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A composite flexible delivery hose 1 for use with a medical humidifier comprises an inner tubular member 2 around which is spirally wound a heater cable 4. The heater cable 4 includes an outer body 6 of electrically insulating material in which is embedded an electrical resistance heater wire 8, a w

A composite flexible delivery hose 1 for use with a medical humidifier comprises an inner tubular member 2 around which is spirally wound a heater cable 4. The heater cable 4 includes an outer body 6 of electrically insulating material in which is embedded an electrical resistance heater wire 8, a wire 10 interconnecting temperature sensors arranged one at each end of the hose and a thermoplastic support wire 12.

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A composite, flexible delivery hose for use with a medical humidifier and having temperature sensors arranged one at each end of the hose, said hose comprising an inner flexible tubular member and a heater cable attached to and wound spirally therearound, said heater cable including a first electric

A composite, flexible delivery hose for use with a medical humidifier and having temperature sensors arranged one at each end of the hose, said hose comprising an inner flexible tubular member and a heater cable attached to and wound spirally therearound, said heater cable including a first electrical resistance heater wire, a second thermoplastic support wire and a third wire interconnecting said temperature sensors, said first, second and third wires all being imbedded in an outer body of electrically insulating material.