Dialysis system including peristaltic tubing pumping cassette
First Claim
Patent Images
1. A hemodialysis system comprising:
- a blood pump;
a first dialysate pump;
a second dialysate pump;
a dialysate regeneration cartridge;
a fluid cassette including an upper portion and a lower portion,a blood pumping tube extending linearly from the upper portion to the lower portion of the fluid cassette, the blood pumping tube actuated by the blood pump,a first dialysate pumping tube extending linearly from the upper portion to the lower portion of the fluid cassette, the first dialysate pumping tube actuated by the first dialysate pump,a second dialysate pumping tube extending linearly from the upper portion to the lower portion of the fluid cassette, the second dialysate pumping tube actuated by the second dialysate pump, anda recirculation line in fluid communication with the dialysate regeneration cartridge; and
a valving arrangement that selectively allows used dialysate to flow to a drain line or the dialysate regeneration cartridge.
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Abstract
A hemodialysis system includes: a peristaltic blood pump; a first peristaltic dialysate pump; a second peristaltic dialysate pump; and a fluid cassette including an upper portion and a lower portion, a blood pumping tube extending linearly from the upper portion to the lower portion, the blood pumping tube actuated by the peristaltic blood pump, a first dialysate pumping tube extending linearly from the upper portion to the lower portion, the first dialysate pumping tube actuated by the first dialysate pump, and a second dialysate pumping tube extending linearly from the upper portion to the lower portion, the second dialysate pumping tube actuated by the second dialysate pump.
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Citations
23 Claims
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1. A hemodialysis system comprising:
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a blood pump; a first dialysate pump; a second dialysate pump; a dialysate regeneration cartridge; a fluid cassette including an upper portion and a lower portion, a blood pumping tube extending linearly from the upper portion to the lower portion of the fluid cassette, the blood pumping tube actuated by the blood pump, a first dialysate pumping tube extending linearly from the upper portion to the lower portion of the fluid cassette, the first dialysate pumping tube actuated by the first dialysate pump, a second dialysate pumping tube extending linearly from the upper portion to the lower portion of the fluid cassette, the second dialysate pumping tube actuated by the second dialysate pump, and a recirculation line in fluid communication with the dialysate regeneration cartridge; and a valving arrangement that selectively allows used dialysate to flow to a drain line or the dialysate regeneration cartridge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A hemodialysis system comprising:
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a blood pump; a first dialysate pump; a second dialysate pump; a dialyzer; a dialysate regeneration cartridge; a fluid cassette including a blood pumping tube for operation with the blood pump, a first dialysate pumping tube for operation with the first dialysate pump, a second dialysate pumping tube for operation with the second dialysate pump, and a recirculation line enabling used dialysate to be returned to the dialysate regeneration cartridge; a blood outlet tube extending from a blood outlet of the fluid cassette to a blood inlet of the dialyzer; and a blood inlet tube extending from a blood outlet of the dialyzer to a blood inlet of the fluid cassette; a drain line in fluid communication with the fluid cassette; and a valving arrangement that selectively allows used dialysate to flow to the drain line or the dialysate regeneration cartridge. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A hemodialysis system comprising:
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a peristaltic blood pump; a first peristaltic dialysate pump; a second peristaltic dialysate pump; a dialysate regeneration cartridge; a fluid cassette including a blood pumping tube for operation with the peristaltic blood pump, a first dialysate pumping tube for operation with the first peristaltic dialysate pump, a second dialysate pumping tube for operation with the second peristaltic dialysate pump, and a recirculation line enabling used dialysate to be returned to the dialysate regeneration cartridge; a drain line in fluid communication with the fluid cassette; and a valving arrangement that selectively allows used dialysate to flow to the drain line or the dialysate regeneration cartridge. - View Dependent Claims (23)
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Specification