Surgery – Truss – Pad
Patent
1988-02-29
1990-09-04
Sykes, Angela D.
Surgery
Truss
Pad
128693, 128713, 128734, 128642, A61B 5205
Patent
active
049535560
ABSTRACT:
Apparatus for measuring cardiac and/or pulmonary activity, comprising an electrical oscillator, a pair of electrodes for applying the oscillating electrical signal to the thorax of a patient, an oesophageal probe including an oesophageal electrode, a sensing electrode adapted to be positioned on the chest of the patient in the region of the apex of the heart, whereby measurement of voltage between the said first and second electrodes provides a measure of cardiac volumes, a third electrode adapted to be positioned on the chest of the patient at a position on the right side of the chest generally corresponding with that of the second electrode of the left side of the chest, whereby measurement of voltage between the said first and third electrodes provides a measure of volume of the right lung of the patient, a device for measuring the voltage induced between the first and second, and the first and third electrodes respectively, and for thereby providing first and second output signals respectively, indicative of cardiac and pulmonary activity respectively.
REFERENCES:
patent: 4198963 (1980-04-01), Barkalow et al.
patent: 4450527 (1984-05-01), Sramek
patent: 4836214 (1989-06-01), Sramek
patent: 4852580 (1989-08-01), Wood
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