Blood purifying device including plasma separation and purification filters
AssigneeBellco SRL
InventorsMarco Lupotti, Mary Louise Wratten
Life of this patent
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Abstract
A filter for purifying blood (1, 100), comprising a container body (2, 102) in which there are: —an intake port (3, 103) for an incoming blood stream (4, 104), —a first discharge port (5, 105) for an outgoing blood stream (6, 106), and —a second discharge port (7, 107) for a purified plasma stream (8, 108); the container body (2, 102) comprises first filtering means (9, 109) adapted to separate a stream of plasma to be purified (10, 100) from the incoming blood stream (4, 104), and second filtering means (11, 111) adapted to purify the stream of plasma to be purified (10, 110) to obtain the purified plasma stream (8, 108).
Claims20
A device comprising:
- a container body defining:
- an intake port configured to receive an incoming blood stream;
- a first discharge port;
- and
- a second discharge port;
- a first filter in the container body, the first filter being configured to separate the incoming blood stream into a stream of plasma and an outgoing blood stream, wherein the first filter comprises a plurality of capillary structures configured to separate plasma from the incoming blood stream, and wherein the container body defines a first fluid pathway through which the outgoing blood stream flows to exit the container through the first discharge port;
- and
- a second filter in the container body, the second filter being configured to purify the stream of plasma, wherein the container body defines a second fluid pathway through which the stream of plasma flows from the second filter to the second discharge port, and wherein the second filter comprises an adsorbing material, the plurality of capillary structures being embedded in the adsorbing material, wherein the adsorbing material comprises a plurality of hydrophobic areas configured to bond to hydrophobic sites present in any cytokines, toxins, drugs, and poison present in the stream of plasma so that hydrophilic components that belong to an aqueous phase of plasma passes through the adsorbing material,
- wherein the first filter is configured such that the stream of plasma flows outside the capillary structures of the plurality of capillary structures to the adsorbing material of the second filter and the outgoing blood stream flows inside the capillary structures of the plurality of capillary structures to the first discharge port.
A device comprising:
- a container body defining an intake port configured to receive a blood stream;
- a first filter in the container body, the first filter comprising a plurality of semipermeable capillary structures configured to separate plasma from the blood stream, the plurality of capillary structures extending from a first end to a second end;
- a second filter in the container body, the second filter being configured to purify the plasma separated from the blood stream by the first filter, wherein the second filter comprises an adsorbing material extending along a section of the container body, and wherein the plurality of semipermeable capillary structures extend along at least the section of the container body and extend through the adsorbing material such that the first and second ends of the plurality of semipermeable capillary structures are on opposite sides of the adsorbing material, and
- wherein the semipermeable capillary structures of the plurality of semipermeable capillary structures define walls through which the plasma separated from the blood stream flows to the second filter along the section of the container body;
- and
- a membrane separating the first filter and the second filter.
Dependencies are inferred from the claim text.