A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 5/028 (2006.01) A61B 5/027 (2006.01) A61F 7/12 (2006.01) G05D 23/00 (2006.01)
Patent
CA 2404534
A system for keeping the surface temperature of an electric resistance-type heater element in a thermodilution catheter within safe physiological limits includes, in the preferred embodiment, a heater element core temperature monitor, a monitor for monitoring the power that is supplied to the heater element, and a surface temperature calculator for calculating the surface tem- perature of the heater element based on the core temperature, supplied power, and information representing the characteristics of the particular catheter under anticipated clinical conditions. A second aspect of the invention involves a system for determining the supply of power to the heater element based on the core temperature of the heater element. A third aspect of the invention in- volves a system readiness test for determining, in vivo, that the thermodilution catheter system is properly calibrated before the system is operational. Methods of operation for each of the above-referenced aspects of the invention are also disclosed.
Mckown Russell C.
Quinn Michael D.
Yelderman Mark L.
Edwards Lifesciences Corporation
Sim & Mcburney
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