Electrosurgical ablation and aspiration apparatus having flow directing feature and methods related thereto
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United States of America Patent
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Sep 27, 2005
Grant Date -
May 22, 2003
app pub date -
Jan 21, 2003
filing date -
Jan 21, 1998
priority date (Note) -
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Abstract
Electrosurgical methods, systems, and apparatus for the controlled ablation of tissue from a target site of a patient. An electrosurgical apparatus of the invention includes an active electrode assembly having an active electrode screen surrounded by a plurality of flow protectors. Each flow protector defines a shielded region of the active electrode screen, each shielded region of the screen characterized by enhanced plasma formation. The active electrode assembly is adapted for removing tissue from a surgical site, and the active electrode screen is adapted for digesting fragments of resected tissue. In one embodiment, the apparatus is particularly suited to simultaneously removing both hard and soft tissue in, or around, a joint.
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