I.V. Filter apparatus
US4525182A · kind A · utility
44Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1983 |
| Grant date | Jun 25, 1985 |
| Priority date | — |
| Expiry date | Aug 29, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/7536
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter apparatus is provided which is adapted for filtration of intravenous liquids and separates gas in the incoming intravenous liquid prior to delivering the filtered liquid to a patient. Incoming liquid is passed into a space within a filter holder, which space has a smaller portion that excludes gas due to surface tension forces and a larger portion where gas accumulates. A hydrophobic filter membrane is positioned adjacent the large portion of the space to permit passage of gas from the space. A hydrophilic filter membrane is positioned within the space to filter the liquid prior to administration to the patient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.