Device and method for measuring lung performance
US6447459B1 · kind B1 · utility
55Cited by
32References
82Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 7, 2000 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Apr 7, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/743
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The flow measurement device of the present invention incorporates numerous novel features. For example, the device includes a displacement measuring device to measure the position of a movable plate member, a self-oscillation dampener to dampen oscillations of the plate member, one or more stiffening members engaging or incorporated into the plate member to increase the resonant frequency of the plate member and reduce flutter, and a conduit providing for differing directions of air flow at different points along its length to eliminate the effects of gravity on flow measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.