Pre-dilating guide wire and preparation method thereof

A technology of guide wire and core wire, used in dilators, catheters, guide wires, etc., can solve the problem that the guide wire is stuck in the stenotic part of the blood vessel or other places, the cross-sectional area of ​​the core wire at the head end is reduced, and the torque and torque of the guide wire are reduced. Loss and other problems, to achieve the effect of facilitating the passage of the stenosis, improving the success rate of the operation, and increasing the cross-sectional area
CN107362437AInactive Publication Date: 2017-11-21APT MEDICAL HUNAN INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
APT MEDICAL HUNAN INC
Publication Date
2017-11-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a guide wire. The guide wire comprises a far end, a near end and a core wire, the core wire is positioned in a guide wire body and extends from the near end to the far end, a dilating portion is arranged on the core wire, the diameter of the dilating portion is larger than that of the core wire, and a safety net is arranged at a head end, positioned at the far end, of the core wire and is fixedly connected with the head end. The invention further discloses a preparation method of the guide wire. By additionally arranging the safety net at the head end, positioned at the far end, of the core wire, loss of torsion / torque transmission of the guide wire is reduced, and softness and non-deformability of the far end of the guide wire are guaranteed while the phenomenon of 'tail whipping' is eliminated; by arranging the dilating portion on the guide wire, a narrow portion can be pre-dilated by a radial support effect, and an inner cavity of the narrow portion can be dilated to allow a balloon to pass through conveniently. The dilating portion of the pre-dilating guide wire is perfectly round, smooth and soft and cannot cause wounds to blood vessels.
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Description

technical field

[0001] The present application relates to the technical field of medical devices, in particular to a pre-expanded guide wire for intravascular interventional therapy and a preparation method thereof. Background technique

[0002] Cardiovascular and cerebrovascular diseases are the number one killer of health in modern society. The number of people who die from cardiovascular and cerebrovascular diseases in the world is as high as 15 million every year, ranking first among various causes of death. Interventional therapy is currently the main means of clinical treatment of coronary atherosclerotic heart disease. Interventional implantation of balloon catheters or stents can effectively treat stenotic lesions, restore normal blood circulation, and ensure blood supply.

[0003] Guide wire is an indispensable supporting product in interventional medical devices, which has been widely used in medical interventional operations, and plays the role of guide rail and p...

Claims

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