Patent ID: 6336003
Filing Date: 2002-01-01
Classification: A61M

Abstract:
A heating device for instillation comprising a casing having hanging means at one end thereof for vertically supporting the casing during use of the device, said casing including a circuit element receiving chamber and a heater receiving chamber having a front opening for securing the Disposable Cellular Pouch, a lid for at least covering said front opening of the heater receiving chamber, a heater situated in said heater receiving chamber, said heater including a heater segment coextensive with, disposed in and filling said front opening and an electric heating element attached to a backside and front side of the heater segment for heating the segment, said heater segment having U-shaped channels on a front and backside thereof for receiving a Disposable Cellular Pouch therein a liquid through which an instillation liquid to be heated flows, said lid being arranged to cover said U-shaped channels and feed pipe received therein when in closed position, said groove having left and right curves and extending from an upper portion of the heater segment to a lower portion thereof to keep the instillation liquid in the liquid feed of the disposable Cellular Pouch between left and right curves for a period sufficient to heat the liquid, and electric circuit means situated in said circuit element receiving chamber, said electric circuit means including first and second temperature control thermistors, the first thermistor sensing temperature of the instillation liquid after passing through the length of the heater segment groove for operating said circuit means to intermittently energize the heating element to heat to instillation liquid flowing through the disposable tubular holder/channels to a predetermined temperature, the second thermistor being provided at the electric heating element for operating said circuit means to turn off the electric circuit means when the electrical heating element is heated beyond a predetermined temperature due to excess flow of the instillation liquid to thereby override the control of the heating element by the first thermistor such that instillation fluid flow is not halted and will continue to flow without the heating, wherein the electric circuit means further comprises a programmable control unit, adapted to shut down the heating device after it has been in use for a predetermined period and to provide alarm while approaching the predetermined period.