Apparatus for testing pulmonary devices
US5528944A · kind A · utility
9Cited by
11References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1995 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Sep 26, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00725
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for testing pulmonary devices such as endotracheal tubes and connectors is disclosed. The apparatus forces a predetermined volume of air or gas through the pulmonary device in accordance with a preselected waveform in a first and/or second direction under conditions that simulate an in-patient use environment. The device also measures the amount of work required to force the air or gas through the device under selected conditions. In a preferred embodiment of the invention, the device produces a laminar or turbulent flow of gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.