Alveolar breath collection apparatus
US9918661B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2015 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Oct 28, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/0256
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus for collecting volatile compounds in human breath. The apparatus includes a device for discriminating between alveolar and non-alveolar portions of exhaled breath, a device for measuring volume of exhaled breath, a chamber with a piston or similar compressible device with clean internal services designed to collect a precise volume of alveolar breath, a pump to draw the exhaled breath from the chamber through at least one sorbent tube, a subsystem for introducing a clean gas into the chamber to expand it and for purging the tubing of the system, and a subsystem for selectively collecting a room air sample. A manifold is provided in the apparatus for receiving sorbent tubes and comprises an input block and output block, and a locking lever for actuating the input and output blocks linearly towards and away from each other and selectively locking them in a fully closed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.