Oxygen enriching apparatus, controller, and recording medium
US7077133B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2001 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Oct 16, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2016/0027
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A small oxygen enriching apparatus which can supply oxygen-enriched gas at high flow rate without imparting unnatural sensation to a user, as well as a controller and recording medium therefore. In step 100, a judgment is made as to whether a flow rate set by use of a flow-rate setting unit 45 is equal to or less than a continuous base flow rate (3 liters/min). When the set flow rate is a low flow rate of not greater than 3 liters/min, breath-synchronized operation is not performed (continuous supply is to be performed), and therefore, in step 110, oxygen-enriched gas is supplied continuously at the set flow rate. When the set flow rate is a high flow rate of greater than 3 liters/min, breath-synchronized operation is to be performed, and therefore, in step 120, the orifice is set to an opening that enables supply at 5 liters/min. In step 140, in order to perform breath-synchronized operation, control for opening and closing an electromagnetic valve 47 is performed. Through this operation, the oxygen-enriched gas is supplied at a high flow rate (5 liters/min) in the inhalation period of each breathing cycle and at a low flow rate (2 liters/min) in the exhalation period via a bypass…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.