A guide wire with built-in sliding probe

Abstract

The invention discloses a guide wire with a sliding probe inside, which belongs to the field of diagnosis; wherein the movable section at the proximal end of the guide wire is arranged at the proximal end of the wall main body of the guide wire, and the distal end of the movable section at the proximal end of the guide wire is integrally fixed with a protruding part, the protruding part is tightly socketed with the inner wall of the main body of the guide wire wall, the optical fiber passes through the movable section at the proximal end of the guide wire and the protruding part, and is fixedly connected with the movable part at the proximal end of the guide wire; the protruding part and the main body of the guide wire wall The proximal end is clearance fit; the top end of the optical fiber is installed with an optical fiber pressure sensor; a continuous pressure equalizing groove is opened at the far end of the main body of the guide wire wall; an optical fiber activity space is provided between the main body of the guide wire wall and the optical fiber. The invention allows the pressure sensor to slide in a certain range in the guide wire, and measures the pressure within the sliding range through the continuous pressure equalizing groove on the guide wire wall, thereby reducing the damage to the blood vessel wall due to operation and the operation time. A pressure equalizing groove is formed in the area near the distal end of the main body of the guide wire wall, so that on the basis of not changing the material of the guide wire wall, the property that the guide wire wall becomes softer as it approaches the top.

Description

technical field [0001] The invention belongs to the technical field of diagnosis, in particular to a guide wire with a sliding probe inside. Background technique [0002] The pressure sensor of a pressure wire is usually placed at a fixed location on the distal end of the wire. Physicians are often interested in multipoint pressures when using pressure wires for luminal pressure measurements, such as intravascular pressure measurements. For example, in diffuse stenotic lesions, physicians may need to measure pressures distal and proximal to multiple stenosis. This may require repeated pushing and pulling of the pressure wire. It is difficult to push the guide wire in a narrow vessel, and it may cause unnecessary damage to the vessel wall. The purpose of the present invention is to design a guide wire with a pressure sensor that can move axially, and move the pressure sensor inside the guide wire without moving the outer wall of the guide wire, so as to measure multiple po...

AI Technical Summary

Problems solved by technology

However, the problem with this design is that the pressure equalization holes only exist in some discrete fixed positions, which are not necessarily the best places to measure pressure

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