Guide wire and manufacturing method thereof

Abstract

The invention provides a guide wire and a manufacturing method thereof. The guide wire comprises a variable-diameter mandrel and a protective sleeve. The variable-diameter mandrel comprises a probingsection and an abutting section which are connected in the axial direction, the probing section is in a long strip shape, the abutting section is in a long strip shape under a first preset condition and is in a curled state under a second preset condition, and the abutting section comprises a plurality of equal-diameter sections and variable-diameter sections which are arranged at intervals; the protective sleeve is arranged on the outer ring of the variable-diameter mandrel in a sleeving mode in the axial direction of the variable-diameter mandrel and fixedly connected with the two ends of the variable-diameter mandrel so as to protect the variable-diameter mandrel. The guide wire can effectively reduce the risk of stabbing the side wall of the preset position in contact with the guide wire.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a guide wire and a manufacturing method thereof. Background technique [0002] Interventional surgery causes little trauma to the human body and is less invasive. It is a medical technology that has been rapidly emerging and promoted in recent years. It usually requires a special delivery system to transport diagnostic and treatment equipment, implanted equipment, etc. to the lesion, and the guide wire is the interventional surgery. Commonly used equipment. [0003] At present, most guide wires are elastic metal wires that extend linearly. When stretched with force, they are straight or slightly curved, so as to facilitate penetration into blood vessels, and then release and expand in the body; taking interventional aortic valve replacement surgery as an example In advance, a thin guide wire is inserted through the femoral artery or femoral vein. The front end of the gui...

AI Technical Summary

Problems solved by technology

[0003] At present, most guide wires are elastic metal wires that extend linearly. When stretched with force, they are straight or slightly curved, so as to facilitate penetration into blood vessels, and then release and expand in the body; taking interventional aortic valve replacement surgery as an example In advance, a thin guide wire is inserted through the femoral artery or femoral vein. The front end of the guide wire enters the left ventricle after passing through the aortic valve. The front end of the guide wire is partially crimped to form a support at the bottom of the left ventricle. After the left ventricle, the top part is the penetrating section extending downward roughly along a straight line, and the bottom part is the abutment section, which is gradually curled under the action of the side wall and bottom of the left ventricle. High pressure, which in turn leads to high pressure and therefore the risk of poking the heart chamber wall

Images