Non-implanted balloon-catheter constraint support and blood vessel expansion device with the same

Abstract

The invention discloses a non-implanted balloon-catheter constraint support. The non-implanted balloon-catheter constraint support comprises a body part which is of a tubular structure and used for being arranged outside a balloon catheter in a coated mode and fixing parts connected to the two ends of the body part and used for being fixedly connected with the balloon catheter, and the constraintsupport is used for being expanded or shrunk along with the balloon catheter and inhibiting the maximum expanding volume of the balloon catheter. A non-implanted blood vessel expansion device comprises the balloon catheter, and also comprises the constraint support; the balloon catheter and the constraint support have the compressing forms used for being implanted into a blood vessel respectively,and have the expanding forms used for being expanded in the blood vessel, and the maximum diameter of the constraint support in the expanding form is smaller than the maximum diameter of the ballooncatheter in the expanding form. The non-implanted balloon-catheter constraint support and the non-implanted blood vessel expansion device are simple in structure and convenient to use, the treating effect is greatly improved, harm to the blood vessel is reduced, and the occurrence probability of complications is reduced.

Description

technical field [0001] The invention relates to the technical field of angioplasty surgical instruments, in particular to a constraining stent of a non-implantable balloon catheter and a blood vessel expansion device using the constraining stent. Background technique [0002] For cardiovascular disease, balloon angioplasty is one of the most commonly used treatments. Traditional balloon catheters are made into inflated cylindrical balloons with different diameters and lengths according to the size of the patient's blood vessels and the length of the lesion. The working principle is: use the delivery system to place a balloon dilation catheter on At the lesion, after the balloon is inflated, the blood vessel is expanded to realize the expansion of the lumen. [0003] Traditional balloon angioplasty is often accompanied by damage to blood vessels. For example, the diameter of the proximal and distal ends of the balloon is greater than the diameter of the middle of the balloon...

AI Technical Summary

Problems solved by technology

[0006] The mechanism of action of the traditional balloon catheter includes the twisting of the folded balloon during the expansion process and the shear force applied to the vessel wall; due to the limitations of the structure and material of the traditional balloon, as well as the morphological differences of the vascular lesion, the characteristics of anisotropy , leading to the inevitable "dog bone effect" of the balloon during use, causing further trauma to the blood vessel and damage to the blood vessel in the non-lesional area

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