Medical intervention guide wire

Abstract

The utility model discloses a medical intervention guide wire which comprises an inner core, a coil and a developing layer, and the inner core comprises a far end and a near end. The coil is wound at the far end of the inner core; the developing layer is arranged between the coil and the inner core and is formed by weaving braided wires, so that the developing layer is tightly attached to the inner core. According to the medical interventional guide wire provided by the utility model, the developing layer formed by weaving the weaving wires is arranged between the coil and the inner core, so that a more visual mark can be formed through the developing layer when the far end of the guide wire is in an interventional operation, the observation is more convenient, and the overall twisting control performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a medical interventional guide wire. Background Art

[0002] As a diagnostic and treatment tool for minimally invasive vascular interventional surgery, medical interventional guidewires play a vital role in the entire minimally invasive interventional diagnosis and treatment process. Especially when facing winding small blood vessels, tiny intracranial arteries or malformed hemangiomas, the correct selection of medical interventional guidewires is the key to the success of minimally invasive interventional diagnosis and treatment. Precise control, precise positioning, good passability and tracking are the prerequisites for minimally invasive interventional diagnosis and treatment operations using medical interventional guidewire technology. In related technologies, it is usually necessary to observe the position of the guidewire during interventional surgery, but existing medical interventional guidewires are not easy to observe and have poor twist control. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, one purpose of the present invention is to provide a medical interventional guidewire, comprising:

[0004] an inner core, the inner core comprising a distal end and a proximal end;

[0005] a coil, the coil being wound around the distal end of the inner core;

[0006] The developing layer is arranged between the coil and the inner core and is woven with braided wire so that the developing layer and the inner core are closely attached.

[0007] Preferably, the proximal surface of the inner core is coated with a hydrophobic coating, the surface of the coil is coated with a hydrophilic coating, and both ends of the coil are respectively bonded and fixed to the inner core.

[0008] Preferably, the thickness of the hydrophobic coating is 0.005-0.1 mm, and the thickness of the hydrophilic coating is 0.001-0.1 mm.

[0009] Preferably, the coil is formed by winding a wire with a circular or rectangular cross-section.

[0010] Preferably, the diameter of the braided wire is 0.01 mm-0.02 mm, and the thickness of the developing layer is 0.03 mm-0.06 mm.

[0011] Preferably, the braided wire is woven to form a plurality of pores, and the pores are used to weld and fix the developing layer to the inner core.

[0012] Preferably, the braided wire is made of polyurethane mixed with tungsten.

[0013] Preferably, a ball head is further provided at the distal end of the inner core, and the ball head is connected to the end of the developing layer.

[0014] Preferably, the ball head is made of a material having a developer.

[0015] The above solution of the utility model includes at least the following beneficial effects:

[0016] The medical interventional guide wire provided by the present invention has a developing layer made of braided wire arranged between the coil and the inner core, so that the distal end of the guide wire can form a more intuitive mark through the developing layer during interventional surgery, thereby making observation more convenient and improving the overall twist control.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0019] Figure 1 This is a cross-sectional view of a medical interventional guidewire provided in an embodiment of the present utility model;

[0020] Figure 2 It is a schematic structural diagram of the developing layer provided in an embodiment of the present utility model;

[0021] Description of Figure Numbers:

[0022] 10. Inner core; 101. Ball head; 20. Coil; 30. Developing layer; 301. Braided wire; 302. Pores.

[0023] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0027] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] The medical interventional guidewire according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Reference Figure 1 and Figure 2 As shown, the medical interventional guide wire provided in the embodiment of the present invention includes: an inner core 10, a coil 20 and a developing layer 30, the inner core 10 includes a distal end and a proximal end; the coil 20 is wound around the distal end of the inner core 10; the developing layer 30 is arranged between the coil 20 and the inner core 10 and is woven with a braided wire 301 so that the developing layer 30 is tightly fitted to the inner core 10.

[0031] Among them, the inner core 10 can be made of any one or any combination of materials such as platinum-iridium alloy, nickel-titanium alloy, tungsten, etc., thereby making the medical interventional guide wire more flexible and able to more smoothly intervene in human blood vessels during interventional surgery; the developing layer 30 can be fixed to the inner core 10 by bonding, welding, etc., so that the developing layer 30 can be tightly fixed between the inner core 10 and the coil 20.

[0032] The medical interventional guidewire provided by the present invention has a developing layer 30 woven with a braided wire 301 set between the coil 20 and the inner core 10, so that the distal end of the guidewire can form a more intuitive mark through the developing layer 30 during the interventional surgery, thereby making it more convenient to observe and improving the overall twist control.

[0033] Specifically, the proximal surface of the inner core 10 is coated with a hydrophobic coating, the surface of the coil 20 is coated with a hydrophilic coating, and both ends of the coil 20 are welded and fixed to the inner core 10; further, the thickness of the hydrophobic coating is 0.005-0.1mm, and the thickness of the hydrophilic coating is 0.001-0.1mm.

[0034] In this embodiment, the hydrophilic coating can be selected from materials such as polyethyleneimine, and the material of the hydrophobic coating can be polytetrafluoroethylene, for example, the thickness of the hydrophobic coating can be 0.008 mm, and the thickness of the hydrophilic coating can be 0.005 mm. It can be understood that by coating the proximal end of the inner core 10 with a hydrophobic coating, the friction of the medical interventional guide wire passing through the blood vessel is reduced, and the tracking performance of the micromedical interventional guide wire can be enhanced. By coating the surface of the coil 20 with a hydrophilic coating, its passage resistance during interventional surgery is reduced, so that the guide wire's passing performance is better.

[0035] As an optional embodiment, the coil 20 is formed by winding a wire with a circular or rectangular cross section. The coil 20 is wound on the inner core 10 and supported by the developing layer 30, so that the coil 20 can provide better flexibility and tracking performance during interventional surgery.

[0036] Specifically, the diameter of the braided wire 301 is 0.01 mm-0.02 mm, and the thickness of the developing layer 30 is 0.03 mm-0.06 mm. Furthermore, the braided wire 301 is woven to form a plurality of pores 302 , and the pores 302 are used to bond and fix the developing layer 30 to the inner core 10 .

[0037] In this embodiment, the material of the braided wire 301 is polyurethane mixed with tungsten. By weaving the braided wire 301, it can be made more flexible and can provide better support for the coil 20. By filling the pores 302 with adhesive to fix the developing layer 30 and the inner core 10, the adhesive can be encapsulated and fixed on both the inside and outside of the developing layer 30, so that the developing layer 30 can be tightly fixed between the inner core 10 and the coil 20, so that the medical interventional guide wire has better support and flexibility, and the overall torque control is improved during interventional surgery.

[0038] Specifically, a ball head 101 is provided at the distal end of the inner core 10, and is connected to the end of the developing layer 30. Furthermore, the ball head 101 is made of a material containing a developer. The provision of the ball head 101 ensures better protection of the blood vessel wall during interventional procedures, and the use of a material containing a developer allows for clearer imaging during interventional procedures, thereby facilitating observation.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0040] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A medical interventional guidewire, characterized in that: include: an inner core, the inner core comprising a distal end and a proximal end; a coil, the coil being wound around the distal end of the inner core; The developing layer is arranged between the coil and the inner core and is woven with braided wire so that the developing layer and the inner core are closely attached.

2. The medical interventional guidewire according to claim 1, characterized in that: The proximal surface of the inner core is coated with a hydrophobic coating, the surface of the coil is coated with a hydrophilic coating, and both ends of the coil are respectively welded and fixed to the inner core.

3. The medical interventional guidewire according to claim 2, characterized in that: The thickness of the hydrophobic coating is 0.005-0.1 mm, and the thickness of the hydrophilic coating is 0.001-0.1 mm.

4. The medical interventional guidewire according to claim 1, characterized in that: The coil is formed by winding a wire with a circular or rectangular cross section.

5. The medical interventional guidewire according to claim 1, characterized in that: The diameter of the braided wire is 0.01 mm to 0.02 mm, and the thickness of the developing layer is 0.03 mm to 0.06 mm.

6. The medical interventional guidewire according to claim 1, characterized in that: The braided wire is woven to form a plurality of pores, and the pores are used to bond and fix the developing layer to the inner core.

7. The medical interventional guidewire according to claim 1, characterized in that: The braided wire is made of polyurethane mixed with tungsten.

8. The medical interventional guidewire according to claim 1, characterized in that: The distal end of the inner core is further provided with a ball head, and the ball head is connected to the end of the developing layer.

9. The medical interventional guidewire according to claim 8, characterized in that: The ball head is made of a material having a developer.

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