Humidified gases delivery apparatus
US7588029B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2001 |
| Grant date | Sep 15, 2009 |
| Priority date | — |
| Expiry date | Nov 26, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M16/161
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A gases transportation pathway for use in supplying a humidified gases stream to a patient includes regulated conduit heating. The regulated conduit heating may include a section of positive temperature coefficient material wherein the localized electrical resistance of the material is positively related to the localized temperature. The regulated conduit heating may be a layer of positive temperature coefficient material within the wall of the gases transportation pathway with at least a pair of conductors running the length of the pathway and in electrically conductive contact with the positive temperature coefficient material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.