Balloon catheter for linearly segmenting gland tissue

Abstract

The invention relates to a balloon catheter for linearly segmenting gland tissue. The balloon catheter for linearly segmenting the gland tissue comprises a balloon body, an elastic connecting piece and a linear segmenting piece; the middle of the elastic connecting piece is fixed to the surface of the balloon body; the linear segmenting piece is arranged in the middle of the elastic connecting piece; the two ends of the elastic connecting piece are fixedly connected with the two ends of the balloon body respectively; and the position between the middle of the elastic connecting piece and the end of the elastic connecting piece is separated from the balloon body. The technical problems that a cutting balloon is poor in hyperplasia gland expansion effect and poor in applicability are solved by the invention.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a balloon catheter for linearly dividing glandular tissue. Background technique [0002] With the development of balloon dilation technology, cutting balloon, as an important branch in the field of vascular dilation, has also developed rapidly. The cutting balloon is to use the micro blade carried on the surface of the balloon to cut the atherosclerotic plaque on the inner wall of the blood vessel through balloon expansion. Can get better results. [0003] The principle of the cutting balloon is to cut the blood vessel wall with hardened plaque by concentrating the expansion stress on the blade on the surface of the balloon during the expansion process of the balloon, without exerting a huge expansion pressure on the balloon The diseased blood vessels can be dilated. Since the process of balloon dilation of the blood vessel is irregular, as the balloon dilation pressure increase...

AI Technical Summary

Problems solved by technology

Since the stress during balloon expansion is disordered, continuous pressurization and expansion of the gland will often lead to multiple tear damage or bleeding of the gland, and even damage the glandular nerve, resulting in severe postoperative pain, bringing pain to the patient. The actual use effect is not ideal, which also leads to the use of repeated dilation in clinical practice, in order to gradually obtain the desired dilation effect

[0005] In the prior art, there are mainly two ways to prepare cutting balloons. One is to directly fix and install the blade on the surface of the balloon, but in this way, the blade is usually installed on the base first, and then the base is bonded to the surface of the balloon. , because the blade base and the high-pressure dilation balloon body are both hard materials, there is a risk of loose fixation; the other is that the sharp cutting protrusion is set separately from the balloon, and the cutting protrusion is connected by extending to the proximal and distal ends of the balloon Although there is no risk of the cutting protrusion and the surface of the balloon being fixedly connected in the card slot of the tube, this method is likely to cause the risk of displacement of the cutting protrusion during the expansion process because the cutting protrusion is not fixedly connected to the balloon. At the same time, in order to match the deformation caused by balloon expansion, the length of the cutting protrusion assembly must be longer than the overall length of the balloon, which leads to the accumulation of redundant cutting protrusion assemblies at both ends of the balloon when the balloon is deflated. , resulting in a larger balloon contraction size, which is not conducive to passing through the narrow lesion area in the contracted state of the balloon

In addition, the above two kinds of cutting balloons have the problems of complex production process and high cost, which is not conducive to large-scale production

[0006] Aiming at the above-mentioned problems of ineffective expansion of hyperplastic glands and poor applicability of the cutting balloon, no effective solution has been given so far.

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