Hyperthermia heating apparatus

Details Hyperthermia heating apparatus Hyperthermia heating apparatus

1980-05-13

1982-08-31

Cohen, Lee S.

Surgery

Truss

Pad

128784, 128804, A61N 132

Patent

active

043467156

ABSTRACT:
The present invention is an improved array of electrodes for use in delivering electromagnetic energy to a localized area of a patient's body in a hyperthermic treatment so that it provides a uniform distribution of electromagnetic flux lines within the localized area of the patient's body in order to produce a uniform and localized heating gradient. The improved array of electrodes includes a plurality of electrodes which are arranged in pair, with the electrodes in each pair being spaced a particular distance apart. The improved array of electrodes are driven by a balanced line system which is electromagnetically coupled to each pair of electrodes and which is shielded by a ground coaxial shield which itself is ground to the body of the patient. Each electrode is embedded in a Teflon stand-off in order to move the region of strong field, from the body, produced by rapidly changing potentials. The two pairs of electrodes forming a cross like geometry are used with the balanced line systems. The electrical power is either multiplexed among the electrodes or the second pair is driven by a potential which is sinusoidal and which is 90.degree. out of phase with the first balanced line system which is also sinusoidal.

REFERENCES:
patent: 3096768 (1963-07-01), Griffith, Jr.
patent: 3543761 (1970-12-01), Bradley
patent: 3895639 (1975-07-01), Rodler
patent: 3991770 (1976-11-01), LeVeen
patent: 4016886 (1977-04-01), Doss et al.
patent: 4095602 (1978-06-01), LeVeen
patent: 4108147 (1978-08-01), Kantor

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