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:
Mar. 20, 2007
Filed:
Sep. 08, 2000
Xin Qu, New York, NY (US);
Judah Z. Weinberger, Teaneck, NJ (US);
Xin Qu, New York, NY (US);
Judah Z. Weinberger, Teaneck, NJ (US);
The Trustees of Columbia University in the City of New York, New York, NY (US);
Abstract
A radioactive source is made by forming a polymer layer substantially free of inorganic polymers on a substrate material, and exposing the polymer layer to a radioactive isotope. The source is useful for inhibition of restenosis in coronary arteries after balloon angioplasty or stent implantation. In particular, a radioactive source ofP,Y, orCe is deposited on a poly(ethylene terephtalate) (PET) substrate. The polymer substrate was first coated with pH-sensitive hydrogel and then adsorbed various amount of phosphoric acid (PA) in aqueous solutions. The substrate was immersed inP,YClorCeClsolutions, and thenP,Y orCe was deposited on the surface asPPO,YPOorCe PO. Two different polyurethanes were used to encapsulate and seal the deposited isotopes on the surface to minimize the leakage of the isotope.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile