System and disposable for direct heating for infusate and...

Details System and disposable for direct heating for infusate and... System and disposable for direct heating for infusate and...

2011-01-11

2011-01-11

Lucchesi, Nicholas D (Department: 3763)

Surgery

Means for introducing or removing material from body for...

C607S105000, C607S113000

Reexamination Certificate

active

07867188

ABSTRACT:
A disposable warmer cartridge is used to heat fluids to be infused to the patient to prevent hypothermia in the patient. The cartridge has in its chamber a pair of spaced in parallel electrodes that have substantially the same dimension. When RF power is fed to the electrodes, an alternating electric field is generated between the electrodes to directly heat the fluid that is in the chamber. The heating of the fluid is achieved in a substantially instantaneous manner by controlling the energization of the electrodes through the distributed impedance of the electric field between the electrodes. Heat is readily controlled by modulating the RF power fed to the electrodes. Feedback to control the temperature of the fluid in the cartridge may be provided by non-contact and direct contact sensor(s).

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