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.:
Date of Patent:
Dec. 16, 1997
Filed:
Jun. 07, 1995
Young Ha Kim, Seoul, KR;
Ki Dong Park, Seoul, KR;
Dong Keun Han, Seoul, KR;
Hack Joo Kim, Seoul, KR;
Korea Institute of Science and Technology, Seoul, KR;
Abstract
The specification describes an invention of calcification resistant bioprosthetic heart valves which can be used for a long term, and have good blood compatibility and in vivo stability, and have high calcification resistance. The bioprosthetic heart valves of the invention can be prepared by binding sulfonated polyethylene oxide (PEO) derivatives covalently to the tissue. The valves have an anionic effect equal to that of chondroitin sulfate, space filling effect, and blocking effect of the carboxyl group of collagen which has been known as one factor of the calcium deposition,. In particular, the present method has better advantages in view of calcification resistance than any other conventional methods, because it suppresses thrombosis and embolism and decreases incidence of infection.