Surgery – Instruments – Electrical application
Reexamination Certificate
2006-08-22
2006-08-22
Peffley, Michael (Department: 3739)
Surgery
Instruments
Electrical application
C606S034000, C606S039000, C606S040000
Reexamination Certificate
active
07094231
ABSTRACT:
An electrosurgical instrument that is capable of generating high-quality RF energy at a single frequency in the MHz range best suited for delicate, precise and quick-healing cutting procedures with low leakage currents using a monopolar handpiece, and also provides high-quality RF energy at the same frequency suited for use for carrying out similar procedures for use with a bipolar handpiece. In a preferred embodiment, the instrument is capable of generating sub-modes of electrosurgical currents with different waveforms optimized for cutting and hemostasis, and the various sub-modes are available for both the monopolar and bipolar handpieces. A preferred operating frequency is in the range of 4 MHz. The instrument includes means for maintaining a substantially constant power output irrespective of selection of one of the sub-modes.
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patent: 4171700 (1979-10-01), Farin
patent: 5562503 (1996-10-01), Ellman et al.
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patent: 6830569 (2004-12-01), Thompson et al.
patent: 6994707 (2006-02-01), Ellman et al.
patent: 2004/0054365 (2004-03-01), Goble
Ellman Alan G.
Garito Jon C.
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