Apparatus for measuring impedance of body tissue

Details Apparatus for measuring impedance of body tissue Apparatus for measuring impedance of body tissue

1987-06-15

1989-02-21

Jaworski, Francis

Surgery

Truss

Pad

128734, A61N 100, H05G 0000

Patent

active

048056219

ABSTRACT:
An apparatus for measuring the impedance of body tissue has a signal source connected to the tissue to be measured which supplies an electrical signal to the tissue, a unit for acquiring an impedance signal from the body tissue dependent on the electrical signal, and an evaluation stage for the impedance signal. The evaluation stage filters out low frequency signal components corresponding to the conductance of the tissue, and has a signal output to which the signal components which were filtered out are supplied.

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"Methods of filtering the heart-beat artefact from the breathing waveform of infants by impedance pneumography", Wilson et al, Medical & Biological Engineering & Computing, vol. 20, No. 3, May 1982, pp. 293-298.

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