Medical device for pretreatment of cardiac stent before implantation

Abstract

The invention relates to a medical device for pretreatment of a cardiac stent before implantation. One end of the top cone pipe is inserted and fixed with a telescopic sleeve member, and one end of the telescopic sleeve member is milled with a threaded shaft. The inner wall of the tail cone pipe is milled with threads, one end of the fork frame threaded sleeve is screwed into one end of the threads of the inner wall of the tail cone pipe, and a fork frame threaded sleeve is internally screwed with a threaded shaft. Tablets are arranged on the other side of the inner wall thread of the tail cone tube. An external thread is arranged at one end extension of the sealing cap, a medicament cavity is arranged at one end extension of the external thread, and an internal space of the medicament cavity contains tablets. The sealing cap is screwed into the tail cone tube through an external thread. The cardiac stent tube is sleeved on the telescopic cannula and the two ends of the cardiac stent tube respectively resist the technical means between the top cone tube and the tail cone tube, thus realizing the manufacture of a medical instrument of pretreatment before cardiac stent implantation.

Description

technical field [0001] The invention relates to a medical device for pretreatment before heart stent implantation. Background technique [0002] Cardiac stent, also known as coronary artery stent, is a medical device commonly used in cardiac interventional surgery, which has the function of dredging arteries. The main materials are stainless steel, nickel-titanium alloy or cobalt-chromium alloy. It first appeared in the 1980s and experienced the development of metal stents, coated stents, and soluble stents. The initial challenge in developing coronary stents was how to make them both tough and stiff. If the stent is tough, it can pass through coronary arteries with indeterminate directions and large branch angles; if the stent is hard, it can support the dilated stenotic artery lumen so that it will not retract. The stent design engineers made unremitting efforts in material selection and structure, solved various problems, and finally successfully produced the first-gen...

AI Technical Summary

Problems solved by technology

However, at present, this second-generation arterial stent still lacks some necessary technical measures in terms of the stability of "coating" a layer of drug film and the adjustment of the pore size of the initial cardiac stent during surgery.

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