A mechanism for taking out an intravascular stent and a recoverable intravascular stent utilizing the mechanism

Abstract

The invention relates to medical apparatus. A mechanism for taking out an intravascular stent includes a hollow cylindric mechanism main body which is a shrinkable mechanism capable of radial shrinkage. The mechanism main body includes a hook head and at least two connecting ropes arranged along the circumferential direction. One end of each connecting rope is connected to the hook head and the other end of each connecting rope is an end for connecting an intravascular stent body. The length direction of the connecting ropes is from the hook head to the intravascular stent body in an inclinedand outward extending manner. The mechanism for taking out an intravascular stent and the intravascular stent are characterized in that (1) the disclosed mechanism is provided with the hook head thatcan be drawn into a catheter sheath conveniently, and the mechanism main body is the shrinkable mechanism capable of radial shrinkage so that the mechanism main body can be stored in and taken out ofthe catheter sheath conveniently, and also can be put into the catheter sheath and led into a blood vessel conveniently.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a vascular stent body. Background technique [0002] Studies have shown that after the vascular function is restored, the vascular stent has no meaning in the body. Long-term implantation of stents can cause adverse reactions such as endothelial dysfunction, blood coagulation, thrombosis in the stent, and chronic inflammation. [0003] Based on the above reasons, it has become a trend to treat intravascular stenosis by short-term stent implantation. Bioabsorbable stents made of polymer materials polylactic acid, polyethylene or polyethylene terephthalate can naturally degrade after being implanted in the body for a period of time, achieving the effect of short-term stent implantation. However, studies have shown that polymer absorbable stents need to be improved in terms of stent thickness, degradation rate, passing performance, mechanical properties, visibility, applicable popul...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the present invention provides a vascular stent removal mechanism to solve the problem that the existing vascular stent body is not easy to remove

[0006] The present invention also provides a retrievable vascular stent using the take-out mechanism to solve the problem that the existing vascular stent body is not easy to take out

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