Apparatus for peritoneal dialysis
First Claim
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1. A dialysis apparatus comprising:
- first means for supplying dialysis fluid,second means for measuring a predetermined quantity of dialysis fluid,third means for detecting a minimum quantity of dialysis fluid,a catheter,structural means supporting said first means above said second means, said second means above said catheter and said third means below said catheter,a said fluid flow path interconnecting said first and second means,a second fluid flow path interconnecting said second means and said catheter,a third fluid flow path interconnecting said catheter and said third means,a fourth fluid flow path for fluid draining from said third means,valve means for selectively(i) blocking said first and third paths while leaving said second and fourth paths open,(ii) blocking said second and third paths while leaving said first and fourth paths open, and(iii) blocking said second and fourth paths while leaving said first and third paths open,and timer/computer means for dictating the time intervals during which the valve means is in modes (i), (ii) and (iii).
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Abstract
This invention relates to a dialysis apparatus having means for supplying dialysis fluid to the peritoneal cavity of a patient and for draining the fluid from the cavity. Valve means are provided to permit a "FILL", a "DWELL", and a "DRAIN" phase to be carried out each cycle. The valve means includes individually occluding cams which control fluid flow through individual tubes.
188 Citations
18 Claims
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1. A dialysis apparatus comprising:
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first means for supplying dialysis fluid, second means for measuring a predetermined quantity of dialysis fluid, third means for detecting a minimum quantity of dialysis fluid, a catheter, structural means supporting said first means above said second means, said second means above said catheter and said third means below said catheter, a said fluid flow path interconnecting said first and second means, a second fluid flow path interconnecting said second means and said catheter, a third fluid flow path interconnecting said catheter and said third means, a fourth fluid flow path for fluid draining from said third means, valve means for selectively (i) blocking said first and third paths while leaving said second and fourth paths open, (ii) blocking said second and third paths while leaving said first and fourth paths open, and (iii) blocking said second and fourth paths while leaving said first and third paths open, and timer/computer means for dictating the time intervals during which the valve means is in modes (i), (ii) and (iii). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of peritoneal dialysis, which includes the steps:
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providing a dialysis apparatus which includes first means for supplying dialysis fluid, second means for measuring a predetermined quantity of dialysis fluid, third means for detecting a minimum quantity of dialysis fluid, a catheter into the peritoneal cavity of a patient, structural means supporting said first means above said second means, said second means above said catheter, and said third means below said catheter, means defining a first fluid flow path interconnecting said first and second means, means defining a second fluid flow path interconnecting said second means and said catheter, means defining a third fluid flow path interconnecting said catheter and said third means, and means defining a fourth fluid flow path for fluid draining from said third means; in rotational sequence; (i) blocking said first and third paths while leaving said second and fourth paths open, whereby to allow dialysis fluid in said second means to pass by gravity along said second flow path into the peritoneal cavity of the patient and simultaneously to allow dialysis fluid in said third means to pass outwardly along said fourth path; (ii) blocking said second and third paths while leaving said first and fourth paths open, whereby to initiate the replenishment of fresh dialysis fluid in the second means from the first means along said first flow path, and simultaneously allowing further drainage of used dialysis fluid from the third means, during which dialysis fluid in the peritoneal cavity of the patient remains there; and (iii) blocking said second and fourth paths while leaving said first and third paths open, whereby fresh dialysis fluid continues to pass along said first path from the first means to the second means, and simultaneously dialysis fluid from the peritoneal cavity of the patient begins to drain along the catheter and said third path into said third means; mode (i) constituting the fill mode for the patient, mode (ii) constituting the dwell mode for the patient, and mode (iii) constituting the drain mode for the patient. - View Dependent Claims (18)
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Specification