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. 04, 1990
Filed:
Jan. 23, 1989
Etienne Schacht, Staden, BE;
Jan Crommen, Ghent, BE;
Ethyl Corporation, Richmond, VA (US);
Abstract
A device for controlled release of one or more pharmacologically active substances within an animal which comprises (i) a body of a bioerodable solid state poly(amino acid ester) phosphazene polymer, and (ii) at least one pharmacologically active substance physically incorporated within said body. The device may comprise an implantable body in which the poly(amino acid ester)phosphazene polymer is a matrix within which such pharmacologically active substance is dispersed. Alternatively, the polymer may constitute a coating or container within which such pharmacologically active substance is physically encased--i.e., the polymer surrounds the active agent as in a capsule or in a microencapsulated form. Results of in vivo experiments using implants of poly[bis((ethyl glycino)phosphazene] containing 25% ethidium are described.