Method and apparatus for performing peritoneal dialysis
First Claim
1. A method for carrying out peritoneal dialysis on a patient whose peritoneum cavity communicates with a patient catheter, the method comprising the steps:
- a) providing an apparatus which includesa manifold,a receptacle for waste dialysate,support means for supporting a plurality of fresh dialysate bags,heating means for heating dialysate bags on said support means,a first conduit for connecting the manifold with the patient catheter,a second conduit for connecting said manifold with said receptacle,at least two further conduits for connecting the manifold individually with a plurality of fresh dialysate bags, andclamping means for selectively closing said conduits;
b) using electronic control means for controlling said clamping means in an automatic mode in which the control means causes the apparatus to cycle through the following phases;
1) a fill/dwell phase in which, for a first predetermined time, the first conduit and one of said at least two further conduits are both open while the remaining conduits are closed, whereby dialysate enters the patient'"'"'s peritoneum cavity by gravity and remains there, so long as the vertical level of the dialysate bags is above that of the patient, and2) a drain phase in which, for a second predetermined time, the first and second conduits are both open while the remaining conduits are closed, whereby waste dialysate drains by gravity from the patient'"'"'s peritoneum cavity to said receptacle, so long as the vertical level of the patient is above that of the receptacle,c) determining whether a sufficient quantity of dialysate has drained from the patient'"'"'s cavity during the drain phase, and passing such information to said electronic control means, the electronic control means being such as not to advance to the next fill/dwell phase if an insufficient quantity of dialysate has drained, andd) repeating said steps
1) and
2) for another fresh dialysate bag, and so on until all such bags have been used.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus for carrying out peritoneal dialysis includes a central manifold, a receptacle for waste dialysate, means for supporting and heating a plurality of fresh dialysate bags, a first conduit connecting the manifold with the patient catheter, a second conduit for connecting the manifold with the receptacle, and a plurality of additional conduits connecting the manifold individually with a plurality of fresh dialysate bags. The individual conduits can be selectively closed by clamping means controlled by an electronic control, and the latter has an automatic mode which cycles the apparatus through (a) a fill/dwell phase in which the contents of one of the fresh dialysate bags flows into the patient'"'"'s peritoneum cavity by gravity and remains there, and (b) a drain phase which allows waste dialysate in the patient'"'"'s peritoneum cavity to drain by gravity into the receptacle. The steps (a) and (b) are repeated for all of the bags until they have been used up. A safety provision is provided to determine whether a sufficient quantity of dialysate has drained from the patient'"'"'s cavity during the drain phase. If not, the apparatus is shut down.
-
Citations
10 Claims
-
1. A method for carrying out peritoneal dialysis on a patient whose peritoneum cavity communicates with a patient catheter, the method comprising the steps:
-
a) providing an apparatus which includes a manifold, a receptacle for waste dialysate, support means for supporting a plurality of fresh dialysate bags, heating means for heating dialysate bags on said support means, a first conduit for connecting the manifold with the patient catheter, a second conduit for connecting said manifold with said receptacle, at least two further conduits for connecting the manifold individually with a plurality of fresh dialysate bags, and clamping means for selectively closing said conduits; b) using electronic control means for controlling said clamping means in an automatic mode in which the control means causes the apparatus to cycle through the following phases; 1) a fill/dwell phase in which, for a first predetermined time, the first conduit and one of said at least two further conduits are both open while the remaining conduits are closed, whereby dialysate enters the patient'"'"'s peritoneum cavity by gravity and remains there, so long as the vertical level of the dialysate bags is above that of the patient, and 2) a drain phase in which, for a second predetermined time, the first and second conduits are both open while the remaining conduits are closed, whereby waste dialysate drains by gravity from the patient'"'"'s peritoneum cavity to said receptacle, so long as the vertical level of the patient is above that of the receptacle, c) determining whether a sufficient quantity of dialysate has drained from the patient'"'"'s cavity during the drain phase, and passing such information to said electronic control means, the electronic control means being such as not to advance to the next fill/dwell phase if an insufficient quantity of dialysate has drained, and d) repeating said steps
1) and
2) for another fresh dialysate bag, and so on until all such bags have been used. - View Dependent Claims (2)
-
-
3. An apparatus for carrying out peritoneal dialysis on a patient whose peritoneum cavity communicates with a patient catheter, the apparatus comprising:
-
(1) a manifold, (2) a receptacle for waste dialysate, (3) a plurality of fresh dialysate bags, (4) support means supporting said plurality of fresh dialysate bags, (5) heating means for heating said dialysate bags on said support means, (6) a first conduit for connecting the manifold with the patient catheter, (7) a second conduit for connecting said manifold with said receptacle, (8) at least two further conduits connecting the manifold individually with each of said fresh dialysate bags, (9) clamping means for selectively closing at least said second and said further conduits, and (10) electronic control means for controlling said clamping means, the electronic control means having an automatic mode in which the control means causes the apparatus to cycle through the following phases; a) a fill/dwell phase in which, for a first predetermined time, the first conduit and one of said at least two further conduits are both open while the remaining conduits are closed, thus allowing dialysate to enter the patient'"'"'s peritoneum cavity by gravity and remain there, so long as the vertical level of the dialysate bags is above that of the patient, and b) a drain phase in which, for a second predetermined time, the first and second conduits are both open while the remaining conduits are closed, thus allowing waste dialysate to drain by gravity from the patient'"'"'s peritoneum cavity to said receptacle, so long as the vertical level of the patient is above that of the receptacle, said steps a) and b) repeating for another fresh dialysate bag, and so on until all such bags have been used; (11) safety means for determining whether a sufficient quantity of dialysate has drained from the patient'"'"'s peritoneum cavity during the drain phase, and for passing such information to said electronic control means, said electronic control means being such as not to advance to the next fill/dwell phase if an insufficient quantity of dialysate has drained, and (12) selection means allowing a user to select the first and second predetermined times. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10)
-
Specification