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CN-224220558-U - Guide wire

CN224220558UCN 224220558 UCN224220558 UCN 224220558UCN-224220558-U

Abstract

The utility model discloses a guide wire which comprises a first core wire, a second core wire and a sleeve, wherein the hardness of the second core wire is lower than that of the first core wire, one end of the first core wire is mutually adhered with one end of the second core wire, and the sleeve is sleeved outside the mutually adhered part of the first core wire and the second core wire.

Inventors

  • LI ZHUOHAN
  • HUANG RUILONG
  • KE XIAOXIA
  • CHEN HUANQIAO

Assignees

  • 佛山市迪华科技有限公司

Dates

Publication Date
20260512
Application Date
20250417

Claims (10)

  1. 1. A guidewire, characterized in that: comprising the following steps: a first core wire (100); A second core wire (200) having a hardness lower than that of the first core wire (100), one end of the first core wire (100) being bonded to one end of the second core wire (200); and the sleeve (300) is sleeved outside the mutual bonding position of the first core wire (100) and the second core wire (200).
  2. 2. A guide wire according to claim 1, wherein a first hook (110) is formed at an end of the first core wire (100), a second hook (210) is formed at an end of the second core wire (200), and the first hook (110) and the second hook (210) are hooked and adhered to each other.
  3. 3. A guide wire according to claim 2, wherein the outer side of the end of the first core wire (100) close to the first bending hook (110) and the outer side of the end of the second core wire (200) close to the second bending hook (210) are respectively provided with a glue layer, and the glue layer is located inside the sleeve (300).
  4. 4. A guide wire according to claim 1, wherein a first glue transition ring (310) is arranged between one end of the sleeve (300) and the outside of the second core wire (200).
  5. 5. A guide wire according to claim 1, wherein a second glue transition ring (320) is arranged between the other end of the sleeve (300) and the outside of the first core wire (100).
  6. 6. A guide wire according to claim 1, further comprising a developing spring (400), wherein the developing spring (400) is sleeved outside an end of the second core wire (200) away from the first core wire (100).
  7. 7. A guide wire according to claim 6, wherein a spherical dispensing head (410) is provided between the end of the second core wire (200) remote from the first core wire (100) and the end of the developing spring (400).
  8. 8. A guide wire according to claim 6, wherein a third glue transition ring (420) is provided between the end of the developing spring (400) adjacent to the first core wire (100) and the outside of the second core wire (200).
  9. 9. A guide wire according to claim 1, wherein the first core wire (100) is of stainless steel.
  10. 10. A guide wire according to claim 1, wherein the second core wire (200) is made of nickel-titanium alloy.

Description

Guide wire Technical Field The utility model relates to a medical instrument, in particular to a guide wire. Background The guide wire is mainly applied to medical operation and is a medical instrument for assisting interventional therapy. In order to ensure that the guide wire can be bent and deformed in a certain degree in a blood vessel, the current guide wire is usually made of a material with lower hardness, so that the situation that the guide wire is harder to cause vascular injury can be effectively reduced, but the coaxiality of the guide wire is lower at the moment, when bending actions such as steering and the like of the guide wire are required to be controlled, the bending rate of the guide wire transmitted by external force is higher, namely the precision of controlling the movement of the guide wire is lower, and the operation is not facilitated, so that the guide wire with better flexible deformation capability and operation convenience is required to be considered. Disclosure of utility model The present utility model is directed to a guidewire that overcomes one or more of the problems of the prior art, and at least provides a beneficial choice or creation. The utility model solves the technical problems as follows: A guide wire comprises a first core wire, a second core wire and a sleeve, wherein the hardness of the second core wire is lower than that of the first core wire, one end of the first core wire is mutually bonded with one end of the second core wire, and the sleeve is sleeved outside the bonding position of the first core wire and the second core wire. The technical scheme has the advantages that the first core wire and the second core wire are mutually bonded at the end part positions, the bonding positions are protected by sleeving the sleeve on the bonding positions, when the guide wire is used, the first core wire is closer to a force application point of a user, the second core wire is closer to a target position in a patient body, when the guide wire is required to be controlled and adjusted, the user applies force to the first core wire, the first core wire drives the second core wire to move, and the force application discount rate can be reduced at the moment because the hardness of the first core wire is higher than that of the second core wire, so that the second core wire can more accurately reach the target position, the hardness of the second core wire is lower, and the guide wire can better move along a blood vessel, so that the guide wire has good flexible deformability, the control convenience of the guide wire and the operation efficiency of the operation are improved. As a further improvement of the above technical solution, a first hook is formed at an end of the first core wire, a second hook is formed at an end of the second core wire, and the first hook and the second hook are hooked tightly and adhered to each other. When the end part of the first core wire is connected with the end part of the second core wire, glue is respectively coated on the first bending hook and the second bending hook, then the first bending hook and the second bending hook are mutually hooked tightly, at the moment, the end parts of the first core wire and the second core wire can be matched and aligned rapidly, the bonding of the first core wire and the second core wire is realized by using the glue, and the connection and fixation efficiency of the first core wire and the second core wire is improved. As a further improvement of the technical scheme, the outer side position of the first core wire end part, which is close to the first bending hook, and the outer side position of the second core wire end part, which is close to the second bending hook, are respectively provided with a glue layer, and the glue layer is positioned on the inner side of the sleeve. After the first curved hook and the second curved hook are mutually hooked and bonded, glue is respectively coated on the outer side position of the end part of the first core wire close to the first curved hook and the outer side position of the end part of the second core wire close to the second curved hook to form a glue layer, the sleeve is sleeved on the outer sides of the first core wire and the second core wire, and the sleeve is further connected and fixed on the outer sides of the first core wire and the second core wire by the glue layer. As a further improvement of the technical scheme, a first glue transition ring is arranged between one end of the sleeve and the outer side of the second core wire. The first glue transition ring can strengthen the fixing effect to the sleeve pipe at sleeve pipe one end, is favorable to preventing the sleeve pipe from producing relative slip relative to the second core wire, further improves the stability to sleeve pipe connection. As a further improvement of the technical scheme, a second glue transition ring is arranged between the other end of the sleeve and the outer side