Surgery – Truss – Pad
Patent
1974-08-05
1976-05-11
Frinks, Ronald L.
Surgery
Truss
Pad
A61N 134
Patent
active
039555836
ABSTRACT:
A region to be anesthetized is connected between a pair of electrical leads. A train of like primary direct-current pulses of a polarity tending to counter nerve-generated pain signals is applied to the region by the conductors. Between these primary pulses there is applied to the region to be anesthetized direct-current secondary voltage pulses of a polarity opposite that of the primary pulses and of duration and current strength equal to only a fraction of the duration and current strength of the primary pulses. The primary and secondary pulses are both of constant current and the primary pulses have a current strength and duration equal to between 3 and 20 times the current strength and duration of the secondary pulses. A timer or clock operates a relay which serves to reverse the polarity of the voltage applied to the region to be anesthetized and to alternately connect it to either of a pair of current regulators in turn connected to a battery power supply. Circuitry is provided for monitoring direction and strength of current flow through the tooth.
REFERENCES:
patent: 2866461 (1958-12-01), Suzuki
patent: 3215139 (1965-11-01), Dietz
patent: 3563247 (1971-02-01), Bowers
patent: 3727616 (1973-04-01), Lenzkes
Smith et al., "Electronarcosis by . . . Direct & Alternating Current," Am. J. of Med. Electronics, Jan.-Mar. 65, pp. 38-41., (Copy).
Cohen Lee S.
Dubno Herbert
Frinks Ronald L.
Ross Karl F.
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