Method of preventing air from becoming entrapped within a filtration device
US6251292A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 4, 1999 |
| Grant date | Jun 26, 2001 |
| Priority date | — |
| Expiry date | Nov 4, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/7536
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An in-line gravity filtration device for biological fluids such as blood or blood products is disclosed. The device includes a series of channels formed downstream of filtration elements. The channels are defined in cross sectional area by the distance between the filtration elements and their bottoms. The channels are configured to form flow paths to an outlet port so that air within the channels is forced downstream through the outlet port thereby minimizing air being trapped on the downstream side of the device. For optimum performance, the cross section area of a single continuous channel, or the sum of the cross sectional area of parallel channels, leading to a single outlet port, should not exceed the cross sectional area of the outlet port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.