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CN-224207208-U - Guide wire and in-vivo conveying system

CN224207208UCN 224207208 UCN224207208 UCN 224207208UCN-224207208-U

Abstract

The application discloses a guide wire and an in-vivo conveying system. The guide wire comprises a main body part, a front end part and a flexible part, wherein the main body part is in a straight line shape, the front end part is in a bent shape, the flexible part is connected between the main body part and the front end part, or the main body part is connected with the front end part, the flexible part is arranged at the front end part, and the flexibility of the flexible part is larger than that of the main body part and the front end part. Through the mode, when the front end part of the guide wire provided by the application touches the inner wall of the blood vessel, the guide wire can be adaptively bent and contracted, so that the damage to the inner wall of the blood vessel is reduced, and the front end part can pass through the blood vessel more easily.

Inventors

  • DONG WEN

Assignees

  • 武汉唯柯医疗科技有限公司

Dates

Publication Date
20260508
Application Date
20241224

Claims (9)

  1. 1. A guide wire comprising a main body portion having a straight line shape, a front end portion having a curved shape, and a flexible portion connected between the main body portion and the front end portion, or The main body part is connected with the front end part, and the flexible part is arranged at the front end part; Wherein the flexibility of the flexible portion is greater than the flexibility of the main body portion and the front end portion.
  2. 2. The guidewire of claim 1, wherein the main body portion, the distal end portion, and the flexible portion have the same cross-sectional outer diameter, and the flexible portion material has a modulus of elasticity that is less than the modulus of elasticity of the main body portion and the distal end portion.
  3. 3. The guidewire of claim 1, wherein the main body portion, the distal end portion, and the flexible portion are molded from a same material, and wherein the cross-sectional area of the flexible portion is less than the cross-sectional areas of the main body portion and the distal end portion.
  4. 4. The guidewire of claim 3, wherein the flexible portion has a cross-sectional outer diameter that is less than a cross-sectional outer diameter of the main body portion and the distal end portion.
  5. 5. The guidewire of claim 4, wherein a ratio of a cross-sectional outer diameter of the flexible portion to a cross-sectional outer diameter of the main body portion and the tip portion is 0.4-0.8.
  6. 6. The guidewire of claim 3, wherein the guidewire is oppositely grooved at the flexible portion, the groove being on the concave side of the front end.
  7. 7. The guidewire of claim 6, wherein the groove is V-shaped or notch-shaped.
  8. 8. The guidewire of any one of claims 1 to 7, wherein the distal end portion comprises a curved segment and a straight segment connected, the straight segment being parallel to the main body portion, the flexible portion being connected between the curved segment and the main body portion, or The flexible part is arranged on the bending section, or The flexible portion is connected between the curved section and the straight section.
  9. 9. An in vivo delivery system comprising the guidewire of any one of claims 1 to 8.

Description

Guide wire and in-vivo conveying system Technical Field The application relates to the technical field of medical instruments, in particular to a guide wire and an in-vivo conveying system. Background A guidewire is a medical device used to guide a catheter, stent, etc. to a target site within a blood vessel or other lumen. In surgery, the guide wire is required to be adjusted in angle at any time when passing through a particularly tortuous blood vessel so as to smoothly pass through the blood vessel. In intra-aortic balloon counterpulsation, the J-shaped head guide wire used in cooperation with the intra-aortic balloon catheter is required to have a soft head end, and the proximal end has good maneuverability and pushing force. However, due to the complexity of the lesion and the nature of the bending of the vessel itself, conventional straight or bent guide wires are difficult to combine with the above properties and are limited in accessing the vessel. Disclosure of utility model The application mainly provides a guide wire and an in-vivo conveying system, which are used for solving the problem that the self-adaptive adjusting capability is insufficient due to the fact that the existing guide wire is limited by the structural size of the guide wire. In order to solve the technical problems, the technical scheme adopted by the application is to provide a guide wire. The guide wire comprises a main body part, a front end part and a flexible part, wherein the main body part is in a straight line shape, the front end part is in a bent shape, the flexible part is connected between the main body part and the front end part, or the main body part is connected with the front end part, the flexible part is arranged at the front end part, and the flexibility of the flexible part is larger than that of the main body part and the front end part. In some embodiments, the main body portion, the front end portion, and the flexible portion have the same outside diameter in cross section, and the flexible portion material has a modulus of elasticity that is less than the modulus of elasticity of the main body portion and the front end portion. In some embodiments, the main body portion, the front end portion, and the flexible portion are molded from a same material, and a cross-sectional area of the flexible portion is smaller than a cross-sectional area of the main body portion and the front end portion. In some embodiments, the flexible portion has a cross-sectional outer diameter that is smaller than a cross-sectional outer diameter of the main body portion and the front end portion. In some embodiments, the ratio of the cross-sectional outer diameter of the flexible portion to the cross-sectional outer diameters of the main body portion and the front end portion is 0.4-0.8. In some embodiments, the guide wire is oppositely grooved at the flexible portion, the grooves being on the concave side of the front end portion. In some embodiments, the groove is V-shaped or chevron-shaped. In some embodiments, the front end portion includes a curved section and a straight section connected, the straight section being parallel to the main body portion, the flexible portion being connected between the curved section and the main body portion, or the flexible portion being disposed at the curved section, or the flexible portion being connected between the curved section and the straight section. In order to solve the technical problems, the application adopts another technical scheme that an in-vivo conveying system is provided. The intrabody delivery system comprises a guidewire as described above. The application has the beneficial effects that the application discloses a guide wire and an in-vivo conveying system, which are different from the prior art. By providing a flexible portion between the main body portion and the distal end portion in the guide wire, or by providing a flexible portion at the distal end portion, wherein the flexibility of the flexible portion is greater than the flexibility of the main body portion and the distal end portion, when the distal end portion touches the inner wall of the blood vessel, the flexible portion can be adaptively bent and contracted, thereby reducing damage to the inner wall of the blood vessel, and the dimension of the distal end portion in the width direction can be relatively reduced, thereby enabling easier passage through the blood vessel, wherein the width direction is perpendicular to the extending direction of the main body portion. Drawings For a clearer description of embodiments of the application or of solutions in the prior art, the drawings that are necessary for the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are only some embodiments of the application, from which, without the inventive effort, other drawings can be obtained for a person skilled in the art, in which: FIG