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US 8,905,960 B2Granted
Device for the filtering a complex liquid such as blood, in particularly applicable to an autotransfuser
AssigneeDirection et Priorites SA
InventorsFrancis Gadrat, Bertrand Chastenet
Life of this patent
Estimating the term…
Abstract
A device for the filtration of a complex fluid composition such as blood, includes a base (12) with a bottom (18), a top (14) with a bottom (30), and a membrane (16) that is arranged between the base and the top so as to define a low chamber C1 and a high chamber C2, with an input tap (26) of the complex composition that is to be filtered emptying into the low chamber C1, an output tap (28) of the retentate with elements for adjusting the flow rate emptying into this same low chamber C1, and an output tap (36, 36-1) of the high chamber C2, whereby this output tap (36, 36-1) of the permeate is subjected to negative pressure.
Claims14
A device for the filtration of a complex fluid composition, comprising:
- a base with a bottom extending in a first direction;
- a top arranged over the base;
- a first side extending between the base and the top;
- a second side opposite the first side extending between the base and the top;
- a membrane that is arranged between said base and said top so as to define a low chamber and a high chamber, the first and second sides being disposed with the low and high chambers therebetween;
- an input tap of the complex fluid composition to be filtered that empties into the low chamber through the first side, the low chamber being disposed below the high chamber with respect to a direction of flow of the complex fluid composition from the low chamber to the high chamber, the direction of flow from the low chamber to the high chamber being transverse to the first direction and opposite a direction of gravity so that gravity assists in limiting the clogging of the membrane with particles too large to pass through the membrane;
- an output tap of the retentate of the low chamber, the output tap being configured to adjust the flow rate emptying out from the low chamber through the second side;
- and
- an output tap of the permeate of the high chamber extending through the top of the filtration device, the output tap of the permeate being subjected to negative pressure, the negative pressure drawing fluid with particles small enough to pass through the membrane from the low chamber, through the membrane and into the high chamber,
- wherein the base comprises ribs that form a set of baffles so as to provide circulation of the complex fluid composition to assist in limiting the clogging of the membrane with particles too large to pass through the membrane.
7 more elements
A device for the filtration of a complex fluid composition, comprising:
- a base with a bottom extending in a first direction;
- a top arranged over the base;
- a first side extending between the base and the top;
- a second side opposite the first side extending between the base and the top;
- a membrane that is arranged between said base and said top so as to define a low chamber and a high chamber, the first and second sides being disposed with the low and high chambers therebetween;
- an input tap of the complex fluid composition to be filtered that empties into the low chamber through the first side, the low chamber being disposed below the high chamber with respect to a direction of flow of the complex fluid composition from the low chamber to the high chamber, the direction of flow from the low chamber to the high chamber being transverse to the first direction and opposite a direction of gravity so that gravity assists in limiting the clogging of the membrane with particles too large to pass through the membrane;
- an output tap of the retentate of the low chamber, the output tap being configured to adjust the flow rate emptying out from the low chamber through the second side;
- and
- an output tap of the permeate of the high chamber extending from the top of the filtration device, passing through the bottom of the base in an airtight manner, passing through the membrane in an airtight manner, and comprising perforations in the part of the output tap of the permeate located within the high chamber so as to allow the permeate to pass, the output tap of the permeate being subjected to negative pressure, the negative pressure drawing fluid with particles small enough to pass through the membrane from the low chamber, through the membrane and into the high chamber,
- wherein the base comprises ribs that form a set of baffles so as to provide circulation of the complex fluid composition to assist in limiting the clogging of the membrane with particles too large to pass through the membrane.
7 more elements
Dependencies are inferred from the claim text.