Surgery – Truss – Pad
Patent
1995-04-13
1998-01-27
Hindenburg, Max
Surgery
Truss
Pad
A61B 504
Patent
active
057113076
ABSTRACT:
An apparatus for detecting myoelectric activity from the surface of the skin has an electrode pair, processing circuitry, and up to three output leads. The signals detected at the electrode contacts are differentiated, amplified, and then filtered. The filtered signals are provided as a first input signal to a switch and a ground signal is provided as a second input signal to the switch. The amplified, unfiltered signals are tested against a preset threshold. If the signals exceed the threshold, the signals are considered to have significant amounts of noise. In this case, a comparator causes the switch to provide the ground signal as the output signal. Otherwise, the switch provides the filtered signals as the output signal. One output line provides the amplified, unfiltered signals for testing and analysis. The apparatus can be used as part of a prosthetic device, or can be used for testing with a plurality of electrode pairs.
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Hindenburg Max
Liberty Mutual Insurance Company
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