High-strength constraint support of non-invasive balloon catheter and vascular dilation device using constraint support

Abstract

The invention discloses a constraint support of a non-invasive balloon catheter. The constraint support comprises a main body portion which is of a tubular structure and used for covering the outer portion of the balloon catheter and fixing portions which are connected to the two ends of the main body portion and used for being fixedly connected with the balloon catheter, and the constraint support is used for expanding and shrinking along with the balloon catheter and restraining the maximum expanding volume of the balloon catheter. The invention further discloses a non-invasive vascular dilation device. The device comprises the balloon catheter and the constraint support which have compressed forms used for being placed into a blood vessel and expanded forms used for enlarging in the blood vessel respectively, the maximum diameter of the constraint support in the expanded form is smaller than that of the balloon catheter in the expanded form. According to the constraint support of the non-invasive balloon catheter and the non-invasive vascular dilation device, the structures are simple, use is convenient, the therapeutic effect is greatly improved, and damage to the blood vesseland the occurrence possibility of complications are reduced.

Description

technical field [0001] The invention relates to the technical field of angioplasty surgical instruments, in particular to a high-strength constrained stent of a non-implantable balloon catheter and a blood vessel expansion device using the constrained 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...

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

Images