Gases delivery conduit

Details Gases delivery conduit Gases delivery conduit

2006-10-10

2006-10-10

Campbell, Thor S. (Department: 3742)

Electric resistance heating devices

Heating devices

Continuous flow type fluid heater

C219S502000

Reexamination Certificate

active

07120354

ABSTRACT:
A gases delivery conduit for the supply of humidified medical gases as formed from an extruded plastic tube. The extruded plastic tube includes at least one heating element embedded within the wall of the tube. The heating element includes a pair of electrical conductors separated by a positive temperature coefficient material wherein the localised resistance of the material is positively related to the localised temperature.

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