Diagonally expanding balloon catheter and balloon base

Abstract

The purpose of the present invention is to provide: a diagonally expanding balloon catheter which does not cause misalignment between the central axis of a blood vessel and the central axis of a catheter body even in a curved blood vessel, in which the balloon is capable of expanding diagonally such that the balloon tilts relative to the body tube, an area of contact of the balloon with the vesseldoes not decrease, the balloon does not crease in a contracted state, and the balloon does not tend to slip, and which is capable of increasing adhesion between a vessel wall and the balloon to prevent leakage of blood; and a balloon base. This balloon catheter is provided with a balloon base (5) on the front end of a tubular catheter body (2) having a predetermined length. The balloon base (5) has a cylindrical base (15) which has a diameter larger than the outer diameter of the catheter body and in which a bore (6) having substantially the same diameter as the outer diameter of the catheterbody, opens both ends of the base (15) and is formed along the entire length of the base (15). The central axis of the bore is tilted at a predetermined angle relative to the central axis of the basewhich is concentric with the central axis of the catheter body, and an outer circumferential surface is formed parallel to the central axis of the base. A balloon (3) is provided on the parallel outer circumferential surface of the base and diagonally expands relative to the central axis of the catheter body (2) when expanding.

Description

technical field [0001] The present invention relates to an oblique inflatable balloon catheter and a base for the balloon. More specifically, it mainly relates to the following balloon catheter and the base for mounting the balloon. In this method, the balloon provided at the distal end of the catheter body can be obliquely inflated even in a curved blood vessel, so that the blood transfusion flow does not directly collide with the blood vessel wall, and the generation of wrinkles can be suppressed in the deflated state of the balloon. Background technique [0002] Generally, the balloon installed on the balloon catheter expands concentrically with respect to the main body of the catheter. Therefore, in the case of a linear blood vessel, the balloon is located at a right angle to the blood vessel, so the indwelling stability is good, and the lumen of the catheter faces the center of the blood vessel relative to the blood vessel, so smooth blood or fluid transfusion can be pe...

AI Technical Summary

Problems solved by technology

[0007] However, this balloon 175 is formed by shaping the above-mentioned structure in advance with respect to the catheter body, so wrinkles are generated on the balloon in a deflated state, and wrinkles generated by the balloon appear on the surface of the catheter body. Concave and convex, and cannot adhere to the surface

Therefore, if the above-mentioned balloon catheter having unevenness formed on the surface due to wrinkles is assumed to be inserted into a blood vessel for the above-mentioned large-volume administration system, there is a risk of damage to the inner wall of the blood vessel due to the unevenness caused by the wrinkles of the balloon.

In addition, similarly to the above-mentioned conventionally known balloon, this problem cannot be solved at the point of being easy to slip.

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