Artificial kidney
First Claim
Patent Images
1. In an artificial kidney comprising, in combination, the following elements:
- (a) a haemodialyzer including;
(i) a membrane which is capable of permitting the treatment of blood, particularly by dialysis and by ultrafiltration, said membrane dividing the haemodialyzer into first and second compartments;
(ii) means for feeding blood to and from the first compartment; and
(iii) means for feeding the dialysis liquid to and from the second compartment;
(b) an extracorporal blood circuit through which the blood passes outside the haemodialyser from the patient to the blood feeding means of the haemodialyzer;
(c) means for preparing the dialysis liquid, ready for circulation into a dialysis liquid circuit through said second compartment;
(d) means for causing the dialysis liquid to circulate through said second compartment into said dialysis liquid circuit;
(e) means for regulating the pressure of the dialysis liquid in said haemodialyzer;
(f) storage means for storing the fresh and/or used dialysis liquid(g) means for removing and measuring amounts of dialysis liquid equal to the desired amounts of ultrafiltrate and(h) means for controlling and checking, in particular, the elements (b) and (d),the improvement comprising,two independent flexible elements of generally thin planar shape, provided with apertures for liquids, and located on opposite parts of the haemodialyzer,at least one rigid or semi-rigid multifunctional element provided with apertures for liquids, located internally between the flexible elements, in association with the haemodialyzer,two other rigid or semi-rigid multifunctional elements, one of which is located external of each of the flexible elements,the rigid or semi-rigid multifunctional elements contain within themselves the extracorporal blood circuit and the dialysis liquid circuit, the flexible elements performing all sealing functions.
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Abstract
An artificial kidney comprising a haemodialyser (a) associated with and preferably integrated into a common unit D adapted to be connected simultaneously to a patient P, to a container 34 of fresh and/or used dialysis liquid, and to a controlling and checking console (h). The disposable common unit can perform all the functions necessary for a treatment. These functions are not performed by self-contained members, but by a small number of flexible multifunctional parts, such as elements 14 and 15, each cooperating with rigid parts such as parts 10, 11, 12 and 13.
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Citations
7 Claims
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1. In an artificial kidney comprising, in combination, the following elements:
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(a) a haemodialyzer including; (i) a membrane which is capable of permitting the treatment of blood, particularly by dialysis and by ultrafiltration, said membrane dividing the haemodialyzer into first and second compartments; (ii) means for feeding blood to and from the first compartment; and (iii) means for feeding the dialysis liquid to and from the second compartment; (b) an extracorporal blood circuit through which the blood passes outside the haemodialyser from the patient to the blood feeding means of the haemodialyzer; (c) means for preparing the dialysis liquid, ready for circulation into a dialysis liquid circuit through said second compartment; (d) means for causing the dialysis liquid to circulate through said second compartment into said dialysis liquid circuit; (e) means for regulating the pressure of the dialysis liquid in said haemodialyzer; (f) storage means for storing the fresh and/or used dialysis liquid (g) means for removing and measuring amounts of dialysis liquid equal to the desired amounts of ultrafiltrate and (h) means for controlling and checking, in particular, the elements (b) and (d), the improvement comprising, two independent flexible elements of generally thin planar shape, provided with apertures for liquids, and located on opposite parts of the haemodialyzer, at least one rigid or semi-rigid multifunctional element provided with apertures for liquids, located internally between the flexible elements, in association with the haemodialyzer, two other rigid or semi-rigid multifunctional elements, one of which is located external of each of the flexible elements, the rigid or semi-rigid multifunctional elements contain within themselves the extracorporal blood circuit and the dialysis liquid circuit, the flexible elements performing all sealing functions. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification