Surgery – Truss – Pad
Patent
1985-06-14
1988-03-15
Coven, Edward M.
Surgery
Truss
Pad
128736, 73204, A61B 502
Patent
active
047306238
ABSTRACT:
Thermocouple pairs measure the temperatures at a cold-fluid injection point and a downstream point. The reference thermocouple of each pair sees the temperature of a thermally floating heat sink of unknown temperature that has high thermal conductivity and mass, and is well insulated from the environment. Consequently the heat-sink temperature drift is practically constant. To the extent that heat-sink temperature drift is significant, the invention overcomes the effects of drift to a first approximation by providing electronic circuitry that in effect registers the drift in measurement voltage before fluid injection, extrapolates this voltage drift into the measurement time period, and automatically subtracts the extrapolated voltage drift from the measurement voltages.
REFERENCES:
patent: 3561266 (1971-02-01), Auphan et al.
patent: 4016759 (1977-04-01), Baker et al.
patent: 4191194 (1980-03-01), Watanabe et al.
patent: 4217910 (1980-08-01), Khalil
patent: 4240441 (1980-12-01), Khalil
patent: 4502488 (1985-03-01), Degironimo et al.
patent: 4576182 (1986-03-01), Normann
patent: 4599895 (1986-07-01), Wiseman
Johnson et al., "A Spher. Heated Thermocouple Probe For Perfusion Measurements"; Conf.; 1978 Advances in Bioengr., 12-1978, pp. 159-162.
Coven Edward M.
Sykes Angela D.
LandOfFree
Cardiac output estimation method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cardiac output estimation method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cardiac output estimation method and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1921310