Pressure waveform monitor

Details Pressure waveform monitor Pressure waveform monitor

1990-03-27

1992-10-13

Pellegrino, Stephen C.

Surgery

Truss

Pad

128675, H61B 502

Patent

active

051546809

ABSTRACT:
A pressure waveform monitor noninvasively monitors the pressure waveform in an underlying vessel such as an artery. The apparatus comprises at least one/continuous, relatively thin and narrow diaphragm mounted in a housing to be placed on the tissue overlying the vessel of interest. The diaphragm is longer than the diameter of the vessel for purposely monitoring pressure in the tissue adjacent the vessel of interest. The tonometer also comprises deformation sensor means for measuring deformation of the diaphragm both over the vessel and adjacent the vessel, and signal processing means for combining the waveform of the vessel as monitored by the part of the diaphragm over the vessel with the waveforms of adjacent tissue to accurately determine the actual pressure waveform in the vessel.

REFERENCES:
patent: 4269193 (1981-05-01), Eckerie
patent: 4423738 (1984-01-01), Newgard
patent: 4703758 (1987-11-01), Omura
patent: 4713540 (1987-12-01), Gilby et al.
patent: 4718426 (1988-01-01), Russell
patent: 4718427 (1988-01-01), Russell
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patent: 4869261 (1989-09-01), Penaz
patent: 4945916 (1990-08-01), Kretschmer et al.
F. T. Kurki, N. T. Smith, N. Head, H. Dec-Silver, A. Quinn "Noninvasive Continuous Blood Pressure Measurement From The Finger"; Optimal Measurement Conditions and Factors Affecting Reliability, J. Clinical Monitoring, vol. 3, No. 1, Jan. 1987, pp. 6-13.

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