Method and apparatus for indicating pressure in chest drainage devices
US7686801B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2004 |
| Grant date | Mar 30, 2010 |
| Priority date | — |
| Expiry date | Jun 16, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2016/0027
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus is provided for indicating the presence of pressure within a collection chamber of a device such as a chest drainage device. The apparatus includes a bladder configured to be positioned within the collection chamber or within another chamber in fluid flow communication with the collection chamber. The bladder has a concavity formed therein and configured to contract or expand in response to pressure in the collection chamber. The apparatus also includes surfaces associated with the bladder that are configured to move with respect to one another upon contraction or expansion of the concavity of the bladder, thereby indicating pressure within the collection chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.