Blood filter
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United States of America Patent
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-
May 10, 1988
Issued Date -
N/A
app pub date -
Feb 28, 1986
filing date -
Apr 8, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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