Blood filter
US4743371A · kind A · utility
62Cited by
32References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1986 |
| Grant date | May 10, 1988 |
| Priority date | — |
| Expiry date | Feb 28, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M1/325
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A filter device for a cardiotomy reservoir comprises multiple layers of concentric, tubular elements with a central passage for supply of blood, purified by passage through the device. A first, inner element for defoaming the blood comprises a porous sponge material within a second element comprising a depth filter medium for filtering the blood. The depth filter is surrounded by a third element of porous sponge material spacing apart the depth filter and the outer, fourth element, a fine-filter screen for removing substantially all remaining, undesirable particulate matter in the blood.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.