A fully automatic medical spring winding device

Abstract

The application provides a full-automatic medical spring winding device, which comprises a base, two fixing members for fixing a reference steel wire, a sliding seat slidingly arranged on the base, and a winding assembly arranged on the sliding seat and used for mounting a plurality of metal wire cores and winding the metal wire cores on the reference steel wire in sequence. The winding assembly comprises a plurality of winding rollers, a through hole is formed in the winding assembly, the reference steel wire passes through the through hole, the winding rollers are circumferentially distributed around the axis of the through hole, and the winding rollers are used for mounting the metal wire cores. A plurality of torsion adjusting mechanisms are arranged between the through hole and the winding rollers, the torsion adjusting mechanisms correspond to the winding rollers one by one, and the torsion adjusting mechanisms are used for adjusting the tension of the metal wire cores. Through the above structure, medical guide wires can be quickly produced, and the production efficiency is improved.

Description

[0001] This application is a divisional application of Chinese patent application filed on October 27, 2020, with application number “202011166732.X” and invention title “A fully automatic winding device for medical springs”. Technical Field

[0002] This invention relates to the field of medical equipment technology, and in particular to a fully automatic winding device for medical springs. Background Technology

[0003] Medical springs refer to various medical compression springs, medical tension springs, and medical torsion springs used in medical devices. They are used in some instruments that require elasticity, and because the environment in which they are used is medical, the requirements for materials are high. Medical springs also include those used directly inside the human body, such as guidewires. Guidewires are one of the main tools for percutaneous catheterization. Guidewires play a guiding and assisting role in the catheter, helping the catheter enter blood vessels and other cavities, and guiding the catheter smoothly to the lesion.

[0004] However, existing guide wire manufacturing equipment has complex processes and low production efficiency, making it difficult to meet the growing market demand. Summary of the Invention

[0005] The main objective of this invention is to provide a fully automated winding device for medical springs, which aims to solve the technical problems of existing guide wire manufacturing equipment having complex processes, low production efficiency, and difficulty in meeting the growing market demand.

[0006] To achieve the above objectives, the present invention proposes a fully automatic winding device for medical springs, the fully automatic winding device for medical springs comprising:

[0007] Base;

[0008] Two fixing members are provided, spaced apart on the machine base, and the two fixing members are used to fix the reference steel wire;

[0009] A sliding seat, which is slidably disposed on the machine base, wherein the sliding direction of the sliding seat is parallel to the length direction of the machine base;

[0010] A wire winding assembly is disposed on the sliding seat. The wire winding assembly is used to install a multi-strand metal wire core and to wind the multi-strand metal wire core sequentially onto a reference steel wire.

[0011] The winding assembly includes multiple winding rollers, and the winding assembly has through holes through which a reference steel wire passes. The multiple winding rollers are distributed circumferentially around the axis of the through holes, and the winding rollers are used to install metal wire cores. Multiple torque adjustment mechanisms are provided between the through holes and the winding rollers, and the multiple torque adjustment mechanisms correspond one-to-one with the multiple winding rollers. The torque adjustment mechanisms are used to adjust the tension of the metal wire cores.

[0012] Preferably, the wire winding assembly includes:

[0013] A rotating component is disposed on the sliding seat, and the through hole is formed on the rotating component.

[0014] Preferably, the axis of the through hole coincides with the axis of the rotating component located in the horizontal plane, and the plurality of winding rollers are all disposed on the rotating component.

[0015] Preferably, a baffle is provided at the end of the winding roller away from the rotating member.

[0016] Preferably, the winding assembly further includes multiple motors, which are disposed on the surface of the rotating member away from the winding roller. The multiple motors are arranged in a one-to-one correspondence with the multiple winding rollers. The output shaft of the motor passes through the rotating member and is connected to the winding roller. The motor drives the winding roller to rotate.

[0017] Preferably, the winding assembly further includes a plurality of guide rollers, each of which is disposed on the rotating member. The plurality of guide rollers are disposed in one-to-one correspondence with the plurality of winding rollers, and the guide rollers are located between the through hole and the winding rollers.

[0018] Preferably, the peripheral wall of the through hole is provided with a plurality of threading holes, and the plurality of threading holes are arranged one-to-one with the plurality of winding rollers. The winding assembly also includes a plurality of positioning members, and the plurality of positioning members are arranged one-to-one with the plurality of threading holes. The plurality of positioning members are circumferentially distributed on the rotating member with respect to the axis of the through hole. The positioning members are located between the through hole and the winding rollers. The positioning members are provided with positioning holes, and one end of the metal wire core passes through the positioning hole and the threading hole in sequence.

[0019] Preferably, the torque adjustment mechanism includes:

[0020] An adjusting disc, which is rotatably mounted on the rotating component;

[0021] Two bearings are spaced apart on the adjusting disc, and a metal wire core is located between the two bearings and abuts against the two bearings.

[0022] Preferably, the fully automatic medical spring winding device further includes:

[0023] A retaining ring is disposed on the sliding seat;

[0024] A plurality of rollers are arranged circumferentially on the inner peripheral wall of the fixed ring, and the rollers can roll relative to the fixed ring. A rotating member is disposed within the inner ring of the fixed ring, and the outer peripheral wall of the rotating member abuts against the outer peripheral wall of the rollers. The rotating member is connected to an external power source, and the power source is used to drive the rotating member to rotate around the axis of the through hole.

[0025] Preferably, the base is provided with a slide rail, and the bottom of the slide seat is provided with a slider that slides in cooperation with the slide rail.

[0026] This invention relates to a method for producing medical guidewires by using two fixed members spaced apart on a base, with a reference steel wire fixed between them. A sliding seat is slidably mounted on the base, with its sliding direction aligned with the length direction of the reference steel wire. A winding assembly is rotatably mounted on the sliding seat, and the reference steel wire passes through the winding assembly to allow it to rotate around the wire. The winding assembly has multiple metal wire cores that are sequentially wound around the reference steel wire. This structure allows for the rapid production of medical guidewires, improving production efficiency. Furthermore, a torque adjustment mechanism can tighten the metal wire cores to increase their torque. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of an embodiment of the fully automatic medical spring winding device of the present invention;

[0029] Figure 2 This is a schematic diagram of another embodiment of the fully automatic medical spring winding device of the present invention;

[0030] Figure 3 This is a schematic diagram of another embodiment of the fully automatic medical spring winding device of the present invention;

[0031] Figure 4 for Figure 3 A magnified view of a portion of N1;

[0032] Figure 5 for Figure 3 A magnified view of a portion of N2;

[0033] Figure 6 for Figure 3 A magnified view of a portion of N3.

[0034] Explanation of icon numbers:

[0035]

[0036] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0039] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0040] like Figures 1 to 6As shown, the present invention proposes a fully automatic medical spring winding device 100, which includes: a base 10; two fixing members 20, which are spaced apart on the base 10 and a reference steel wire 200 is disposed between the two fixing members 20; a sliding seat 30, which is slidably disposed on the base 10 and the sliding direction of the sliding seat 30 is consistent with the length direction of the reference steel wire 200; and a winding assembly 40, which is rotatably disposed on the sliding seat 30, through which the reference steel wire 200 passes, and the winding assembly 40 is provided with multiple metal wire cores, which are sequentially wound around the peripheral wall of the reference steel wire 200.

[0041] In this process, the sliding seat 30 moves from one end of the reference steel wire 200 to the other end, and the winding assembly 40 rotates around the axis of the reference steel wire 200, so that the peripheral wall of the reference steel wire 200 is completely wrapped with multiple strands of the metal wire core, so that the intertwined multiple strands of the metal wire core form a guide wire.

[0042] In this embodiment, a medical spring, taking a guidewire as an example, is produced using the fully automatic medical spring winding device 100 of this invention. The guidewire is one of the main tools for percutaneous catheterization. It plays a guiding and assisting role in the catheter, helping it enter blood vessels and other cavities, and guiding it smoothly to the lesion. The guidewire consists of inner and outer parts. The outer layer is wound with high-quality stainless steel wire on a spring rotating bed. The wire needs to be smooth, tough, and elastic; the winding must be uniform, tight, neat, and consistent in looseness. This spring should be able to withstand repeated bending and should not break under a certain force. The cavity at the center of the spring, i.e., the interior of the guidewire, contains a rigid steel wire core, which gradually thins at its tip. The very thin tip of the steel core is welded to the end of the spring, and then the tail of the core is welded to the end of the spring, polishing it smooth to create the simplest guidewire. Therefore, the fully automatic medical spring winding device 100 of the present invention has two fixing members 20 spaced apart on the base 10, and a reference steel wire 200 fixed between the two fixing members 20. A sliding seat 30 is slidably arranged on the base 10, and the sliding direction of the sliding seat 30 is consistent with the length direction of the reference steel wire 200. The winding assembly 40 is rotatably arranged on the sliding seat 30. The reference steel wire 200 passes through the winding assembly 40 so that the winding assembly 40 can rotate around the reference steel wire 200. Since the winding assembly is provided with multiple metal wire cores, the metal wire cores are medical steel wires. The diameter of the multiple metal wire cores can be different, and / or the material of the multiple metal wire cores can be different. The multiple metal wire cores are wound sequentially on the reference steel wire 200. During guidewire production, the sliding seat 30 is located at one end of the reference steel wire 200. At this time, the multiple metal wire cores on the winding assembly 40 are respectively fixed to one end of the reference steel wire 200. The sliding seat 30 slowly moves towards the other end, and the winding assembly 40 rotates around the reference steel wire 200. The peripheral wall of the reference steel wire 200 is completely wrapped by the multiple metal wire cores, so that the intertwined multiple metal wire cores form a guidewire. The inner diameter of the guidewire is the same as the diameter of the reference steel wire 200. With the above structure, medical guidewires can be produced quickly, improving production efficiency.

[0043] Understandably, the diameter of the base wire 200 can be changed to produce guidewires with even smaller diameters. Secondly, a very thin layer of polytetrafluoroethylene (PTFE) film can be coated onto the guidewire to make it smoother and reduce the friction coefficient of the catheter. The Teflon sheath of the high-quality guidewire treated with heparin possesses both hemostatic and anticoagulant properties.

[0044] Understandably, for guidewires used in blood vessels, the diameter of the metal wire core can be less than 1 mm.

[0045] Specifically, the winding assembly 40 includes: a rotating member 41, which is rotatably mounted on the sliding seat 30. The rotating member 41 has a through hole A, in which a reference steel wire 200 is located, and the axis of the through hole A coincides with the axis of the reference steel wire 200; and multiple winding rollers 42, which are mounted on the rotating member 41 and each winding roller 42 has a metal wire core. In this embodiment, the rotating member 41 of the winding assembly 40 is rotatably connected to the sliding seat 30, while the sliding seat 30 is slidably connected to the machine base 10. Multiple winding rollers are arranged on the side of the rotating member 41 away from the machine base 10, and each winding roller has a metal wire core. This structure facilitates the individual installation of multiple metal wire cores on the rotating member 41. To facilitate winding multiple strands of metal wire cores around the peripheral wall of the reference steel wire 200, a through hole A can be opened on the rotating part 41, with the reference steel wire 200 located inside the through hole A. This prevents motion interference between the rotating part 41 and the reference steel wire 200, and also facilitates winding multiple strands of metal wire cores sequentially around the peripheral wall of the reference steel wire 200.

[0046] Specifically, the fully automatic medical spring winding device 100 further includes: a fixed ring 50, which is disposed on the sliding seat 30; a plurality of rollers 60, which are circumferentially disposed on the inner peripheral wall of the fixed ring 50 and can roll relative to the fixed ring 50; a rotating member 41 is disposed within the inner ring of the fixed ring 50, and the outer peripheral wall of the rotating member 41 abuts against the outer peripheral wall of the rollers 60; the rotating member 41 is externally connected to a power source, which drives the rotating member 41 to rotate around the axis of the through hole A. In this embodiment, in order to improve the stability of the rotating member 41 rotating relative to the sliding seat 30, a fixed ring 50 can be fixedly disposed on the sliding seat 30, and a plurality of rollers 60 are disposed on the inner peripheral wall of the fixed ring 50. The rotating member 41 is rotatably disposed within the inner ring of the fixed ring 50 through the rollers 60. When the external power source drives the rotating member 41 to rotate, the plurality of rollers 60 play a role in assisting the rolling.

[0047] Specifically, the plurality of winding rollers 42 are circumferentially distributed around the axis of the through hole A. As an optional embodiment, the plurality of winding rollers 42 are circumferentially distributed around the axis of the through hole A, and the axis of the through hole A coincides with the axis of the reference steel wire 200, so that the multiple strands of metal wire core are evenly wound on the peripheral wall of the reference steel wire 200, thereby improving the yield rate of the guide wire.

[0048] Specifically, a baffle 43 is provided at the end of the winding roller 42 away from the fixed base. In this embodiment, in order to prevent the metal wire core from detaching from the winding roller during the conveying process, baffles 43 can be provided at both ends of the winding roller in the length direction.

[0049] Specifically, the winding assembly 40 further includes: a plurality of motors 44, which are disposed on the surface of the rotating member 41 away from the winding roller 42. The number of motors 44 corresponds one-to-one with the number of winding rollers 42. The output shaft of each motor 44 passes through the rotating member 41 and is connected to the winding roller 42, driving the winding roller 42 to rotate. In this embodiment, to facilitate the uniform winding of multiple strands of metal wire core onto the peripheral wall of the reference steel wire 200, a plurality of motors 44 are provided. The plurality of motors 44 are all fixedly disposed on the rotating member 41, and the output shafts of the plurality of motors 44 are respectively connected to the plurality of winding rollers to drive the winding rollers to rotate, thereby conveying the metal wire core to the peripheral wall of the reference steel wire 200. The amount of metal wire core conveyed can also be controlled by controlling the rotational speed of the motors 44.

[0050] Specifically, the winding assembly 40 further includes a plurality of torque adjustment mechanisms 45, the number of which corresponds one-to-one with the number of winding rollers 42. The torque adjustment mechanisms 45 are mounted on the rotating member 41 and located between the through hole A and the winding rollers. Each torque adjustment mechanism 45 is used to adjust the tension of the metal wire core. In this embodiment, to facilitate adjustment of the tension of each metal wire core, a plurality of torque adjustment mechanisms 45 can be added to the rotating member 41 for tightening the metal wire core.

[0051] Specifically, the adjustment mechanism includes: an adjustment disk 451, which is rotatably mounted on the rotating member 41; and two bearings 452, which are spaced apart on the adjustment disk 451, with the metal wire core located between the two bearings 452. In this embodiment, the torque adjustment mechanism 45 may include bearings 452 and an adjustment disk 451. The adjustment disk 451 has a circular structure, and the two bearings 452 are rotatably mounted on the adjustment disk 451, allowing the metal wire core to pass through the two bearings 452. When it is necessary to adjust the torque of the metal wire core, the adjustment disk 451 is rotated so that both bearings 452 abut against the metal wire core and are staggered to tighten the metal wire core, causing the metal wire core to have an S-shaped path, thereby increasing the torque of the metal wire core.

[0052] Specifically, the winding assembly 40 further includes a plurality of guide rollers 46, all rotatably mounted on the rotating member 41. The number of guide rollers 46 corresponds one-to-one with the number of winding rollers, and the guide rollers 46 are located between the through hole A and the winding rollers. In this embodiment, to facilitate stable transmission of multiple strands of metal wire core, guide rollers 46 are provided. The metal wire core is distributed on the rotating member 41 via the guide roller, so that the multiple strands of metal wire core are evenly distributed on the rotating member 41.

[0053] Specifically, the peripheral wall of the through hole A has multiple threading holes C, the number of threading holes C corresponding one-to-one with the number of winding rollers. The winding assembly 40 also includes multiple positioning elements 47, the number of positioning elements 47 corresponding one-to-one with the number of threading holes C. The multiple positioning elements 47 are circumferentially distributed on the rotating element 41 around the axis of the through hole A. The positioning elements 47 are located between the through hole A and the winding rollers. Each positioning element 47 has a positioning hole B, and one end of the metal wire core passes through the positioning hole B and the threading hole C in sequence. In this embodiment, in order to ensure that each metal wire core can be accurately wound on the peripheral wall of the reference steel wire 200, a positioning element 47 can be provided. Each metal wire core passes through the positioning hole B of the positioning element 47 into the threading hole C and is wound on the peripheral wall of the reference steel wire 200, so that each metal wire core can be accurately transmitted to the peripheral wall of the reference steel wire 200, improving the accuracy and quality of the product.

[0054] It is understandable that two guide rails (not marked in the figure) can be set on the base 10. The two guide rails are spaced apart and parallel, and the length direction of the guide rails is consistent with the length direction of the reference steel wire 200. The sliding component is slidably set on the two guide rails to improve the sliding stability of the sliding seat 30.

[0055] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A fully automatic medical spring coiling apparatus, characterized by, The fully automated medical spring winding device includes: Base; Two fixing members are provided, spaced apart on the machine base, and the two fixing members are used to fix the reference steel wire; A sliding seat, which is slidably disposed on the machine base, wherein the sliding direction of the sliding seat is parallel to the length direction of the machine base; A wire winding assembly is rotatably mounted on the sliding seat. The wire winding assembly is used to install a multi-strand metal wire core and to sequentially wind the multi-strand metal wire core onto a reference steel wire. The winding assembly includes multiple winding rollers, and the winding assembly has through holes through which a reference steel wire passes. The multiple winding rollers are distributed circumferentially around the axis of the through holes, and the winding rollers are used to mount the metal wire core. Multiple torque adjustment mechanisms are provided between the through holes and the winding rollers, and the multiple torque adjustment mechanisms correspond one-to-one with the multiple winding rollers. The torque adjustment mechanisms are used to adjust the tension of the metal wire core. The wire winding assembly includes: A rotating component is disposed on the sliding seat, and a through hole is formed on the rotating component; the axis of the through hole coincides with the axis of the rotating component in the horizontal plane, and multiple winding rollers are disposed on the rotating component, so that the winding assembly rotates around the reference steel wire.

2. The fully automatic medical spring coiling apparatus according to claim 1, wherein A baffle is provided at the end of the winding roller away from the rotating component.

3. The fully automatic medical spring coiling apparatus according to claim 2, wherein The winding assembly also includes multiple motors, which are disposed on the surface of the rotating member away from the winding roller. Each motor corresponds to one of the winding rollers. The output shaft of the motor passes through the rotating member and is connected to the winding roller. The motor drives the winding roller to rotate.

4. The fully automatic medical spring coiling apparatus as claimed in claim 3, wherein The winding assembly also includes a plurality of guide rollers, all of which are disposed on the rotating member. The plurality of guide rollers are disposed in a one-to-one correspondence with the plurality of winding rollers, and the guide rollers are located between the through hole and the winding rollers.

5. The fully automatic medical spring coiling apparatus as claimed in claim 3, wherein The peripheral wall of the through hole is provided with a plurality of threading holes, and the plurality of threading holes are respectively arranged in a corresponding manner with the plurality of winding rollers. The winding assembly also includes a plurality of positioning members, and the plurality of positioning members are respectively arranged in a corresponding manner with the plurality of threading holes. The plurality of positioning members are circumferentially distributed on the rotating member with respect to the axis of the through hole. The positioning members are located between the through hole and the winding rollers. The positioning members are provided with positioning holes, and one end of the metal wire core passes through the positioning hole and the threading hole in sequence.

6. The fully automatic medical spring coiling apparatus as claimed in claim 3, wherein The torque adjustment mechanism includes: An adjusting disc, which is rotatably mounted on the rotating component; Two bearings are spaced apart on the adjusting disc, and a metal wire core is located between the two bearings and abuts against the two bearings.

7. The fully automatic medical spring coiling apparatus according to claim 3, wherein The fully automated medical spring winding device also includes: A retaining ring is disposed on the sliding seat; A plurality of rollers are arranged on the inner circumferential wall of the fixed ring, the rollers can roll relative to the fixed ring, the rotating member is arranged in the inner ring of the fixed ring, the outer circumferential wall of the rotating member abuts against the outer circumferential wall of the rollers, the rotating member is connected with a power source, and the power source is used for driving the rotating member to rotate around the axis of the through hole.

8. The fully automatic medical spring coiling apparatus as claimed in claim 2, wherein The machine base is provided with a sliding rail, and the bottom of the sliding seat is provided with a sliding block in sliding fit with the sliding rail.

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