Surgery – Truss – Pad
Patent
1996-07-31
1998-02-03
Kamm, William E.
Surgery
Truss
Pad
128902, A61B 504
Patent
active
057133654
ABSTRACT:
An instrument for detecting an electric biological signal, and wherein a pocket casing housing an electronic circuit presents a rectangular wall fitted with two flat electrodes and a display. The electronic circuit includes an amplifier stage wherein a first operational amplifier communicates at the input with a first electric line receiving a first electric signal picked up from a first portion of the human body, and a second operational amplifier communicates at the input with a second electric line receiving a second electric signal picked up from a second portion of the human body. An inverting amplifier receives a signal equal to the average of the output signals of the first and second operational amplifiers, and is connected at the output to a signal divider for supplying the signal at the output of the inverting amplifier to the first and second electric lines. The user of the instrument grips the casing and places the left and right thumbs on the electrodes to establish electrical connection between the body of the user and the electronic circuit. (FIGS. 1 and 3)
REFERENCES:
patent: 4191195 (1980-03-01), Miller
patent: 4596256 (1986-06-01), Ascher et al.
patent: 5002062 (1991-03-01), Suzuki
patent: 5392784 (1995-02-01), Gudaitis
Getzow Scott
Kamm William E.
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