Humidification chambers
US8181940B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2011 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Dec 7, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/7545
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A humidification chamber for use in a breathing circuit to humidify gases before inhalation is disclosed. The humidification chamber is adapted to contain a volume of liquid, and includes a gas inlet port, a gas outlet port, and a fluid inlet for introducing liquid into the humidification chamber. The fluid inlet is provided with a primary valve seat and a secondary valve seat. An actuating member engages the primary valve seat when liquid within the humidification chamber is at or above a predetermined acceptable level. The actuating member is deformable in response to an increase in liquid level above the predetermined acceptable level to a deformed configuration in engagement with the secondary valve to prevent liquid from flowing through the fluid inlet into the humidification chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.