Removal of carbon dioxide and carbon monoxide from patient expired gas during anesthesia
US7246621B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 4, 2005 |
| Grant date | Jul 24, 2007 |
| Priority date | — |
| Expiry date | Apr 4, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M16/1055
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and system for the application of molecular sieves to the removal of carbon dioxide and carbon monoxide from the patient expired gases during anesthesia. The system is especially useful in anesthesia using any of the halogenated ether inhalation anesthetic agents. The expired gases are dried using a non-reactive desiccant to remove water, passed through a filter capable of removing particles larger than 0.3 microns, passed through a bed containing either natural or synthetic molecular sieves capable of removing carbon dioxide and carbon monoxide and then returned to the breathing circuit for recirculation to the patient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.