A novel controllable bending guide wire and preparation method thereof

Abstract

The present invention relates to the field of guidewire technology, and in particular to a novel controllable bending guidewire and a preparation method thereof. The technical scheme thereof comprises: a spring; a bending control handle body, arranged at the head end of the spring; an insertion assembly, arranged at the tail end of the spring; wherein the insertion assembly is composed of a hollow tube and a TPU tube, and the TPU tube is sleeved on the hollow tube; wherein a plurality of square holes are provided on one side wall of the hollow tube; a core wire and a steel wire, which are inserted into the spring; wherein the core wire is arranged on the steel wire; the tail end of the core wire and the steel wire are fixed in the square hole at the far end of the hollow tube by a clamping ring. The present invention has the advantage that the square hole arrangement makes the bending part of the wall of the bent hollow tube empty, the folded tube wall will not thicken after bending, and will not affect the bending, thereby preventing the bending degree of the guidewire insertion end from being difficult to adjust.

Description

Technical Field

[0001] The present invention relates to the technical field of guidewires, and in particular to a novel controllable bending guidewire and a preparation method thereof. Background Art

[0002] The main function of the guide wire is to guide the catheter, help the catheter enter the human blood vessels, and guide the catheter to reach the vascular lesion smoothly.

[0003] “https: / / www.douyin.com / search / %E5%AF%BC%E4%B8%9D?modal_id=7151679065655758087&publish_time=0&sort_type=0&source=switch_tab&type=video” The above website discloses a guidewire, including a catheter and a bending control handle. The above guidewire has the following shortcomings in actual use:

[0004] When the guidewire is placed in a blood vessel, the bending degree of the guidewire insertion end is difficult to adjust because the catheter wall contacts the catheter wall when the catheter at the guidewire insertion end is bent and the thickness increases. In view of this, we propose a novel controllable bending guidewire and a preparation method thereof. Summary of the invention

[0005] The purpose of the present invention is to provide a novel controllable bending guide wire and a preparation method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a new type of controllable bending guide wire, comprising: a spring; a bending control handle body, arranged at the head end of the spring; an insertion component, arranged at the tail end of the spring; wherein the insertion component is composed of a hollow tube and a TPU tube, and the TPU tube sleeve is arranged on the hollow tube; wherein a plurality of square holes are opened on the tube wall on one side of the hollow tube; a core wire and a steel wire, which are passed through the spring; wherein the core wire is arranged on the steel wire; wherein the steel wire is flat and has a square cross-section; wherein the core wire and the steel wire are fixed to the head end of the spring by a guide wire clamp, the core wire and the steel wire head end are arranged in the bending control handle body, and the core wire and the steel wire tail end are fixed in the square hole at the far end of the hollow tube by a clamping ring.

[0007] Preferably, the hollow tube includes: a spiral groove, which is opened on the inner wall of the hollow tube; wherein the spiral groove is snap-fitted with the tail end of the spring; and a plurality of glue injection ports, which are opened on the wall of the hollow tube; wherein the plurality of glue injection ports are distributed along the spiral direction of the spiral groove, and the glue injection ports are connected to the spiral groove.

[0008] Preferably, the glue injection port includes: an opening A, which is opened in the spiral groove on the inner wall of the hollow tube; and an opening B, which is opened on the outer wall of the hollow tube; wherein the opening A is connected to the opening B; wherein the volume of the opening A is smaller than the volume of the opening B.

[0009] Preferably, the opening A is designed in a truncated cone structure, the outer port of the opening A is smaller than the inner port, and the opening B is designed in a spherical structure.

[0010] Preferably, the hollow tube is made of nickel-titanium memory alloy, and the TPU tube contains a 50 μm tungsten powder coating.

[0011] A novel method for preparing a controllable curved guide wire, the preparation process is as follows:

[0012] S1. Select the hollow tube, TPU tube, spring, core wire, flat steel wire, bending handle body and clamping ring for use;

[0013] S2. Insert the tail end of the spring into the hollow tube, fit the tail end of the spring into the spiral groove, inject glue into the spiral groove from the glue injection port, and fix the tail end of the spring in the spiral groove by bonding;

[0014] S3, fix the core wire on the steel wire;

[0015] S4, the core wire and the steel wire are inserted from the head end of the spring, the steel wire and the core wire are fixed to the head end of the spring using a wire guide clamp, the tail ends of the steel wire and the core wire are fastened using a clamping ring and then inserted into the square hole at the far end of the hollow tube, and the clamping ring is fixed to the hollow tube by welding;

[0016] S5. The TPU tube is sleeved on the hollow tube, and the TPU tube is fixed to the outer wall of the hollow tube by a heat shrink process;

[0017] S6. The head end of the spring fixes the bending control handle body. A slider and a slide groove are provided on the bending control handle body. The steel wire is connected to the slider. The steel wire is moved by pushing and pulling the slider to perform wire bending control.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention provides a square hole, and the hollow tube and TPU tube are inserted into the blood vessel. The core wire and the steel wire are used to control the bending of the hollow tube and TPU tube by using the bending control handle body. When the hollow tube and TPU tube are bent, the setting of the square hole makes the bending part of the tube wall of the bent hollow tube empty. After bending, the folded tube wall will not thicken, and will not affect the bending, preventing the bending degree of the guide wire insertion end from being difficult to adjust. It solves the problem that when the catheter at the guide wire insertion end is bent, the catheter wall and the catheter wall are bent and contacted to increase the thickness, and the bending degree of the guide wire insertion end is difficult to adjust.

[0020] 2. The present invention provides a spiral groove and a glue injection port. The setting of the spiral groove makes the spring tail end more stably connected in the hollow tube; the setting of the glue injection port makes it more convenient to inject glue and fix the spring tail end connected in the hollow tube, which is beneficial to the installation operation and prevents the spring tail end from being inconveniently bonded in the hollow tube due to limited space in the hollow tube.

[0021] 3. The present invention sets opening A and opening B, and the glue injection needle is inserted from opening A into opening B. The large volume setting of opening B allows more accommodation space for the injected glue, and prevents the glue from overflowing from opening A during the process of the glue entering the spiral groove to bond the spring; the truncated cone-shaped opening A tightens the glue injection needle, and the spherical structure of opening B accommodates more glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the explosion structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the hollow tube of the present invention;

[0025] Figure 4 For the present invention Figure 3 An enlarged schematic diagram of point B;

[0026] In the figure:

[0027] 1. Insertion assembly; 2. Spring; 3. Core wire; 4. Steel wire; 5. Bending handle body; 6. Clamping ring;

[0028] 101. Hollow tube; 102. TPU tube;

[0029] 1011, square hole; 1012, spiral groove; 1013, glue injection port;

[0030] 1031a, opening A; 1031b, opening B. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Embodiment 1

[0035] See also Figure 1-Figure 4 , the present invention provides a technical solution:

[0036] A novel controllable bending guide wire comprises: a spring 2, the elastic coefficient of the spring 2 is selected by the technicians in the field according to the actual situation; a bending control handle body 5, arranged at the head end of the spring 2; the patent with the publication number CN215690861U discloses a control handle and a bending adjustment catheter, including a control handle and a bending adjustment catheter, the control handle belongs to the disclosed prior art and is directly selected for use in this application; an insertion component 1, arranged at the tail end of the spring 2; wherein the insertion component 1 is composed of a hollow tube 101 and a TPU tube 102, the TPU tube 10 2 sets are arranged on the hollow tube 101; wherein, a plurality of square holes 1011 are opened on one side wall of the hollow tube 101; the core wire 3 and the steel wire 4 are inserted into the spring 2; wherein, the core wire 3 is arranged on the steel wire 4; wherein, the steel wire 4 is flat, and its cross section is square, and the flat steel wire 4 is convenient for fixing the core wire 3; wherein, the core wire 3 and the steel wire 4 are fixed to the head end of the spring 2 through a guide wire clamp, the head ends of the core wire 3 and the steel wire 4 are arranged in the bending control handle body 5, and the tail ends of the core wire 3 and the steel wire 4 are fixed in the square hole 1011 at the far end of the hollow tube 101 through a clamping ring 6. The present invention provides a square hole 1011, and the hollow tube 101 and the TPU tube 102 are inserted into the blood vessel. The core wire 3 and the steel wire 4 are used to control the bending of the hollow tube 101 and the TPU tube 102 by using the bending control handle body 5. When the hollow tube 101 and the TPU tube 102 are bent, the setting of the square hole 1011 makes the bending part of the tube wall of the bent hollow tube 101 empty, and the folded tube wall will not be thickened after bending, and will not affect the bending, so as to prevent the bending degree of the guide wire insertion end from being difficult to adjust. The problem that the thickness of the catheter wall increases when the catheter at the guide wire insertion end is bent and the bending degree of the guide wire insertion end is difficult to adjust is solved.

[0037] Specifically, the hollow tube 101 includes: a spiral groove 1012, which is provided on the inner wall of the hollow tube 101; wherein the spiral groove 1012 is engaged with the tail end of the spring 2; and a plurality of glue injection ports 1013, which are provided on the tube wall of the hollow tube 101; wherein the plurality of glue injection ports 1013 are distributed along the spiral direction of the spiral groove 1012, and the glue injection ports 1013 are connected with the spiral groove 1012. The present invention provides the spiral groove 1012 and the glue injection ports 1013, and the provision of the spiral groove 1012 makes the tail end of the spring 2 more stably engaged in the hollow tube 101; the provision of the glue injection ports 1013 makes it more convenient to inject glue and fix the tail end of the spring 2 engaged in the hollow tube 101, which is beneficial to the installation operation, and prevents the limited space in the hollow tube 101 from making it inconvenient to bond the tail end of the spring 2 in the hollow tube 101.

[0038] Further, the glue injection port 1013 includes: an opening A1031a, which is opened in the spiral groove 1012 on the inner wall of the hollow tube 101; an opening B1031b, which is opened in the outer wall of the hollow tube 101; wherein the opening A1031a is connected to the opening B1031b; wherein the volume of the opening A1031a is smaller than the volume of the opening B1031b. The present invention provides the opening A1031a and the opening B1031b, and the glue injection needle is inserted from the opening A1031a into the opening B1031b. The large volume setting of the opening B1031b allows more accommodation space for the injected glue, and prevents the glue from overflowing from the opening A1031a during the process of the glue entering the spiral groove 1012 to bond the spring 2.

[0039] Furthermore, the opening A1031a adopts a truncated cone structure design, the outer port of the opening A1031a is smaller than the inner port, and the opening B1031b adopts a spherical structure design; the truncated cone structure of the opening A1031a tightens the glue injection needle, and the spherical structure of the opening B1031b accommodates more glue.

[0040] Furthermore, the hollow tube 101 is made of nickel-titanium memory alloy, which facilitates the recovery of the hollow tube 101 after bending; the TPU tube 102 contains a 50μm tungsten powder coating to improve the imaging effect of the TPU tube 102.

[0041] Embodiment 2

[0042] See also Figure 1-Figure 4 , the present invention provides a technical solution:

[0043] A novel method for preparing a controllable curved guide wire, the preparation process is as follows:

[0044] S1. Select the hollow tube 101, the TPU tube 102, the spring 2, the core wire 3, the flat steel wire 4, the bending control handle body 5 and the clamping ring 6 for use;

[0045] S2, the tail end of the spring 2 is inserted into the hollow tube 101, the tail end of the spring 2 is embedded in the spiral groove 1012, and glue is injected into the spiral groove 1012 from the glue injection port 1013, and the tail end of the spring 2 is fixed in the spiral groove 1012 by bonding;

[0046] S3, fixing the core wire 3 on the steel wire 4;

[0047] S4, core wire 3 and steel wire 4 are inserted from the head end of spring 2, steel wire 4 and core wire 3 are fixed to the head end of spring 2 using a wire guide clamp, and the tail ends of steel wire 4 and core wire 3 are fastened using a clamping ring 6 and then inserted into the square hole 1011 at the far end of hollow tube 101, and the clamping ring 6 is fixed to the hollow tube 101 by welding;

[0048] S5, the TPU tube 102 is sleeved on the hollow tube 101, and the TPU tube 102 is fixed to the outer wall of the hollow tube 101 by using a heat shrink process;

[0049] S6, the head end of the spring 2 fixes the bending control handle body 5, and a slider and a slide groove are provided on the bending control handle body 5. The steel wire 4 is connected to the slider, and the steel wire 4 is moved by pushing and pulling the slider to perform wire bending control.

[0050] Working principle: the hollow tube 101, the TPU tube 102, the spring 2, the core wire 3, the flat steel wire 4, the bending control handle body 5 and the clamping ring 6 are assembled to form a controllable bending guide wire. The hollow tube 101 and the TPU tube 102 are inserted into the blood vessel. The slider on the bending control handle body 5 is used to move the core wire 3 and the steel wire 4 to control the bending of the hollow tube 101 and the TPU tube 102. The hollow tube 101 and the TPU tube 102 are bent. The setting of the square hole 1011 makes the bending part of the wall of the bent hollow tube 101 empty. After bending, the folded tube wall will not thicken and will not affect the bending.

[0051] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A novel controllable bending guide wire, characterized in that: include: Spring (2); A bending control handle body (5) is arranged at the head end of the spring (2); An insertion component (1) is arranged at the rear end of the spring (2); The insertion component (1) is composed of a hollow tube (101) and a TPU tube (102), and the TPU tube (102) is sleeved on the hollow tube (101); Wherein, a plurality of square holes (1011) are provided on a tube wall of one side of the hollow tube (101); A core wire (3) and a steel wire (4) are inserted into the spring (2); Wherein, the core wire (3) is arranged on the steel wire (4); Wherein, the steel wire (4) is flat and has a square cross section; The core wire (3) and the steel wire (4) are fixed to the head end of the spring (2) through a wire guide clamp, the head ends of the core wire (3) and the steel wire (4) are arranged in the bending control handle body (5), and the tail ends of the core wire (3) and the steel wire (4) are fixed in the square hole (1011) at the far end of the hollow tube (101) through a clamping ring (6); The hollow tube (101) comprises: A spiral groove (1012) is formed on the inner wall of the hollow tube (101); Wherein, the spiral groove (1012) is snap-fitted with the tail end of the spring (2); A plurality of glue injection ports (1013) are provided on the wall of the hollow tube (101); Wherein, a plurality of the glue injection ports (1013) are distributed along the spiral direction of the spiral groove (1012), and the glue injection ports (1013) are connected to the spiral groove (1012); The glue injection port (1013) comprises: An opening A (1031a) is provided in the spiral groove (1012) on the inner wall of the hollow tube (101); An opening B (1031b) is provided on the outer wall of the hollow tube (101); Wherein, the opening A (1031a) is connected to the opening B (1031b); Wherein, the volume of the opening A (1031a) is smaller than the volume of the opening B (1031b); The hollow tube (101) is made of nickel-titanium memory alloy, and the TPU tube (102) contains a 50 μm tungsten powder coating.

2. A novel controllable bending guide wire according to claim 1, characterized in that: The opening A (1031a) is designed in a truncated cone structure, the outer port of the opening A (1031a) is smaller than the inner port, and the opening B (1031b) is designed in a spherical structure.

3. A method for preparing a novel controllable bending guide wire, which is applied to manufacture the novel controllable bending guide wire as claimed in claim 2, characterized in that: The preparation process is as follows: S1. Select a hollow tube (101), a TPU tube (102), a spring (2), a core wire (3), a flat steel wire (4), a bending control handle body (5) and a clamping ring (6) for use; S2, the tail end of the spring (2) is inserted into the hollow tube (101), the tail end of the spring (2) is embedded in the spiral groove (1012), and glue is injected into the spiral groove (1012) from the glue injection port (1013), and the tail end of the spring (2) is fixed in the spiral groove (1012) by bonding; S3, fixing the core wire (3) on the steel wire (4); S4, the core wire (3) and the steel wire (4) are inserted from the head end of the spring (2), the steel wire (4) and the core wire (3) are fixed to the head end of the spring (2) using a wire guide clamp, the tail ends of the steel wire (4) and the core wire (3) are fastened using a clamping ring (6), and then inserted into the square hole (1011) at the far end of the hollow tube (101), and the clamping ring (6) is fixed to the hollow tube (101) by welding; S5, the TPU tube (102) is sleeved on the hollow tube (101), and the TPU tube (102) is fixed to the outer wall of the hollow tube (101) by using a heat shrink process; S6, the head end of the spring (2) fixes the bending control handle body (5), the bending control handle body (5) is provided with a slider and a slide groove, the steel wire (4) is connected to the slider, and the steel wire (4) is moved by pushing and pulling the slider to perform wire bending control.

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