Variable flow incentive spirometer
US4170228A · kind A · utility
17Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1976 |
| Grant date | Oct 9, 1979 |
| Priority date | — |
| Expiry date | Nov 5, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/0875
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An incentive spirometer for breathing control exercising of post-operative patients having flow varying capability. A patient breathing tube connects through a chamber in a base and through suction tubes to the upper end of a gauge tube in which a calibrated ball having a diameter substantially the same as the gauge tube is movable. Vent means in the gauge tube below the ball allow atmospheric air to act on the lower surface of the ball so that inhalation by the patient will cause the ball to rise in the gauge tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.