Extracorporeal blood chamber
First Claim
1. An extracorporeal blood chamber for use in dialysis of a patient, comprising:
- (a) an expansion reservoir provided with a bottom, a top, at least a first side extending between the bottom and the top, a first access arranged on said first side at a distance from said bottom and said top, and a second access;
(b) a first blood conduit having an end and terminating in said first access, the first blood conduit adapted for connection to a blood line conveying arterial blood from the patient, the first blood conduit being effective to convey the arterial blood to the first access;
(c) a second replacement fluid conduit terminating in said first side of the expansion reservoir, the second replacement fluid conduit adapted for connection to a replacement fluid line conveying replacement fluid, the second replacement fluid conduit being effective to convey the replacement fluid to the expansion reservoir;
whereinthe first blood conduit terminates in the first access so that arterial blood which flows in the first blood conduit has a first flow direction having at least a first motion component directed towards the bottom of the expansion reservoir; and
the second conduit terminates in the first side of the expansion reservoir below the end of the first conduit, with reference to a use configuration of the expansion reservoir in which the bottom and the top are arranged, respectively, inferiorly and superiorly.
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Accused Products
Abstract
An extracorporeal blood chamber (12) comprises an expansion reservoir (47) having a first access (48) arranged laterally and a second access (49) arranged on the bottom of the chamber (12). The chamber comprises, integrally with the reservoir, a first conduit terminating in the first access, a second conduit terminating in the first access, and a third conduit terminating in the second access. The extracorporeal blood enters the reservoir through the first conduit and there mixes with an infusion fluid which enters through the second conduit. The resulting mixture exits through the third conduit. The chamber is used in a hemo(dia)filtration apparatus to mix the blood optimally with the replacement fluid.
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Citations
21 Claims
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1. An extracorporeal blood chamber for use in dialysis of a patient, comprising:
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(a) an expansion reservoir provided with a bottom, a top, at least a first side extending between the bottom and the top, a first access arranged on said first side at a distance from said bottom and said top, and a second access; (b) a first blood conduit having an end and terminating in said first access, the first blood conduit adapted for connection to a blood line conveying arterial blood from the patient, the first blood conduit being effective to convey the arterial blood to the first access; (c) a second replacement fluid conduit terminating in said first side of the expansion reservoir, the second replacement fluid conduit adapted for connection to a replacement fluid line conveying replacement fluid, the second replacement fluid conduit being effective to convey the replacement fluid to the expansion reservoir;
whereinthe first blood conduit terminates in the first access so that arterial blood which flows in the first blood conduit has a first flow direction having at least a first motion component directed towards the bottom of the expansion reservoir; and the second conduit terminates in the first side of the expansion reservoir below the end of the first conduit, with reference to a use configuration of the expansion reservoir in which the bottom and the top are arranged, respectively, inferiorly and superiorly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification