Fluid-Assisted Medical Devices, Fluid Delivery Systems and Controllers for Such Devices, and Methods

a technology of medical devices and fluids, applied in the field of electrosurgical devices, methods and systems for use upon human body tissues during surgery, can solve the problems of unintended thermal damage to tissue, tissue desiccation, tissue sticking to electrodes, etc., and achieve the effects of improving tissue coagulation speed, fast, effective manner, and treating tissue quickly
US20070049920A1Inactive Publication Date: 2007-03-01MEDTRONIC ADVANCED ENERGY
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
MEDTRONIC ADVANCED ENERGY
Publication Date
2007-03-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

Medical devices, methods and systems for treating tissue are provided. An exemplary system comprises a fluid from a fluid source, a surgical device which provides energy and the fluid to the tissue and a control mechanism which changes a flow rate of fluid provided from the surgical device and changes a rate of energy provided from the surgical device. The fluid flow rate changes between at least two non-zero flow rates and the energy rate changes between at least two non-zero energy rates. An exemplary method comprises providing a fluid from a fluid source, providing a surgical device which provides energy and the fluid to the tissue, and changing a flow rate of fluid provided from the surgical device with a change in a rate of energy provided from the surgical device. Exemplary devices comprise a tip portion configured to provide energy and a fluid to a tissue.
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Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This patent application is a continuation of U.S. Ser. No. 09 / 947,658 filed Sep. 5, 2001, now U.S. Pat. No. ______, which is a continuation-in-part of U.S. Ser. No. 09 / 797,049, filed Mar. 1, 2001, now pending, the entire disclosure of which is incorporated by reference, which claims priority to U.S. Ser. No. 60 / 187,114, filed Mar. 6, 2000, the entire disclosure of which is incorporated herein by reference.FIELD OF THE INVENTION

[0002] This invention relates generally to the field of medical devices, methods and systems for use upon a body during surgery. More particularly, the invention relates to electrosurgical devices, methods and systems for use upon tissues of a human body during surgery. BACKGROUND

[0003] Electrosurgical devices use electrical energy, most commonly radio frequency (RF) energy, to cut tissue or to cauterize blood vessels. During use, a voltage gradient is created at the tip of the device, thereby inducing current f...

Claims

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