Pump with venting
US7905859B2 · kind B2 · utility
109Cited by
53References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2007 |
| Grant date | Mar 15, 2011 |
| Priority date | — |
| Expiry date | Mar 1, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2207/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medication pump includes a housing including an external wall and a plurality of internal adjoining housings, including a first housing enclosing a cartridge. The pump includes a primary vent for venting the medication pump to atmosphere, the primary vent including a primary liquid barrier allowing passage of gas therethrough while preventing passage of liquid therethrough. The pump includes a secondary vent on the first housing, the secondary vent including a secondary liquid barrier allowing passage of gas therethrough to an interior of the housing while preventing passage of liquid therethrough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.