HEMODIALYSIS SYSTEMS AND METHODS
3 Assignments
0 Petitions
Accused Products
Abstract
Hemodialysis dialysis systems are disclosed. Hemodialysis systems of the invention may include a dialysate flow path including a balancing circuit, a mixing circuit, and/or a directing circuit. The circuits may be defined within one or more cassettes. The fluid circuits may be at least partially isolated, spatially and/or thermally, from electrical components of the system. A gas supply may be provided in fluid communication with the dialysate flow path and/or the dialyzer to, urge dialysate through the dialyzer and blood back to the patient. The hemodialysis systems may include fluid handling devices actuated using a control fluid, optionally delivered using detachable pump. Fluid handling devices may be generally rigid and of a spheroid shape, optionally with a diaphragm dividing the device into compartments.
49 Citations
25 Claims
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1-22. -22. (canceled)
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23. A cassette, comprising:
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a first flow path connecting a first inlet to a first outlet; a second flow path connecting a second inlet to a second outlet; a control fluid path; at least two pumps, each pump comprising a rigid vessel containing a diaphragm dividing the rigid vessel into a first compartment and a second compartment, the first compartment of each pump being in fluidic communication with the control fluid path and the second compartment being in fluidic communication with the second flow path; a balancing chamber able to balance flow between the first flow path and the second flow path; and a control device able to open at least one valve directly controlling fluid within the balancing chamber using pulse-width modulation. - View Dependent Claims (24)
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25-33. -33. (canceled)
Specification