Portable intravenous fluid heating system
First Claim
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1. A device for heating a flow of liquid from an initial temperature to a desired temperature for intravenous delivery, the device comprising:
- (a) an elongated metal conduit having an inlet for receiving the flow of liquid at the initial temperature and an outlet for delivering the flow of liquid at the desired temperature, said metal conduit being in direct thermal contact with the flow of liquid;
(b) at least one temperature sensing arrangement associated with said conduit and deployed to generate an output indicative of a temperature of the liquid at least one location along said conduit; and
(c) a controller associated with said temperature sensing arrangement and deployed for generating electrical current flowing within at least one length of the wall of said metal conduit, thereby generating heat within said wall so as to heat the flow of liquid to reach the desired temperature at said outlet.
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Abstract
The present invention discloses a portable intravenous fluid heating system comprising (a) a metallic heated conduit for warming IV fluids passed therethrough at a continuously regulated normal body temperature and transporting said IV fluids; and, (b) a controller unit including a power source operative to apply an electric potential across said conduit. The conduit comprises a wall made of a metallic material capable of producing resistance heat by the passage of electric current, such that said IV fluid is heated by the contact with said wall.
15 Citations
11 Claims
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1. A device for heating a flow of liquid from an initial temperature to a desired temperature for intravenous delivery, the device comprising:
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(a) an elongated metal conduit having an inlet for receiving the flow of liquid at the initial temperature and an outlet for delivering the flow of liquid at the desired temperature, said metal conduit being in direct thermal contact with the flow of liquid; (b) at least one temperature sensing arrangement associated with said conduit and deployed to generate an output indicative of a temperature of the liquid at least one location along said conduit; and (c) a controller associated with said temperature sensing arrangement and deployed for generating electrical current flowing within at least one length of the wall of said metal conduit, thereby generating heat within said wall so as to heat the flow of liquid to reach the desired temperature at said outlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A device for heating a flow of liquid from an initial temperature to a desired temperature for intravenous delivery, the device comprising:
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(a) an elongated metal conduit having an inlet for receiving the flow of liquid at the initial temperature and an outlet for delivering the flow of liquid at the desired temperature, said metal conduit comprising a metal wall that at least partially defines a liquid flow path from said inlet to said outlet, said metal wall being in direct thermal contact with said liquid flow path; (b) at least one temperature sensing arrangement associated with said conduit and deployed to generate an output indicative of a temperature of the liquid at least one location along said conduit; and (c) a controller associated with said temperature sensing arrangement and deployed for generating electrical current flowing within at least one length of said metal wall, thereby generating heat by electrical resistive heating of the metal of said flow-path-defining wall so as to heat the flow of liquid to reach the desired temperature at said outlet.
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Specification