Surgery – Instruments – Electrical application
Reexamination Certificate
2005-09-27
2005-09-27
Cohen, Lee S. (Department: 3739)
Surgery
Instruments
Electrical application
C604S035000
Reexamination Certificate
active
06949096
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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Dahla Robert H.
Davison Terry S.
Ormsby Theodore C.
Woloszko Jean
Arthrocare Corporation
Batt Richard R.
Cohen Lee S.
Raffle John T.
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