Conduit with heating element
AssigneeFisher & Paykel Healthcare Limited
InventorsDaniel John SMITH, David Peter BALDWIN
Life of this patent
Estimating the term…
Abstract
A conduit for a breathing circuit includes a heater associated, at least in part, with a hydrophilic layer. The purpose of the heater is to evaporate any condensed liquid collecting in the conduit, which is first sucked up by the hydrophilic layer. The heated wick reduces the risk of collected water being passed to the patient and causing choking fits or discomfit. It is preferred that the heated wick lies freely in the conduit to settle at low points in the conduit where condensation may collect.
Claims17
(canceled)
A conduit for a breathing circuit, the conduit comprising:
- an enclosing wall having a first end and a second end;
- a heater positioned within the conduit, the heater comprising heater wire strands, the heater wire strands being coated in an electrical insulating material, the heater wire strands being formed into a braided mesh tube.
A conduit for a breathing circuit, the conduit comprising:
- an enclosing wall having a first end and a second end;
- a heater positioned within the conduit, the heater comprising heater wires, the heater wires comprising at least one positive wire and at least one negative wire, the at least one positive wire and the at least one negative wire being arranged co-axially, each of the at least one positive wire and the at least one negative wire being surrounded by an electrical insulating layer, and the heater wires being surrounded by an outer water-attracting braid.
A conduit for a breathing circuit, the conduit comprising:
- an enclosing wall having a first end and a second end;
- a heater positioned within the conduit, the heater comprising at least one elongate heating element, the at least one elongate heating element being at least partially covered with an outer hydrophilic layer, the outer hydrophilic layer being constructed of a water-resistant material, and the outer hydrophilic layer attracting water into spaces and/or voids on an outer surface of the outer hydrophilic layer through capillary action.
A conduit for a breathing circuit, the conduit comprising:
- an enclosing wall having a first end and a second end;
- a heater positioned within the conduit, the heater comprising at least one elongate heating element, the at least one elongate heating element being at least partially covered with an outer layer, the outer layer including grooves and/or fins, the grooves and/or fins being configured to facilitate capillary action.
Dependencies are inferred from the claim text.