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:
May. 20, 2008
Filed:
Aug. 29, 2001
Thomas V Ressemann, St. Cloud, MN (US);
Steven S Hackett, Maple Grove, MN (US);
Andrew J Dusbabek, Dayton, MN (US);
Scott a Olson, Zimmerman, MN (US);
Peter T Keith, St. Paul, MN (US);
Dennis W Wahr, Minnetonka, MN (US);
Thomas V Ressemann, St. Cloud, MN (US);
Steven S Hackett, Maple Grove, MN (US);
Andrew J Dusbabek, Dayton, MN (US);
Scott A Olson, Zimmerman, MN (US);
Peter T Keith, St. Paul, MN (US);
Dennis W Wahr, Minnetonka, MN (US);
St. Jude Medical, Cardiology Division, Inc., Maple Grove, MN (US);
Abstract
An evacuation sheath assembly and method of treating occluded vessels which reduces the risk of distal embolization during vascular interventions is provided. The evacuation sheath assembly includes an elongated tube defining an evacuation lumen having proximal and distal ends. A proximal sealing surface is provided on a proximal portion of the tube and is configured to form a seal with a lumen of a guided catheter. A distal sealing surface is provided on a distal portion of the tube and is configured to form a seal with a blood vessel. Obturator assemblies and infusion catheter assemblies are provided to be used with the evacuation sheath assembly. A method of treatment of a blood vessel using the evacuation sheath assembly includes advancing the evacuation sheath assembly into the blood vessel through a guide catheter. Normal antegrade blood flow in the blood vessel proximate to the stenosis is stopped and the stenosis is treated. Retrograde blood flow is induced within the blood vessel to carry embolic material dislodged during treating into the evacuation sheath assembly. If necessary to increase retrograde flow, the coronary sinus may be at least partially occluded. Alternatively, antegrade flow may be permitted while flow is occluded at the treatment site.