Oxygen-conserving regulator assembly
US6116242A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1997 |
| Grant date | Sep 12, 2000 |
| Priority date | — |
| Expiry date | Apr 28, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/8225
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus is provided for controlling discharge of oxygen from an oxygen supply source to a patient. The apparatus includes an oxygen supply inlet, a pressure regulator coupled to the oxygen supply inlet and configured to reduce pressure of oxygen received from the oxygen supply inlet to a selected magnitude, a flow controller coupled to the pressure regulator and configured to meter oxygen received from the pressure regulator at a selected flow rate, and an oxygen distribution assembly including a pneumatic demand oxygen valve and a conduit conducting oxygen discharged from the flow controller through the pressure regulator to the pneumatic demand oxygen valve for delivery to a patient. The flow controller includes a chamber and a rotary valve for splitting oxygen discharged from the chamber into a first stream in an oxygen supply passageway for use by a patient and a second stream in a diaphragm supply passageway for controlling operation of pneumatic demand oxygen valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.