Nerve intervention guide wire extending device

Abstract

The utility model provides a nerve intervention guide wire extension device, which relates to the technical field of medical instruments and comprises a catheter, an intervention guide wire, an extension guide wire and an extension device, the head end of the intervention guide wire is arranged in a blood vessel, and the tail end of the intervention guide wire is arranged in the catheter; one part of the extension guide wire is arranged in the catheter; the extension device is arranged in the catheter, and the two ends of the extension device are fixedly connected with the intervention guide wire and the extension guide wire respectively. By adopting a knob connection mechanism, the intervention guide wire and the extension guide wire are combined, the defects that a conventional micro guide wire is designed to be short and cannot be exchanged for a long time are overcome, and the stability and the safety of micro guide wire control in the interventional operation process are remarkably improved. Due to the design of the device, a doctor has higher flexibility when treating a complex vascular structure, the length and the position of the guide wire can be adjusted more easily, and different clinical requirements can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to a neurointervention guide wire extension device. Background Art

[0002] In the field of neurointerventional surgery, the application of guidewire technology is the key to achieving precise interventional treatment. Current technology mainly uses guidewires of standard length (such as 200 cm long) for intravascular operations. These guidewires are designed to pass through narrow, occluded or tortuous vascular paths. However, the existing technology faces several significant limitations. First, when the 200 cm long standard guidewire is operated, especially when it is used with a microcatheter to pass through complex and occluded lesions to reach the "true lumen" of the blood vessel, it is necessary to withdraw the microcatheter to implement the "long exchange" technology, which will face the embarrassing situation that the microguidewire is not long enough. Secondly, due to the limitation of the guidewire length, doctors may need to frequently replace the guidewire when dealing with complex vascular structures, which increases the complexity of the operation and may cause additional trauma to the patient, not only increasing the risk of surgery, but also prolonging the operation time.

[0003] Based on the shortcomings of the prior art, there is an urgent need for a neurointervention guidewire extension device. Utility Model Content

[0004] The purpose of the utility model is to provide a neurointervention guidewire extension device to improve the above problems. In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] The present application provides a neurointerventional guidewire extension device, which includes a catheter, an interventional guidewire, an extension guidewire and an extension device, wherein the head end of the interventional guidewire is arranged in a blood vessel, and the tail end of the interventional guidewire is arranged in the catheter; a part of the extension guidewire is arranged in the catheter; the extension device is arranged in the catheter, and the two ends of the extension device are fixedly connected to the interventional guidewire and the extension guidewire respectively.

[0006] Furthermore, the extension device includes a nut portion fixedly arranged at the tail end of the interventional guide wire and a stud portion fixedly arranged at the head end of the extension guide wire, a threaded hole is opened at the center of the nut portion, and an external thread matching the threaded hole is arranged on the outer circle of the stud portion.

[0007] Furthermore, the extension device is a rotary structure, and the connection part between the tail end of the intervention guide wire and the extension guide wire is symmetrically arranged at two ends of the extension device.

[0008] Further, the extension device includes a knob body and an adjusting piece, the knob body is arranged in the extension device and is arranged in the catheter, the knob body is rotatably connected to the catheter, a groove is arranged at the center of the knob body, a through hole matching with the groove is opened on the outer wall of the catheter, a protrusion matching with the groove is arranged at the end of the adjusting piece, and the adjusting piece is fixedly connected to the knob body through the through hole.

[0009] Furthermore, the groove is cross-shaped, and the end of the adjusting member is provided with a cross protrusion that matches the groove.

[0010] Furthermore, the knob body is made of nickel-titanium alloy.

[0011] Furthermore, the knob body is disc-shaped, the interventional guide wire is fixed on the outer circle of the knob body, an inclined through hole is opened on the knob body at a relative position to the fixing position of the interventional guide wire, the diameter of the inclined through hole is larger than the diameter of the extension guide wire, and the extension guide wire is arranged in the inclined through hole.

[0012] Furthermore, the catheter also includes a guidewire guiding device, and the guidewire guiding device is arranged between the extension device and the extension guidewire.

[0013] Furthermore, the guidewire guiding device includes a curved portion and a funnel portion which are internally interconnected, the curved portion is connected to the inclined through hole, the inner hole axis of the curved portion is colinear with the axis of the inclined through hole, and the funnel portion is connected to the catheter.

[0014] Furthermore, the guidewire guiding device is made of polyurethane.

[0015] Furthermore, the outer side of the catheter is provided with an anti-slip texture.

[0016] The beneficial effects of the utility model are:

[0017] The utility model combines the interventional guide wire and the extension guide wire by adopting a knob connection mechanism. This design significantly reduces the risk of the guide wire slipping during surgery and improves the stability and accuracy of the operation. The design of this device allows doctors to have greater flexibility when dealing with complex vascular structures, and can more easily adjust the length and position of the guide wire to meet different clinical needs.

[0018] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the embodiments of the utility model. The purpose and other advantages of the utility model can be achieved and obtained by the structures specifically pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a neurointervention guide wire extension device in which the extension device is threadedly connected in an embodiment of the present application;

[0021] Figure 2 This is a structural schematic diagram of a neurointervention guidewire extension device in which the extension device is a knob structure in an embodiment of the present application;

[0022] Figure 3 A cross-sectional view of the neurointervention guidewire extension device described in an embodiment of the present application;

[0023] Figure 4 for Figure 3 Enlarged view at position I in the figure.

[0024] Markings in the figure: 1, catheter; 11, guide wire guiding device; 111, bending part; 112, funnel part; 2, interventional guide wire; 3, extension guide wire; 4, extension device; 41, knob body; 42, adjustment part. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0026] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present utility model, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0027] like Figure 1 As shown, this embodiment provides a neurointerventional guidewire 2 extension device 4, which includes a catheter 1, an interventional guidewire 2, an extension guidewire 3 and an extension device 4. This combination ensures the versatility and applicability of the device, and is suitable for different types of neurointerventional surgeries. The head end of the interventional guidewire 2 is disposed in the blood vessel, and the tail end of the interventional guidewire 2 is disposed in the catheter 1. A portion of the extension guidewire 3 is disposed in the catheter 1. This design provides additional length and flexibility, making it easier to operate in a complex vascular environment. The extension device 4 is disposed in the catheter 1, and the two ends of the extension device 4 are fixedly connected to the interventional guidewire 2 and the extension guidewire 3, respectively. This structural design allows the guidewire to be effectively extended according to surgical needs while maintaining sufficient stability and controllability.

[0028] Preferably, in some embodiments, the extension device 4 includes a nut portion fixedly arranged at the tail end of the interventional guidewire 2 and a stud portion fixedly arranged at the head end of the extension guidewire 3, a threaded hole is provided at the center of the nut portion, and an external thread matching the threaded hole is provided on the outer circle of the stud portion. The extension guidewire 3 is connected to the interventional guidewire 2 by a rotational connection. Among them, the diameters of the interventional guidewire 2 and the extension guidewire 4 are equal, and the outer diameter of the extension device 4 is equal to or slightly larger than the diameter of the guidewire. Such a design allows the extended guidewire to be a whole and will not affect the normal surgical operation in the catheter.

[0029] Preferably, if Figure 3 As shown, in this embodiment, the extension device 4 adopts a rotary structure, wherein the connection parts of the tail end of the interventional guide wire 2 and the extension guide wire 3 are symmetrically arranged at the two ends of the extension device 4. This symmetrical design provides better balance and stability, making the operation of the guide wire in the blood vessel smoother and safer. By simplifying the docking operation process of the guide wire, the design of the rotary structure can significantly reduce the operation time and reduce the risk of complications caused by guide wire adjustment.

[0030] Preferably, if Figure 2 and Figure 3 As shown, the extension device 4 includes a knob body 41 and an adjustment member 42. The knob body 41 is arranged in the extension device 4 and is arranged in the catheter 1. The knob body 41 is rotatably connected to the catheter 1. The main function of the knob body 41 is to connect the intervention guide wire 2 and the extension guide wire 3 through a rotational action. This mechanism provides a fast, efficient and safe way to extend or adjust the length of the guide wire, greatly improving the flexibility of the operation. A groove is arranged in the center of the knob body 41, and a through hole is provided on the outer wall of the catheter 1 to match the groove. A protrusion is arranged at the end of the adjustment member 42 to match the groove. The adjustment member 42 is fixedly connected to the knob body 41 through the through hole to control the rotation of the knob body 41.

[0031] Preferably, if Figure 2As shown, the groove is cross-shaped, and the end of the adjustment member 42 is provided with a cross protrusion that matches the groove. The cross-shaped design simplifies the operation process of the knob body 41, allowing the doctor to adjust the connection of the guide wire more quickly and accurately, and can use other cross-head medical instruments to adjust the knob body 41. At the same time, this design also reduces the errors that may occur during the operation and improves the overall safety and efficiency of the operation.

[0032] Preferably, the knob body 41 is made of nickel-titanium alloy, which is a material with excellent biocompatibility, reducing the risk of allergic reaction and rejection reaction of patients to the material.

[0033] Preferably, if Figure 3 As shown, the knob body 41 is in the shape of a disc. This shape is easy to operate and rotate, and provides convenience for doctors when accurately adjusting the guide wire. The interventional guide wire 2 is fixedly set on the outer circle of the knob body 41. This configuration not only ensures the stability of the interventional guide wire 2, but also facilitates the rapid adjustment of the guide wire during surgery. An inclined through hole is provided on the knob body 41 at a relative position to the fixed position of the interventional guide wire 2. The diameter of the inclined through hole is larger than the diameter of the extension guide wire 3, and the extension guide wire 3 is arranged in the inclined through hole. The design of the inclined through hole not only provides a path for the introduction of the extension guide wire 3, but also allows the extension guide wire 3 to be adjusted at different angles, thereby increasing the flexibility of the surgical operation.

[0034] Preferably, if Figure 3 As shown, the catheter 1 further includes a guidewire guiding device 11, which is disposed between the extension device 4 and the extension guidewire 3. Operations inside the catheter 1, especially when introducing the extension guidewire 3 into the inclined through hole, may encounter challenges of limited space and line of sight. The guidewire guiding device 11 alleviates these operational difficulties by providing a clear path and guiding mechanism.

[0035] Preferably, if Figure 4As shown, the guide wire guiding device 11 includes a curved portion 111 and a funnel portion 112 that are interconnected internally. The curved portion 111 is connected to the inclined through hole, and this design ensures that the extended guide wire 3 can smoothly pass through the curved portion 111 from the catheter 1 and enter the inclined through hole. The shape and arrangement of the curved portion 111 accurately match the inclined through hole to minimize the resistance and friction of the guide wire when passing through. The inner hole axis of the curved portion 111 is colinear with the axis of the inclined through hole, and this alignment design is crucial to ensure the smooth passage and accurate positioning of the guide wire. This not only simplifies the operation process, but also reduces the risk of misoperation of the guide wire. The funnel portion 112 is connected to the catheter 1, and its design is similar to a guide entrance, which helps guide the extended guide wire 3 to smoothly enter the curved portion 111. This design of the funnel portion 112 greatly reduces the difficulty of operation when the guide wire is introduced, especially when the line of sight is limited or the operating space is narrow. Through these carefully designed components, the guide wire guiding device 11 can effectively improve the fluency and safety of the entire operation. The combination of the curved portion 111 and the funnel portion 112 makes the introduction and passage of the guide wire more efficient, thereby reducing possible operational errors that may occur during the operation.

[0036] Preferably, the guidewire guiding device 11 is made of polyurethane. Polyurethane is generally a material with good biocompatibility, which reduces the adverse reactions of patients to the material and makes the device more suitable for long-term or complex medical operations.

[0037] Preferably, if Figure 2 As described above, the outer side of the catheter 1 is provided with an anti-skid texture. The anti-skid texture increases the surface friction of the catheter 1, allowing the doctor to hold the catheter 1 more firmly during operation, reducing the risk of hand slippage or misoperation.

[0038] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0039] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A neurointervention guidewire extension device, characterized in that: include: Catheter (1); An interventional guide wire (2), wherein the head end of the interventional guide wire (2) is arranged in the blood vessel, and the tail end of the interventional guide wire (2) is arranged in the catheter (1); an extension guide wire (3), a portion of which is disposed within the catheter (1); and An extension device (4), wherein the extension device (4) is arranged in the catheter (1), and the two ends of the extension device (4) are respectively fixedly connected to the intervention guide wire (2) and the extension guide wire (3).

2. The neurointervention guidewire extension device according to claim 1, characterized in that: The extension device (4) comprises a nut portion fixedly arranged at the tail end of the interventional guide wire (2) and a stud portion fixedly arranged at the head end of the extension guide wire (3), a threaded hole being provided at the center of the nut portion, and an external thread matching the threaded hole being provided on the outer circle of the stud portion.

3. The neurointervention guidewire extension device according to claim 1, characterized in that: The extension device (4) is a rotary structure, and the connection part between the tail end of the intervention guide wire (2) and the extension guide wire (3) is symmetrically arranged at the two ends of the extension device (4).

4. The neurointervention guidewire extension device according to claim 3, characterized in that: The extension device (4) comprises a knob body (41) and an adjusting member (42); the knob body (41) is arranged in the extension device (4) and is arranged inside the catheter (1); the knob body (41) is rotatably connected to the catheter (1); a groove is arranged at the center of the knob body (41); a through hole matching the groove is opened on the outer wall of the catheter (1); a protrusion matching the groove is arranged at the end of the adjusting member (42); and the adjusting member (42) is fixedly connected to the knob body (41) through the through hole.

5. The neurointervention guidewire extension device according to claim 4, characterized in that: The groove is cross-shaped, and the end of the adjusting member (42) is provided with a cross protrusion that matches the groove.

6. The neurointervention guidewire extension device according to claim 4, characterized in that: The knob body (41) is made of nickel-titanium alloy.

7. The neurointervention guidewire extension device according to claim 4, characterized in that: The knob body (41) is in the shape of a disc, and the interventional guide wire (2) is fixedly arranged on the outer circle of the knob body (41). An inclined through hole is provided on the knob body (41) at a position relative to the fixed position of the interventional guide wire (2), and the diameter of the inclined through hole is slightly larger than the diameter of the extension guide wire (3), and the extension guide wire (3) is arranged in the inclined through hole.

8. The neurointervention guidewire extension device according to claim 7, characterized in that: The catheter (1) further comprises a guide wire guiding device (11), wherein the guide wire guiding device (11) is arranged between the extension device (4) and the extension guide wire (3).

9. The neurointervention guidewire extension device according to claim 8, characterized in that: The guidewire guiding device (11) comprises a curved portion (111) and a funnel portion (112) which are interconnected internally, the curved portion (111) is connected to the inclined through hole, the inner hole axis of the curved portion (111) is colinear with the axis of the inclined through hole, and the funnel portion (112) is connected to the catheter (1).

10. The neurointervention guidewire extension device according to claim 1, characterized in that: The outer side of the catheter (1) is provided with an anti-slip texture.

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