A drug delivery device

Abstract

The invention discloses a drug conveying device, comprising a feeding rod, a balloon, an internal tube, a developing mark, a stress diffusion tube and a connection device, wherein a groove is arranged on the surface of the balloon, and a plurality of micropores internally communicated with the interior of the balloon are arranged in the groove. The drug conveying device can be used for directly treating stenosis in a stent or be used for conveying drug to vessels, which are subjected to balloon dilation operation or stent implantation operation. Oriented release of the drug to vascular walls can be realized without the help of any drug coating, so as to repair vascular endothelial injury and restrain hyperplasia of vascular smooth muscle cell. Furthermore, the drug conveying device can be dismounted from a human body after the operation, so as to avoid blood cohesion at vascular pathological change. Therefore, the possibility of vascular restenosis is reduced.

Description

technical field [0001] The present application relates to the technical field of medical devices, in particular to a drug delivery device. Background technique [0002] In recent years, with the aggravation of the aging population in my country and the increase in the incidence of diabetes, the prevalence of cardiovascular and cerebrovascular and peripheral blood vessels has also been increasing. In vascular diseases, arterial stenosis will directly endanger the lives of patients. [0003] Interventional surgery has become an important means of treating arterial stenosis due to its advantages of less bleeding, less trauma, fewer complications, quick postoperative recovery, safety and reliability. Interventional therapy includes balloon dilation surgery and stent implantation surgery, in which the balloon dilation surgery is to directly deliver the balloon dilation catheter to the stenosis of the blood vessel, and the narrow blood vessel is dilated by the balloon; the stent i...

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Problems solved by technology

[0004] In the process of realizing the present application, the inventors found that there are at least the following problems in the prior art: whether it is a balloon dilatation operation or a stent placement operation, some complications may be brought about, such as inflammation, vascular intima tear, Hyperplasia of vascular endothelial cells, etc., which may lead to vascular restenosis

However, delivery of certain anti-inflammatory and anti-cell proliferation drugs to diseased blood vessels by oral administration or injection has a certain effect on inhibiting vascular restenosis, but it cannot achieve directional drug delivery to diseased blood vessels, and has a greater effect on normal blood vessels. side effects

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