Ablation apparatus for cardiac chambers
Patent 5769846 Issued on June 23, 1998. Estimated Expiration Date: 
June 23, 2015. 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.
June 23, 2015. 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 References 1620929 1827306 3645265 3840016 3924628 Uterine cannula Device for sterilization by transuterine tube coagulation Device for hyperthermia Method and apparatus for angioplasty Hyperthermia applicator InventorsAssigneeApplicationNo. 426614 filed on 04/21/1995US Classes:606/41, Applicators602/22, Finger606/28, Tip or other heat concentration means606/194, Inserted in vascular system607/101Microwave or RF (high frequency)ExaminersPrimary: Peffley, MichaelAttorney, Agent or FirmInternational ClassA61B 017/36AbstractAn endocardial ablation apparatus, for introduction into a heart chamber formed by a wall, is provides. The ablation apparatus includes an inflatable, flexible porous membrane adapted to receive an electrolytic solution, and become inflated to substantially conform an exterior surface of the membrane to the wall of the heart chamber. An inner lumenal member is surrounded by and attached to the membrane. The inner lumenal member includes a lumen that permits blood flow through the inner lumenal member and heart chamber. An introducer catheter introduces the membrane and inner lumenal member into a selected heart chamber. A plurality of RF electrodes define a circuit positioned in the membrane or on an exterior surface of the inner lumenal member. The RF electrodes transfer thermal energy to the electrolytic solution. The electrolytic solution is the electrode that provides ablation of a selected site of the heart chamber. An RF power source is coupled to the RF electrodes. A source of electrolytic solution is coupled to the membrane.Other References
Field of SearchWith thermal control meansSelf-contained powersupply Heat application Tip in electrical circuit Tip or other heat concentration means Electrical application Systems Electromagnetic wave irradiation Applicators With switching or power control With formable electrode Bipolar electrodes Cutting Endoscopic Bipolar electrodes coagulation Internal pressure applicator (e.g., dilator) Inflatable or expandible by fluid Inserted in female reproductive system Inserted in vascular system Electric current With temperature sensing Localized application Electromagnetic radiation (e.g., infrared) Microwave or RF (high frequency) With tubular injection means inserted into body With means for cutting, scarifying, or vibrating (e.g., ultrasonic, etc.) tissue | |
