A kind of drug delivery catheter and preparation method thereof

A technology for delivering catheters and drugs, applied in the field of medical devices, can solve the problems that anti-proliferative drugs cannot act on blood vessels, cannot effectively inhibit intimal hyperplasia for a long time, and the firmness of drug coatings is not good enough, so as to improve the long-term patency rate of blood vessels , Improve drug release, improve inhibitory effect
CN113018649BActive Publication Date: 2022-07-15ACOTEC SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ACOTEC SCI
Publication Date
2022-07-15

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Abstract

The present invention provides a drug delivery catheter with a novel structure, comprising a balloon assembly and a protection assembly nested on the balloon assembly; the balloon assembly includes a balloon handle, an outer tube and a balloon connected in sequence, so that the The balloon assembly is provided with an inner tube, the outer tube is provided with a position indication mark, the distal end of the inner tube is fixedly connected with a tip, and the tip is a hollow structure; the outer surface of the balloon is coated with A drug microcapsule, the drug microcapsule is composed of a bioabsorbable surface coating material and a content drug, the content drug includes an anti-proliferative drug, an inflammation-suppressing drug, an excipient and a stabilizer; the protection component includes sequentially connected Protecting the handle and protecting the tube body; the invention transports the drug microcapsules to the target blood vessel through the balloon, significantly improves the drug delivery efficiency and utilization rate, and can release the drug to the target lesion for a long time, thereby maintaining the smooth blood vessel for a long time.
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Description

technical field

[0001] The invention relates to the technical field of medical devices, in particular to a drug delivery catheter with a novel structure and a preparation method thereof. Background technique

[0002] Arterial disease of the lower extremities caused by atherosclerosis is an important part of the current global disease causing death and disability. There are an estimated 16-24 million patients with lower extremity arterial disease in the United States, and about 100,000 people need surgical treatment each year. The prevalence of lower extremity arterial disease is basically the same as that of coronary heart disease. With the increase of age, the incidence of lower extremity arterial disease will increase significantly, the incidence rate of 45 to 54 years old is 0.6%, the incidence rate of 55 to 64 years old is 2.5%, and the incidence rate of 65 to 74 years old is 8.8%. Lower extremity arterial disease seriously impairs the function of the affected extremity...

Claims

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