Plastic interventional catheter and preparation method thereof

Abstract

The invention discloses a plastic interventional catheter and a preparation method thereof, and relates to the related technical field of interventional catheter preparation, and the preparation equipment of the plastic interventional catheter comprises an equipment base, a console, a feeding mechanism, a debugging and feeding mechanism, a clamping assembly, a reaming pin, a manipulator and a stretching and reducing assembly; a control table is arranged on one side of the top of the equipment base, and a debugging feeding mechanism is arranged on the side face of the control table. According to the broaching pin for broaching the catheter body, when the catheter body part of an interventional catheter is machined and produced, the broaching pin for broaching the catheter body can synchronously rotate while moving, so that the broaching precision of the catheter body is improved, the inner wall of the catheter body is smoother, subsequent remachining is facilitated, and the machining efficiency is improved. And meanwhile, automatic catheter body feeding operation can be completed, the production and preparation efficiency of the interventional catheter is improved, auxiliary feeding of workers is not needed, and the cost is reduced.

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, which 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 surface of the box; in this invention, the cooperation of 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 the work efficiency.

[0004] However, the catheter preparation device has the following defects when used: 1. When the existing catheter preparation equipment is producing and processing the catheter (interventional catheter), it is necessary to expand the inside of the catheter to make the catheter hollow. When the general catheter expansion equipment is actually expanding the hole, the expansion tool (expanding pin, etc.) used for expansion is rotated, and the catheter to be expanded is moved to complete the expansion operation. At this time, the axis position of the rotating and moving catheter is running on different structures during the above process. In actual processing, the error is large, resulting in a rough expansion surface; 2. When the existing catheter preparation equipment is producing and processing catheters (interventional catheters), the staff needs to manually operate the expansion of the catheter during the actual material expansion to place the catheter to be expanded on the corresponding hydraulic catheter positioning mechanism, which is not convenient, has high labor costs, and does not meet the automation needs of modern factories. Summary of the invention

[0005] 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-mentioned background technology.

[0006] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme: 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.

[0007] The present invention provides a device for preparing a plastic interventional catheter, comprising a device seat, a control console, a loading mechanism, a debugging and feeding mechanism, a clamping component, a reaming pin, a manipulator and a stretching and reducing component; A control console is provided on one side of the top of the equipment seat, a debugging feeding mechanism is provided on the side of the control console, a loading mechanism is provided on the side of the debugging feeding mechanism away from the control console, the loading mechanism is installed at the top edge of the equipment seat, a plurality of conduit tube bodies are stored inside the loading mechanism, and the conduit tube bodies are pushed to move to the inside of the clamping assembly, and the clamping assembly is installed on the top of the debugging feeding mechanism; The debugging 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 feeding mechanism, and the manipulator grabs the reamed catheter body and moves it to the top of the stretching and reducing assembly. The stretching and reducing diameter component is located on the side of the debugging and feeding mechanism and is arranged away from the manipulator.

[0008] As a preferred embodiment of the present invention, the feeding mechanism comprises: A bottom frame, the bottom frame is installed at the edge of the top of the equipment seat, 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; A pushing cylinder, the pushing cylinder is installed on one side of the top of the feeding frame, the output end of the pushing cylinder is connected to a pushing rack, the pushing rack passes through the guide groove and is slidably connected to the guide groove; A pushing block, the pushing block is connected to the output end of the pushing frame, the pushing block is slidably connected to the loading frame, and the loading frame pushes the catheter body to move; 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 arranged on the side of the limiting protrusion.

[0009] As a preferred solution of the present invention, the interior of the feeding frame is configured to be hollow, and a plurality of the catheter tube bodies 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.

[0010] As a preferred embodiment of the present invention, the pushing assembly includes an external frame, which is installed on the side of the feeding frame and located outside the feeding part. A pushing cylinder is arranged 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 feeding part and extend to the interior of the clamping assembly.

[0011] As a preferred embodiment of the present invention, the debugging feeding mechanism comprises: A loading slide rail, the 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 arranged on the top of the loading slide rail, and a debugging frame is arranged on the top of the electric slider; 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 arranged inside the debugging frame, and a supporting disc is installed on the top of the rotating and telescopic components. The rotating and telescopic components are provided in two groups, and the other group of the rotating and telescopic components is installed inside the console and is installed with a reaming pin through a cylinder clamp.

[0012] As a preferred embodiment of the present invention, the rotary telescopic assembly comprises: A hydraulic cylinder, which is installed inside the debugging frame and located at the bottom of the partition, and the output end of the hydraulic cylinder is connected to a lifting plate; A movable support rod, the movable support rod is movably connected to the inside 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 inside of the movable support rod are recessed inward to form a groove portion, and the movable support rod is arranged through the partition; A first gear, wherein the first gear is slidably connected to the outer side of the groove portion through an internal guide portion, the first gear is rotatably connected to the top of the partition, and the side surface of the first gear is meshedly connected to the second gear; 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; Wherein, the movable support rod located outside the console is installed with a reaming pin through a cylinder clamp.

[0013] As a preferred embodiment of the present invention, the clamping assembly comprises: A support clamp seat, which is installed on the top of the support disc by screws, and is provided with two groups, a catheter body is supported at the center of the top of the support clamp seat, and DC motors are installed on both sides of the top of the support clamp seat; A threaded rod, the threaded rod is connected to the output end of the DC motor and is rotatably connected to the top of the support clamp seat, the outer side of the threaded rod is threadedly connected to a pressing clamp seat, and the pressing clamp seat is located at the top of the support clamp seat; A guide frame, the guide frame is installed on the top of the support clamp seat and is located outside the threaded rod. The threaded rod is rotatably connected at the center of the top of the guide frame. The guide frame is slidably connected to the extrusion clamp seat. Wherein, the extrusion clamp seat presses down and fixes the catheter body.

[0014] As a preferred embodiment of the present invention, the stretching variable diameter 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, and the cylinder clamp clamps and fixes the catheter body after expansion.

[0015] The present invention provides a method for preparing a plastic interventional catheter, comprising the following steps: S1. When preparing the catheter tube body constituting the interventional catheter, firstly, a plurality of catheter tube bodies of corresponding sizes after cutting are placed inside the loading frame, and the pushing cylinder drives the pushing block to move, so as to complete the automatic material pushing. At the same time, when the catheter tube body moves to the side of the loading part, the pushing cylinder drives the pushing component to move, so that the catheter tube body passes through the loading part and moves to the top of the supporting clamp seat, wherein the manipulator assists in clamping the catheter tube body to complete the stable placement operation of the catheter tube body; S2. When the catheter body is located at the top of the support clamp seat, the DC motor drives the threaded rod to rotate, driving the extrusion clamp seat connected to the external thread of the threaded rod to press and move downward, and the catheter body on the top of the support clamp seat is pressed down and fixed. After that, the electric slider moves the catheter body to the inside of the reaming pin, and drives the reaming pin to move and rotate by rotating the telescopic assembly to complete the reaming operation of the catheter body. S3. The catheter 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 body after hole expansion, and the operation of the stretching cylinder automatically stretches the catheter body after hole expansion from the outside to obtain a catheter body of corresponding length.

[0016] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects: 1. The plastic interventional catheter and its preparation method, when the catheter body part 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 the output end, and the reaming pin is pushed to move continuously. 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, the first gear, the guide part, the groove part, the movable support rod, the cylinder clamp and the reaming pin at the output end, and the reaming pin is rotated synchronously while the reaming pin moves (on a group 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.); 2. The plastic interventional catheter and its preparation method, when the catheter body part of the interventional catheter is expanded, several catheter bodies to be expanded can be added to the inside 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 bodies are moved to the side of the loading part in batches, and then the pushing cylinder drives the output end pushing component to move, so that the catheter body is automatically moved to the top of the support clamp seat, and the automated catheter body loading operation is completed, thereby improving the efficiency of the production and preparation of the interventional catheter, and no staff is required to assist in loading, thereby reducing costs; 3. The plastic interventional catheter and its preparation method can drive the output end threaded rod of the interventional catheter to rotate by a DC motor, so as to drive the extrusion clamp seat connected to the outer thread of the threaded rod to move up and down, and press down and fix the catheter body on the top of the support clamp seat, so as to ensure that the catheter body will not shake when the hole of the catheter body is subsequently expanded, thereby improving the stability of the catheter body when expanding the hole, and further improving the accuracy of the catheter body after expansion; 4. The plastic interventional catheter and its preparation method, when the catheter body of the interventional catheter is expanded, the servo motor can drive the second gear, the first gear, the guide part, the groove part, the movable support rod and the support disc at the output end to rotate, so that the horizontal catheter body can be rotated to a vertical state, which is convenient for the subsequent manipulator to grasp and fix the catheter body after expansion, and automatically move the catheter body to the side of the cylinder clamp at the output end of the stretching cylinder. After that, the cylinder clamp clamps and fixes the two ends of the catheter body respectively, and the stretching cylinder drives the cylinder clamp to move telescopically, so as to automatically stretch and shape the catheter body, and complete the preliminary processing of the plastic interventional catheter; 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 that constitutes the interventional catheter, thereby further improving the efficiency of the production and processing of the catheter body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings in the specification, 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.

[0018] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic structural diagram of the overall side view of the present invention; Figure 3 It is a schematic structural diagram of the overall back side of the present invention; Figure 4 is a schematic diagram of the structure of the interventional catheter of the present invention; Figure 5 It is a structural schematic diagram of the feeding mechanism of the present invention; Figure 6 It is a schematic structural diagram of a cross-section of a feeding mechanism of the present invention; Figure 7 It is a schematic structural diagram of the connection between the support disc and the clamping assembly of the present invention; Figure 8 is a schematic structural diagram of the clamping assembly of the present invention; Fig. 9 It is a structural schematic diagram of the debugging feeding mechanism of the present invention; Fig.10 It is a structural schematic diagram of the connection between the hydraulic cylinder and the servo motor of the present invention; Fig.11 It is a schematic diagram of the structure in which the push assembly of the present invention is connected through a cylinder fixture and a reaming pin; Fig.12 It is a structural schematic diagram of the stretching and diameter-changing assembly of the present invention; In the figure: 10. Catheter body; 20. Catheter socket; 30. Equipment seat; 30a. Control console; 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; 50. Debugging feeding mechanism; 501. Loading slide rail; 502. Electric slider; 503. Debugging frame; 504. Partition plate; 505. Rotating telescopic assembly; 505a. Hydraulic cylinder; 505b. Lifting plate; 505c. Active support rod; 505d. Groove portion; 505e. First gear; 505f. Guide portion; 505g. Second gear; 505h. Servo motor; 506. Support disc; 60. Clamping assembly; 601. Support clamp seat; 602. DC motor; 603. Threaded rod; 604. Extrusion clamp seat; 605. Guide frame; 70, expansion pin; 70i, cylinder fixture; 80. Robotic arm; 90. stretching reducer assembly; 901. stretching bracket; 902. stretching cylinder. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0021] 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.

[0022] See also Figure 1 - Fig.12A preparation device for a plastic interventional catheter comprises an equipment seat 30, a control console 30a, a feeding mechanism 40, a debugging 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 arranged on one side of the top of the equipment seat 30, a debugging feeding mechanism 50 is arranged on the side of the control console 30a, a feeding mechanism 40 is arranged on the side of the debugging feeding mechanism 50 away from the control console 30a, the feeding mechanism 40 is installed at the top edge of the equipment seat 30, and a plurality of catheter tubes are stored inside the feeding mechanism 40 The debugging feeding mechanism 50 pushes the catheter 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 body 10 to move to the side of the reaming pin 70, and the reaming pin 70 performs reaming operation on the catheter body 10. A manipulator 80 is also provided on the side of the debugging feeding mechanism 50, and the manipulator 80 grabs the reamed catheter 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.

[0023] 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 inside of the catheter tube body 10 is hollow. At this time, the several cut catheter tube bodies 10 are first placed inside the feeding mechanism 40, and automatically moved to the inside of the clamping assembly 60 through the feeding mechanism 40. After that, 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 manipulator 80, moved to the inside of the stretching and reducing assembly 90, and the automated stretching and shaping operation is completed by the stretching and reducing assembly 90. The above operation is performed automatically without the need for manual operation assistance by the staff, which is more convenient. After the reaming and stretching, the catheter tube body 10 can naturally enter the next step of processing and production (surface laser welding, outer layer photocuring cross-linking, etc.).

[0024] Specific reference Figure 5 and Figure 6The feeding mechanism 40 includes a bottom frame 401, which is installed at the edge of the top of the equipment seat 30, a feeding frame 402 is installed on the top of the bottom frame 401, and a guide groove 403 is opened 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, and the pushing frame 405 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.

[0025] 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 set on one side of the loading portion 408, and a pushing assembly is set 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 the automated loading operation of the catheter tube bodies 10.

[0026] The preparation equipment of the plastic interventional catheter of the present invention, when expanding the hole of the catheter tube body 10, firstly places a plurality of 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 drive 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, pushes the catheter tube body 10 to move, and pushes the plurality of catheter tube bodies 10 to the sides of the limiting protrusion 407 and the loading part 408 respectively.

[0027] 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 set 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 to pass through the loading part 408 and move to the inside of the clamping component 60.

[0028] In the preparation equipment of 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 control 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 to the inside of the clamping assembly 60.

[0029] Specific reference Fig. 9 and Fig.10 The debugging feeding mechanism 50 includes a loading slide rail 501, which is installed on the top of the equipment base 30 and located on the side of the bottom frame 401. An electric slider 502 is arranged on the top of the loading slide rail 501, and a debugging frame 503 is arranged on the top of the electric slider 502; wherein, the interior of the debugging frame 503 is divided into two parts, an upper part and an lower part, by a partition plate 504, a group of rotating telescopic components 505 are arranged inside the debugging frame 503, and a supporting disc 506 is installed on the top of the rotating telescopic components 505.

[0030] 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.

[0031] 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 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 body 10.

[0032] Specific reference Fig. 9 , Fig.10 and Fig.11The rotating telescopic assembly 505 includes a hydraulic cylinder 505a, which is installed inside the debugging frame 503 and 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 movable support rod 505c is arranged through the partition 504; the first gear 505e is slidably connected to the outer side of the groove portion 505d through the internal guide portion 505f, the first gear 505e is rotatably connected to the top of the partition 504, and the side of the first gear 505e is meshedly connected 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.

[0033] 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 to the reaming diameters of different catheter tube bodies 10.

[0034] In 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 to the inside of the catheter body 10, and adjust the position of the clamping assembly 60 so that the expansion pin 70 and the catheter 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 rotation of gear 505g drives 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 that performs 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 performed on a group of movable support rods 505c, which makes the reaming more precise. The operation of the two groups of servo motors 505h can be regulated by the control console 30a.

[0035] Specific reference Figure 7 and Figure 8The 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 are 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 top center of the guide frame 605 is rotatably connected to the threaded rod 603, and the guide frame 605 and the extrusion clamp seat 604 are slidably connected.

[0036] In this embodiment, the extrusion clamp seat 604 presses down and fixes the catheter body 10 . The extrusion clamp seat 604 can press down and fix the catheter body 10 , thereby ensuring stability when the catheter body 10 is expanded.

[0037] The equipment for preparing the plastic interventional catheter of the present invention can start the DC motor 602 to operate after the catheter body 10 moves to the top of the support clamp seat 601 through the control console 30a1, thereby driving the threaded rod 603 at its output end to rotate, and then driving the extrusion clamp seat 604 threadedly connected to the outer side of the threaded rod 603 to move downward, thereby completing the installation and fixation of the catheter 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.

[0038] Specific reference Fig.12 The stretching reducer assembly 90 includes a stretching bracket 901, which is installed on the top of the equipment seat 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 body 10 after expansion.

[0039] The equipment for preparing a plastic interventional catheter of the present invention can move the catheter body 10 to the side of the cylinder clamp 70i when stretching and shaping the catheter body 10 after expansion. The two sets of cylinder clamps 70i are designed to clamp and fix the two ends of the catheter 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, thereby completing the stretching and shaping operation of the catheter body 10. When the catheter body 10 is actually stretched, it can be paired with a corresponding heating device to further improve the effect of stretching the catheter body 10.

[0040] See also Figure 1 - Fig.12, a method for preparing a plastic interventional catheter, comprising the following steps: S1. When preparing the catheter tube body 10 constituting the interventional catheter, firstly, 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 material pushing. Meanwhile, 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 supporting clamp seat 601, wherein the manipulator 80 assists in clamping the catheter tube body 10, thereby completing 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 and move downward, and the catheter tube body 10 on the top of the support clamp seat 601 is pressed down and fixed. 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 body 10 after hole expansion is moved to the side of the cylinder clamp 70i at the output end of the stretching cylinder 902 with the assistance of the manipulator 80. At this time, the cylinder clamp 70i completes the clamping and fixing of the catheter body 10 after hole expansion, and the operation of the stretching cylinder 902 automatically stretches the catheter body 10 after hole expansion to obtain a catheter body 10 of corresponding length.

[0041] In the present invention, the plastic interventional catheter is a "real-time clinical plastic medical interventional catheter" independently developed by Qishi Medical, which 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 pays more attention to the braiding heat treatment of the middle layer of the catheter and the cold treatment and process realization capabilities of the middle layer winding spring.

[0042] In addition, the high-precision braided catheter mesh can be taken out, degreased and cleaned, and then an ultra-vacuum heat treatment furnace is used to heat treat the braided mesh of the catheter part that needs to be clinically plasticized twice according to the required process to achieve the final catheter plasticity and maintain the plasticized shape. The stainless steel wire winding is then processed using an ultra-high frequency cold shaping process to complete the ultra-high frequency instant shaping of the catheter part that needs to be plasticized. The distal end of the catheter that has been rheoformed can be shaped on-site in real time according to the different physiological structures of each patient during clinical use, and can still maintain its shape after entering the body.

[0043] 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 distal vascular superselection to reach the actual lesion area during surgery.

[0044] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plastic interventional catheter, characterized in that: It comprises a catheter body (10) and a catheter socket (20); one end of the catheter body (10) is mounted with the catheter socket (20); the interior of the catheter body (10) is arranged to be hollow.

2. A device for preparing a plastic interventional catheter, characterized in that: It comprises an equipment base (30), a control console (30a), a loading mechanism (40), a debugging 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 disposed on one side of the top of the equipment seat (30), a debugging feeding mechanism (50) is disposed on the side of the control console (30a), a loading mechanism (40) is disposed 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 a 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). 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 reducer assembly (90); The stretching diameter-changing component (90) is located on the side of the debugging and feeding mechanism (50) and is arranged away from the robot arm (80).

3. The device for preparing a plastic interventional catheter according to claim 2, characterized in that: The feeding mechanism (40) comprises: A bottom frame (401), the bottom frame (401) being mounted on the edge of the top of the equipment base (30), a loading frame (402) being mounted on the top of the bottom frame (401), and a guide groove (403) being provided at the top center of the loading frame (402); A pushing cylinder (404), the pushing cylinder (404) being installed on one side of the top of the loading frame (402), the output end of the pushing cylinder (404) being connected to a pushing frame (405), the pushing frame (405) being arranged to penetrate the guide groove (403) and being 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 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 arranged on the side of the limiting protrusion (407).

4. The device for preparing a plastic interventional catheter according to claim 3, characterized in that: The interior of the feeding frame (402) is configured to be hollow and stores a plurality of the catheter tube bodies (10). 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).

5. The device for preparing a plastic interventional catheter according to claim 4, characterized in that: The pushing assembly includes an external frame (408a), which is installed on the side of the feeding frame (402) and is located outside the feeding 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) to pass through the feeding part (408) and extend to the interior of the clamping assembly (60).

6. The device for preparing a plastic interventional catheter according to claim 3, characterized in that: The debugging and feeding mechanism (50) comprises: A loading slide rail (501), the loading slide rail (501) is installed on the top of the equipment seat (30) and is located on the side of the bottom frame (401), an electric slider (502) is arranged on the top of the loading slide rail (501), and a debugging frame (503) is arranged on the top of the electric slider (502); The interior of the debugging frame (503) is divided into two parts, an upper part and an lower part, by a partition (504); a group of rotating telescopic components (505) are arranged 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 another 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).

7. The device for preparing a plastic interventional catheter according to claim 6, characterized in that: The rotating and telescopic assembly (505) comprises: A hydraulic cylinder (505a), the hydraulic cylinder (505a) being installed inside the debugging frame (503) and located at the bottom of the partition (504), and the output end of the hydraulic cylinder (505a) being 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 inwards to form a groove portion (505d), and the movable support rod (505c) is arranged to pass through the partition plate (504); a first gear (505e), the first gear (505e) being slidably connected to the outer side 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 meshingly 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).

8. The device for preparing a plastic interventional catheter according to claim 7, characterized in that: The clamping assembly (60) comprises: A support clamp seat (601), the support clamp seat (601) being mounted on the top of the support disc (506) by means of screws, and being provided with two groups, the catheter body (10) being supported at the top center of the support clamp seat (601), and DC motors (602) being mounted on both sides of the top of the support clamp seat (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 seat (601); an outer side of the threaded rod (603) being threadedly connected to a pressing clamp seat (604), and the pressing clamp seat (604) being located at the top of the support clamp seat (601); A guide frame (605), the guide frame (605) being mounted on the top of the support clamp seat (601) and being located outside the threaded rod (603), the threaded rod (603) being rotatably connected at the top center of the guide frame (605), and the guide frame (605) and the extrusion clamp seat (604) being slidably connected; Wherein, the pressing clamp seat (604) presses down and fixes the catheter body (10).

9. The device for preparing a plastic interventional catheter according to claim 2, characterized in that: The stretching diameter-changing assembly (90) comprises a stretching bracket (901), the stretching bracket (901) being mounted on the top of the equipment seat (30), stretching cylinders (902) being mounted on both sides of the top of the stretching bracket (901), the output end of the stretching cylinder (902) being connected to a cylinder clamp (70i), and the cylinder clamp (70i) clamps and fixes the catheter body (10) after expansion.

10. A method for preparing a plastic interventional catheter, the method for preparing a plastic interventional catheter according to any one of claims 2 to 9, characterized in that: The following steps are involved: S1. When preparing the catheter tube body (10) constituting the interventional catheter, firstly, 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 supporting clamp seat (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 move downward, 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 hole expansion is moved to the side of the cylinder clamp (70i) at the output end of the stretching cylinder (902) with the assistance 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 to obtain a catheter tube body (10) of corresponding length.

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