Guide wire applicable to clinical intravascular interventional therapy and manufacturing method of guide wire

Abstract

The invention discloses a novel guide wire applicable to clinical intravascular interventional therapy and a manufacturing method of the guide wire. The guide wire comprises a nickel-titanium memory alloy wire core rod, a tungsten-wire spring and a polymer outer coating layer, wherein a conical spring sleeving part is disposed at the front end of the nickel-titanium memory alloy wire core rod, the tungsten-wire spring sleeves the spring sleeving part, and the front end and the rear end of the tungsten-wire spring are fixed on the spring sleeving part through PU glue; the polymer outer coating layer sleeves the nickel-titanium memory alloy wire core rod and the tungsten-wire spring after the tungsten-wire spring sleeves the spring sleeving part; a hydrophilic coating coats the surface of the polymer outer coating layer. The novel guide wire applicable to the clinical intravascular interventional therapy has the excellent pushing performance of a spring guide wire, has extremely good X-ray traceability, and has the advantages of small vascular irritation, good blood and biological compatibility and easiness in blood vessel passing of a polymer super-smooth guide wire.

Description

technical field [0001] The invention relates to a medical device, in particular to a guide wire for interventional treatment used in clinical blood vessels and a manufacturing method thereof. Background technique [0002] As an emerging medical development, minimally invasive intravascular interventional therapy technology has been gradually promoted in China in recent years. The process is to selectively deliver interventional medical devices to the human body through naturally existing vascular channels under the guidance of medical imaging equipment. Important organs and parts, such as heart, liver, brain, kidney, digestive system and reproductive system, are important technologies and methods for diagnosis and treatment, which have the advantages of no need for surgery, less trauma, and relatively low medical expenses. In interventional surgery, the guide wire plays a guiding role in guiding the catheter to the target site and opening the occluded lumen. [0003] Howeve...

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Problems solved by technology

From the material point of view, the stainless steel wire used in the spring guide wire is prone to bending or t

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