Hot and cold fluid therapy system

Details Hot and cold fluid therapy system Hot and cold fluid therapy system

2004-12-06

2010-11-09

Gibson, Roy D (Department: 3739)

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Thermal applicators

C607S096000, C607S108000

Reexamination Certificate

active

07828831

ABSTRACT:
A temperature controlled fluid therapy system includes a reservoir for containing hot or cold fluid, a pump with a submersible motor disposed within the reservoir, a watertight blanket for containing the hot or cold fluid, and output and intake conduits for circulating the fluid between the reservoir and the blanket. The system includes a first temperature sensor disposed within the reservoir for measuring the temperature of the fluid in the reservoir, and a second temperature sensor disposed adjacent the blanket for measuring the temperature of the fluid in the blanket. A power supply provides power to the pump motor. A controller controls the power provided to the motor based upon the first and second temperature signals, thereby controlling the fluid flow rate through the blanket and hence the temperature of the fluid in the blanket. When the temperature of the fluid in the reservoir is within a hot temperature range, such as 90° F. to 120° F., the controller maintains the temperature of the fluid in the blanket within the hot temperature range. When the temperature of the fluid in the reservoir is within a cold temperature range, such as 45° F. to 65° F., the controller maintains the temperature of the fluid in the blanket within the cold temperature range.

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T-300 Motorized Cold Therapy Unit Author: unknown date of publication: unknown The T-300 is a soft bag cold therapy device utilizing a pump to circulate cold water through an applicator. The T-300 used a thermistor as the fluid temperature sensor which was located in the outlet conduit of the bag. The unit also used a thermistor sensor at the fluid return line just prior to the fluid's entry into the fluid reservoir from the applicator to monitor the temperature of the returned fluid to control the fluid flow rate and thus the temperature of the fluid at the applicator. The first date of sale was Dec. 1, 1999.

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