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:
Oct. 01, 2002
Filed:
Nov. 24, 2000
Csaba Truckai, Saratoga, CA (US);
John H. Shadduck, Tiburon, CA (US);
Bruno Strul, Portola Valley, CA (US);
Other;
Abstract
A system for occlusion of aneurysms comprising a class of polymer embolic elements that carry a conductive material to provide the element with a specified resistivity. The embolic element is introduced into a targeted vascular malformation from a catheter sleeve that carries an electrode arrangement at its distal terminus. After introducing any selected length of the embolic element into the vascular malformation to mechanically occlude the malformation, the physician delivers electrical current within a first selected power range to the electrode at the catheter terminus. The electrical current flows to the embolic element wherein the specified resistivity of the element controllably causes a selected thickness of coagulum to form about the surface of the embolic element to more fully occupy the volume of the malformation with occlusive material. A controller and feedback circuitry allow the embolic element to be maintained at a selected temperature to insure even build-up of the desired coagulative layer about the electrode, without risk of creating hot-spots within the aneurysm. Thereafter, the physician delivers electrical current at second higher power level to electrode arrangement to cause the embolic element to act as a fuse at the catheter terminus to divide any selected length of deployed embolic element from the remainder of the embolic element still within the catheter sleeve.