SYSTEM AND METHOD FOR DELIVERING A TARGET VOLUME OF FLUID
3 Assignments
0 Petitions
Accused Products
Abstract
A method for delivering a target volume of fluid to a destination is provided. The method includes delivering a first volume of fluid to the destination in increments each having approximately a first incremental volume, the first volume of fluid being less than the target volume and delivering a second volume of fluid to the destination in increments each having approximately a second incremental volume, the second incremental volume being less than the first incremental volume, such that the sum of the first volume and the second volume is approximately equal to the target volume.
-
Citations
43 Claims
-
1. (canceled)
-
2. A two-stage pumping system for delivering a target volume of medical fluid, the system comprising:
-
a holder; a cassette mounted in the holder; the cassette having; a first pump chamber configured to pump a volume of fluid; and a second pump chamber configured to pump a volume of fluid; and a controller in operative communication with the cassette to control the first and second pump chambers, wherein the controller is configured to; deliver one or more strokes of the first and second pump chambers, each stroke delivering a first incremental volume, until a first volume of fluid is delivered, and deliver, using one of the first or second chambers, a second volume of fluid in increments each having a second incremental volume, wherein the second incremental volume is less than the first incremental volume. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
-
-
27. A method for delivering a volume of medical fluid, the system comprising:
-
pumping fluid in a first volume increment using a first pump chamber; pumping fluid in a first volume increment using a second pump chamber; repeating the first two pumping acts until a predetermined amount of fluid is delivered; determining which of the first and second pump chambers pumped the least amount of fluid; pumping fluid in a second volume increment using the determined one of the first and second pump chambers that pumped the least amount of fluid; and repeating pumping of the second volume increments until the total volume pumped equals a target volume. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
-
-
40. A peritoneal dialysis system for delivering a target volume of fluid to a patient, the system comprising:
-
a holder; a cassette mounted in the holder; the cassette having; a first pump chamber configured to pump a volume of fluid; and a second pump chamber configured to pump a volume of fluid; and a controller in operative communication with the cassette to control the first and second pump chambers, wherein the controller is configured to; deliver one or more strokes of the first and second pump chambers, each stroke delivering a first incremental volume, until a first volume of fluid is delivered, and means for delivering a second volume of fluid using at least one second incremental volume.
-
-
41. A peritoneal dialysis system for delivering a volume of fluid to a patient, the system comprising:
-
a cassette means having one or more pumping chambers for pumping fluid for the dialysis system a controller in operative communication with the cassette to control the operation of the cassette, the controller controlling one or more pneumatic values to communicate with the cassette wherein the controller includes an operative set of processor executable instructions configured for execution by the controller, to provide; a means for delivering a first volume of fluid using at least one first incremental volume; and a means for delivering a second volume of fluid using at least one second increment volume.
-
-
42. A peritoneal dialysis system for delivering a volume of fluid to a patient, the system comprising:
-
a cassette means having one or more pumping chambers for pumping fluid for the dialysis system; and a controller means for delivering a first volume of fluid using at least one first incremental volume and for delivering a second volume of fluid using at least one second incremental volume.
-
-
43. A method for operation of a cassette configured to pump a volume of fluid, the cassette having at least a membrane with at least a first and second membrane portion the method comprising:
-
actuating the first membrane portion to move fluid in approximately a first volume increment; actuating the second membrane portion to move fluid in approximately the first volume increment; repeating the first two pumping acts until a predetermined amount of fluid is delivered; determining which of the first and second pump chambers pumped the least amount of fluid; pumping fluid in a second volume increment using the determined one of the first and second pump chambers that pumped the least amount of fluid; and repeating pumping of second volume increments until the total volume pumped equals a target volume.
-
Specification