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:
Jul. 16, 2002
Filed:
Nov. 26, 1997
Donald J. Bowser, Vandergrift, PA (US);
Carl A. Cook, Monroeville, PA (US);
Louis B. Goode, Cranberry Township, PA (US);
William L. Johnson, Kittanning, PA (US);
Barry E. Norlander, Pittsburgh, PA (US);
James R. Zewe, Pittsburgh, PA (US);
Cook Vascular Incorporated, Leechburg, PA (US);
Abstract
A medical device ( ) such as a radio frequency dilator sheath for separating an encapsulated elongated structure ( ) such as an electrical cardiac lead implanted in biological tissue ( ) such as a vessel leading to or from a patient's heart. The radio frequency dilator sheath includes inner and outer coaxial dilator sheaths ( and ) with respective beveled distal ends ( and ) for mechanically loosening and separating encapsulating tissue from an implanted electric cardiac lead. The beveled distal end of the inner sheath is truncated to form a transverse face or surface ( ) that is approximately perpendicular to the longitudinal axis of the sheath. Electrical conductors ( and ) are positioned about the distal end ( ) and passage ( ) of the inner dilator sheath. When energized, the electrical conductor emits an electrical arc which electrically separates encapsulating biological tissue from the elongated electrical structure implanted therein and placed in the passage of the inner elongated dilator sheath.