromagnet 81. When the balloon catheter 1 is pleated, the first electromagnet 81 is de-energized. When the pleated part 13 is folded, the first electromagnet 81 is energized and attracts the first magnetic block 82.

[0066] Reference Figure 11 The first electromagnet 81 and the first magnetic block 82 are used as ejector components. The movement of the stop block 61 is precisely controlled by the current switching, resulting in fast response and high control accuracy.

[0067] Of course, the above are just typical examples of this application. In addition, this application may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed in this application.

Claims

1. A plastic balloon catheter folding device, characterized in that: The device includes a machine base (2), an inflation mechanism (22), a base (21), a pleating and folding integrated machine (4), a drive assembly (5), a heating mechanism, an auxiliary bonding assembly (6), and a positioning and clamping mechanism (3). The base (21) is fixedly mounted on the machine base (2). The positioning and clamping mechanism (3) includes a first slide (31) and a clamp (32) rotatably mounted on the first slide (31). The first slide (31) is slidably mounted on the machine base (2). The clamp (32) is used to clamp the tube body (11) of the balloon catheter (1). The drive assembly (5) is used to drive the clamp (32) to rotate at a fixed angle. The inflation mechanism (22) is used to connect one end of the catheter and inflate the balloon part (12) of the balloon catheter (1). The pleating and folding integrated machine (4) is set in the base (21). The pleating and folding integrated machine (4) includes a drive component, a frame (41) and three folding blocks (42) rotatably set in the frame (41). The frame (41) is fixed in the base (21) by screws. The heating mechanism acts on the three folding blocks (42). The drive component drives the folding blocks (42) to rotate synchronously in the direction of mutual approach or mutual distance. The inner side of the folding block (42) is provided with a first arc groove (421) and a second arc groove (422). The end of the folding block (42) matches the second arc groove (422) of the adjacent folding block (42) for folding the balloon part (12) and forming a pleated part (13). The first arc groove (421) cooperates with the tube body (11) for folding the pleated part (13) set around the tube body (11). The folding block (42) is provided with an auxiliary fitting component (6). The auxiliary fitting component (6) is used to drive the pleated part (13) to fit towards the side of the catheter during the rotation of the balloon catheter (1). The auxiliary fitting component (6) includes a stop block (61), a fixing block (62) and a driving component. The stop block (61) slides in the folding block (42). One end of the stop block (61) facing the balloon catheter (1) is the abutting end (611). The other end of the stop block (61) has a slider (612). The fixing block (62) is fixedly set on the outer side of the folding block (42) by screws. The fixing block (62) has a groove (621) that matches the slider (612). The slider (612) slides in the groove (621). The driving component 2, the driving block (61), moves within the folding block (42). When the balloon catheter (1) is folded, the block (61) moves completely into the folding block (42). When the folding part (13) is folded, the abutting end (611) extends into the first arc groove (421) of the folding block (42) and abuts against the outer wall of the balloon part (12) and the folding part (13).

2. The plastic balloon catheter folding machine according to claim 1, characterized in that: The drive assembly (5) includes a motor (51), a docking shaft (52), a first gear (53), and a first gear ring (54). The first gear ring (54) is fixedly mounted on a clamp (32). The first gear (53) is rotatably mounted on a first slide (31) and meshes with the first gear ring (54). The docking shaft (52) is coaxially fixedly mounted on the first gear (53). The motor (51) is fixedly mounted inside the base (21). The output shaft of the machine (51) is coaxially arranged with the docking shaft (52). The end of the docking shaft (52) is truncated cone-shaped. The output shaft of the motor (51) is provided with a docking groove (511) that matches the end of the docking shaft (52). When the first slide (31) slides to the limit position towards the base (21), the pleating and folding machine (4) folds the balloon part (12). The docking shaft (52) abuts against the output shaft of the motor (51) and rotates synchronously with the output shaft of the motor (51).

3. The plastic balloon catheter folding machine according to claim 2, characterized in that: The drive assembly (5) also includes a frame (55), a rotating block (56), and a belt (57). The frame (55) is fixed to the base (21) with screws. The rotating block (56) is rotatably connected to the frame (55). Both the frame (55) and the rotating block (56) are located on the side of the pleating and folding machine (4) away from the first slide (31). The rotating block (56) is coaxially arranged with the clamp (32). A through hole (561) is provided on the upper part, and an elastic block (562) is provided in the through hole (561). The elastic block (562) has multiple elastic flaps (563) formed around the circumferential cut. The elastic flaps (563) are used to hold the end (14) of the front end of the balloon catheter (1). The belt (57) is wound around the output shaft of the rotating block (56) and the motor (51). The rotating block (56) and the clamp (32) rotate synchronously and at the same speed.

4. The plastic balloon catheter folding machine according to claim 3, characterized in that: The second driving component includes a spring (63) and an ejector. The spring (63) is located in the groove (621) and sleeved on the abutment block (61). The two ends of the spring (63) abut against the folding block (42) and the slider (612) respectively. The spring (63) is always in a compressed state. When the folding part (13) is folded, the ejector drives the abutment block (61) to move toward the balloon part (12).

5. A plastic balloon catheter folding machine according to claim 4, characterized in that: The ejector includes a first magnet (64) and a second magnet (65) that attract each other. One end of the slider (612) extends out of the fixing block (62) towards the rotating block (56). The first magnet (64) is embedded in the end of the slider (612) that extends out of the fixing block (62). The second magnet (65) is set on the rotating block (56). The three first magnets (64) surround the three second magnets (65). When the balloon catheter (1) is pleated, the second magnet (65) and the first magnet (64) are staggered. When the pleated part (13) is folded, the second magnet (65) gradually rotates to face the first magnet (64).

6. The plastic balloon catheter folding machine according to claim 4, characterized in that: The ejector includes a first electromagnet (81) and a first magnetic block (82). One end of the slider (612) extends out of the fixing block (62) towards the rotating block (56). The first magnetic block (82) is embedded in the end of the slider (612) that extends out of the fixing block (62). The first electromagnet (81) is set on the frame (41). Three first magnetic blocks (82) surround the first electromagnet (81). When the balloon catheter (1) is pleated, the first electromagnet (81) is de-energized. When the pleated part (13) is folded, the first electromagnet (81) is energized and attracts the first magnetic block (82).

7. A plastic balloon catheter folding machine according to claim 2, characterized in that: It also includes a second electromagnet (71) and a second magnetic block (72). The second electromagnet (71) is disposed on the base (21), and the second magnetic block (72) is disposed on the first slide (31). When the second electromagnet (71) is energized and attracts the second magnetic block (72), the docking shaft (52) abuts against the output shaft of the motor (51).

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