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Coronary ostium stent precise positioning system

A precise positioning and positioning ball technology, applied in the medical field, can solve the problems of difficult operation, deep penetration into target blood vessels, and high cost, and achieve the effects of simple operation, accurate positioning, and low cost

Active Publication Date: 2018-03-27
徐泽升
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above technologies can improve the accurate positioning of the stent to a certain extent, each technology has certain disadvantages such as the stent goes too deep into the target vessel, difficult operation, high cost, etc.

Method used

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  • Coronary ostium stent precise positioning system
  • Coronary ostium stent precise positioning system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1 A support precise positioning system

[0034] The stent precise positioning system of the embodiment of the present invention is applied to improve the stenosis or occlusion at the coronary artery opening, such as figure 1 As shown, the positioning system includes a guide wire 7, a stent 2 and a stent delivery device. The stent delivery device has a shaft tube 1, a pre-expanded balloon 3 located at the front end of the shaft tube 1, and a positioning ball arranged at the rear end of the pre-expanded balloon 3. The balloon 4 , the valve 5 arranged in the shaft tube 1 between the pre-expanded balloon 3 and the positioning balloon 4 , and the joint 6 at the base of the shaft tube 1 .

[0035] The shaft tube 1 has an inner tube 12 and an outer tube 13 into which the inner tube 12 is inserted. The inside of the inner tube 12 constitutes a guide wire lumen 11 for a guide wire. The outer tube 13 is arranged outside the inner tube 12 , and the injection channel 1...

Embodiment 2

[0043] Embodiment 2 A support precise positioning system

[0044] The stent precise positioning system of the embodiment of the present invention is applied to improve the stenosis or occlusion at the coronary artery opening, such as figure 1 As shown, the positioning system includes a guide wire 7, a stent 2 and a stent delivery device. The stent delivery device has a shaft tube 1, a pre-expanded balloon 3 located at the front end of the shaft tube 1, and a positioning ball arranged at the rear end of the pre-expanded balloon 3. Balloon 4, a valve 5 disposed in the shaft tube 1 between the pre-expanded balloon 3 and the positioning balloon 4, and a joint 6 at the base of the shaft tube 1, wherein the pre-expanded balloon 3 and the positioning balloon 4 share a channel to add pressure expansion.

[0045] The shaft tube 1 has an inner tube 12 and an outer tube 13 into which the inner tube 12 is inserted. The inside of the inner tube 12 constitutes a guide wire lumen 11 for a ...

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Abstract

The invention relates to a precise positioning system for a coronary artery opening stent. The system comprises a guide wire, a stent and a stent conveying device for conveying the stent, wherein the stent conveying device comprises a shaft tube, a pre-expanded balloon arranged at the front end of the shaft tube and a positioning balloon positioned at the back end of the pre-expanded balloon; a valve is arranged at the expanding cavity position between the positioning balloon and the pre-expanded balloon; when relatively low pressure is applied, the positioning balloon expands firstly to perform positioning; and pressure is applied continuously, the valve is opened and the pre-expanded balloon is expanded, so that the stent is implanted.

Description

technical field [0001] The invention belongs to the medical field and relates to a precise positioning system for a coronary artery ostium stent. Background technique [0002] Coronary artery ostial lesions refer to severe atherosclerotic lesions within 3 mm from the main coronary artery ostium, which are high-risk complex lesions. In clinical practice, the vast majority of ostial lesions have atherosclerosis accompanied by downstream coronary plaques, and the presence of dense fibrocellular and calcified atheromatous plaques in ostial lesions makes the vessels in the ostial lesions stiff The degree and elastic recoil increase significantly, which causes many problems in the interventional treatment of ostial lesions, such as unique technical requirements for dealing with ostial lesions, low success rate and high follow-up restenosis rate. [0003] Based on the purpose of interventional therapy and the location of the lesion, coronary ostia lesions can generally be divided ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/958A61F2/962
CPCA61F2/958A61F2/962A61F2002/9583A61F2210/00
Inventor 徐泽升徐英恺
Owner 徐泽升
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