Test and control device for electrosurgical apparatus

Details Test and control device for electrosurgical apparatus Test and control device for electrosurgical apparatus

1973-10-23

1976-01-20

Michell, Robert W.

Surgery

Truss

Pad

128423, 317 18D, 317 31, A61B 1736, A61N 300

Patent

active

039331571

ABSTRACT:
An electrosurgical apparatus having a diathermy current generator connected to an active electrode and a two-segment inactive electrode in surface engagement with the patient includes a test and control device automatically sensing the sum of the contact impedances of the two inactive electrode segments and inhibiting the passage of the diathermy current through the patient if the sensed impedance value is too high or too low. The sensing of the contact impedances is effected at intervals during periods when no diathermy current flows and is accomplished by means of alternating current.

REFERENCES:
patent: 3303387 (1967-02-01), Springer
patent: 3628094 (1971-12-01), Billin
patent: 3683923 (1972-08-01), Anderson
patent: 3723813 (1973-03-01), Allen
patent: 3774106 (1973-11-01), MacPhee
patent: 3783340 (1974-01-01), Becker

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