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:
Feb. 06, 1990
Filed:
Jun. 10, 1988
Robert E Fischell, Silver Spring, MD (US);
Tim A Fischell, Palo Alto, CA (US);
MedInnovations, Inc., Dayton, MD (US);
Abstract
An atherectomy catheter is advanced over a guide wire in the anterograde direction to the site of an arterial stenosis. The distal end of the catheter is centered around the guide wire which has been previously advanced through the stenotic lumen. The catheter is then advanced over the guide wire with its sharpened distal end cutting through the stenosis. The atherectomy catheter can also employ rotation or vibration or an electrocautery current to enhance the catheter's cutting action. Suction applied at the catheter's proximal end is used to enhance the collection of plaque cut from the stenosis at the catheter's distal end so that the cut plaque enters a single passageway that lies between the outer surface of the guide wire and the inner surface of the cylindrical catheter.