Surgery – Truss – Pad
Patent
1995-05-18
1996-12-10
Jastrzab, Jeffrey R.
Surgery
Truss
Pad
128901, 128905, A61B 50402
Patent
active
055821812
ABSTRACT:
A device for equalizing a patient's potential with respect to medical equipment, in particular upon recording an electrocardiogram, includes at least two measuring electrodes and a reference electrode which are adapted to be applied to the patient, a drive-signal generation circuit having its output side connected to said reference electrode, a control circuit which has supplied thereto the measuring signals from said measuring electrodes and which examines whether the measuring signals lie within a predetermined range, said control circuit supplying said measuring signals to inputs of the drive-signal generation circuit, if said measuring signals lie within a predetermined range. The device according to the present invention and the method according to the present invention prevent measuring electrodes which are not adequately fixed or which do not function properly from being used for forming the drive signal which is applied to the reference electrode so that disturbances caused by the malfunctioning electrode will not be coupled into the patient and will, consequently, not have a disadvantageous influence on the measuring signals of the other electrodes either.
REFERENCES:
patent: 3602215 (1971-08-01), Parnell
patent: 3623477 (1971-11-01), Trent
patent: 4890630 (1990-01-01), Kroll et al.
patent: 5016635 (1991-05-01), Graupe
patent: 5020541 (1991-06-01), Marriott
patent: 5392784 (1995-02-01), Gudaitis
patent: 5427110 (1995-06-01), Danielsson
Hewlett--Packard Company
Jastrzab Jeffrey R.
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