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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11925728 B1

PDFFull Text
Date of Patent:
Mar. 12, 2024

Filed:

Jan. 09, 2018

Degradable vascular stent capable of avoiding late restenosis

Applicant:

Shanghai Weite Biotecnnology Co., Ltd, Shanghai, CN;

Inventors:

Zheng Wei, Shanghai, CN;

Bin Huang, Shanghai, CN;

Jian Xie, Shanghai, CN;

Yunhong Mu, Shanghai, CN;

Assignee:

Shandong Huaan Biotechnology Co., Ltd., Jinan, CN;

Attorney:

Boyle Fredrickson, S.C.

Primary Examiner:

Matthew J Lawson

Assistant Examiner:

Rebecca Lynee Zimmerman

Int. Cl.
CPC ...
A61F 2/06 (2013.01); A61F 2/90 (2013.01); A61L 27/18 (2006.01); A61L 27/26 (2006.01); A61L 27/54 (2006.01); A61L 27/58 (2006.01);
U.S. Cl.
CPC ...
A61L 27/54 (2013.01); A61F 2/06 (2013.01); A61F 2/90 (2013.01); A61L 27/18 (2013.01); A61L 27/26 (2013.01); A61L 27/58 (2013.01); A61F 2210/0004 (2013.01); A61F 2250/0068 (2013.01); A61L 2300/41 (2013.01); A61L 2300/412 (2013.01); A61L 2300/42 (2013.01);
Abstract

The present invention relates to a degradable vascular stent capable of avoiding late restenosis, comprising a base region formed by a polylactic acid based polymer; at least one storage region in which an active agent is stored; and an outer layer of a drug sustained release coating covered on the base region and/or the storage region. Before the mass of the polylactic acid based polymer is decreased by 10-20%, the active agent is retained in structural units of the polylactic acid based polymer. After the mass of the polylactic acid based polymer is decreased by 10-20%, the active agent is released from the storage region. The base region provides a supporting capacity for ensuring patency of blood vessels; the drug sustained release coating is used for drug release in an early stage; and the active agent only works in late degradation of the stent to avoid late restenosis.

Find Patent Forward Citations

Wei, Zheng. (2024). Degradable vascular stent capable of avoiding late restenosis (U.S. Patent No. 11925728). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11925728

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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