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:
Mar. 01, 2011
Filed:
Sep. 10, 2007
Steven G. Arless, Beaconsfield, CA;
Fredric L. Milder, Brookline, MA (US);
Marwan Abboud, Pierrefonds, CA;
Dan Wittenberger, Pierrefonds, CA;
Sean Carroll, Beaconsfield, CA;
Steven G. Arless, Beaconsfield, CA;
Fredric L. Milder, Brookline, MA (US);
Marwan Abboud, Pierrefonds, CA;
Dan Wittenberger, Pierrefonds, CA;
Sean Carroll, Beaconsfield, CA;
Medtronic Cryocath LP, Toronto, Ontario, CA;
Abstract
A catheter includes a cryoablation tip with an ablation assembly for heating tissue. The cryoablation tip may be implemented with a cooling chamber and have an RF electrode at its distal end. The electrode may be operated to warm cryogenically-cooled tissue, or the coolant may be controlled in combination with an RF treatment regimen to enhance the lesion size, speed or placement of multi-lesion or single lesion cycles. In one embodiment a microwave energy source operates to extend beyond the thermal conduction depth, or penetrate the ice ball and be absorbed in tissue beyond an ice boundary, thus extending a dimension of treatment. Also, the cooling and application of RF energy can be controlled to position the ablation region away from the surface contacted by the electrode thereby leaving surface tissue unharmed while ablating at depth or to provide an ablation band of greater uniformity with increasing depth.