Activity responsive therapeutic delivery system
US5928189A · kind A · utility
221Cited by
0References
37Claims
0Family size
Inventors
Key dates
| Filing date | Apr 22, 1997 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Apr 22, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/63
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
One or more physical activity sensors, such as pressure switches, position sensors and accelerometers, as well as a breath sensor are connected to control a valve. The valve is electrically actuated and has first and second states. A control circuit between the sensors and the valve increase actuation of the valve when continuing activity is sensed. The valve has a single coil and is bistable so that it does not require continuous energization in either state. The fluid is preferably respiratory oxygen so that more oxygen is delivered when the person is active.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.