초록 ▼

The invention is directed to an electrosurgical device having a shapeable elongate cutting electrode having a free distal end with an exposed length of at least about 0.25 inch and secured by its proximal end to the distal end of a handle. The electrosurgical device is designed for use with a high f

The invention is directed to an electrosurgical device having a shapeable elongate cutting electrode having a free distal end with an exposed length of at least about 0.25 inch and secured by its proximal end to the distal end of a handle. The electrosurgical device is designed for use with a high frequency electrosurgical generator which has an output at a frequence of between about 1 MHz and about 10 MHz, preferably about 3 to about 8 MHz. Preferably, the output has an essentially sinusoidal waveform with little harmonic distortion. The methods provide for the enhanced cutting of a variety of tissue including muscular, connective, glandular and fatty tissue. The device is particularly suitable in performing a breast biopsy.

대표청구항 ▼

The invention is directed to an electrosurgical device having a shapeable elongate cutting electrode having a free distal end with an exposed length of at least about 0.25 inch and secured by its proximal end to the distal end of a handle. The electrosurgical device is designed for use with a high f

The invention is directed to an electrosurgical device having a shapeable elongate cutting electrode having a free distal end with an exposed length of at least about 0.25 inch and secured by its proximal end to the distal end of a handle. The electrosurgical device is designed for use with a high frequency electrosurgical generator which has an output at a frequence of between about 1 MHz and about 10 MHz, preferably about 3 to about 8 MHz. Preferably, the output has an essentially sinusoidal waveform with little harmonic distortion. The methods provide for the enhanced cutting of a variety of tissue including muscular, connective, glandular and fatty tissue. The device is particularly suitable in performing a breast biopsy. ). General Kinetic Model of Oil Shale Pyrolysis, Alan K. Burnham & Robert L. Braun, Dec. 1984 (25 pages). General Model of Oil Shale Pyrolysis, Alan K. Burnham & Robert L. Braun, Nov. 1983 (22 pages). Pyrolysis Kinetics for Green River Oil Shale From the Saline Zone, Burnham et al., Feb., 1982 (33 pages). Reaction Kinetics Between CO2and Oil Shale Char, A.K. Burnham, Mar. 22, 1978 (9 pages from & back). Reaction Kinetics Between CO2and Oil Shale Residual Carbon. I. Effect of Heating Rate on Reactivity, Alan K. Burnham, Jul. 11, 1978 (11 pages front and back). High-Pressure Pyrolysis of Colorado Oil Shale, Alan K. Burnham & Mary F. Singleton, Oct. 1982 (23 pages). A Possible Mechanism Of Alkene/Alkane Production in Oil Shale Retorting, A.K. Burnham, R.L. Ward, Nov. 2, 1980 (20 pages). Enthalpy Relations For Eastern Oil Shale, David W. Camp, Nov. 1987 (13 pages). Oil Shale Retorting: Part 3 A Correlation of Shale Oil 1-Alkene/n-Alkane Ratios With Yield, Coburn et al., Aug. 1, 1977 (18 pages). The Composition of Green River Shale Oil, Glen L. Cook, et al., 1968 (12 pages). On-line, Mass Spectrometric Determination of Ammonia From Oil Shale Pyrolysis Using Isobutane Chemical Ionization, Crawford et al., Mar. 1988 (16 pages). Thermal Degradation of Green River Kerogen at 150° to 350° C Rate of Production Formation, J.J. Cummins & W.E. Robinson, 1972 (18 pages). Retorting of Green River Oil Shale Under High-pressure Hydrogen Atmospheres, LaRue et al., Jun. 1977 (38 pages). Retorting and Combustion Processes In Surface Oil-Shale Retorts, A.E. Lewis & R.L. Braun, May 2, 1980 (12 pages). Oil Shale Retorting Processes: A Technical Overview, Lewis et al., Mar. 1984 (18 pages). Study of Gas Evolution During Oil Shale Pyrolysis by TQMS, Oh et al., Feb. 1988 (10 pages). The Permittivity and Electrical Conductivity of Oil Shale, A.J. Piwinskii & A. Duba, Apr. 28, 1975 (12 pages). Oil Degradation During Oil Shale Retorting, J.H. Ral