A titanium alloy drug-releasing vascular stent

Abstract

The invention discloses a titanium alloy drug release vascular stent, and relates to the field of vascular stents. The titanium alloy drug release vascular stent comprises a stent body, wherein the stent body is composed of a stent outer membrane and a stent inner membrane, the stent outer membrane and the stent inner membrane are made of a titanium alloy material and are of hollowed-out structures, the portion between the stent outer membrane and the stent inner membrane is filled with a soft body, and the outer surfaces of the left and right sides of the stent outer membrane are fixedly connected with outer protrusions. The titanium alloy drug release vascular stent has the advantages that an inner container is inflated to achieve the flexible expansion of the outer protrusions to bloodvessels, the expansion range is very wide, the adjustment is very convenient, the adjustment can be carried out according to the own situation of a patient, after the expansion is completed, inner protrusions are squeezed through the inner container, thereby squeezing medicine balls, so that drugs in the medicine balls are squeezed into the blood vessels, thereby achieving the drug therapy of theblood vessels, and the vascular stent not only can keep the blood flow of the lumens of the blood vessels smooth, but also can prevent restenosis of the blood vessels, and the practicability is high.

Description

technical field [0001] The invention relates to the field of vascular stents, in particular to a titanium alloy drug-releasing vascular stent. Background technique [0002] Vascular stents refer to the placement of internal stents in the diseased segment to support the stenotic and occluded segment of blood vessels, reduce the elastic retraction and reshaping of blood vessels, and maintain smooth blood flow in the lumen. Some internal stents also have the effect of preventing restenosis. [0003] Chinese patent (publication number: CN107736958A) discloses a titanium alloy drug-releasing vascular stent, which includes a body between blood vessels and an intima. The body of the stent is made of titanium alloy and has a hollow tubular structure with a reticular wall. structure, the stent body is set outside the intima, and the intima includes a base layer and a drug-loaded layer. On the one hand, the intima prevents the formation of early thrombus; The patency of the blood ves...

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Problems solved by technology

[0003] Chinese patent (publication number: CN107736958A) discloses a titanium alloy drug-releasing vascular stent, which includes a body between blood vessels and an intima. The body of the stent is made of titanium alloy and has a hollow tubular structure with a reticular wall. structure, the stent body is set outside the intima, and the intima includes a base layer and a drug-loaded layer. On the one hand, the intima prevents the formation of early thrombus; The patency of the blood vessel after the stent is inserted. In addition, the stent body is made of titanium alloy material to avoid adverse reactions caused by nickel to the human body and improve clinical safety. However, the vascular stent cannot adjust the support range of the stent body, and the degree of support is limited. , has certain limitations and poor practicability

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