Insulated breathing tube
US5623922A · kind A · utility
Inventor
Key dates
| Filing date | Jan 3, 1995 |
| Grant date | Apr 29, 1997 |
| Priority date | — |
| Expiry date | Jan 3, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/911
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention includes a method for preventing heat loss from the inhalent gas in a recirculatory aided breathing circuit thereby reducing internal vapor condensation commonly associated with such breathing circuits while also stabilizing the relative temperature and humidity within such breathing circuits. A thin flexible partially longitudinally compressed casing is provided to surround a thicker corrugated tube to provide an insulating dead air space therebetween. In another arrangement selected enlarged corrugations are provided in spaced relation along the corrugated tube to engage the inner surface of the casing in a preselected spaced arrangement with respect to said corrugated tube to compartmentalize insulating dead air spaces between the tube and the casing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.