Therapeutic gas delivery device with pulsed and continuous flow control
US10328231B2 · kind B2 · utility
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23References
16Claims
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Key dates
| Filing date | Apr 10, 2017 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Jun 29, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/3334
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Described are methods and devices for therapeutic or medical gas delivery that utilize at least one proportional control valve and at least one binary control valve. The proportional control valve may be in series with the binary control valve to provide a valve combination capable of pulsing therapeutic gas at different flow rates, depending on the setting of the proportional control valve. Alternatively, the proportional control valve and binary control valve may be in parallel flow paths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.