Rapid-release vascular stent delivery system

Abstract

The invention discloses a rapid-release vascular stent delivery system, and belongs to the technical field of vascular stent delivery. The rapid-release vascular stent delivery system comprises a rotary handle, a fixed tube, a back cover, an internally threaded tube, a movable inner cylinder, a three-way joint, an outer sheath tube, an ejector tube, an inner tube, a button, an infusion tube, and an elastic positioning block. The one end of the rotary handle is movably connected to the fixed tube and the other end of the rotary handle is fastened to the back cover. The internally threaded tubeis fixed on the inner coaxial line of the rotary handle. In the early stage of releasing a vascular stent, the rotary handle rotates slowly to drive the movable inner cylinder and the outer sheath tube to move backward, and the ejector tube ejects the ejector tube out of the outer sheath tube. After a release position is accurately determined, as entering into the later stage of rapid release, thebutton is pressed down and rapidly moves backward along chute holes of the fixed tube, and the three-way joint is separated from the movable inner cylinder to rapidly release the vascular stent in combination with the outer sheath tube. The rapid-release vascular stent delivery system of the present invention can greatly shorten operation time and reduce surgical risk.

Description

Technical field [0001] The invention relates to a quick-release vascular stent delivery system, belonging to the technical field of vascular stent delivery. Background technique [0002] As the main treatment method for vascular stenosis, vascular stents are used more and more clinically. Generally, according to different processing methods, vascular stents can be divided into laser-cut stents and braided stents. The vascular stent delivery system refers to a delivery system that can deliver the vascular stent to the stenosis lesion and release it accurately. [0003] At present, braided stents are widely used because of their good flexibility and can bend severely blood vessels without causing secondary damage to the blood vessels. During the operation of the braided stent, due to its product characteristics, the stent must be stretched and placed in a thin outer sheath in order to be introduced into the blood vessel. During the operation, it is delivered to the lesion through ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a fast-release vascular stent delivery system, which solves the problem that the current delivery system releases the vascular stent relatively slowly.

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