Ultrasonically enhanced RF ablation catheter
Patent 4936281 Issued on June 26, 1990. Estimated Expiration Date: 
April 13, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 13, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesProstate resectoscope having ultrasonic scanning Electro cautery surgical blade Electrosurgical catheter and method for vascular applications Endoscopic ultrasonic aspirators Electro-surgical instrument Intravascular ultrasonic catheter/probe and method for treating intravascular blockage Patent #: 4870953 InventorAssigneeApplicationNo. 337427 filed on 04/13/1989US Classes:600/439, With therapeutic device604/22, With means for cutting, scarifying, or vibrating (e.g., ultrasonic, etc.) tissue606/48, Bipolar electrodes606/50Bipolar electrodesExaminersPrimary: Cohen, Lee S.Attorney, Agent or FirmInternational ClassesA61B 008/00A61B 017/39 AbstractAn electrosurgical angioplasty catheter with ultrasonic enhancement is described. It comprises an elongated, flexible plastic tubular body having located at its distal tip an electrode structure for effecting rf cutting along with a transducer for ultrasonically driving the rf cutting electrodes and the support thereof. The electronics module for driving the cutting electrodes and the ultrasonic transducer also includes means for receiving echo signals picked up by the transducer whereby Doppler flow readings and ultrasound imaging of the blood vessel being worked upon can be obtained. | |
