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. 28, 1999
Filed:
Aug. 12, 1998
Charles R Slater, Fort Lauderdale, FL (US);
Scott L Jahrmarkt, Miami Beach, FL (US);
Scott T Smith, Miami, FL (US);
CNS Technology, Inc., Davie, FL (US);
Abstract
Radioactive therapeutic seeds include a two part seed capsule, a radioactive isotope, and, preferably, a radiopaque marker. According to the invention, the seed capsule has an outer part, and an inner part which fits into the outer part and which carries the radioactive isotope. The capsule is sealed by welding the end(s) of the inner part to the end(s) of the outer part. According to one embodiment, the outer part of the seed capsule is a cylinder with one open end and one closed end. The inner part of the seed capsule has a reduced diameter portion which carries the isotope and a larger diameter portion which mates with the open end of the cylinder. According to another embodiment, the outer part of the seed capsule is a cylinder with two open ends. The inner part has a reduced diameter portion which carries the isotope and two larger diameter portions which mate with the open ends of the cylinder. According to some embodiments of the invention, the isotope is carried on a radiopaque structure which is mounted on the reduced diameter portion of the inner part of the seed capsule. According to another embodiment, the inner part of the seed capsule is a hollow member. According to another embodiment, the inner part of the seed capsule is made of radiopaque material.