Double-balloon conveying device for vascular stent

Abstract

The invention relates to a double-balloon conveying device for a vascular stent in the technical field of medical vascular interventional treatment. The double-balloon conveying device is suitable for patients needing clinical vascular stent treatment, and is composed of the vascular stent, a stent carrying balloon, a post-dilatation balloon, a balloon conveying rod, marking rings and compression and decompression openings. The vascular stent is conveyed, released and post-dilatated through the double-balloon conveying device, better adherence is achieved after the stent is released in a vascular disease part with a uniform diameter or a certain fall, operation efficiency is improved, operation complications are reduced, operation time is shortened, and operation expense is reduced.

Description

Technical field: [0001] The invention relates to a vascular stent delivery device equipped with double balloons in the technical field of medical vascular interventional therapy, and is suitable for patients who need clinical vascular stent treatment. Background technique: [0002] At present, the stent delivery device for clinical vascular interventional therapy is equipped with a balloon matching the diameter and length of the stent, which is used to expand the stent after reaching the vascular lesion site to expand, shape and release the stent. Most patients with vascular lesions need to be implanted with a stent for treatment. The stent is poorly attached to the proximal vessel. 2. Because the length of the stent-loaded balloon matches the stent, sending and withdrawing the balloon to expand the distal and proximal stents may cause damage to the intima of the vessel without the stent. 3. Excessive expansion of the stent-loaded balloon in the stent in situ can cause dam...

AI Technical Summary

Problems solved by technology

Most patients with vascular lesions need to be implanted with a stent for treatment. Stent malapposition to proximal vessel

2. Because the length of the stent-loaded balloon matches the stent, sending and withdrawing the balloon to expand the distal and proximal stent may cause damage to the intima of the vessel without the stent

3. Excessive expansion of the stent-loaded balloon in the stent can cause damage to the distal thinner blood vessels, bulge on the edge of the stent and stent damage

The above problems can be solved clinically by using a post-expansion balloon with a longer diameter and shorter length than the stent-loaded balloon for post-expansion stent, but the following defects still exist: 1. The post-expansion balloon cannot enter the stent smoothly after withdrawing from the stent balloon

2. The proximal edge of the stent can be damaged when the balloon is expanded after delivery

3. Prolonged operation time

4. Surgical costs increase