A plastic interventional catheter and its preparation method

Abstract

The present invention discloses a plastic interventional catheter and a preparation method thereof, and relates to the technical field related to the preparation of interventional catheters. A preparation device for a plastic interventional catheter comprises an equipment seat, a control console, a loading mechanism, a debugging and feeding mechanism, a clamping assembly, a reaming pin, a manipulator and a stretching and reducing assembly; a control console is provided on one side of the top of the equipment seat, and a debugging and feeding mechanism is provided on the side of the control console; in the present invention, when the catheter tube body portion of the interventional catheter is processed and produced, the reaming pin for reaming the catheter tube body can be rotated synchronously while moving, thereby improving the accuracy of reaming the catheter tube body, making the inner wall of the catheter tube body smoother, facilitating subsequent reprocessing, and at the same time completing the automated catheter tube body loading operation, thereby improving the efficiency of the production and preparation of the interventional catheter, eliminating the need for staff to assist in loading, and reducing costs.

Description

Technical Field

[0001] The present invention relates to the technical field related to the preparation of interventional catheters, and in particular to a plastic interventional catheter and a preparation method thereof. Background Art

[0002] Interventional catheters are a type of medical catheter. According to their functions, they are mainly divided into vascular catheters, gastrointestinal catheters, biliary catheters and urinary tract catheters. According to their materials, they are mainly divided into two categories: metal catheters and non-metallic catheters. Among them, non-metallic catheters are generally made of polymer materials, have good biocompatibility, softness and plasticity, and are suitable for disposable use.

[0003] The existing Chinese patent application with publication number CN112828172A discloses a hydraulic catheter expanding machine, including a clamp, a power cord, a base, a switch, a CNC panel, a expanding cone, a slide A, a spindle servo system, an oil tank, a hydraulic catheter positioning mechanism, a ball screw A, a ball screw bearing support and a nut A; a box is installed at one end of the upper surface of the base, and the box covers the spindle servo system for protecting the spindle servo system; the end where the box is located is the left end, and the CNC panel is installed on the front end face of the box; in this invention, the cooperation between the hydraulic catheter positioning mechanism and the slide A can determine the accurate processing feed amount, and at the same time, the clamp can effectively clamp the hydraulic catheter. In actual operation, the size is accurate, the use is convenient and quick, the expanding efficiency is high, and the yield rate is above 90%, which greatly improves work efficiency.

[0004] However, the catheter preparation device has the following defects when used:

[0005] 1. Existing catheter preparation equipment requires reaming the interior of a catheter (interventional catheter) during production and processing, making the catheter hollow. However, in typical catheter reaming equipment, the reamer (reaming pin, etc.) rotates during reaming, while the catheter to be reamed moves to complete the reaming process. During this process, the axis positions of the rotating and moving catheters are located at different locations, resulting in large errors during actual processing, resulting in a rough reamed surface.

[0006] 2. When existing catheter preparation equipment is used to produce and process catheters (interventional catheters), workers are required to manually place the catheter to be expanded on the corresponding hydraulic catheter positioning mechanism during the actual material expansion process. This is inconvenient, has high labor costs, and does not meet the automation requirements of modern factories. Summary of the Invention

[0007] The object of the present invention is to provide a plastic interventional catheter and a preparation method thereof to solve the problems raised in the above background technology.

[0008] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

[0009] The present invention provides a plastic interventional catheter, which comprises a catheter body and a catheter socket. The catheter socket is installed at one end of the catheter body, and the interior of the catheter body is arranged to be hollow.

[0010] The present invention provides a device for preparing a plastic interventional catheter, comprising a device base, a console, a loading mechanism, a debugging and feeding mechanism, a clamping assembly, a reaming pin, a manipulator, and a stretching and reducing assembly;

[0011] A control console is provided on one side of the top of the equipment base, a debugging and feeding mechanism is provided on the side of the control console, a loading mechanism is provided on the side of the debugging and feeding mechanism away from the control console, the loading mechanism is installed at the top edge of the equipment base, a plurality of conduit tubes are stored inside the loading mechanism, and the conduit tubes are pushed to move into the interior of the clamping assembly, and the clamping assembly is installed on the top of the debugging and feeding mechanism;

[0012] The debugging and feeding mechanism pushes the catheter body to the side of the reaming pin, and the reaming pin performs reaming operation on the catheter body. A manipulator is also provided on the side of the debugging and feeding mechanism, and the manipulator grabs the reamed catheter body and moves it to the top of the stretching and reducing assembly.

[0013] The stretching and reducing diameter component is located on the side of the debugging and feeding mechanism and is arranged away from the manipulator.

[0014] As a preferred embodiment of the present invention, the feeding mechanism includes:

[0015] A bottom frame, the bottom frame is installed at the edge of the top of the equipment base, a loading frame is installed on the top of the bottom frame, and a guide groove is opened at the top center of the loading frame;

[0016] A pushing cylinder is installed on one side of the top of the feeding frame, and an output end of the pushing cylinder is connected to a pushing rack, which is arranged through the guide groove and is slidably connected to the guide groove;

[0017] A pusher block, the pusher block is connected to the output end of the pushing rack, the pusher block is slidably connected to the loading frame, and the loading frame pushes the catheter body to move;

[0018] A limiting protrusion is installed inside the feeding frame and is arranged away from the pushing cylinder. A feeding part opened inside the feeding frame is provided on the side of the limiting protrusion.

[0019] As a preferred solution of the present invention, the interior of the feeding frame is set to be hollow, and a plurality of the catheter tubes are stored and placed therein. A clamping assembly is provided on one side of the feeding portion, and a pushing assembly is provided on the other side of the feeding portion.

[0020] As a preferred solution of the present invention, the pushing assembly includes an external frame, which is installed on the side of the loading frame and located outside the loading part. A pushing cylinder is provided on the side of the external frame, and the output end of the pushing cylinder is connected to a pushing component, which pushes the catheter tube body to pass through the loading part and extend to the interior of the clamping assembly.

[0021] As a preferred embodiment of the present invention, the debugging feeding mechanism includes:

[0022] A loading slide rail is installed on the top of the equipment seat and is located on the side of the bottom frame. An electric slider is provided on the top of the loading slide rail, and a debugging frame is provided on the top of the electric slider;

[0023] The interior of the debugging frame is divided into two parts, an upper part and an lower part, by a partition. A set of rotating and telescopic components is provided inside the debugging frame, and a supporting disc is installed on the top of the rotating and telescopic components.

[0024] The rotary telescopic components are provided in two groups, and the other group of the rotary telescopic components is installed inside the console and is installed with a reaming pin through a cylinder clamp.

[0025] As a preferred embodiment of the present invention, the rotary telescopic assembly includes:

[0026] A hydraulic cylinder is installed inside the debugging frame and is located at the bottom of the partition, and the output end of the hydraulic cylinder is connected to a lifting plate;

[0027] A movable support rod is movably connected to the interior of the lifting plate and extends to the outside of the lifting plate. A supporting disc is installed on the top of the movable support rod. The left and right sides of the interior of the movable support rod are recessed inward to form a groove portion. The movable support rod is arranged to pass through the partition;

[0028] a first gear, the first gear being slidably connected to the outer side of the groove portion through an internal guide portion, the first gear being rotatably connected to the top of the partition, and the side surface of the first gear being meshedly connected to the second gear;

[0029] The second gear is connected to the output end of the servo motor, and the servo motor is installed on the inner side of the debugging frame;

[0030] Wherein, the movable support rod located outside the console is installed with a reaming pin through a cylinder clamp.

[0031] As a preferred embodiment of the present invention, the clamping assembly includes:

[0032] A support clamp, which is mounted on the top of the support disc by screws and is provided in two groups. The center of the top of the support clamp supports the catheter body, and DC motors are installed on both sides of the top of the support clamp;

[0033] A threaded rod, the threaded rod being connected to the output end of the DC motor and being rotatably connected to the top of the support clamp, the outer side of the threaded rod being threadedly connected to an extrusion clamp, and the extrusion clamp is located on the top of the support clamp;

[0034] A guide frame, the guide frame is mounted on the top of the support clamp and is located outside the threaded rod. The threaded rod is rotatably connected to the center of the top of the guide frame. The guide frame is slidably connected to the extrusion clamp;

[0035] Wherein, the extrusion clamp seat presses down and fixes the catheter body.

[0036] As a preferred solution of the present invention, the stretching and reducing assembly includes a stretching bracket, which is installed on the top of the equipment base. Stretching cylinders are installed on both sides of the top of the stretching bracket. The output end of the stretching cylinder is connected to a cylinder clamp, which clamps and fixes the catheter tube body after expansion.

[0037] The present invention provides a method for preparing a plastic interventional catheter, comprising the following steps:

[0038] S1. When preparing the catheter tubes that will form the interventional catheter, several cut catheter tubes of corresponding sizes are first placed inside the loading frame. The material is automatically pushed by a push cylinder driving a push block. Simultaneously, when the catheter tubes move to the side of the loading section, the push cylinder drives a push component to move, allowing the catheter tubes to pass through the loading section and move to the top of the support clamp. A robotic arm assists in gripping the catheter tubes, completing the stable placement of the catheter tubes.

[0039] S2. When the catheter tube body is located at the top of the support clamp, the DC motor drives the threaded rod to rotate, driving the extrusion clamp connected to the external thread of the threaded rod to press and move downward, thereby pressing and fixing the catheter tube body on the top of the support clamp. After that, the electric slider moves the catheter tube body to the inside of the reaming pin, and the reaming pin is driven to move and rotate by rotating the telescopic assembly to complete the reaming operation of the catheter tube body.

[0040] S3. The catheter tube body after hole expansion is moved to the side of the cylinder clamp at the output end of the stretching cylinder with the assistance of the manipulator. At this time, the cylinder clamp completes the clamping and fixing of the catheter tube body after hole expansion, and the operation of the stretching cylinder automatically stretches the catheter tube body after hole expansion from the outside to obtain a catheter tube body of corresponding length.

[0041] Compared with the existing technology, one or more of the above technical solutions have the following beneficial effects:

[0042] 1. This plastic interventional catheter and its preparation method: When the catheter body portion of the interventional catheter is processed and produced, the reaming pin for reaming the catheter body can be driven by a hydraulic cylinder to move the lifting plate, movable support rod, cylinder clamp and reaming pin at its output end, thereby continuously pushing the reaming pin to move. At the same time, the movable support rod that pushes the reaming pin to move can be driven by a servo motor to rotate the second gear, first gear, guide portion, groove portion, movable support rod, cylinder clamp and reaming pin at its output end. The movable support rod rotates synchronously with the movement of the reaming pin (performed on a set of movable support rods), thereby improving the accuracy of reaming the catheter body, making the inner wall of the catheter body smoother, and facilitating subsequent reprocessing (surface laser welding, outer layer photocuring cross-linking, etc.);

[0043] 2. This plastic interventional catheter and its preparation method, when the catheter tube portion of the interventional catheter is expanded, several catheter tubes to be expanded can be added to the interior of the loading frame respectively, and the pushing cylinder drives the output end pushing frame and the pushing block to move, so that the catheter tubes are moved to the side of the loading part in batches. Afterwards, the pushing cylinder drives the output end pushing component to move, so that the catheter tubes are automatically moved to the top of the support clamp seat, completing the automated catheter tube loading operation, improving the efficiency of the production and preparation of the interventional catheter, and eliminating the need for staff to assist in loading, thereby reducing costs;

[0044] 3. This plastic interventional catheter and its preparation method, when expanding the catheter body portion of the interventional catheter, can be driven by a DC motor to rotate the threaded rod at its output end, thereby driving the extrusion clamp seat connected to the threaded outer side of the threaded rod to move up and down, pressing down and fixing the catheter body on the top of the support clamp seat, ensuring that the catheter body will not shake during subsequent expansion, improving the stability of the catheter body during expansion, and further improving the accuracy of the catheter body after expansion;

[0045] 4. This plastic interventional catheter and its preparation method, when the catheter body portion of the interventional catheter is expanded, the servo motor can drive the second gear, the first gear, the guide portion, the groove portion, the movable support rod and the support disc at the output end thereof to rotate, so that the horizontal catheter body can be rotated to a vertical state, which facilitates the subsequent grasping and fixing of the expanded catheter body by a robot arm, and automatically moves the catheter body to the side of the cylinder clamp at the output end of the stretching cylinder. Thereafter, the cylinder clamp respectively clamps and fixes the two ends of the catheter body, and the stretching cylinder drives the cylinder clamp to move telescopically, thereby automatically stretching and shaping the catheter body, thereby completing the preliminary processing of the plastic interventional catheter;

[0046] 5. The plastic interventional catheter and its preparation method can automate the processing steps of loading, clamping, pushing, expanding and stretching the catheter body during the production and processing of the catheter body, thereby further improving the efficiency of the production and processing of the catheter body. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0048] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0049] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0050] Figure 2 It is a schematic structural diagram of the overall side view of the present invention;

[0051] Figure 3 It is a schematic structural diagram of the back side of the present invention as a whole;

[0052] Figure 4 is a schematic structural diagram of the interventional catheter of the present invention;

[0053] Figure 5 It is a structural schematic diagram of the feeding mechanism of the present invention;

[0054] Figure 6 It is a schematic structural diagram of a cross-section of the feeding mechanism of the present invention;

[0055] Figure 7 This is a schematic structural diagram of the connection between the support disc and the clamping assembly of the present invention;

[0056] Figure 8 It is a structural schematic diagram of the clamping assembly of the present invention;

[0057] Figure 9 It is a structural diagram of the debugging feeding mechanism of the present invention;

[0058] Figure 10 This is a schematic structural diagram of the connection between the hydraulic cylinder and the servo motor of the present invention;

[0059] Figure 11 This is a schematic diagram of the structure of the push assembly of the present invention connected through the cylinder clamp and the reaming pin;

[0060] Figure 12 It is a structural schematic diagram of the stretching and reducing diameter assembly of the present invention;

[0061] In the picture:

[0062] 10. Catheter body;

[0063] 20. Catheter socket;

[0064] 30. Equipment stand; 30a. Control console;

[0065] 40. Feeding mechanism; 401. Bottom frame; 402. Feeding frame; 403. Guide groove; 404. Pushing cylinder; 405. Pushing frame; 406. Pushing block; 407. Limiting protrusion; 408. Feeding part; 408a. External frame; 408b. Pushing cylinder; 408c. Pushing component;

[0066] 50. Debugging feeding mechanism; 501. Loading slide rail; 502. Electric slider; 503. Debugging frame; 504. Partition; 505. Rotating and telescopic assembly; 505a. Hydraulic cylinder; 505b. Lifting plate; 505c. Movable support rod; 505d. Groove; 505e. First gear; 505f. Guide; 505g. Second gear; 505h. Servo motor; 506. Support disc;

[0067] 60. Clamping assembly; 601. Support clamp; 602. DC motor; 603. Threaded rod; 604. Extrusion clamp; 605. Guide frame;

[0068] 70, reaming pin; 70i, cylinder fixture;

[0069] 80. Robotic arm;

[0070] 90. Stretch reducer assembly; 901. Stretch bracket; 902. Stretch cylinder. DETAILED DESCRIPTION

[0071] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0072] See also Figure 4 A plastic interventional catheter includes a catheter body 10 and a catheter socket 20. The catheter socket 20 is installed at one end of the catheter body 10, and the interior of the catheter body 10 is set to be hollow.

[0073] See also Figure 1 - Figure 12 A device for preparing a plastic interventional catheter includes a device base 30, a console 30a, a loading mechanism 40, a debugging and feeding mechanism 50, a clamping assembly 60, a reaming pin 70, a manipulator 80, and a stretching and reducing assembly 90; a console 30a is provided on one side of the top of the device base 30, a debugging and feeding mechanism 50 is provided on the side of the console 30a, and a loading mechanism 40 is provided on the side of the debugging and feeding mechanism 50 away from the console 30a. The loading mechanism 40 is installed at the top edge of the device base 30, and a plurality of catheter tubes are stored inside the loading mechanism 40. body 10, and pushes the catheter tube body 10 to move to the inside of the clamping assembly 60, and the clamping assembly 60 is installed on the top of the debugging feeding mechanism 50; wherein, the debugging feeding mechanism 50 pushes the catheter tube body 10 to move to the side of the reaming pin 70, and the reaming pin 70 performs reaming operation on the catheter tube body 10, and a manipulator 80 is also provided on the side of the debugging feeding mechanism 50, and the manipulator 80 grabs the reamed catheter tube body 10 and moves it to the top of the stretching reducing assembly 90; the stretching reducing assembly 90 is located on the side of the debugging feeding mechanism 50 and is arranged away from the manipulator 80.

[0074] The above working principle: When the catheter tube body 10 constituting the interventional catheter is produced and processed, the catheter tube body 10 after cutting needs to be expanded so that the interior of the catheter tube body 10 is hollow. At this time, the cut catheter tube bodies 10 are first placed inside the feeding mechanism 40 and automatically moved to the interior of the clamping assembly 60 through the feeding mechanism 40. Afterwards, the clamping assembly 60 clamps and fixes the catheter tube body 10 and moves to the side of the expansion pin 70 through the debugging feeding mechanism 50 at the bottom. The expansion pin 70 is extended and rotated to complete the automated expansion operation of the catheter tube body 10. Among them, the reaming pin 70 is driven to extend and rotate. On the same axis of the same structure, when the actual reaming is performed, it is more precise and the inner wall of the catheter tube body 10 is smoother. After the reaming is completed, the catheter tube body 10 can be grasped and fixed by the robot 80, moved to the interior of the stretching and reducing assembly 90, and the automated stretching and shaping operation is completed by the stretching and reducing assembly 90. Among them, the above operations are performed automatically and do not require manual operation assistance from the staff, which is more convenient. After the reaming and stretching are completed, the catheter tube body 10 can naturally enter the next step of processing and production (surface laser welding, outer layer photocuring cross-linking, etc.).

[0075] Specific reference Figure 5 and Figure 6 The feeding mechanism 40 includes a bottom frame 401, which is installed at the edge of the top of the equipment seat 30, and a feeding frame 402 is installed on the top of the bottom frame 401, and a guide groove 403 is provided at the top center of the feeding frame 402; a pushing cylinder 404, which is installed on one side of the top of the feeding frame 402, and the output end of the pushing cylinder 404 is connected to the pushing frame 405, which is arranged through the guide groove 403 and is slidably connected to the guide groove 403; a pushing block 406, which is connected to the output end of the pushing frame 405, and the pushing block 406 is slidably connected to the feeding frame 402, and the feeding frame 402 pushes the catheter tube body 10 to move; a limiting protrusion 407, which is installed inside the feeding frame 402 and is arranged away from the pushing cylinder 404, and the side of the limiting protrusion 407 is provided with a feeding part 408 opened inside the feeding frame 402.

[0076] In this embodiment, the interior of the loading frame 402 is set to be hollow, and a plurality of catheter tube bodies 10 are stored and placed therein. A clamping assembly 60 is provided on one side of the loading portion 408, and a pushing assembly is provided on the other side of the loading portion 408. Through the design of the pushing assembly, a plurality of catheter tube bodies 10 can be introduced into the interior of the clamping assembly 60 in batches, thereby realizing an automated loading operation of the catheter tube body 10.

[0077] The preparation equipment of the plastic interventional catheter of the present invention, when expanding the hole of the catheter tube body 10, first places several catheter tube bodies 10 into the interior of the loading frame 402 through the guide groove 403, and then, before expanding the hole, starts the pushing cylinder 404 through the control console 30a to operate, driving the pushing rack 405 connected to its output end to move, and then drives the pushing block 406 connected to the bottom of the pushing rack 405 to move, pushing the catheter tube body 10 to move, and pushing several catheter tube bodies 10 to the side of the limiting protrusion 407 and the loading part 408 respectively.

[0078] Specific reference Figure 5 and Figure 6 The pushing component includes an external frame 408a, which is installed on the side of the loading frame 402 and located outside the loading part 408. A pushing cylinder 408b is provided on the side of the external frame 408a. The output end of the pushing cylinder 408b is connected to a pushing component 408c. The pushing component 408c pushes the catheter tube body 10 through the loading part 408 and moves to the inside of the clamping component 60.

[0079] In the preparation equipment for the plastic interventional catheter of the present invention, when the catheter tube body 10 to be processed moves to the side of the loading part 408, the console 30a starts the pushing cylinder 408b to operate, driving the pushing component 408c connected to the output end of the pushing cylinder 408b to move, and then drives the catheter tube body 10 set on the side of the pushing component 408c to move, and moves to the inside of the clamping assembly 60.

[0080] Specific reference Figure 9 and Figure 10 The debugging feeding mechanism 50 includes a loading slide rail 501, which is installed on the top of the equipment base 30 and is located on the side of the bottom frame 401. An electric slider 502 is provided on the top of the loading slide rail 501, and a debugging frame 503 is provided on the top of the electric slider 502; wherein, the interior of the debugging frame 503 is divided into two parts, upper and lower, by a partition 504, and a group of rotating telescopic components 505 are provided inside the debugging frame 503, and a supporting disc 506 is installed on the top of the rotating telescopic component 505.

[0081] In this embodiment, another set of rotating and telescopic components 505 is installed inside the console 30a, and a reaming pin 70 is installed through a cylinder clamp 70i. The operation of the rotating and telescopic components 505 can drive the reaming pin 70 to rotate and move respectively, thereby automatically completing the reaming operation of the catheter tube body 10.

[0082] In the equipment for preparing the plastic interventional catheter of the present invention, the electric slider 502 can move outside the loading slide rail 501, and move the catheter tube body 10 clamped by the top of the electric slider 502 to the sides of the loading part 408 and the reaming pin 70, respectively, to complete the loading and reaming operations of the catheter tube body 10.

[0083] Specific reference Figure 9 、 Figure 10 and Figure 11 The rotating telescopic component 505 includes a hydraulic cylinder 505a, which is installed inside the debugging frame 503 and is located at the bottom of the partition 504. The output end of the hydraulic cylinder 505a is connected to the lifting plate 505b; a movable support rod 505c, which is movably connected to the inside of the lifting plate 505b and extends to the outside of the lifting plate 505b. A supporting disc 506 is installed on the top of the movable support rod 505c. The left and right sides of the movable support rod 505c are concave inward. The first gear 505e is slidably connected to the outside of the groove portion 505d through the internal guide portion 505f, and the first gear 505e is rotatably connected to the top of the partition 504. The side of the first gear 505e is meshed with the second gear 505g; the second gear 505g is connected to the output end of the servo motor 505h, and the servo motor 505h is installed on the inner side of the debugging frame 503.

[0084] In this embodiment, the movable support rod 505c located outside the console 30a is installed with a reaming pin 70 through a cylinder clamp 70i. The reaming pin 70 can be installed and fixed by the cylinder clamp 70i, and corresponding adjustments can be made for the reaming diameters of different catheter tube bodies 10.

[0085] The preparation device of the plastic interventional catheter of the present invention, when expanding the hole, the hydraulic cylinder 505a can drive the movable support rod 505c connected to the lifting plate 505b at its output end to move, adjust the position of the expansion pin 70 and the clamping assembly 60, and facilitate the uninterrupted pushing of the expansion pin 70 into the interior of the catheter tube body 10, and adjust the position of the clamping assembly 60 so that the expansion pin 70 and the catheter tube body 10 are on the same axis. When the movable support rod 505c moves, the servo motor 505h can drive the second output end of the movable support rod 505c to move. The gear 505g rotates to drive the first gear 505e, which is meshed with the side of the second gear 505g, to rotate. At this time, the rotation of the first gear 505e will drive the movable support rod 505c for telescopic movement to rotate through its inner guide portion 505f and the groove portion 505d. At this time, the rotation and movement of the reaming pin 70 are carried out on a group of movable support rods 505c, which is more precise when reaming. The operation of the two groups of servo motors 505h can be controlled by the console 30a.

[0086] Specific reference Figure 7 and Figure 8 The clamping assembly 60 includes a support clamp seat 601, which is installed on the top of the support disc 506 by screws, and is provided with two groups. The catheter tube body 10 is supported at the top center of the support clamp seat 601, and DC motor 602 is installed on both sides of the top of the support clamp seat 601; a threaded rod 603, the threaded rod 603 is connected to the output end of the DC motor 602, and is rotatably connected to the top of the support clamp seat 601, and the outer side of the threaded rod 603 is threadedly connected to the extrusion clamp seat 604, and the extrusion clamp seat 604 is located at the top of the support clamp seat 601; a guide frame 605, the guide frame 605 is installed on the top of the support clamp seat 601, and is located on the outer side of the threaded rod 603. The threaded rod 603 is rotatably connected at the top center of the guide frame 605, and the guide frame 605 and the extrusion clamp seat 604 are slidably connected.

[0087] In this embodiment, the extrusion clamp seat 604 presses down and fixes the catheter tube body 10 , and the extrusion clamp seat 604 can press down and fix the catheter tube body 10 to ensure stability when the catheter tube body 10 is expanded.

[0088] The equipment for preparing a plastic interventional catheter of the present invention can start the DC motor 602 to operate after the catheter tube body 10 moves to the top of the support clamp seat 601 through the console 30a1, thereby driving the threaded rod 603 at its output end to rotate, and then driving the extrusion clamp seat 604 connected to the outer thread of the threaded rod 603 to press down and move, thereby completing the installation and fixation of the catheter tube body 10, wherein the threaded rod 603 is rotatably connected to the support clamp seat 601, and the guide frame 605 limits the telescopic movement of the extrusion clamp seat 604.

[0089] Specific reference Figure 12 The stretching reducing assembly 90 includes a stretching bracket 901, which is installed on the top of the equipment base 30. Stretching cylinders 902 are installed on both sides of the top of the stretching bracket 901. The output end of the stretching cylinder 902 is connected to a cylinder clamp 70i, which clamps and fixes the catheter body 10 after expansion.

[0090] The equipment for preparing a plastic interventional catheter of the present invention can move the catheter tube body 10 to the side of the cylinder clamp 70i when stretching and shaping the catheter tube body 10 after expansion. The two sets of cylinder clamps 70i are designed to complete the clamping and fixation of the two ends of the catheter tube body 10. Afterwards, when stretching, the two sets of stretching cylinders 902 respectively drive the two sets of cylinder clamps 70i at their output ends to move, completing the stretching and shaping operation of the catheter tube body 10. When the catheter tube body 10 is actually stretched, it can be paired with a corresponding heating device to further improve the effect of stretching the catheter tube body 10.

[0091] See also Figure 1 - Figure 12 A method for preparing a plastic interventional catheter comprises the following steps:

[0092] S1. When preparing the catheter tube 10 that constitutes the interventional catheter, first, several catheter tubes 10 of corresponding sizes after cutting are placed inside the loading frame 402. The pushing cylinder 404 drives the pushing block 406 to move, thereby completing the automated material pushing. At the same time, when the catheter tube 10 moves to the side of the loading portion 408, the pushing cylinder 408b drives the pushing member 408c to move, so that the catheter tube 10 passes through the loading portion 408 and moves to the top of the support clamp 601. The robot 80 assists in clamping the catheter tube 10, completing the stable placement of the catheter tube 10.

[0093] S2. When the catheter tube body 10 is located on the top of the support clamp 601, the DC motor 602 drives the threaded rod 603 to rotate, driving the extrusion clamp 604 connected to the external thread of the threaded rod 603 to press and move downward, thereby pressing and fixing the catheter tube body 10 on the top of the support clamp 601. Then, the electric slider 502 moves the catheter tube body 10 to the inside of the reaming pin 70, and the rotating telescopic assembly 505 drives the reaming pin 70 to move and rotate, thereby completing the reaming operation of the catheter tube body 10.

[0094] S3. The catheter tube body 10 after hole expansion is moved to the side of the cylinder clamp 70i at the output end of the stretching cylinder 902 through the auxiliary operation of the manipulator 80. At this time, the cylinder clamp 70i completes the clamping and fixing of the catheter tube body 10 after hole expansion, and the operation of the stretching cylinder 902 automatically stretches the catheter tube body 10 after hole expansion from the outside to obtain a catheter tube body 10 of corresponding length.

[0095] In the present invention, the plastic interventional catheter is a "real-time clinical plastic medical interventional catheter" independently developed by Qishi Medical. It is based on the company's mature metal heat treatment and cold treatment modification and shaping technology. In addition to relying on the supporting performance of the pebax polymer material on the outer layer of the interventional catheter, it also focuses on the braiding heat treatment of the middle layer of the catheter and the cold treatment and process implementation capabilities of the middle layer winding spring.

[0096] Furthermore, the high-precision braided catheter mesh can be removed and, after degreasing and cleaning, heat-treated twice in an ultra-vacuum heat treatment furnace, the mesh in the portion of the catheter requiring clinical plasticity is processed according to the required process to achieve final plasticity and maintain the final shape. The finished stainless steel wire is then subjected to an ultra-high frequency cold setting process, where the plasticity portion of the catheter is instantaneously set using ultra-high frequency. This combination of processes allows the distal end of the rheologically formed catheter to be shaped in real time during clinical use, tailored to the individual patient's physiology, and maintains its shape after entry into the body.

[0097] The above solution can completely solve the problem that catheters on the current market are difficult to shape in real time or the catheter cannot maintain the shaped structure when it returns to the body after being shaped, making it difficult to achieve superselection of distal blood vessels to reach the actual lesion area during surgery.

[0098] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A device for preparing a plastic interventional catheter, characterized by: The plastic interventional catheter comprises a catheter body (10) and a catheter socket (20), one end of the catheter body (10) is mounted with the catheter socket (20), and the interior of the catheter body (10) is configured to be hollow. The manufacturing device of the plastic interventional catheter comprises a device base (30), a console (30a), a loading mechanism (40), a debugging and feeding mechanism (50), a clamping assembly (60), a reaming pin (70), a manipulator (80), and a stretching and reducing assembly (90); A control console (30a) is provided on one side of the top of the equipment seat (30), a debugging feeding mechanism (50) is provided on the side of the control console (30a), a loading mechanism (40) is provided on the side of the debugging feeding mechanism (50) away from the control console (30a), the loading mechanism (40) is installed at the top edge of the equipment seat (30), a plurality of conduit tube bodies (10) are stored inside the loading mechanism (40), and the conduit tube bodies (10) are pushed to move to the inside of the clamping assembly (60), and the clamping assembly (60) is installed on the top of the debugging feeding mechanism (50); The debugging feeding mechanism (50) pushes the catheter tube body (10) to move to the side of the reaming pin (70), and the reaming pin (70) performs reaming operation on the catheter tube body (10) through the expansion and contraction and rotation of the reaming pin (70). A manipulator (80) is also provided on the side of the debugging feeding mechanism (50), and the manipulator (80) grabs the reamed catheter tube body (10) and moves it to the top of the stretching and reducing assembly (90); The stretching and reducing diameter assembly (90) is located on the side of the debugging and feeding mechanism (50) and is arranged away from the manipulator (80). Wherein, the clamping assembly (60) includes: A support clamp (601), the support clamp (601) being mounted on the top of the support disc (506) by screws, and being provided in two groups, the catheter tube (10) being supported at the center of the top of the support clamp (601), and DC motors (602) being mounted on both sides of the top of the support clamp (601); a threaded rod (603), the threaded rod (603) being connected to the output end of the DC motor (602) and being rotatably connected to the top of the support clamp (601); the outer side of the threaded rod (603) being threadedly connected to an extrusion clamp (604), and the extrusion clamp (604) being located on the top of the support clamp (601); A guide frame (605), the guide frame (605) is mounted on the top of the support clamp seat (601) and is located outside the threaded rod (603), the threaded rod (603) is rotatably connected to the top center of the guide frame (605), and the guide frame (605) and the extrusion clamp seat (604) are slidably connected; The extrusion clamp seat (604) presses down and fixes the catheter tube body (10).

2. The apparatus for preparing a plastic interventional catheter according to claim 1, characterized in that: The feeding mechanism (40) comprises: A bottom frame (401), the bottom frame (401) is installed at the edge of the top of the equipment base (30), a loading frame (402) is installed on the top of the bottom frame (401), and a guide groove (403) is opened at the center of the top of the loading frame (402); A pushing cylinder (404), the pushing cylinder (404) is installed on one side of the top of the loading frame (402), the output end of the pushing cylinder (404) is connected to a pushing rack (405), the pushing rack (405) is arranged to pass through the guide groove (403) and is slidably connected to the guide groove (403); A pushing block (406), the pushing block (406) is connected to the output end of the pushing frame (405), the pushing block (406) is slidably connected to the loading frame (402), and the loading frame (402) pushes the catheter tube body (10) to move; A limiting protrusion (407) is installed inside the feeding frame (402) and is arranged away from the pushing cylinder (404). A feeding portion (408) opened inside the feeding frame (402) is provided on the side of the limiting protrusion (407).

3. The apparatus for preparing a plastic interventional catheter according to claim 2, characterized in that: The interior of the feeding frame (402) is configured to be hollow, and a plurality of the catheter tube bodies (10) are stored and placed therein. A clamping assembly (60) is provided on one side of the feeding portion (408), and a pushing assembly is provided on the other side of the feeding portion (408).

4. The device for preparing a plastic interventional catheter according to claim 3, characterized in that: The pushing assembly includes an external frame (408a), which is installed on the side of the loading frame (402) and is located outside the loading part (408). A pushing cylinder (408b) is provided on the side of the external frame (408a), and the output end of the pushing cylinder (408b) is connected to a pushing component (408c). The pushing component (408c) pushes the catheter tube body (10) through the loading part (408) and extends to the interior of the clamping assembly (60).

5. The device for preparing a plastic interventional catheter according to claim 2, characterized in that: The debugging feeding mechanism (50) includes: A loading slide rail (501), the loading slide rail (501) is installed on the top of the equipment base (30) and is located on the side of the bottom frame (401), an electric slider (502) is provided on the top of the loading slide rail (501), and a debugging frame (503) is provided on the top of the electric slider (502); The interior of the debugging frame (503) is divided into upper and lower parts by a partition (504), a group of rotating telescopic components (505) are provided inside the debugging frame (503), and a supporting disc (506) is installed on the top of the rotating telescopic components (505); Two groups of the rotating and telescopic components (505) are provided, and the other group of the rotating and telescopic components (505) is installed inside the console (30a) and is equipped with a reaming pin (70) via a cylinder clamp (70i).

6. The device for preparing a plastic interventional catheter according to claim 5, characterized in that: The rotating and telescopic assembly (505) comprises: A hydraulic cylinder (505a), the hydraulic cylinder (505a) is installed inside the debugging frame (503) and is located at the bottom of the partition (504), and the output end of the hydraulic cylinder (505a) is connected to a lifting plate (505b); A movable support rod (505c), the movable support rod (505c) is movably connected to the inside of the lifting plate (505b) and extends to the outside of the lifting plate (505b), a supporting disc (506) is installed on the top of the movable support rod (505c), the left and right sides of the inside of the movable support rod (505c) are recessed inward to form a groove portion (505d), and the movable support rod (505c) is arranged to pass through the partition (504); a first gear (505e), the first gear (505e) being slidably connected to the outside of the groove portion (505d) via an internal guide portion (505f), the first gear (505e) being rotatably connected to the top of the partition (504), and the side surface of the first gear (505e) being meshedly connected to the second gear (505g); The second gear (505g) is connected to the output end of the servo motor (505h), and the servo motor (505h) is installed on the inner side of the debugging frame (503); Wherein, a movable support rod (505c) located outside the console (30a) is mounted with a reaming pin (70) via a cylinder clamp (70i).

7. The device for preparing a plastic interventional catheter according to claim 1, characterized in that: The stretching and reducing assembly (90) includes a stretching bracket (901), which is installed on the top of the equipment base (30). Stretching cylinders (902) are installed on both sides of the top of the stretching bracket (901). The output end of the stretching cylinder (902) is connected to a cylinder clamp (70i), and the cylinder clamp (70i) clamps and fixes the catheter tube body (10) after expansion.

8. A method for preparing a plastic interventional catheter, the method being directed to the device for preparing the plastic interventional catheter according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. When preparing the catheter tube body (10) constituting the interventional catheter, first, a plurality of catheter tube bodies (10) of corresponding sizes after cutting are placed inside the loading frame (402), and the pushing cylinder (404) drives the pushing block (406) to move, thereby completing the automatic pushing. At the same time, when the catheter tube body (10) moves to the side of the loading part (408), the pushing cylinder (408b) drives the pushing component (408c) to move, so that the catheter tube body (10) passes through the loading part (408) and moves to the top of the support clamp (601), wherein the manipulator (80) assists in clamping the catheter tube body (10) to complete the stable placement operation of the catheter tube body (10); S2. When the catheter tube body (10) is located at the top of the support clamp seat (601), the DC motor (602) drives the threaded rod (603) to rotate, driving the extrusion clamp seat (604) connected to the external thread of the threaded rod (603) to press down and move, thereby pressing down and fixing the catheter tube body (10) at the top of the support clamp seat (601). After that, the electric slider (502) moves the catheter tube body (10) to the inside of the reaming pin (70), and drives the reaming pin (70) to move and rotate by rotating the telescopic assembly (505), thereby completing the reaming operation of the catheter tube body (10); S3. The catheter tube body (10) after the hole expansion is moved to the side of the cylinder clamp (70i) at the output end of the stretching cylinder (902) through the auxiliary operation of the manipulator (80). At this time, the cylinder clamp (70i) completes the clamping and fixing of the catheter tube body (10) after the hole expansion, and the operation of the stretching cylinder (902) automatically stretches the catheter tube body (10) after the hole expansion from the outside to obtain a catheter tube body (10) of the corresponding length.

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