catheter winding radius adjustment structure and catheter winding device

Abstract

This invention provides a catheter winding radius adjustment structure and a catheter winding device. The catheter winding radius adjustment structure includes: a winding platform, a sliding platform, a first winding column, a second winding column, a connecting rod, and a moving platform. The first winding column is disposed on the winding platform, and the second winding column is disposed on the sliding platform, which is movably disposed on the winding platform. The two ends of the connecting rod are rotatably connected to the sliding platform and the moving platform, respectively. The moving platform drives the connecting rod to move, and the connecting rod drives the sliding platform to move along the winding platform to adjust the distance between the first and second winding columns. This invention achieves flexible adjustment of the distance between the first and second winding columns, thereby achieving flexible adjustment of the winding radius.

Description

Technical Field

[0001] This invention relates to the field of medical catheter winding equipment technology, and more specifically, to a catheter winding radius adjustment structure and a catheter winding device. Background Technology

[0002] Existing catheters used in infusion sets require a winding process before packaging, which is generally done manually or using automated catheter winding devices. Manual operation is inefficient and requires a strictly aseptic operating environment to meet the aseptic requirements of the process, and is therefore being phased out; catheter winding devices that can automatically wind catheters are widely used.

[0003] Currently, although some automated tubing winding devices are used in the industry, these devices are relatively simple. A typical tubing winding process involves two grippers holding both ends of the tubing to straighten it. The winding structure rotates around its own axis, and as it rotates, the tubing gradually winds around multiple posts of the winding structure. By controlling the number of rotations of the winding structure, a coil of a specific size is formed, ultimately completing the tubing winding. By controlling the spacing between the multiple posts of the winding structure located at the center of the coil, the spacing space at the center of the coil can be controlled, ensuring the coil is tightened from the inside out. Existing technology typically uses cylinders to control the movement of one post relative to another fixed post. The above-mentioned cylinder adjustment method has the following drawbacks: because the cylinder stroke is fixed and there are only two states, retraction and extension, the distance between the two states is limited by the constant stroke of the cylinder. Therefore, it is impossible to finely adjust the distance between the two columns. Moreover, the distance between the two columns is related to the radius of the guide tube winding (i.e., the radius of the innermost coil of the coil). Therefore, the existing guide tube winding device cannot accurately adjust the distance between the two columns, cannot flexibly adapt to the winding work of various different sizes of guide tubes, and cannot meet the production needs of rapid winding of different types of guide tubes. Summary of the Invention

[0004] This invention provides a catheter winding radius adjustment structure and a catheter winding device to solve the problem that existing catheter winding devices cannot accurately adjust the catheter winding radius, thus failing to adapt to the winding work of various catheters of different sizes.

[0005] To address the aforementioned problems, according to one aspect of the present invention, a conduit winding radius adjustment structure is provided, comprising: a winding platform, a sliding platform, a first winding column, a second winding column, a connecting rod, and a moving platform; the first winding column is disposed on the winding platform, the second winding column is disposed on the sliding platform, and the sliding platform is movably disposed on the winding platform; both ends of the connecting rod are rotatably connected to the sliding platform and the moving platform, respectively; the moving platform drives the connecting rod to move, and the connecting rod drives the sliding platform to move along the winding platform to adjust the distance between the first winding column and the second winding column.

[0006] Furthermore, the conduit winding radius adjustment structure also includes a drive unit and a limiting structure. The drive unit is driven and connected to the motion platform to drive the motion platform to reciprocate linearly in a set direction. The limiting structure is used to limit the reciprocating motion range of the motion platform. The winding platform, sliding platform, and motion platform rotate simultaneously, driving the first winding column and the second winding column to rotate simultaneously to wind the conduit. The limiting structure includes a guide column and a limiting member. One end of the guide column is fixedly connected to the winding platform, and the other end passes through the motion platform and is slidably limited with the motion platform to constrain the motion platform to reciprocate along the axial direction of the guide column. The limiting member is adjustablely disposed on the guide column and can be locked on the guide column to limit the reciprocating motion range of the motion platform along the guide column.

[0007] Furthermore, there are two limiting components. The first limiting component is located between the winding platform and the motion platform to limit the first stop position of the motion platform. The second limiting component is located on the side of the motion platform away from the winding platform to limit the second stop position of the motion platform. When the motion platform is in the first stop position, the distance between the first winding column and the second winding column is the largest. When the motion platform is in the second stop position, the distance between the first winding column and the second winding column is the smallest.

[0008] Furthermore, when the motion platform is in the second stop position, the winding radius is used as the distance between the first winding column and the second winding column, and the guide tube is wound. After the guide tube is wound to form a coil, the motion platform is driven to the first stop position, and the second winding column moves from the inside of the coil to the outside to tighten the coil at the same time as the first winding column.

[0009] Furthermore, the guide column is axially aligned with the vertical direction; when the drive unit is not in operation, the motion platform abuts against the second limiting member under the action of gravity to be in the second stop position; when the drive unit is in operation, the motion platform is driven to rise until it abuts against the first limiting member to be in the first stop position.

[0010] Furthermore, there are multiple guide pillars, which are arranged in parallel and spaced apart; there are multiple limiting members, and some of the limiting members correspond to and cooperate with the multiple guide pillars one by one.

[0011] Furthermore, the limiting component includes a limiting block and a locking bolt. The limiting block is sleeved on the guide post and slides in a limiting engagement with the guide post. The limiting block has a through threaded hole, one end of which faces the outer periphery of the guide post. The locking bolt passes through the other end of the through threaded hole and is threaded into the inner wall of the through threaded hole. By rotating the locking bolt, the end of the locking bolt extending out of the through threaded hole is controlled to abut against the outer periphery of the guide post, thereby fixing the limiting block on the guide post.

[0012] Furthermore, the drive unit includes a drive cylinder and a drive shaft. One end of the drive shaft is connected to the telescopic rod of the drive cylinder, and the other end is rotatably connected to the motion platform. The drive shaft is used to drive the motion platform to reciprocate linearly along the axial direction of the drive shaft. The drive cylinder is fixedly installed. When the motion platform rotates along the central axis of the drive shaft, the drive shaft does not rotate.

[0013] According to another aspect of the present invention, a catheter winding device is provided, the catheter winding device including the above-described catheter winding radius adjustment structure; the catheter winding device further includes a support plate and a clamping structure, the support plate and the clamping structure being fixedly disposed on a winding platform; the support plate is used to support the catheter; the clamping structure is adjustablely disposed to clamp one end of the catheter to fix the catheter on the support plate.

[0014] Furthermore, the guide tube winding device also includes a servo motor and a hollow rotating shaft. The servo motor is connected to the hollow rotating shaft for transmission to drive the hollow rotating shaft to rotate. The guide tube winding radius adjustment structure also includes a drive unit and a limiting structure. The limiting structure is used to limit the reciprocating motion range of the motion platform. The hollow rotating shaft is connected to the limiting structure to drive the motion platform to rotate along the central axis of the hollow rotating shaft. The drive unit includes a drive cylinder and a drive shaft. One end of the drive shaft is connected to the telescopic rod of the drive cylinder, and the other end is rotatably connected to the motion platform. The drive shaft is used to drive the motion platform to reciprocate linearly along the axial direction of the drive shaft. The drive cylinder is fixedly installed. The central axis of the drive shaft is collinear with the central axis of the hollow rotating shaft. The drive shaft passes through the interior of the hollow rotating shaft and is spaced apart from the inner wall of the hollow rotating shaft so that the drive shaft does not rotate when the motion platform and the hollow rotating shaft rotate simultaneously.

[0015] Furthermore, the guide tube winding device also includes a drive pulley, which is mounted on the hollow rotating shaft and is connected to the shaft of the servo motor for belt drive, so that the servo motor is connected to the hollow rotating shaft for drive.

[0016] Applying the technical solution of this invention, this invention provides a catheter winding radius adjustment structure, comprising: a winding platform, a sliding platform, a first winding column, a second winding column, a connecting rod, and a moving platform; the first winding column is disposed on the winding platform, the second winding column is disposed on the sliding platform, and the sliding platform is movably disposed on the winding platform; both ends of the connecting rod are rotatably connected to the sliding platform and the moving platform, respectively; the moving platform drives the connecting rod to move, and the connecting rod drives the sliding platform to move along the winding platform to adjust the distance between the first winding column and the second winding column.

[0017] This invention achieves flexible adjustment of the distance between the first and second winding columns by setting up a sliding platform, a connecting rod, and a moving platform in cooperation, thereby achieving flexible adjustment of the winding radius. Of course, the conduit winding radius adjustment structure proposed in this invention can also achieve tensioning of the coil formed after the conduit is wound from the inside out by flexibly adjusting the distance between the first and second winding columns. It should also be noted that existing technologies directly use a drive unit to move the sliding platform on the winding platform to adjust the winding radius. These technologies require the drive unit to rotate together with the winding platform and the sliding platform, resulting in a relatively large overall structural size. The previous design was large and occupied a lot of space. Moreover, the distance between the first and second winding columns was directly limited by the drive stroke of the drive unit, resulting in a small adjustment range. Furthermore, the installation position of the drive unit in this design was close to the clamping structure used to hold the conduit in the conduit winding device. The circuit wiring of the two would cause signal interference between them, leading to a high overall failure rate and low operational reliability. In contrast, this invention, through its creative structural design, avoids the above-mentioned technical solutions and overcomes their shortcomings. It uses a mechanical transmission structure to achieve flexible adjustment of the winding radius, greatly reducing the overall size, solving the problem of complex circuit wiring, avoiding signal interference, reducing the failure rate, and saving costs. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0019] Figure 1 A partial structural schematic diagram of the catheter winding device provided in an embodiment of the present invention is shown;

[0020] Figure 2 It shows Figure 1 A partial structural diagram;

[0021] Figure 3 It shows Figure 2 A schematic diagram of the structure in the image, viewed from the front.

[0022] Figure 4 A partial structural schematic diagram of the catheter winding device provided in an embodiment of the present invention is shown at another angle;

[0023] Figure 5 A schematic diagram of the internal structure of a portion of the conduit winding device provided in an embodiment of the present invention is shown.

[0024] The above figures include the following reference numerals:

[0025] 10. Winding platform;

[0026] 20. Sliding platform;

[0027] 30. First roll around the column;

[0028] 40. Second volume around the column;

[0029] 50. Connecting rod;

[0030] 60. Sports platform;

[0031] 70. Drive unit; 71. Drive cylinder; 72. Drive shaft;

[0032] 80. Limiting structure; 81. Guide post; 82. Limiting component;

[0033] 90. Pallet; 100. Clamping structure; 110. Servo motor; 120. Hollow rotating shaft; 130. Transmission pulley. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] like Figures 1 to 5As shown, an embodiment of the present invention provides a catheter winding radius adjustment structure, including: a winding platform 10, a sliding platform 20, a first winding post 30, a second winding post 40, a connecting rod 50, a motion platform 60, a drive unit 70, and a limiting structure 80; the first winding post 30 is fixedly mounted on the winding platform 10, the second winding post 40 is fixedly mounted on the sliding platform 20, and the sliding platform 20 is movably mounted on the winding platform 10; both ends of the connecting rod 50 are rotatably connected to the sliding platform 20 and the motion platform 60, respectively; the drive unit... 70 is driven to connect to the motion platform 60 and is used to drive the motion platform 60 to reciprocate linearly in a set direction; the limiting structure 80 is used to limit the reciprocating range of the motion platform 60; wherein, the motion platform 60 drives the connecting rod 50 to move, and the connecting rod 50 drives the sliding platform 20 to move along the winding platform 10 to adjust the distance between the first winding column 30 and the second winding column 40; the winding platform 10, the sliding platform 20 and the motion platform 60 rotate simultaneously, driving the first winding column 30 and the second winding column 40 to rotate simultaneously to wind the guide tube.

[0036] This invention, through the coordinated arrangement of a sliding platform 20, a connecting rod 50, and a moving platform 60, achieves flexible adjustment of the distance between the first winding column 30 and the second winding column 40, thereby enabling flexible adjustment of the winding radius. By incorporating a driving unit 70 and a limiting structure 80, the distance between the first winding column 30 and the second winding column 40 is no longer limited by the driving stroke of the driving unit 70, but is controlled by the limiting structure 80. By flexibly adjusting the position of the limiting structure 80, the reciprocating motion range of the moving platform 60 can be controlled, thereby achieving flexible adjustment of the winding radius. This allows for flexible adaptation to winding operations of different sized conduits, meeting the production needs of rapid winding of various types of conduits. Furthermore, the conduit winding radius adjustment structure proposed in this invention, through flexible adjustment of the distance between the first winding column 30 and the second winding column 40, can also achieve tensioning of the coil formed after conduit winding from the inside out. It should also be noted that: Existing technologies include a method where the winding radius is adjusted by directly driving the sliding platform 20 to move on the winding platform 10 using the drive unit 70. This method requires the drive unit 70 to rotate along with both the winding platform 10 and the sliding platform 20, resulting in a large overall structure and a large space requirement. Furthermore, the distance between the first winding column 30 and the second winding column 40 is directly limited by the drive stroke of the drive unit 70, limiting the adjustable range. Additionally, the installation position of the drive unit 70 is close to the clamping structure 100 used to hold the conduit in the conduit winding device, causing signal interference between their circuits, leading to a high overall failure rate and low reliability. In contrast, this invention, through its innovative structural design, avoids these shortcomings and achieves flexible adjustment of the winding radius using a mechanical transmission structure. This significantly reduces the overall size, solves the problem of complex circuit routing, avoids signal interference, reduces the failure rate, and saves costs.

[0037] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the limiting structure 80 includes a guide post 81 and a limiting member 82. One end of the guide post 81 is fixedly connected to the winding platform 10, and the other end passes through the motion platform 60 and is slidably limited to the motion platform 60 to constrain the motion platform 60 to reciprocate along the axial direction of the guide post 81. The limiting member 82 is adjustablely disposed on the guide post 81 and can be locked on the guide post 81 to limit the range of reciprocating motion of the motion platform 60 along the guide post 81.

[0038] By setting the limiting structure 80, including the guide post 81 and the limiting member 82, the reliable reciprocating motion of the constraint motion platform 60 is ensured, and the reciprocating motion range of the motion platform 60 along the guide post 81 is flexibly limited. The simple structure enables flexible adjustment of the winding radius, thereby achieving flexible adaptation to the winding work of different sized conduits and meeting the production needs of rapid winding of different types of conduits.

[0039] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, there are two limiting members 82. The first limiting member 82 is disposed between the winding platform 10 and the motion platform 60 to limit the first stop position of the motion platform 60. The second limiting member 82 is disposed on the side of the motion platform 60 away from the winding platform 10 to limit the second stop position of the motion platform 60. When the motion platform 60 is in the first stop position, the distance between the first winding column 30 and the second winding column 40 is the largest. When the motion platform 60 is in the second stop position, the distance between the first winding column 30 and the second winding column 40 is the smallest.

[0040] By setting two limiting components 82, reliable limitation of the two positions of the motion platform 60 is achieved, thereby providing structural support for the rapid adjustment of the distance between the first winding column 30 and the second winding column 40 between two values.

[0041] Specifically, when the motion platform 60 is in the second stop position, the distance between the first winding column 30 and the second winding column 40 is used as the winding radius, and the guide tube is wound. After the guide tube is wound to form a coil, the motion platform 60 is driven to the first stop position, and the second winding column 40 moves from the inside of the coil to the outside, so as to tighten the coil at the same time as the first winding column 30.

[0042] This design allows for tightening from the inside out after the guide tube is wound into a coil, ensuring a tight fit between adjacent coils and facilitating subsequent bagging and transportation of the coil.

[0043] Optionally, the axial direction of the guide column 81 is vertical; when the drive unit 70 is not working, the motion platform 60 abuts against the second limiting member 82 under the action of gravity to be in the second stop position; when the drive unit 70 is working, the motion platform 60 is driven to rise until it abuts against the first limiting member 82 to be in the first stop position.

[0044] By setting the axial direction of the guide column 81 to be vertical, gravity is effectively used to reset the motion platform 60, so that the reset of the motion platform 60 does not need to rely on an additional structure for driving, which simplifies the structure and further improves the reciprocating motion efficiency of the motion platform 60.

[0045] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, there are multiple guide posts 81, which are arranged in parallel and spaced apart; there are multiple limiting members 82, and some of the limiting members 82 correspond to and cooperate with the multiple guide posts 81 one by one. This arrangement not only ensures the smoothness and stability of the reciprocating motion of the motion platform 60 and enables adaptation to motion platforms 60 with larger masses, but also improves the connection strength between the limiting structure 80 and the winding platform 10.

[0046] Specifically, the limiting member 82 includes a limiting block and a locking bolt. The limiting block is sleeved on the guide post 81 and slides in a limiting engagement with the guide post 81. The limiting block has a through threaded hole, one end of which faces the outer periphery of the guide post 81. The locking bolt passes through the other end of the through threaded hole and is threadedly engaged with the inner wall of the through threaded hole. By rotating the locking bolt, the end of the locking bolt extending out of the through threaded hole is controlled to abut against the outer periphery of the guide post 81 to fix the limiting block on the guide post 81.

[0047] By setting the specific structure of the limiting component 82, reliable locking of the limiting component 82 on the outer periphery of the guide post 81 is ensured, and the structure of the limiting component 82 is simplified, which facilitates the subsequent installation, adjustment and disassembly of the limiting component 82. In addition, it also effectively reduces costs.

[0048] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the drive unit 70 includes a drive cylinder 71 and a drive shaft 72. One end of the drive shaft 72 is connected to the telescopic rod of the drive cylinder 71, and the other end is rotatably connected to the motion platform 60. The drive shaft 72 is used to drive the motion platform 60 to reciprocate linearly along the axial direction of the drive shaft 72. The drive cylinder 71 is fixedly installed. When the motion platform 60 rotates along the central axis of the drive shaft 72, the drive shaft 72 does not rotate.

[0049] By setting the drive unit 70 to include a drive cylinder 71 and a drive shaft 72, a reliable drive for the reciprocating linear motion of the motion platform 60 is achieved using a simple structure.

[0050] It should be noted that, in a specific embodiment of the present invention, the drive cylinder 71 can adopt the following structures: 1. Hydraulic drive cylinder: The hydraulic drive cylinder generates pressure through a hydraulic pump, which delivers hydraulic oil to the hydraulic cylinder, causing the piston rod inside the hydraulic cylinder to reciprocate, thereby driving the drive shaft 72 to move; the hydraulic drive cylinder has the advantages of large output force, fast response speed, and high control precision; 2. Pneumatic drive cylinder: The pneumatic drive cylinder delivers compressed air to the pneumatic cylinder through an air pump, causing the piston rod inside the pneumatic cylinder to reciprocate, thereby driving the drive shaft 72 to move; the pneumatic drive cylinder has the advantages of simple structure, low cost, and easy maintenance; 3. Electric drive cylinder: The electric drive cylinder uses a motor to rotate, and through a reducer, coupling, and other transmission devices, converts the rotational motion into linear motion to drive the drive shaft 72 to move; the electric drive cylinder has the advantages of high control precision, fast response speed, and low energy consumption; The different structures of the drive cylinder 71 have their own advantages and limitations in different application scenarios, therefore, they need to be flexibly selected according to actual needs.

[0051] This invention also provides a catheter winding device, which includes the aforementioned catheter winding radius adjustment structure. The catheter winding device proposed in this invention is simple in structure, low in cost, and reliable in operation, making it suitable for widespread application.

[0052] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the conduit winding device also includes a support plate 90 and a clamping structure 100, which are respectively fixedly mounted on the winding platform 10. The support plate 90 is used to support the conduit. The clamping structure 100 is adjustable and used to clamp one end of the conduit to fix the conduit on the support plate 90.

[0053] By setting the support plate 90, reliable support for the catheter is achieved, which facilitates the stable operation of the catheter winding process.

[0054] It should be noted that, in a specific embodiment of the present invention, the clamping structure 100 can adopt the following structures: 1. Parallel grippers: This gripper structure consists of two parallel clamping surfaces, which can evenly clamp the conduit; this structure is suitable for occasions where the clamping force on the conduit needs to be evenly distributed; 2. Spiral grippers: This gripper structure has a spiral structure with a variable inner diameter. The spiral structure is fitted onto the outside of the conduit to achieve clamping of the conduit. It can flexibly adjust the clamping force as needed and is suitable for conduits of different diameters and hardness; 3. Elastic grippers: This gripper is made of elastic material and can automatically adapt to conduits of different diameters. Elastic grippers are usually used in occasions where conduit needs to be changed quickly or where the conduit diameter changes significantly; 4. Pneumatic grippers: This gripper uses pneumatic control to clamp and release the conduit. Pneumatic grippers have the advantages of fast response speed and high control precision, and are suitable for automated production lines; 5. Hydraulic grippers: Similar to the above-mentioned pneumatic grippers, hydraulic grippers use a hydraulic system to clamp the conduit. Hydraulic grippers have greater clamping force and more stable clamping performance, and are suitable for... 6. Magnetic grippers: These grippers use magnetic force to open and close, clamping the tubing. They are particularly suitable for applications requiring the fixing of tubing on metal surfaces (e.g., the support plate 90 is a metal plate). 7. Mechanical grippers: These grippers use mechanical structures (such as levers, hinges, sliding structures, etc.) to clamp the tubing. Mechanical grippers have the advantages of simple structure and low cost, and are suitable for some simple application scenarios. 8. Combination grippers: These grippers combine the advantages of the above structures and can be customized according to specific needs. For example, pneumatic grippers and elastic grippers can be used simultaneously to achieve rapid response and adapt to tubing of different diameters. 9. Multi-finger grippers: These grippers mimic the design of human fingers and have multiple independently controllable clamping units. Multi-finger grippers can achieve more complex clamping actions and are suitable for applications requiring precision operation. Therefore, each of the above gripper structures has its specific application scenarios and advantages. When selecting the specific structure of the clamping structure 100, the most suitable type can be determined based on the specific usage requirements, the size and hardness of the tubing, and the operating space.

[0055] In another preferred embodiment of the present invention, the clamping structure 100 adopts a spring-loaded gripper, which can be raised and lowered under the drive of an external structure. The spring-loaded gripper is a type of mechanical gripper that uses the elastic force of a spring to achieve the closing of the gripper and the maintenance of the clamping force. In use, the operator can manually open the spring-loaded gripper, insert one end of the conduit, and then release the spring-loaded gripper to clamp and fix the conduit using the elastic force of the spring. The spring-loaded gripper does not require "electrical" or "pneumatic" pipeline wiring, which can not only greatly reduce the size of the clamping structure 100, but also eliminate the need for structures such as electrical slip rings (an electrical slip ring is an electrical connection device used to transmit electrical signals or power between rotating and stationary parts, and its main function is to ensure the continuous transmission of electrical signals or power when the equipment is rotating), thus greatly saving costs.

[0056] like Figure 1 , Figure 4 and Figure 5 As shown, the conduit winding device also includes a servo motor 110 and a hollow rotating shaft 120. The servo motor 110 is connected to the hollow rotating shaft 120 to drive the hollow rotating shaft 120 to rotate. The conduit winding radius adjustment structure also includes a drive unit 70 and a limiting structure 80. The limiting structure 80 is used to limit the reciprocating motion range of the motion platform 60. The hollow rotating shaft 120 is connected to the limiting structure 80 to drive the motion platform 60 to rotate along the central axis of the hollow rotating shaft 120. The drive unit 70 includes a drive cylinder 71 and a drive shaft. 72. One end of the drive shaft 72 is connected to the telescopic rod of the drive cylinder 71, and the other end is rotatably connected to the motion platform 60. The drive shaft 72 is used to drive the motion platform 60 to reciprocate linearly along the axial direction of the drive shaft 72. The drive cylinder 71 is fixedly installed. The central axis of the drive shaft 72 is collinear with the central axis of the hollow rotating shaft 120. The drive shaft 72 passes through the interior of the hollow rotating shaft 120 and is spaced apart from the inner wall of the hollow rotating shaft 120 so that the drive shaft 72 does not rotate when the motion platform 60 and the hollow rotating shaft 120 rotate simultaneously.

[0057] By setting the drive shaft 72 to pass through the interior of the hollow rotating shaft 120 and spaced apart from the inner wall of the hollow rotating shaft 120, when the motion platform 60 and the hollow rotating shaft 120 rotate simultaneously, neither the drive shaft 72 nor the drive cylinder 71 rotates. This effectively reduces the overall rotational mass, ensuring not only ease and efficiency when rotating and winding the guide tube, but also reducing inertia when stopping rotation, thus achieving rapid stopping and precise control of the number of turns of the guide tube.

[0058] It should be noted that, in a specific embodiment of the present invention, in order to enable the drive shaft 72 to drive the motion platform 60 to reciprocate linearly, and the motion platform 60 to rotate without driving the drive shaft 72, a T-slot can be provided on the motion platform. The cross-section of the T-slot along the vertical direction is T-shaped. The T-slot includes a horizontal slot and a vertical slot that are interconnected. The horizontal slot is horizontally arranged, and the vertical slot is vertically arranged. The dimension of the horizontal slot along the horizontal direction is larger than the dimension of the vertical slot along the horizontal direction. The connection end of the drive shaft 72 and the motion platform 60 has a disk. The disk is limited and fitted with the inner wall of the horizontal slot (e.g., clearance fit). The shaft of the drive shaft 72 is inserted into the vertical slot along the vertical direction and is clearance fitted with the inner wall of the vertical slot. With this configuration, when the motion platform 60 rotates, the horizontal slot and the vertical slot rotate simultaneously, without driving the disk and the shaft of the drive shaft 72 to rotate. When the drive shaft 72 reciprocates, the disk contacts the upper and lower inner walls of the horizontal slot respectively, so as to drive the motion platform 60 to reciprocate linearly.

[0059] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the guide tube winding device also includes a transmission pulley 130, which is mounted on the hollow rotating shaft 120 and is connected to the shaft of the servo motor 110 via belt drive, so that the servo motor 110 is connected to the hollow rotating shaft 120 via drive.

[0060] By setting the transmission pulley 130 on the hollow rotating shaft 120 and connecting it to the shaft of the servo motor 110 for belt drive, flexible control of the number of turns of the guide tube can be achieved.

[0061] In summary, this invention provides a catheter winding radius adjustment structure and a catheter winding device. By configuring a sliding platform 20, a connecting rod 50, and a moving platform 60 in cooperation, this invention achieves flexible adjustment of the distance between the first winding column 30 and the second winding column 40, thereby achieving flexible adjustment of the winding radius. By configuring a driving unit 70 and a limiting structure 80, the distance between the first winding column 30 and the second winding column 40 is no longer limited by the driving stroke of the driving unit 70, but is controlled by the limiting structure 80. By flexibly adjusting the position of the limiting structure 80, the reciprocating motion range of the moving platform 60 can be controlled, thereby achieving flexible adjustment of the winding radius. This allows for flexible adaptation to the winding of catheters of different sizes, meeting the production needs of rapid winding of different types of catheters. Of course, the catheter winding radius adjustment structure proposed in this invention, through flexible adjustment of the distance between the first winding column 30 and the second winding column 40, can also achieve flexible adjustment of the coil formed after catheter winding from the inside out. External tension; at the same time, it should be noted that: in the prior art, there is a technical solution that directly uses the drive unit 70 to drive the sliding platform 20 to move on the winding platform 10 to adjust the winding radius. The above technical solution requires the drive unit 70 to rotate together with the winding platform 10 and the sliding platform 20, which makes the overall structure larger and occupies more space. Moreover, the distance between the first winding column 30 and the second winding column 40 is directly limited by the drive stroke of the drive unit 70, and the adjustable range is small. In addition, the installation position of the drive unit 70 in this solution is close to the clamping structure 100 used to clamp the conduit in the conduit winding device. The circuit wiring of the two will generate signal interference between each other, resulting in a high overall failure rate and low operational reliability. However, the present invention avoids the above technical solutions through creative structural design, overcomes the shortcomings of the above technical solutions, and uses a mechanical transmission structure to achieve flexible adjustment of the winding radius, greatly reducing the overall size, solving the problem of complex circuit wiring, avoiding signal interference, reducing the failure rate, and saving costs.

[0062] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0063] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0064] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0065] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0066] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. In a catheter winding radius adjustment structure, the improvement wherein, The catheter winding radius adjusting structure comprises a winding platform (10), a sliding platform (20), a first winding column (30), a second winding column (40), a connecting rod (50) and a moving platform (60); the first winding column (30) is arranged on the winding platform (10), the second winding column (40) is arranged on the sliding platform (20), and the sliding platform (20) is movably arranged on the winding platform (10); the two ends of the connecting rod (50) are rotationally connected with the sliding platform (20) and the moving platform (60) respectively; the moving platform (60) drives the connecting rod (50) to move, the connecting rod (50) drives the sliding platform (20) to move along the winding platform (10), so as to adjust the distance between the first winding column (30) and the second winding column (40). The catheter winding radius adjusting structure further comprises a limiting structure (80), and the limiting structure (80) comprises a limiting piece (82). The two limiting pieces (82) are arranged between the winding platform (10) and the moving platform (60), and are used for limiting the first stop position of the moving platform (60); the second limiting piece (82) is arranged on the side of the moving platform (60) away from the winding platform (10), and is used for limiting the second stop position of the moving platform (60); when the moving platform (60) is in the first stop position, the distance between the first winding column (30) and the second winding column (40) is maximum; when the moving platform (60) is in the second stop position, the distance between the first winding column (30) and the second winding column (40) is minimum.

2. The catheter winding radius adjusting structure according to claim 1, wherein the catheter winding radius adjusting structure further comprises a driving part (70), the driving part (70) is drivingly connected with the moving platform (60), and is used for driving the moving platform (60) to reciprocatingly move linearly along a set direction; the limiting structure (80) is used for limiting the reciprocating movement range of the moving platform (60); the winding platform (10), the sliding platform (20) and the moving platform (60) rotate simultaneously, thereby driving the first winding column (30) and the second winding column (40) to rotate simultaneously, so as to wind the catheter; the limiting structure (80) comprises a guide column (81), one end of the guide column (81) is fixedly connected with the winding platform (10), the other end penetrates through the moving platform (60) and is in sliding limiting cooperation with the moving platform (60), so as to constrain the moving platform (60) to reciprocatingly move along the axial direction of the guide column (81); the limiting piece (82) is adjustably arranged on the guide column (81) and can be locked on the guide column (81), and is used for limiting the reciprocating movement range of the moving platform (60) along the guide column (81). ​ ​ 3. The catheter winding radius adjustment structure according to claim 2, characterized by, When the movement platform (60) is in the second stop position, the distance between the first winding column (30) and the second winding column (40) is the winding radius, and the conduit is wound; after the conduit winding is completed to form a coil pipe, the movement platform (60) is driven to be in the first stop position, and the second winding column (40) moves from the inside to the outside of the coil pipe to simultaneously tighten the coil pipe with the first winding column (30).

4. The catheter winding radius adjustment structure according to claim 3, characterized by, The axial direction of the guide column (81) is vertical; when the driving part (70) is not working, the movement platform (60) abuts against the second limiting part (82) under the action of gravity to be in the second stop position; when the driving part (70) is working, the movement platform (60) is driven to ascend to abut against the first limiting part (82) to be in the first stop position.

5. The catheter winding radius adjustment structure according to claim 2, characterized by, The guide columns (81) are multiple, and the multiple guide columns (81) are arranged in parallel and at intervals; the limiting parts (82) are multiple, and a part of the multiple limiting parts (82) correspond to the multiple guide columns (81) one by one.

6. The catheter winding radius adjustment structure of claim 2, wherein, The limiting part (82) comprises a limiting block and a locking bolt, the limiting block is sleeved on the guide column (81) and is in sliding limiting cooperation with the guide column (81); the limiting block has a through threaded hole, one end of the through threaded hole faces the outer periphery of the guide column (81), and the locking bolt passes through the other end of the through threaded hole and is in threaded cooperation with the inner wall of the through threaded hole; wherein, by rotating the locking bolt, the abutting cooperation between the one end of the locking bolt extending out of the through threaded hole and the outer periphery of the guide column (81) is controlled to fix the limiting block on the guide column (81).

7. The catheter winding radius adjustment structure of claim 2, wherein, The driving part (70) comprises a driving cylinder (71) and a driving shaft (72), one end of the driving shaft (72) is connected with the telescopic rod of the driving cylinder (71), and the other end is rotationally connected with the movement platform (60); the driving shaft (72) is used to drive the movement platform (60) to reciprocate and linearly move along the axial direction of the driving shaft (72); the driving cylinder (71) is fixedly arranged; wherein, when the movement platform (60) rotates along the central axis of the driving shaft (72), the driving shaft (72) does not rotate.

8. A catheter winding device, characterized by The conduit winding device comprises the conduit winding radius adjusting structure of any one of claims 1 to 7; the conduit winding device further comprises a supporting plate (90) and a clamping structure (100), the supporting plate (90) and the clamping structure (100) are fixedly arranged on the winding platform (10) respectively; the supporting plate (90) is used to carry the conduit; the clamping structure (100) is adjustably arranged and is used to clamp one end of the conduit to fix the conduit on the supporting plate (90).

9. The catheter winding device according to claim 8, characterized in that The catheter winding device further comprises a servo motor (110) and a hollow rotating shaft (120), the servo motor (110) is in driving connection with the hollow rotating shaft (120) to drive the hollow rotating shaft (120) to rotate; the catheter winding radius adjusting structure further comprises a driving part (70) and a limiting structure (80), the limiting structure (80) is used for limiting the reciprocating movement range of the movement platform (60); the hollow rotating shaft (120) is connected with the limiting structure (80) to drive the movement platform (60) to rotate along the central axis of the hollow rotating shaft (120); the driving part (70) comprises a driving cylinder (71) and a driving shaft (72), one end of the driving shaft (72) is connected with the telescopic rod of the driving cylinder (71), and the other end is in rotary connection with the movement platform (60); the driving shaft (72) is used for driving the movement platform (60) to reciprocate linearly along the axial direction of the driving shaft (72); the driving cylinder (71) is fixedly arranged; the central axis of the driving shaft (72) is collinear with the central axis of the hollow rotating shaft (120); the driving shaft (72) penetrates through the inside of the hollow rotating shaft (120) and is arranged in a spaced manner with the inner wall of the hollow rotating shaft (120), so that the driving shaft (72) does not rotate when the movement platform (60) and the hollow rotating shaft (120) rotate at the same time.

10. The catheter winding device according to claim 9, characterized in that The catheter winding device further comprises a transmission pulley (130), the transmission pulley (130) is arranged on the hollow rotating shaft (120) and is in belt driving connection with the rotating shaft of the servo motor (110), so that the servo motor (110) is in driving connection with the hollow rotating shaft (120).

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