A stent delivery system

Abstract

A stent delivery system includes a handle, a coupling device, a distal outer tube, a safety lock, and a central shaft. The central shaft is disposed in that distal outer tube and connecting device andpenetrates the handle, the central shaft comprises a thin-walled shaft. The handle comprises a fixed handle and a rotary handle, wherein the fixed handle sleeves the front end of the rotary handle.The safety lock is connected with the fixing handle. A guide groove, a guide groove lock and a slider are arranged in the fixed handle and the rotating handle. The slider is sleeved in the guide groove, and the slider moves along the guide groove axially. The end of the connecting device is fixedly connected to the slider. The system also includes a connecting rod and a release handle, wherein theconnecting rod passes through the handle, one end of the connecting rod is fixedly connected with the end of the connecting device, the other end of the connecting rod is fixedly connected with the release handle, and the release handle is arranged at the tail of the rotary handle. The invention provides a stent delivery system to increase the release rate of a pulse-coated stent.

Description

technical field [0001] The present application relates to the technical field of medical devices, in particular to a stent delivery system. Background technique [0002] With the improvement of living standards and the trend of population aging in my country, the incidence of aortic disease is getting worse. At the same time, with the rapid development of industry and high-speed transportation, the incidence of traumatic aortic aneurysm is also increasing. With regard to the development of endovascular treatment technology, the most preferred way for the treatment of aortic diseases is mainly to perform endovascular treatment through minimally invasive intervention into the vascular cavity. [0003] At present, the most important method for endovascular treatment of aortic disease is to place a covered stent at the lesion, and the covered stent isolates the blood vessels at the lesion and rebuilds the blood flow channel. Since the aorta is responsible for the blood supply t...

AI Technical Summary

Problems solved by technology

In use, it was found that although the release of the aortic stent graft by rotating the handle of the stent delivery system has good release accuracy, the release speed is slow and relatively time-consuming, which may easily cause the stent graft to be blocked during the release process. Excessive blood flow time may cause the risk of rupture of blood vessels or aneurysms, and may even cause serious life-threatening conditions such as hemorrhagic stroke caused by excessive pressure in cerebral arteries

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