Guidewire insertion assist device for neurointerventional surgery

Abstract

The present invention provides a guide wire insertion auxiliary device for neurointerventional surgery, which relates to the field of medical device technology, including: a gun body; the interior of the gun body is hollow, and a clamping part is installed inside the gun body; an arc-shaped manual plate is installed on the top of the gun body, and the arc-shaped manual plate is fixedly connected to the front clamping assembly, and a manual nut is connected to the rear end of the arc-shaped manual plate; a spring B is connected to the rear end of the top of the gun body, and one end of the spring B is in contact with the arc-shaped manual plate; a guide wire, the guide wire runs through the gun body, and the guide wire runs through the two clamping assemblies in sequence. The present invention can drive the guide wire to move intermittently in one direction through the front clamping assembly and the rear clamping assembly in the clamping part to better meet the needs of neurointerventional surgery and ensure the guide wire delivery force. It solves the problem that the delivery force applied during the traditional guide wire insertion and delivery process is small, and the guide wire insertion is not ideal and the insertion is difficult due to the combined effect of insufficient delivery force and the softness of the front end of the guide wire.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a guidewire insertion auxiliary device for neurointervention surgery. Background Art

[0002] Neurointerventional surgery has become an important means of preventing and treating cerebrovascular diseases due to its minimally invasive, safe, and low complication rates. However, in neurointerventional surgery, it is often necessary to insert a catheter and a guidewire into the artery through a sheath needle. For example, Mi Shijun et al. introduced in the article "Interventional-assisted Treatment of Arterial Crisis in Closed Finger Injury" in the 12th issue of Chinese Comprehensive Clinical Medicine in 2013.

[0003] However, in the current traditional guidewire insertion and delivery process, force is often applied at a distance from the tail end of the guidewire for insertion, and the delivery force applied is relatively small. Since the front end of the guidewire is designed to be soft to avoid damage to the arterial tube or other tissue mucosal walls, the combined effect of insufficient force and the softness of the front end of the guidewire makes the guidewire insertion unsatisfactory and more difficult. Summary of the invention

[0004] In view of this, the present invention provides a guidewire insertion auxiliary device for neurointerventional surgery, which can drive the guidewire to move intermittently in one direction through the cooperation of two clamping components. When the front clamping component moves backward, the rear clamping component clamps and fixes the guidewire, so that the guidewire cannot move backward, thereby better meeting the requirements of neurointerventional surgery and ensuring the guidewire delivery force.

[0005] The present invention provides a guidewire insertion auxiliary device for neurointerventional surgery, which specifically includes: a gun body; the interior of the gun body is hollow, and a clamping part is installed inside the gun body, the clamping part includes a front end clamping assembly, and the front end clamping assembly is slidably connected to the front end of the gun body; the rear end clamping assembly is fixed to the rear end of the gun body; an arc-shaped manual plate is installed on the top of the gun body, and the arc-shaped manual plate is fixedly connected to the front end clamping assembly, and a manual nut is connected to the rear end of the arc-shaped manual plate; a spring B is connected to the rear end of the top of the gun body, and one end of the spring B is in contact with the arc-shaped manual plate; a guide wire, the guide wire passes through the gun body, and the guide wire passes through the interior of the clamping part in turn.

[0006] Optionally, the front end clamping assembly includes a first shell, a first fixed cover, a first movable part, a first clamping bead and a first spring A; a first surface is provided on the inner side of the first shell, and the first surface is inclined; the first fixed cover is threadedly connected to the front end of the first shell, the first movable part is slidably connected to the inside of the first shell, and a second surface is provided at the outer rear end of the first movable part, and the second surface is also inclined; the front end of the first movable part slides through the first fixed cover.

[0007] Optionally, the rear end clamping assembly includes a second shell, a second fixed cover, a second movable part, a second clamping bead and a second spring A; a third surface is provided at the rear end of the inner side of the second shell, and the third surface is inclined. The second fixed cover is threadedly connected to the front end of the second shell, and the second movable part is slidably connected to the inside of the second shell. A fourth surface is provided at the rear end of the outer side of the second movable part 223, and the fourth surface is also inclined. The front end of the second movable part 223 slides through the second fixed cover 222.

[0008] Optionally, four first assembly holes are arranged in a circumferential shape on the outer inclined end surface of the first movable part, the first assembly holes are connected with the interior of the first movable part, the guide wire slides through the interior of the first movable part, a first clamping bead is installed in the first assembly hole, the outer end of the first clamping bead contacts with the first surface on the inner side of the first shell, and the inner end of the first clamping bead contacts with the guide wire.

[0009] Optionally, the second assembly hole is connected to the interior of the first movable part, the guide wire slides through the interior of the second movable part, a second clamping bead is installed in the second assembly hole, the outer end of the second clamping bead contacts the third surface on the inner side of the second shell, and the inner end of the second clamping bead contacts the guide wire.

[0010] Optionally, the first spring A is sleeved on the outside of the first movable member, and one end of the first spring A is in contact with the inner side of the first fixed cover.

[0011] Optionally, a guide slide hole is opened at the rear end of the top of the gun body, a guide rod is provided on the rear side of the arc-shaped manual plate, the guide rod is slidably connected in the guide slide hole, a spring B is sleeved on the outside of the guide rod, and the rear end of the spring B contacts the gun body.

[0012] Optionally, an external thread is provided on the outside of the guide rod, the manual nut is threadedly connected to the outside of the guide rod, and the front side of the manual nut is in contact with the gun body.

[0013] Optionally, the gun body is provided with limited sliding holes on the left and right sides respectively, the arc-shaped manual plate is slidably connected to the outer side of the top of the gun body, and sliders are provided at both ends of the bottom of the arc-shaped manual plate respectively, the sliders are slidably connected to the limited sliding holes, and the two sliders are fixedly connected to the left and right sides of the front clamping assembly respectively.

[0014] Optionally, the first surface and the second surface are arranged in parallel or intersecting with each other, and the third surface and the fourth surface are also arranged in parallel or intersecting with each other.

[0015] Beneficial Effects

[0016] Compared with the traditional guidewire insertion assist device, the guidewire insertion assist device for neurointerventional surgery according to each embodiment of the present invention can drive the guidewire to move intermittently in one direction through the cooperation between the front-end clamping component and the rear-end supporting component. When the front-end clamping component moves backward, the rear-end clamping component clamps and fixes the guidewire to prevent the guidewire from moving backward, thereby better meeting the requirements of neurointerventional surgery and ensuring the guidewire delivery force.

[0017] In addition, through the setting of the clamping part, by pulling the arc manual plate backward, the arc manual plate drives the front clamping assembly to move backward, and the second movable member inside the rear clamping assembly moves backward under the influence of the thrust of the second spring A, thereby reducing the distance between the outer third inclined surface of the second movable member and the inner fourth surface of the second shell, and the second clamping bead moves inward under the influence of the thrust of the second shell, so that the second clamping bead is clamped outside the guide wire, thereby ensuring the firmness of the guide wire connection inside the rear clamping assembly;

[0018] The first clamping bead inside the front-end clamping assembly is affected by the resistance of the guide wire and moves outward, so that the first movable part slides forward, ensuring the smooth movement of the guide wire inside the front-end clamping assembly; when the operator stops pulling the arc manual plate backward, the arc manual plate is affected by the thrust of spring B to drive the front-end clamping assembly of the gun body to move forward, and the first movable part inside the front-end clamping assembly is affected by the thrust of the first spring A to move backward, reducing the distance between the first surface of the outer side of the first movable part and the second surface of the inner side of the first shell, and the first clamping bead is affected by the thrust of the first shell to move inward, so that the first clamping bead is clamped on the outside of the guide wire, ensuring the firmness of the guide wire connection inside the front-end clamping assembly, and the second clamping bead inside the rear-end clamping assembly is affected by the tension of the guide wire and moves outward, so that the second movable part slides forward, ensuring the smooth movement of the guide wire inside the rear-end supporting assembly, so that the front-end clamping assembly can drive the guide wire to move intermittently in one direction, and the guide wire cannot be displaced backward, which better meets the needs of neurointerventional surgery and ensures the strength of guide wire delivery;

[0019] According to the different single-time conveying distances of the guide wire required, the manual nut outside the guide rod can be rotated and adjusted to change the moving stroke of the clamping component inside the front end of the gun body to better meet the needs of conveying guide wires at different distances. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0021] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0022] In the attached picture:

[0023] Figure 1A schematic diagram of the axial structure of a guidewire insertion auxiliary device for neurointervention surgery according to an embodiment of the present invention is shown;

[0024] Figure 2 A schematic cross-sectional view of a guidewire insertion assisting device for neurointervention surgery according to an embodiment of the present invention is shown;

[0025] Figure 3 Another cross-sectional structural schematic diagram of the guidewire insertion auxiliary device for neurointervention surgery according to an embodiment of the present invention is shown;

[0026] Figure 4 It shows a schematic diagram of the axial side structure of a gun body according to an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of the split structure of the arc-shaped manual plate and the manual nut according to an embodiment of the present invention is shown;

[0028] Figure 6 A schematic diagram of the axial structure of a clamping assembly according to an embodiment of the present invention is shown;

[0029] Figure 7 A schematic cross-sectional view of a clamping assembly according to an embodiment of the present invention is shown;

[0030] Figure 8 A schematic diagram of the disassembly structure of a clamping assembly according to an embodiment of the present invention is shown;

[0031] Fig. 9 A schematic diagram of the separation structure of the first movable member and the first clamping bead according to an embodiment of the present invention is shown;

[0032] Fig.10 A schematic cross-sectional view of another embodiment of a guidewire insertion assisting device for neurointervention surgery according to an embodiment of the present invention is shown;

[0033] Fig.11 for Fig.10 Schematic diagram of the enlarged structure of the second assembly hole and the fourth assembly hole.

[0034] Reference numerals list

[0035] 1. Gun body; 101. Limiting slide hole; 102. Guide slide hole; 21. Front end clamping assembly; 2101. Slide groove; 211. First shell; 212. First fixed cover; 213. First movable part; 214. First clamping bead; 2141. Third clamping bead; 2142. First assembly hole; 2143. Third assembly hole; 215. First spring A; 22. Rear end clamping assembly; 2211. Boss; 221. Second shell; 222. Second fixed cover; 223. Second movable part; 224. Second clamping bead; 2241. Fourth clamping bead; 2242. Second assembly hole; 2243. Fourth assembly hole; 225. Second spring A; 3. Arc manual plate; 301. Sliding block; 302. Guide rod; 4. Spring B; 5. Manual nut; 6. Guide wire. DETAILED DESCRIPTION

[0036] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference numerals in the drawings represent the same components.

[0037] Embodiment 1:

[0038] Please refer to Figures 1 to 9 :

[0039] The present invention proposes a guidewire insertion auxiliary device for neurointerventional surgery, comprising: a gun body 1 and a guidewire 6, preferably, the guidewire 6 can also be said to be a catheter plus a guidewire in the catheter; the interior of the gun body 1 is hollow, and a clamping part is installed inside the gun body 1, the clamping part includes a front end clamping assembly 21, and the front end clamping assembly is slidably connected to the front end of the gun body 1; the rear end clamping assembly 22 is fixed to the rear end of the gun body 1, preferably, it is clamped to the inside of the gun body 1 through the circumferential boss 2201 of the rear end clamping assembly; the front end clamping assembly 21 includes a first shell 211, a first fixed cover 212, a first movable part 213, a first clamping bead 214 and a first spring A 215, the first shell 211 is provided with a first surface at the rear end of the inner side, and the first surface is inclined, the first fixed cover 212 is threadedly connected to the front end of the first shell, the first movable part 213 is slidably connected to the inside of the first shell, and the first movable part 213 is A second surface is provided at the rear end of the outer side, and the second surface is also inclined. Preferably, the first surface and the second surface are arranged in parallel. If the clamping force of the front-end clamping assembly is adjusted, the intersection of the first surface and the second surface, specifically, the extension of the first surface and the extension of the second surface are arranged to intersect, the front end of the first movable member 213 slides through the first fixed cover 212; four first assembly holes 2142 are provided on the second surface of the outer side of the first movable member 213 in a circumferential shape, the first assembly holes 2142 are connected to the inside of the first movable member 213, the guide wire 6 slides through the inside of the first movable member 213, and the first clamping bead 214 is installed in the first assembly hole 2142. The outer end of the first clamping bead 214 contacts the first surface on the inner side of the first shell, and the inner end of the first clamping bead 214 contacts the guide wire 6; an arc-shaped manual plate 3 is installed on the top of the gun body 1, and the arc-shaped manual plate 3 is fixedly connected to the front-end clamping assembly 21, and the rear end of the arc-shaped manual plate 3 is connected to the manual nut 5; a spring B 4 is connected to the rear end of the top of the gun body 1, and the spring B 4 one end is in contact with the arc-shaped manual plate 3; the guide wire 6 passes through the gun body 1, and the guide wire 6 passes through the inside of the clamping part in turn.

[0040] Further, the rear end clamping assembly 22 includes a second shell 221, a second fixed cover 222, a second movable member 223, a second clamping bead 224 and a second spring A 225. The second shell 221 is provided with a third surface at the inner rear end, and the third surface is inclined. The second fixed cover 222 is threadedly connected to the front end of the second shell, and the second movable member 223 is slidably connected to the inside of the second shell. A fourth surface is provided at the outer rear end of the second movable member 223, and the fourth surface is also inclined. Preferably, the third surface and the fourth surface are arranged in parallel. If the clamping force of the rear end clamping assembly is adjusted, the intersection of the third surface and the fourth surface is specifically an extension of the third surface and an extension of the fourth surface. The front end of the second movable member 223 slides through the second fixed cover 222; four second assembly holes 2242 are provided in a circumferential shape on the fourth surface of the outer side of the second movable member 223, the second assembly holes 2242 are connected to the inside of the second movable member 223, the guide wire 6 slides through the inside of the second movable member 223, and a second clamping bead 224 is installed in the second assembly hole 2242, the outer end of the second clamping bead 224 contacts the third surface of the inner side of the second housing, and the inner end of the second clamping bead 224 contacts the guide wire 6;

[0041] In addition, according to the embodiment of the present invention, the first spring A 215 is sleeved on the outside of the first movable member 213, and one end of the first spring A 215 is in contact with the inner side of the first fixed cover 212;

[0042] With the above technical solution, when the front-end clamping assembly 21 slides backward, the second movable member 223 inside the rear-end clamping assembly 22 is moved backward by the thrust of the second spring A 215, reducing the distance between the third surface outside the second movable member 223 and the fourth surface inside the second housing, and the second clamping bead 224 is moved inward by the thrust of the second housing, so that the second clamping bead 224 is clamped outside the guide wire 6, thereby ensuring the firmness of the connection of the guide wire 6 inside the rear-end clamping assembly 22;

[0043] The first clamping bead 214 inside the front clamping assembly 21 is affected by the resistance of the guide wire 6 and moves outward, so that the first movable member 213 slides forward, ensuring the smooth movement of the guide wire 6 inside the front clamping assembly 2;

[0044] When the front end clamping assembly 21 slides forward, the first movable member 213 inside the front end clamping assembly 21 moves backward under the thrust of the first spring A215, reducing the distance between the first outer surface of the first movable member 213 and the second inner surface of the first shell, and the first clamping bead 214 moves inward under the thrust of the first shell, so that the first clamping bead 214 is clamped outside the guide wire 6, ensuring the firmness of the connection of the guide wire 6 inside the front end clamping assembly 21;

[0045] The second clamping bead 224 inside the rear end clamping assembly 22 moves outward under the influence of the tension of the guide wire 6, so that the second movable part 223 slides forward, ensuring the smooth movement of the guide wire 6 inside the rear end clamping assembly, so that the front end clamping assembly 21 can drive the guide wire 6 to move intermittently in one direction, and the guide wire 6 cannot be displaced backward, which better meets the needs of neurointerventional surgery.

[0046] In addition, according to the embodiment of the present invention, the gun body 1 is provided with limited sliding holes 101 on the left and right sides respectively, the arc-shaped manual plate 3 is slidably connected to the outer side of the top of the gun body 1, and sliders 301 are respectively provided at both ends of the bottom of the arc-shaped manual plate 3. The sliders 301 are slidably connected in the limited sliding holes 101 and abut against the sliding groove 2101 of the first shell 211. The two sliders 301 are respectively fixedly connected to the left and right sides of the front clamping assembly 21;

[0047] By adopting the above technical solution, the sliding adjustment control of the clamping assembly 21 inside the front end of the gun body 1 can be achieved by pulling the arc-shaped manual plate 3 backward, which makes it easier to use.

[0048] In addition, according to the embodiment of the present invention, a guide slide hole 102 is opened at the top rear end of the gun body 1, a guide rod 302 is provided at the rear side of the arc-shaped manual plate 3, the guide rod 302 is slidably connected in the guide slide hole 102, a spring B4 is sleeved on the outside of the guide rod 302, and the rear end of the spring B4 is in contact with the gun body 1;

[0049] With the above technical solution, when the operator stops pulling the arc-shaped manual plate 3 backward, the arc-shaped manual plate 3 is influenced by the thrust of the spring B 4 to drive the front end clamping assembly 21 of the gun body 1 to move forward, thereby realizing the guide wire 6 conveying operation.

[0050] In addition, according to the embodiment of the present invention, the guide rod 302 is provided with an external thread, the manual nut 5 is threadedly connected to the outside of the guide rod 302, and the front side of the manual nut 5 is in contact with the gun body 1;

[0051] By adopting the above technical solution, the manual nut 5 outside the guide rod 302 can be rotated and adjusted according to the different single conveying distances of the guide wire 6, and the moving stroke of the front clamping assembly 21 of the gun body 1 can be changed to better meet the conveying requirements of the guide wire 6 at different distances.

[0052] The specific usage and function of this embodiment are as follows:

[0053] When the present invention is in use, the arc-shaped manual plate 3 is pulled backward, so that the arc-shaped manual plate 3 drives the front clamping assembly 21 to move backward, and the second movable member 223 inside the rear clamping assembly 22 is pushed by the second spring A 215, which affects the backward movement, shortens the distance between the outer third inclined surface of the second movable member 223 and the inner fourth surface of the second shell, and the second clamping bead 224 is moved inward by the thrust of the second shell, so that the second clamping bead 224 is clamped outside the guide wire 6, thereby ensuring the firmness of the connection of the guide wire 6 inside the rear clamping assembly 22;

[0054] The first clamping bead 214 inside the front end clamping assembly 21 is affected by the guide wire 6 and moves outward, that is, the front end clamping assembly is moved backward by the external force, and the guide wire squeezes the first clamping bead to move outward, so that the first movable member 213 slides forward, releasing the clamping of the front end clamping assembly, thereby ensuring the smooth movement of the guide wire 6 inside the front end clamping assembly 21; when the operator stops pulling the arc-shaped manual plate 3 backward, the arc-shaped manual plate 3 is affected by the thrust of the spring B 4 to drive the front end clamping assembly 21 of the gun body 1 to move forward, and the first movable member 213 inside the front end clamping assembly 21 is affected by the thrust of the first spring A 215 to move backward, shortening the distance between the first outer surface of the first movable member 213 and the second inner surface of the first shell, and the first clamping bead 214 is affected by the thrust of the first shell to move inward, so that the first clamping bead 214 is clamped on the outside of the guide wire 6, thereby ensuring the smooth movement of the guide wire 6 inside the front end clamping assembly 2 The firmness of the connection, the second clamping bead 224 inside the rear end clamping assembly 22 moves outward under the influence of the tension of the guide wire 6, so that the second movable part 223 slides forward, ensuring the smooth movement of the guide wire 6 inside the rear end supporting assembly, as above reciprocating, so that the front end clamping assembly 21 can drive the guide wire 6 to move intermittently in one direction, and the guide wire 6 cannot be displaced backward, which better meets the needs of neurointerventional surgery and ensures the delivery force of the guide wire 6; according to the different single delivery distances required for the guide wire 6, the manual nut 5 outside the guide rod 302 can be rotated and adjusted to change the moving stroke of the clamping assembly 2 inside the front end of the gun body 1 to better meet the needs of delivering the guide wire 6 at different distances.

[0055] Embodiment 2:

[0056] See also Fig.10 and Fig.11 A third assembly hole 2143 is provided at the lower side of the first assembly hole, and a third clamping bead 2141 is slidably provided in the third assembly hole, and the third clamping bead is movably engaged in the first clamping bead; a fourth assembly hole 2243 is provided at the lower side of the second assembly hole, and a fourth clamping bead 2241 is slidably provided in the fourth assembly hole, and the fourth clamping bead is also movably engaged in the first clamping bead.

[0057] Further, the diameter of the first clamping bead is D1, the diameter of the second clamping bead is D2, the diameter of the third clamping bead is D3, and the diameter of the fourth clamping bead is D4; the width of the first assembly hole is W1, the width of the second assembly hole is W2, the width of the third assembly hole is W3, and the width of the fourth assembly hole is W4. Preferably, D1 = D2 > W1 = W2, D3 = D4 > W3 = W4, D1 = D2 > D3 = D4, and W1 = W2 > W3 = W4.

[0058] With the above settings, during the auxiliary wire delivery process, the third and fourth clamping beads come into contact with the wire first. Since they are smaller in size, the force transmission is more sensitive. When they are completely squeezed to a certain extent, the first and third clamping beads start to function, making the wire delivery smoother overall.

[0059] Further, to increase the clamping force of the rear clamping assembly, the following settings can be made: D2 > W2, W2 > D4, D4 < W4, that is, the fourth clamping bead is arranged to pass through the fourth assembly hole.

[0060] Finally, it should be noted that when describing the positions of various components and their mating relationships, etc., usually one / a pair of components are taken as examples. However, those skilled in the art should understand that such positions, mating relationships, etc. also apply to other components / other pairs of components.

[0061] The above description is only an exemplary embodiment of the present invention and is not used to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A guidewire insertion assisting device for neurointerventional surgery, characterized in that: include: A gun body (1); the gun body (1) is hollow inside, and a clamping portion is installed inside the gun body (1), the clamping portion comprising a front clamping assembly (21), the front clamping assembly being slidably connected to the front end of the gun body (1); a rear clamping assembly (22) being fixed to the rear end of the gun body (1); an arc-shaped manual plate (3) is installed on the top of the gun body (1), the arc-shaped manual plate (3) is fixedly connected to the front clamping assembly (21), and a manual nut (5) is connected to the rear end of the arc-shaped manual plate (3); a spring B (4) is connected to the rear end of the top of the gun body (1), and one end of the spring B (4) is in contact with the arc-shaped manual plate (3); a guide wire (6), the guide wire (6) passes through the gun body (1), and the guide wire (6) passes through the inside of the clamping portion in sequence; The front end clamping assembly (21) comprises a first housing (211), a first fixed cover (212), a first movable member (213), a first clamping bead (214) and a first spring A (215); a first surface is provided on the inner side of the first housing (211), the first surface is inclined, the first fixed cover (212) is threadedly connected to the front end of the first housing (211), the first movable member (213) is slidably connected to the inside of the first housing (211), a second surface is provided on the outer rear end of the first movable member (213), the second surface is also inclined, and the front end of the first movable member (213) slides through the first fixed cover (212); The rear end clamping assembly (22) comprises a second housing (221), a second fixed cover (222), a second movable member (223), a second clamping bead (224) and a second spring A (225); a third surface is provided at the inner rear end of the second housing (221), the third surface is inclined, the second fixed cover (222) is threadedly connected to the front end of the second housing, the second movable member (223) is slidably connected to the inside of the second housing, a fourth surface is provided at the outer rear end of the second movable member (223), the fourth surface is also inclined, and the front end of the second movable member (223) slides through the second fixed cover (222); Four first assembly holes (2142) are formed in a circumferential shape on the outer inclined end surface of the first movable member (213), the first assembly holes (2142) are connected to the inside of the first movable member (213), the guide wire (6) slides through the inside of the first movable member (213), a first clamping bead (214) is installed in the first assembly hole (2142), the outer end of the first clamping bead (214) is in contact with the first surface on the inner side of the first housing (211), and the inner end of the first clamping bead (214) is in contact with the guide wire (6); The second assembly hole (2242) is connected to the interior of the second movable member (223), the guide wire (6) slides through the interior of the second movable member (223), a second clamping bead (224) is installed in the second assembly hole (2242), the outer end of the second clamping bead (224) contacts the third surface on the inner side of the second housing, and the inner end of the second clamping bead (224) contacts the guide wire (6); When the front end clamping assembly (21) slides backward, the second clamping bead (224) is affected by the thrust of the second housing and moves inward, so that the second clamping bead (224) is clamped outside the guide wire (6), and the first clamping bead (214) is affected by the resistance of the guide wire (6) and moves outward; when the front end clamping assembly (21) slides forward, the first clamping bead (214) is affected by the thrust of the first housing and moves inward, so that the first clamping bead (214) is clamped outside the guide wire (6), and the second clamping bead (224) is affected by the pulling force of the guide wire (6) and moves outward.

2. The guidewire insertion assisting device for neurointerventional surgery according to claim 1, characterized in that: The first spring A (215) is sleeved on the outside of the first movable member (213), and one end of the first spring A (215) is in contact with the inside of the first fixed cover (212).

3. The guidewire insertion assisting device for neurointerventional surgery according to claim 2, characterized in that: The top rear end of the gun body (1) is provided with a guide sliding hole (102), the rear side of the arc-shaped manual plate (3) is provided with a guide rod (302), the guide rod (302) is slidably connected in the guide sliding hole (102), a spring B (4) is sleeved on the outside of the guide rod (302), and the rear end of the spring B (4) is in contact with the gun body (1).

4. The guidewire insertion assisting device for neurointerventional surgery as claimed in claim 3, characterized in that: The guide rod (302) is provided with an external thread on its exterior, the manual nut (5) is threadedly connected to the exterior of the guide rod (302), and the front side of the manual nut (5) is in contact with the gun body (1).

5. The guidewire insertion assisting device for neurointerventional surgery according to claim 1, characterized in that: The gun body (1) is provided with limited sliding holes (101) on the left and right sides respectively, the arc-shaped manual plate (3) is slidably connected to the outer side of the top of the gun body (1), and sliding blocks (301) are respectively provided at both ends of the bottom of the arc-shaped manual plate (3), the sliding blocks (301) are slidably connected in the limited sliding holes (101), and the two sliding blocks (301) are respectively fixedly connected to the left and right sides of the front clamping assembly (21).

6. The guidewire insertion assisting device for neurointerventional surgery according to claim 1, characterized in that: The first surface and the second surface are arranged in parallel or intersecting with each other, and the third surface and the fourth surface are also arranged in parallel or intersecting with each other.

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