Radio frequency surgical tool and method

Details Radio frequency surgical tool and method Radio frequency surgical tool and method

1989-12-07

1991-05-28

Cohen, Lee S.

Surgery

Instruments

Electrical application

606 49, A61B 1739

Patent

active

050190768

ABSTRACT:
A surgical tool and method of surgical treatment involving a radio frequency source (e.g., 13.0 to 28.0 MHz) creating an electromagnetic field in the vicinity of tissue to be surgically treated and a grounded, tuned, electromagnetic field focusing probe that focuses the electromagnetic field energy at the tip of the probe, thus instantaneously vaporizing, cutting and cauterizing the tissue in contact with the probe tip. Such a surgical tool is capable of creating a virtually bloodless, micro-thin incision as well as selectively coagulating body fluids (e.g., blood) and as such, is particularly useful in neuro, oncological and vascular surgery.

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Thackray et al., "Indirect Heating Source . . . ", Electrocomponent Science & Tech., vol. 1, No. 2, pp. 91-96, Dec. 1974.
W. S. Yamanashi et al., Field Focusing and Focal Heating Patterns Using Hybrid Radio Frequency Hyperthermia System, Medical Instrumentation, vol. 17, No. 5, Sep.-Oct. 1983, pp. 358-364.
Yamanashi et al., Further Observations on Tissue Heating Patterns Using an Invasive Ground Probe with Radio Frequency Hyperthermia System, Medical Instrumentation, vol. 18, No. 4, Jul.-Aug. 1984, pp. 220-223.
Yamanashi et al., Focused Hyperthermia, with a Magnetic Resonance Imaging (MRI) Unit and an Interstitial Grounded Probe, Physiological Chemistry and Physics and Medical NMR, 16(1984), pp. 491-498.

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