Wire guide device

Abstract

The invention discloses a guide wire device, and relates to a medical instrument. The guide wire device comprises a guide wire, a shell assembly and a first adjusting wire. The guide wire is provided with a first cavity, the first cavity extends from the far end of the guide wire to the near end of the guide wire and penetrates through the near end of the guide wire, and the guide wire has the axial direction and the radial direction. The shell assembly comprises a first shell component, a limiting component, a first rotating operation piece and a first traction piece, the first shell component is provided with a first containing cavity, the limiting component, the first rotating operation piece and the first traction piece are all located in the first containing cavity, the limiting component is located at the near end of the first rotating operation piece, and the near end of the guide wire is connected with the limiting component; the first traction piece is located at the far end of the first rotating operation piece, the first rotating operation piece is rotationally connected with the first shell component, the first traction piece is in sliding connection with the first shell component in the axial direction, and the first rotating operation piece is in threaded connection with the first traction piece.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a guide wire device. BACKGROUND

[0002] Adjustable bending guide wire is the "navigator" of interventional surgery. In minimally invasive treatment of cardiovascular, neurovascular, tumor, etc., it needs to pass through the tortuous blood vessels first to establish a path for balloon, stent, microcatheter and other instruments, and its "navigation accuracy" directly determines the success or failure of the operation. Although the adjustable bending guide wire has been widely used in clinical practice, its role is more reflected in providing a stable delivery channel for subsequent instruments or serving as a treatment platform. However, the cerebral and peripheral vessels often branch at sharp angles, and the distal end of the guide wire must form a precise and controllable single-plane bend at any time to accurately enter the target branch. The traditional method is "preoperative hot steam hand shaping": the doctor bends the tip of the guide wire into an estimated angle according to experience, and then uses high-temperature steam to shape it before sending it into the body. But this angle is fixed once it enters the body, if the actual angle of the blood vessel is different from the estimated one, the whole guide wire has to be taken out, reshaped by steam and then sent in again. In this way, the operation time is greatly prolonged, the radiation dose to the doctor and the patient is also sharply increased, and the repeated entry and exit of the guide wire also causes additional damage to the blood vessel intima.

[0003] To overcome the limitation of "one-time angle", the industry has developed adjustable bending guide wire instruments. This kind of instrument usually has an independent lumen pre-fabricated on the inner side of its wall, and the pull wire runs in the lumen, and the bending of the distal end is achieved by pulling the proximal handle. However, for some especially tortuous blood vessel locations, adjustable bending guide wire has limitations in flexibility and passability due to its relatively large outer diameter and complex structure. At this time, the adjustable bending guide wire, which is more flexible and smaller in size, becomes a tool to solve this problem, as it can go further than the guide wire and is more convenient to reach the precise location. At this time, an adjustable bending guide wire needs to be applied in the corresponding scene.

[0004] However, there is a fundamental difference between the structure of the adjustable bending guide wire and the guide wire: the overall diameter of the guide wire is much smaller than that of the guide wire, and it cannot integrate a special lumen for the movement of the pull wire in the side wall like the guide wire. Therefore, it is difficult to directly use the mature configuration of "side wall lumen + pull wire" in the guide wire. The internal space of the guide wire is extremely limited, and the pull wire can only run freely in the lumen of the hollow guide wire, lacking effective guidance and constraint, which makes it a key structural problem for the guide wire to achieve stable and reliable axial movement of the pull wire. SUMMARY

[0005] In view of the above problems, the present application provides a guide wire device which can at least solve part of the above problems.

[0006] According to the embodiments of the present application, the present application provides a guide wire device, comprising: a guide wire having a first cavity extending from a distal end of the guide wire to a proximal end of the guide wire and through the proximal end of the guide wire, the guide wire having an axial direction and a radial direction; a housing assembly comprising a first housing member, a limiting member, a first rotating operation member and a first traction member, the first housing member having a first accommodating cavity, the limiting member, the first rotating operation member and the first traction member being located in the first accommodating cavity, the limiting member being located at a proximal end of the first rotating operation member, the proximal end of the guide wire being connected with the limiting member, the first traction member being located at a distal end of the first rotating operation member, the first rotating operation member being rotationally connected with the first housing member, the first traction member being axially slidably connected with the first housing member, and the first rotating operation member being threadedly connected with the first traction member; a first adjusting wire, a part of the first adjusting wire being located in the first cavity, a distal end of the first adjusting wire being connected with the distal end of the guide wire, and a proximal end of the first adjusting wire being connected with the first traction member.

[0007] In the technical scheme, the rotation movement is converted into linear movement through the thread cooperation between the first rotating operation member and the first traction member, so that the first traction member moves in the axial direction. Through the thread cooperation, the first adjusting wire can avoid being twisted during the traction of the guide wire, that is, the first adjusting wire only moves in the axial direction, so as to realize the bending adjustment of the guide wire. On the one hand, the possibility of the first adjusting wire being twisted is reduced, and the power transmission efficiency, the operation consistency and the structural durability under long-term use of the guide wire are improved.

[0008] In some embodiments of the present application, one of the first rotating operation member and the first traction member is provided with an internal thread, and the other of the first rotating operation member and the first traction member is provided with an external thread, the internal thread and the external thread being threadedly cooperated; and / or, the proximal end of the first rotating operation member is provided with a plug-in hole, an inner surface of the plug-in hole is provided with a convex structure, the first traction member is provided with an external thread with variable pitch, at least part of the convex structure is located in a screw groove of the external thread and can slide in the screw groove in the rotation direction of the external thread.

[0009] In some embodiments of the present application, the first housing member further comprises a housing body and an adapter, the first rotating operation member is rotationally connected with the housing body, the adapter is located at a proximal end of the housing body and is detachably connected with the housing body, and the limiting member is clamped by the housing body and the adapter.

[0010] In some embodiments of the present application, the adapter comprises a peripheral wall surrounding the limiting member, the inner diameter of the peripheral wall decreases from the proximal end of the adapter to the distal end of the adapter, the distal end of the limiting member has a plurality of clamping portions, the plurality of clamping portions are arranged in the circumferential direction of the peripheral wall, and the plurality of clamping portions abut against the peripheral wall and elastically deform to jointly clamp the proximal end of the guide wire. In some embodiments of the present application, the shell assembly further comprises a first elastic member arranged in the first accommodating cavity, the first elastic member is located at the distal end of the first rotating operating member, the first elastic member is in limiting cooperation with the limiting member in the direction in which the first rotating operating member rotates relative to the first shell member, the side of the first elastic member facing the first rotating operating member has a first elastic protrusion, the distal end of the first rotating operating member is provided with a plurality of first tooth grooves, the plurality of first tooth grooves are arranged in the direction in which the first rotating operating member rotates relative to the first shell member, and at least part of the first elastic protrusion can be clamped into one of the first tooth grooves under the elastic force of the first elastic member.

[0011] In some embodiments of the present application, the outer surface of the shell body is provided with an observation window, the outer surface of the first traction member is provided with a plurality of angle marks indicating the bending of the guide wire, the plurality of angle marks are arranged in the axial direction, and any one of the angle marks can be moved to the position of the observation window.

[0012] In some embodiments of the present application, the number of the first adjusting wires is two, the two first adjusting wires are arranged at intervals of 180° in the circumferential direction of the guide wire, and the distal end of the shell body is provided with a first wire winding structure. Among them, one of the first adjusting wires is arranged in the first wire winding structure in the axial direction, and the distance from the proximal end of the first adjusting wire to the proximal end of the first traction member is less than the distance from the first wire winding structure to the proximal end of the first traction member.

[0013] In some embodiments of the present application, the shell assembly further comprises a sleeve, the sleeve is sleeved on the guide wire and connected with the distal end of the adapter, and the outer diameter of the sleeve decreases in the direction from the proximal end of the guide wire to the distal end of the guide wire.

[0014] In some embodiments of the present application, the guide wire device further comprises a second adjusting wire, and the shell assembly further comprises: a second shell member arranged at the proximal end of the first shell member and connected with the first shell member, the second shell member having a second accommodating cavity; a second rotating operating member arranged in the second accommodating cavity and rotationally connected with the second shell member; a second traction member arranged in the second accommodating cavity and slidably connected with the second shell member in the axial direction, the second rotating operating member being threadedly connected with the second traction member; Part of the second adjusting wire is arranged in the first cavity, the distal end of the second adjusting wire is connected with the distal end of the guide wire, the distal end of the second adjusting wire is arranged at an interval from the distal end of the first adjusting wire along the circumference of the guide wire, and the proximal end of the second adjusting wire is connected with the second traction member.

[0015] In some embodiments of the present application, the shell assembly further comprises: The second elastic member is located at the distal end of the second rotating operation member, and is in limit cooperation with one of the first shell member and the second shell member along the direction in which the second rotating operation member rotates relative to the second shell member. The side of the second elastic member facing the second rotating operation member has a second elastic protrusion. The distal end of the second rotating operation member is provided with a plurality of second tooth grooves arranged at intervals along the direction in which the second rotating operation member rotates relative to the second shell member. At least part of the second elastic protrusion can be clamped into one of the second tooth grooves under the elastic force of the second elastic member.

[0016] In some embodiments of the present application, the number of the second adjusting wires is two, and the distal ends of the two second adjusting wires are arranged at an interval of 180° along the circumference of the guide wire. The distal end of the second shell member is provided with a second winding structure. Among them, one second adjusting wire is arranged around the second winding structure along the axial direction, and the distance from the proximal end of the second adjusting wire to the proximal end of the second traction member is less than the distance from the second winding structure to the proximal end of the second traction member.

[0017] In some embodiments of the present application, the distal end of the first adjusting wire is arranged at an interval of 90° from the distal end of the second adjusting wire along the circumference of the guide wire.

[0018] In some embodiments of the present application, the position where the distal end of the first adjusting wire is connected with the distal end of the guide wire is arranged to deviate from the axis of the guide wire along the radial direction. And / or, the position where the distal end of the second adjusting wire is connected with the distal end of the guide wire is arranged to deviate from the axis of the guide wire along the radial direction.

[0019] In some embodiments of the present application, the distal end of the guide wire is provided with a first fixing groove and a second fixing groove, the distal end of the first adjusting wire is fixed in the first fixing groove, and the distal end of the second adjusting wire is fixed in the second fixing groove.

[0020] In some embodiments of the present application, the guide wire comprises a core wire and an outer tube sleeved on the core wire. The outer tube comprises a connecting portion and three or more ring portions. The plurality of ring portions are arranged at intervals along the axial direction. Two adjacent ring portions are connected by the connecting portion. The adjacent two ring portions and the connecting portion therebetween jointly define a gap. The plurality of connecting portions are arranged along the track of a spiral line. The axial direction of the spiral line is the same as the axial direction.

[0021] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a structural diagram of a guide wire device in a straightened state according to some embodiments of this application; Figure 2 This is a structural diagram of a wire guide device in a bent state according to some embodiments of this application; Figure 3 This is a cross-sectional view of the axis passing through the guide wire in a guide wire device according to some embodiments of this application; Figure 4 for Figure 3 A magnified view of section I (rotated 90°); Figure 5 An isometric view of the limiting member and elastic member limiting cooperation in a wire guide device according to some embodiments of this application; Figure 6 and Figure 8 These are partial exploded views from different perspectives of a guide wire device according to different embodiments of this application; Figure 7 for Figure 6 An exploded view from another perspective; Figure 9 This is a cross-sectional view of a wire guide device having two bending units according to some embodiments of this application, the cross-sectional view passing through the axis of the wire; Figure 10 for Figure 9 A magnified view of section II; Figure 11 for Figure 9 A magnified view of section III; Figure 12 This is a partial isometric view of the guide wire in the guide wire device of some embodiments of this application; Figure 13 for Figure 12 Structural diagram; Figure 14 This is a cross-sectional view of a wire guide device according to some embodiments of this application, passing through the wire guide axis. Figure 15aSide view of the guide wire in the straightened state Figures 15b-15e Side view of the guide wire bending in different directions respectively.

[0023] The reference signs in the detailed description of the embodiments are as follows: 100, guide wire device; 10, guide wire; 11, outer tube; 111, ring part; 1111, first ring part; 1112, first fixing groove; 1113, second fixing groove; 112, connecting part; 12, core wire; 20, first adjusting wire; 30, second adjusting wire; 40, housing assembly; 41, first housing member; 411, adapter; 4111, circumferential wall; 4112, insertion part; 4113, clamping protrusion; 412, housing body; 4121, first winding structure; 4122, observation window; 4123, operation window; 42, second housing member; 421, second winding structure; 43, limiting member; 431, axial limiting piece; 4311, clamping part; 432, circumferential limiting piece; 4321, limiting protrusion; 44, first rotation operation piece; 441, first tooth groove; 442, protrusion structure; 45, first traction piece; 451, rivet hole; 452, screw thread; 453, guide groove; 454, angle mark; 46, first elastic piece; 461, first elastic protrusion; 462, limiting groove; 47, second rotation operation piece; 471, second tooth groove; 48, second traction piece; 49, second elastic piece; 491, second elastic protrusion; 50, sleeve; 51, clamping groove; 60, locking screw. Detailed description of the embodiments

[0024] The embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0026] In the description of the embodiments of the present application, the technical terms "first", "second" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly specified and limited.

[0027] Reference herein to "embodiments" means that a particular feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0029] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0030] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0031] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0032] The proximal end in the present application refers to the end close to the operator, and the distal end refers to the end away from the operator.

[0033] According to the embodiments of the present application, please refer to Figures 1-4 The present application provides a guide wire device 100, which comprises a guide wire 10, a housing assembly 40 and a first adjusting wire 20. The guide wire 10 has a first cavity extending from the distal end of the guide wire 10 to the proximal end of the guide wire 10 and penetrating through the proximal end of the guide wire 10, and the guide wire 10 has an axial direction and a radial direction. The housing assembly 40 comprises a first housing member 41, a limiting member 43, a first rotating operating member 44 and a first traction member 45. The first housing member 41 has a first accommodating cavity, and the limiting member 43, the first rotating operating member 44 and the first traction member 45 are located in the first accommodating cavity. The limiting member 43 is located at the distal end of the first rotating operating member 44, and the proximal end of the guide wire 10 is connected with the limiting member 43. The first rotating operating member 44 is rotationally connected with the first housing member 41, and the first traction member 45 is axially and slidably connected with the first housing member 41. The first rotating operating member 44 is threadedly connected with the first traction member 45. Part of the first adjusting wire 20 is arranged in the first cavity, the distal end of the first adjusting wire 20 is connected with the distal end of the guide wire 10, and the proximal end of the first adjusting wire 20 is connected with the first traction member 45.

[0034] The length of the guide wire 10 can be 200 cm, and the specific length can be determined according to the surgical requirements. The outer diameter can be 0.010in~0.035in, which can meet the interventional requirements of various blood vessel diameters.

[0035] The first adjusting wire 20 can be made of stainless steel wire or nickel-titanium alloy wire, or can be a high polymer braided wire, for example, made of 304 or 316L stainless steel. The first adjusting wire 20 runs in the first cavity of the guide wire 10, and the biased layout is conducive to realizing more accurate one-way bending and reducing friction with the internal structure. The first traction member 45 can be formed by injection molding, and can be injection molded by PP material.

[0036] The first traction member 45 and the first adjusting wire 20 can be fixed by bonding, welding or clamping.

[0037] In an example, the housing assembly 40 further comprises a locking screw 60, the distal end of the first traction member 45 is provided with a screw hole, the first adjusting wire 20 is wound around the locking screw 60, and the locking screw 60 is threadedly connected with the screw hole to fix the first adjusting wire 20 in the first traction member 45.

[0038] The limiting member 43 can be one piece or an integral piece composed of multiple pieces connected with each other.

[0039] In an example, the limiting member 43 is provided with a conveying channel through which the first adjusting wire 20 passes, the conveying channel being in communication with the first accommodating cavity and the first cavity respectively, and part of the first adjusting wire 20 is located in the conveying channel.

[0040] The first traction member 45 and the first shell member 41 are in sliding connection through the sliding fit of the guide groove 453 and the guide protrusion. Specifically, the surface of the first traction member 45 facing the first shell member 41 is provided with an axially extending guide groove 453, and the inner side of the first shell member 41 facing the first traction member 45 is provided with an axially extending guide protrusion, and the guide groove 453 and the guide protrusion are in sliding fit.

[0041] The first traction member 45 can be but is not limited to a tubular or columnar structure. In an example, the first traction member 45 is a hollow pipe, and the inside of the first traction member 45 is provided with cross-shaped reinforcing ribs.

[0042] The connection between the proximal end of the guide wire 10 and the limiting member 43 includes but is not limited to welding, clamping fixation or bonding, etc.

[0043] In this technical solution, through the threaded fit of the first rotating operation member 44 and the first traction member 45, the rotational motion is converted into linear motion through the first traction member 45, so that the first traction member 45 moves in the axial direction, and through this threaded fit, the first adjusting wire 20 can be prevented from twisting during the pulling of the guide wire 10, that is, the first adjusting wire 20 only moves in the axial direction of itself to realize the bending of the guide wire 10, which on the one hand reduces the possibility of entanglement of the first adjusting wire 20 due to twisting, and improves the power transmission efficiency of the guide wire 10, the operation consistency and the structural durability under long-term use.

[0044] In some embodiments of the present application, please refer to Figure 4 , Figures 6-8 One of the first rotating operation member 44 and the first traction member 45 is provided with an internal thread, and the other of the first rotating operation member 44 and the first traction member 45 is provided with an external thread, and the internal thread and the external thread are in threaded fit.

[0045] In an example, taking the first rotating operation member 44 and the first traction member 45 as both being cylindrical structures as an example, the outer periphery of the first traction member 45 is provided with an external thread, and the distal end of the first rotating operation member 44 is provided with an internal thread, and the two are in threaded fit.

[0046] The outer peripheral surface of the first rotating operation member 44 can be provided with a plurality of grooves or anti-slip textures to facilitate manual rotation operation. For easy operation, a part of the first rotating operation member 44 is exposed to the operation window 4123, and the first traction member 45 can be moved in the axial direction by actuating the first rotating operation member 44 in the operation window 4123.

[0047] The cooperation of the internal thread and the external thread can improve the rotation accuracy of the first rotation operation member 44 relative to the first traction member 45, reduce the rotation resistance on one hand, and improve the control accuracy of the first adjusting wire 20 on the other hand, accurately adjust the bending angle of the distal end of the guide wire 10, improve the power transmission efficiency, and reduce the operation difficulty.

[0048] In some embodiments of the present application, please refer to Figure 8 The proximal end of the first rotation operation member 44 is provided with a plug-in hole, the inner surface of the plug-in hole is provided with a protruding structure 442, the first traction member 45 is provided with an external thread with variable pitch, at least part of the protruding structure 442 is located in the screw groove of the external thread, and can slide in the screw groove along the rotation direction of the external thread.

[0049] The pitch gradually increases or gradually decreases from the proximal end to the distal end of the first traction member 45.

[0050] Through the variable pitch, when the speed of the first rotation operation member 44 is unchanged, the change speed of the distal end of the guide wire 10 can be increased or decreased, and the differential adjustment of the bending of the guide wire 10 is realized, so as to increase the flexibility of the adjustment.

[0051] In some embodiments of the present application, please refer to Figure 4 The first housing member 41 further comprises a housing body 412 and an adapter 411, the first rotation operation member 44 is rotationally connected with the housing body 412, the adapter 411 is arranged at the proximal end of the housing body 412 and detachably connected with the housing body 412, and the limiting member 43 is clamped by the housing body 412 and the adapter 411.

[0052] The connection between the adapter 411 and the housing body 412 includes but is not limited to threaded connection or clamping, etc.

[0053] The materials of the housing body 412 and the adapter 411 can be metal or plastic, for example, ABS plastic.

[0054] In this embodiment, the detachable connection between the adapter 411 and the housing body 412 facilitates the replacement and fixation of the guide wire 10 and the adjusting wire, which is beneficial to the later maintenance.

[0055] In other embodiments, the adapter 411 and the housing body 412 can be fixed by adhesion, and the limiting member 43 can be fixed to the housing body 412 or the adapter 411, which can be fixed by adhesion, welding or screw connection, etc.

[0056] In some embodiments of the present application, please refer to Figure 4The adapter 411 comprises a circumferential wall 4111 surrounding the limiting member 43, and the inner diameter of the circumferential wall 4111 decreases from the proximal end of the adapter 411 to the distal end of the adapter 411. The distal end of the limiting member 43 has a plurality of clamping portions 4311 which are arranged at intervals in the circumferential direction of the circumferential wall 4111, and the plurality of clamping portions 4311 abut against the circumferential wall 4111 and elastically deform to jointly clamp the proximal end of the guide wire 10. In an example, the circumferential wall 4111 is generally a conical cylinder structure. The adapter 411 and the shell body 412 can be connected by screwing. Specifically, the adapter 411 is provided with an internal thread, and the shell body 412 is provided with an external thread, and the two are screwed together. The limiting member 43 is provided with an abutting portion extending in the circumferential direction of the guide wire 10, and the abutting portion abuts against the adapter 411. By rotating the adapter 411 and the shell body 412, the shell body 412 is pressed against the abutting portion of the limiting member 43. At the same time, the distal end of the clamping portion 4311 abuts against the circumferential wall 4111 and elastically deforms, contracts radially and clamps the guide wire 10 to fix the guide wire 10.

[0057] The number of clamping portions 4311 can be two or more. In an example, the clamping portion 4311 is four, and the distal end of the limiting member 43 can be cut into two cutouts which are arranged at intervals of 90° in the circumferential direction of the guide wire 10 to form a cross-shaped notch, so that the clamping portion 4311 is formed between the two adjacent cutouts, and the distal end of the clamping portion 4311 is a free end. The clamping portion 4311 can be made of copper, copper alloy or spring steel.

[0058] The limiting member 43 can be a split structure or an integral structure. For example, the limiting member 43 can be a split structure, specifically comprising an axial limiting member 431 and a circumferential limiting member 432, and the proximal end of the axial limiting member 431 is inserted into or screwed with the distal end of the circumferential limiting member 432, or the axial limiting member 431 and the circumferential limiting member 432 can be integrally formed, and the distal end of the axial limiting member 431 has the clamping portion 4311. In this embodiment, the proximal end of the guide wire 10 is clamped by the clamping portion 4311, and the clamping portion 4311 and the circumferential wall 4111 can be slid relative to each other by loosening the adapter 411 and the shell body 412, so that the clamping portion 4311 releases the clamping of the guide wire 10, and the guide wire 10 can be disassembled, which facilitates the replacement of the guide wire 10 and the fixing of the first adjusting wire 20 and the traction member.

[0059] In some embodiments of the present application, please refer to Figures 4-7The shell assembly 40 further comprises a first elastic member 46 arranged in the first accommodating cavity. The first elastic member 46 is located at the proximal end of the first rotary operating member 44 and is in position-limiting cooperation with the position-limiting member 43 in the direction in which the first rotary operating member 44 rotates relative to the first shell member 41. The side of the first elastic member 46 facing the first rotary operating member 44 is provided with a first elastic protrusion 461. The distal end of the first rotary operating member 44 is provided with a plurality of first tooth grooves 441 which are arranged at intervals in the direction in which the first rotary operating member 44 rotates relative to the first shell member 41. At least part of the first elastic protrusion 461 can be clamped into one of the first tooth grooves 441 under the elastic force of the first elastic member 46.

[0060] The first elastic member 46 can be fixed to the proximal end of the position-limiting member 43 or can be in position-limiting cooperation with the position-limiting member 43 through a circumferential position-limiting structure.

[0061] In an example, the first elastic member 46 is an annular sheet, the inner periphery of which forms a position-limiting groove 462, and the proximal end of the position-limiting member 43 is provided with a position-limiting protrusion 4321 which is in position-limiting cooperation with the position-limiting groove 462 in the direction in which the first rotary operating member 44 rotates relative to the shell body 412. The position-limiting protrusion 4321 is provided in a plurality of numbers and is arranged at intervals in the direction in which the first rotary operating member 44 rotates relative to the first shell member 41. Each position-limiting protrusion 4321 corresponds to one position-limiting groove 462. In another example, the first elastic member 46 can be fixed to the position-limiting member 43 through welding, screw connection or riveting, etc. to realize position-limiting cooperation in the direction in which the first rotary operating member 44 rotates relative to the first shell member 41.

[0062] The distal end of the first rotary operating member 44 is provided with a plurality of teeth which are arranged at intervals in the direction in which the first rotary operating member 44 rotates relative to the first shell member 41, and a first tooth groove 441 is formed between any two adjacent teeth.

[0063] The interval angle between any two adjacent first tooth grooves 441 can be equal or unequal. The first tooth grooves 441 can be divided into a plurality of groups, and the interval angle between any two adjacent first tooth grooves 441 in the same group is equal, and the interval angle between any two adjacent first tooth grooves 441 in different groups can be equal or unequal.

[0064] In an example, the interval angle between any two adjacent first tooth grooves 441 in the circumferential direction of the guide wire 10 is in the range of 6°-15°.

[0065] Taking 30 first tooth grooves 441 as an example, one of the first tooth grooves 441 is taken as a starting point, and the first tooth grooves 441 are arranged in a clockwise or counterclockwise manner.

[0066] In the first 1-10 first tooth grooves 441, the interval angle between two adjacent first tooth grooves 441 is 6°, and the bending angle of the distal end of the guide wire 10 is 0°-60°. This stage provides a small angle increment, which is dedicated to fine adjustment in the early stage of bending, and is convenient for fine adjustment in sensitive or narrow blood vessel segments, and effectively avoids tissue damage caused by sudden angle changes.

[0067] In the 11th-18th first tooth grooves 441, the interval angle between two adjacent first tooth grooves 441 is 12°, and the bending angle of the distal end of the guide wire 10 is 60°-150°. This stage is a conventional adjustment area, which ensures a certain adjustment accuracy while improving the adjustment efficiency, and meets the rapid shaping needs of most blood vessel paths.

[0068] In the 19th-20th first tooth grooves 441, the angle between two adjacent first tooth grooves 441 is 15°, and the bending angle of the distal end of the guide wire 10 is 150°-180°. This stage provides a large angle increment, which is used for rapid adjustment in the late stage of bending. The large tooth pitch angle enables the doctor to quickly complete the final positioning of the distal end of the guide wire 10 through the smallest hand rotation.

[0069] The bending angle of the distal end of the guide wire 10 is the included angle between the tangent line of the distal end of the guide wire 10 when it is bent and the initial axis of the guide wire 10 when it is not bent.

[0070] Through the limiting cooperation of the first elastic member 46 and the limiting member 43, and the clamping and fixing of the limiting member 43 by the shell body 412 and the adapter 411, when the first rotation operation member 44 is screwed, the rotation of the first elastic member 46 can be limited, so that the first elastic protrusion 461 can be elastically deformed and clamped into any one of the first tooth grooves 441, realizing accurate adjustment of the bending of the guide wire 10, and the first elastic member 46 will emit a clamping sound, enhancing the adjustment hand feeling. In the above-mentioned embodiment in which the first traction member 45 is provided with an external thread with variable pitch, through the cooperative action of the interval angle between two adjacent first tooth grooves 441 and the variable pitch, the linear displacement amount of the movement of the first traction member 45 is accurately matched with the bending angle increment required in the current stage, so as to provide accurate tactile feedback for the operator, which is conducive to realizing rapid, accurate and flexible adjustment of the bending of the distal end of the guide wire 10. In some embodiments of the present application, please refer to Figure 1 and Figure 8 The outer surface of the shell body 412 is provided with an observation window 4122, and the outer surface of the first traction member 45 is provided with a plurality of angle marks 454 indicating the bending of the guide wire 10. The plurality of angle marks 454 are arranged in the axial direction, and any one of the angle marks 454 can be moved to the position of the observation window 4122.

[0071] Different angle identifiers 454 can correspond to different angle intervals, and the angle identifiers 454 can be identified by angle intervals or colors. Taking colors as the angle identifiers 454 as an example, four color intervals of blue, cyan, yellow, and red are sequentially arranged on the outer surface of the first traction member 45 along the axial direction, and the sizes of the four colors along the axial direction can be equal, and correspond to corresponding scales. The scales corresponding to each color can be equal or not equal, for example, the scale length corresponding to each color is 2 mm, the blue color corresponds to the starting position, the corresponding scale is 0-2 mm, and the corresponding guide wire 10 is in the straight state (the bending angle of the guide wire 10 is 0°), the cyan color corresponds to the scale of 2 mm-4 mm, and the bending angle range of the guide wire 10 is 0-60°, the yellow color corresponds to the scale of 4 mm-6 mm, and the bending angle range of the guide wire 10 is 60°-120°, and the red color corresponds to the scale of 6 mm-8 mm, and the bending angle range of the guide wire 10 is 120°-180°. Different colors can be directly corresponding to angle scales.

[0072] When the first traction member 45 moves axially, different angle identifiers 454 can be moved to the range of the observation window 4122, so that the operator can judge the bending amplitude of the distal end of the guide wire 10, thereby enabling the bending adjustment of the guide wire 10 to be more accurate.

[0073] In some embodiments of the present application, the number of the first adjustment wires 20 is two, and the two first adjustment wires 20 are arranged at an interval of 180° along the circumference of the guide wire 10. The distal end of the shell body 412 is provided with a first winding structure 4121. Among them, one first adjustment wire 20 is wound on the first winding structure 4121 along the axial direction, and the distance from the proximal end of the first adjustment wire 20 to the proximal end of the first traction member 45 is less than the distance from the first winding structure 4121 to the proximal end of the first traction member 45.

[0074] The first winding structure 4121 can be a winding hole, a rod, or a fixed pulley structure, which can be arranged at the proximal end of the first traction member 45.

[0075] Through the arrangement of the two first adjustment wires 20, the bending of the distal end of the guide wire 10 in opposite directions can be realized, the flexibility of bending is improved, the damage to the blood vessel caused by the rotation of the guide wire 10 due to the single bending direction is reduced, and the convenience of operation is improved.

[0076] In some embodiments of the present application, please refer to Figure 3 and Figure 4 The shell assembly 40 further comprises a sleeve 50, the sleeve 50 is sleeved on the guide wire 10 and connected with the distal end of the adapter 411. Along the direction from the proximal end of the guide wire 10 to the distal end of the guide wire 10, the outer diameter of the sleeve 50 presents a decreasing trend.

[0077] The connection between the sleeve 50 and the adapter 411 can be welding, screwing, bonding or clamping, etc.

[0078] The sleeve 50 can be made of flexible polymer.

[0079] In an example, the distal end of the adapter 411 is formed with a plug-in part 4112, the proximal end of the sleeve 50 is plug-in matched with the plug-in part 4112, and the outer surface of the plug-in part 4112 is provided with a clamping protrusion 4113, and the inner circumferential surface of the sleeve 50 is provided with a clamping groove 51, which is clamped and matched with the clamping protrusion 4113 to limit the movement of the sleeve 50 along the axial direction relative to the adapter 411.

[0080] The proximal end of the guide wire 10 can pass through the lumen of the sleeve 50 and then enter the delivery channel of the limiting member 43 and be clamped by the clamping part 4311.

[0081] By providing the sleeve 50, the stress concentration at the connection part between the guide wire 10 and the adapter 411 is effectively dispersed, the risk of fatigue bending at this part caused by repeated operation or disassembly and assembly is significantly reduced, and the overall reliability and maintainability of the instrument in long-term clinical operation are improved.

[0082] In some embodiments of the present application, referring to Figures 9-11 , the guide wire device 100 further comprises a second adjusting wire 30, and the housing assembly 40 further comprises a second housing member 42, a second rotating operating member 47 and a second traction member 48. The second housing member 42 is arranged at the proximal end of the first housing member 41 and connected with the first housing member 41, and the second housing member 42 has a second accommodating cavity. The second rotating operating member 47 is arranged in the second accommodating cavity and rotationally connected with the second housing member 42. The second traction member 48 is arranged in the second accommodating cavity and axially slidably connected with the second housing member 42, and the second rotating operating member 47 is threadedly connected with the second traction member 48. Part of the second adjusting wire 30 is arranged in the first cavity, the distal end of the second adjusting wire 30 is connected with the distal end of the guide wire 10, and along the circumferential direction of the guide wire 10, the distal end of the second adjusting wire 30 is arranged at intervals with the distal end of the first adjusting wire 20, and the proximal end of the second adjusting wire 30 is connected with the second traction member 48.

[0083] The second housing member 42 can also be provided with the same operating window 4123 as the first housing member 41 described above, to facilitate the rotation operation of the second rotating operating member 47. The structure of the second rotating operating member 47 can be the same as or different from that of the first rotating operating member 44.

[0084] The structure of the threaded connection between the second rotating operating member 47 and the second traction member 48 can be the same as that of the threaded connection between the first rotating operating member 44 and the first traction member 45.

[0085] The connection mode of the proximal end of the second adjusting wire 30 with the second traction member 48 can be the same as the connection mode of the first adjusting wire 20 with the first traction member 45.

[0086] In this scheme, the second adjusting wire 30 is arranged to increase the bending direction of the distal end of the guide wire 10, further increasing the flexibility of operation; meanwhile, the second rotating operation member 47 is threadedly connected with the second traction member 48, and the rotating motion is converted into linear motion through the second traction member 48, so that the second traction member 48 moves along the axial direction. Through the thread connection, the second adjusting wire 30 can avoid twisting during the traction of the guide wire 10, that is, the second adjusting wire 30 can realize the bending of the guide wire 10 only by moving along the axial direction of itself, which can reduce the possibility of winding of the second adjusting wire 30 due to twisting, improve the power transmission efficiency of the guide wire 10, the operation consistency and the structural durability under long-term use.

[0087] In some embodiments of the present application, please refer to Figure 9 and Figure 11 The housing assembly 40 further comprises a second elastic member 49, which is located at the distal end of the second rotating operation member 47. Along the direction in which the second rotating operation member 47 rotates relative to the second housing member 42, the second elastic member 49 is limitedly connected with one of the first housing member 41 and the second housing member 42. The side of the second elastic member 49 facing the second rotating operation member 47 has a second elastic protrusion 491, and the distal end of the second rotating operation member 47 is provided with a plurality of second tooth grooves 471. Along the direction in which the second rotating operation member 47 rotates relative to the second housing member 42, the plurality of second tooth grooves 471 are arranged at intervals. Under the elastic force of the second elastic member 49, at least part of the second elastic protrusion 491 can be clamped into one of the second tooth grooves 471.

[0088] The structure of the second elastic member 49 can be the same as that of the first elastic member 46, or can be different.

[0089] The second rotating operation member 47 has the same structure as the first rotating operation member 44.

[0090] The structure of the second tooth groove 471 can be the same as that of the first tooth groove 441.

[0091] When the second rotating operation member 47 is screwed, the second elastic protrusion 491 of the second elastic member 49 cooperates with the second tooth groove 471 to emit a clicking sound, so as to realize the precise adjustment of the bending of the guide wire 10, and the second elastic member 49 will emit a clamping sound, which is beneficial to enhance the adjustment feeling. In the embodiment in which the second traction member 48 is provided with an outer thread with variable pitch, the linear displacement of the second traction member 48 is accurately matched with the bending angle increment required in the current stage through the cooperation between the interval angle of the two adjacent second tooth grooves 471 and the variable pitch, so as to provide the operator with accurate tactile feedback, and facilitate the rapid, accurate and flexible adjustment of the distal end bending of the guide wire 10. In some embodiments of the present application, please refer to Figure 9 and Figure 11 , the number of the second adjustment wires 30 is two, and the distal ends of the two second adjustment wires 30 are spaced 180° along the circumference of the guide wire 10, and the distal end of the second housing member 42 is provided with a second winding structure 421. Among them, one second adjustment wire 30 is wound on the second winding structure 421, and the proximal end of the second adjustment wire 30 is axially spaced from the proximal end of the second traction member 48 by a distance less than the distance between the second winding structure 421 and the proximal end of the second traction member 48.

[0092] The second winding structure 421 can be a winding hole, a rod or a fixed pulley structure.

[0093] Through the arrangement of the two second adjustment wires 30, the bending of the distal end of the guide wire 10 in opposite directions can be realized, the flexibility of the bending is improved, the damage to the blood vessel caused by the rotation of the guide wire 10 due to the single bending direction is reduced, and the convenience of operation is improved.

[0094] In some embodiments of the present application, the distal end of the first adjustment wire 20 is spaced 90° from the distal end of the second adjustment wire 30 along the circumference of the guide wire 10.

[0095] Taking two first adjustment wires 20 and two second adjustment wires 30 as an example, the first adjustment wire 20, the second adjustment wire 30, the first adjustment wire 20 and the second adjustment wire 30 are arranged in sequence and spaced 90° along the circumference of the guide wire 10. For easy understanding, as shown in Figure 15a , the bending directions of the two first adjustment wires 20 are A direction and B direction in sequence, and the bending directions of the two second adjustment wires 30 are C direction and D direction in sequence.

[0096] Please refer to Figures 15b-15e, under the premise that the second rotating operation member 47 is not moved, rotating the first rotating operation member 44 makes one first adjusting wire 20 retract, and the other first adjusting wire 20 is in a loosened state, so as to make the distal end of the guide wire 10 bend towards the A direction, when the first rotating operation member 44 is reversely rotated, the movement directions of the two first adjusting wires 20 are opposite, so as to reduce the bending amplitude of the distal end of the guide wire 10 towards the A direction, and make the distal end of the guide wire 10 bend from the A direction towards the B direction. In the adjusting process, the bending change of the distal end of the guide wire 10 is that the bending amplitude towards the A direction first decreases, then becomes straight, and finally bends towards the B direction. Under the premise that the first rotating operation member 44 is not moved, adjusting the second rotating operation member 47, and it can be known by analogy that the distal end of the guide wire 10 can be switched between the C direction and the D direction. When the first rotating operation member 44 and the second rotating operation member 47 are adjusted at the same time, the bending direction of the distal end of the guide wire 10 can be between AC, AD, BC or BD, so as to further increase the flexibility of the adjustment.

[0097] Through the above setting, the bending direction and the bending amplitude of the guide wire 10 can be accurately and conveniently controlled, which is beneficial to reduce the operation difficulty of the guide wire device 100, and the whole bending adjustment operation is realized by converting the rotating motion into the linear motion of the first adjusting wire 20 and the second adjusting wire 30 through the screw rotation operation, which is beneficial to improve the transmission efficiency and reduce the possibility of winding of the first adjusting wire 20 due to torsion, thereby improving the power transmission efficiency, operation consistency and structural durability of the guide wire 10 under long-term use.

[0098] In some embodiments of the present application, the first traction member 45 is provided with a first channel through which the first adjusting wire 20 and the second adjusting wire 30 pass, the second traction member 48 is provided with a second channel through which the second adjusting wire 30 passes, the side walls of the first channel and the second channel are both provided with rivet holes 451, the proximal ends of the first adjusting wire 20 and the second adjusting wire 30 are pre-pressed into conical rivet joints, and are fixed by riveting after being inserted into the rivet holes 451 and injecting glue for solidification.

[0099] In some embodiments of the present application, please refer to Figure 12 , the distal end of the guide wire 10 is provided with a first fixed groove 1112 and a second fixed groove 1113, the distal end of the first adjusting wire 20 is fixed in the first fixed groove 1112, and the distal end of the second adjusting wire 30 is fixed in the second fixed groove 1113.

[0100] The distal end of the first adjusting wire 20 can be fixed in the first fixed groove 1112 by means of adhesion, welding or hanging.

[0101] The distal end of the second adjusting wire 30 can be fixed in the second fixed groove 1113 by means of adhesion, welding or hanging.

[0102] In the above embodiment where the number of the first adjusting wire 20 and the second adjusting wire 30 is plural, the number of the corresponding first fixed slot 1112 and the second fixed slot 1113 is also plural, and the number is consistent with the number of the corresponding first adjusting wire 20 and the second adjusting wire 30. For example, two first fixed slots 1112 are arranged at an interval of 180° along the circumference of the guide wire 10, and two second fixed slots 1113 are arranged at an interval of 180° along the circumference of the guide wire 10, and the first fixed slot 1112 and the second fixed slot 1113 are arranged at an interval of 90°.

[0103] Through the above arrangement, the possibility of the distal end of the first adjusting wire 20 and the distal end of the second adjusting wire 30 being loosened from the distal end of the guide wire 10 can be reduced, and the reliability of the bending adjustment can be improved.

[0104] In some embodiments of the present application, the distal end of the guide wire 10 is provided with a hemispherical head or a guide cone, which plays a guiding role and reduces the resistance during transportation.

[0105] In some embodiments of the present application, please refer to Figure 13 and Figure 14 The guide wire 10 includes a core wire 12 and an outer tube 11 sleeved outside the core wire 12, and the outer tube 11 includes a connecting portion 112 and three or more ring portions 111. The plurality of ring portions 111 are arranged at an interval along the axial direction, and the adjacent two ring portions 111 are connected through the connecting portion 112, and the adjacent two ring portions 111 and the connecting portion 112 therebetween jointly define a notch. The plurality of connecting portions 112 are arranged along the track of a spiral line, and the axial direction of the spiral line is the same as the axial direction.

[0106] The outer tube 11 can be a nickel-titanium alloy wire. The ring portion 111 and the connecting portion 112 can be fixed by welding, or can be an integrally formed structure. For example, a hollow wire is cut by laser cutting to form the above-mentioned notch.

[0107] The plurality of connecting portions 112 can be arranged along a single spiral or a double spiral track.

[0108] Through the arrangement of the above structure, while ensuring the pushing rigidity of the guide wire 10, the flexibility and torsional performance of the distal end are significantly improved, and the stimulation to the blood vessel wall in the tortuous blood vessel can be effectively reduced. Compared with the guide wire 10 with a traditional spring structure, the anti-bending ability and over-bending stability are better.

[0109] The core wire 12 and the outer tube 11 have the above-mentioned first cavity therebetween, and the distal end of the first adjusting wire 20 and the distal end of the second adjusting wire 30 are respectively connected with the distal end of the core wire 12 and run in the first cavity formed between the core wire 12 and the outer tube 11. The specific interval angle can be arranged in the above-mentioned manner.

[0110] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently. Such modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A wire guide device, characterized in that, include: A guidewire having a first cavity extending from the distal end of the guidewire to the proximal end of the guidewire and penetrating the proximal end of the guidewire, the guidewire having axial and radial dimensions; A housing assembly includes a first outer shell component, a limiting component, a first rotating operating component, and a first traction component. The first outer shell component has a first receiving cavity. The limiting component, the first rotating operating component, and the first traction component are all located within the first receiving cavity. The limiting component is located at the distal end of the first rotating operating component. The proximal end of the guide wire is connected to the limiting component. The first rotating operating component is rotatably connected to the first outer shell component. The first traction component is slidably connected to the first outer shell component along the axial direction. The first rotating operating component is threadedly connected to the first traction component. A first adjusting wire is partially disposed within the first cavity, with the distal end of the first adjusting wire connected to the distal end of the guide wire and the proximal end of the first adjusting wire connected to the first traction member.

2. The guide wire device according to claim 1, characterized in that, One of the first rotating operating member and the first traction member is provided with an internal thread, and the other of the first rotating operating member and the first traction member is provided with an external thread, wherein the internal thread and the external thread are threadedly engaged. And / or, the proximal end of the first rotating operating member is provided with a plug hole, the inner surface of the plug hole is provided with a protrusion structure, the first traction member is provided with a variable pitch external thread, at least a portion of the protrusion structure is located in the thread groove of the external thread, and can slide in the thread groove along the direction of the external thread.

3. The guide wire device according to claim 1, characterized in that, The first outer shell component further includes an outer shell body and an adapter. The first rotating operating component is rotatably connected to the outer shell body. The adapter is located at the proximal end of the outer shell body and is detachably connected to the outer shell body. The limiting component is clamped by the outer shell body and the adapter together.

4. The guide wire device according to claim 3, characterized in that, The adapter includes a peripheral wall surrounding the limiting member. The inner diameter of the peripheral wall decreases from the proximal end to the distal end of the adapter. The distal end of the limiting member has a plurality of clamping portions. The plurality of clamping portions are spaced apart along the circumferential direction of the peripheral wall. The plurality of clamping portions abut against the peripheral wall and undergo elastic deformation to jointly clamp the proximal end of the guidewire.

5. The guide wire device according to claim 3, characterized in that, The housing assembly further includes a first elastic member disposed within the first receiving cavity. The first elastic member is located at the proximal end of the first rotating operating member. Along the direction of rotation of the first rotating operating member relative to the first outer shell component, the first elastic member is limited and engaged with the limiting member. The side of the first elastic member facing the first rotating operating member has a first elastic protrusion. The distal end of the first rotating operating member is provided with a plurality of first tooth grooves. Along the direction of rotation of the first rotating operating member relative to the first outer shell component, the plurality of first tooth grooves are spaced apart. Under the elastic force of the first elastic member, at least a portion of the first elastic protrusion can be engaged into one of the first tooth grooves.

6. The guide wire device according to claim 3, characterized in that, The outer surface of the housing body is provided with an observation window, and the outer surface of the first traction member is provided with a plurality of angle marks indicating the bending of the guide wire. The plurality of angle marks are arranged along the axial direction, and any one of the angle marks can be moved to the position of the observation window.

7. The guide wire device according to claim 3, characterized in that, The number of the first adjusting wires is two, and the two first adjusting wires are arranged 180° apart along the circumference of the guide wire. The far end of the outer shell body is provided with a first winding structure. In one of the first adjusting wires, the first adjusting wire is wound around the first winding structure, and along the axial direction, the distance from the proximal end of the first adjusting wire to the proximal end of the first traction member is less than the distance from the first winding structure to the proximal end of the first traction member.

8. The guide wire device according to claim 3, characterized in that, The housing assembly also includes a sleeve fitted over the guidewire and connected to the distal end of the adapter. The outer diameter of the sleeve decreases from the proximal end to the distal end of the guidewire.

9. The guide wire device according to any one of claims 1-8, characterized in that, The guide wire device further includes a second adjusting wire, and the housing assembly further includes: A second outer shell member is disposed near the first outer shell member and connected to the first outer shell member, the second outer shell member having a second receiving cavity; The second rotating operating member is disposed in the second receiving cavity and rotatably connected to the second outer shell component; The second traction member is disposed in the second receiving cavity and is slidably connected to the second outer shell component along the axial direction; the second rotating operating member is threadedly connected to the second traction member. A portion of the second adjusting wire is disposed within the first cavity. The distal end of the second adjusting wire is connected to the distal end of the guide wire. Along the circumference of the guide wire, the distal ends of the second adjusting wire and the distal ends of the first adjusting wire are spaced apart. The proximal end of the second adjusting wire is connected to the second traction member.

10. The guide wire device according to claim 9, characterized in that, The housing assembly also includes: The second elastic member is located at the distal end of the second rotating operating member and is positioned along the direction of rotation of the second rotating operating member relative to the second housing member. The second elastic member is in a limiting engagement with one of the first housing member and the second housing member. The side of the second elastic member facing the second rotating operating member has a second elastic protrusion. The distal end of the second rotating operating member is provided with a plurality of second tooth grooves. The plurality of second tooth grooves are spaced apart along the direction of rotation of the second rotating operating member relative to the second housing member. Under the elastic force of the second elastic member, at least a portion of the second elastic protrusion can be engaged in one of the second tooth grooves.

11. The guide wire device according to claim 9, characterized in that, The number of the second adjusting wires is two, and the distal ends of the two second adjusting wires are arranged 180° apart along the circumference of the guide wire. The distal end of the second housing component is provided with a second winding structure. In one of the second adjusting wires, the second adjusting wire is wound around the second winding structure, and along the axial direction, the distance from the proximal end of the second adjusting wire to the proximal end of the second traction member is less than the distance from the second winding structure to the proximal end of the second traction member.

12. The guide wire device according to claim 11, characterized in that, Along the circumference of the guide wire, the distal end of the first adjusting wire is spaced 90° apart from the distal end of the second adjusting wire.

13. The guide wire device according to claim 9, characterized in that, The distal end of the guide wire is provided with a first fixing groove and a second fixing groove. The distal end of the first adjusting wire is fixed in the first fixing groove, and the distal end of the second adjusting wire is fixed in the second fixing groove.

14. The guide wire device according to any one of claims 1-8, characterized in that, The guide wire includes a core wire and an outer tube sleeved on the core wire. The outer tube includes a connecting portion and three or more ring portions. The multiple ring portions are spaced apart along the axial direction. Adjacent two ring portions are connected by the connecting portion, and adjacent two ring portions and the connecting portion between them jointly define a notch. The multiple connecting portions are arranged along the trajectory of a spiral line, and the axial direction of the spiral line is the same as the axial direction.

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