Automated dialysis system including touch screen controlled mechanically and pneumatically actuated pumping
First Claim
1. A peritoneal dialysis system comprising:
- a hardware unit including a piston having a contact surface, a pneumatic source for supplying a negative pressure, a stepper motor configured to move the piston, a controller including at least one processor and memory device programmed to control the pneumatic source and the stepper motor, and a video monitor operating with a touch screen to enable a user to send and receive information to and from the controller; and
a disposable unit received by the hardware unit, the disposable unit including a moveable membrane positioned adjacent to and operable with the contact surface of the piston, the piston moveable towards and away from the disposable unit,wherein the programmed at least one processor and memory of the controller operate to (i) cause the pneumatic source to apply the negative pressure to the moveable membrane so that the negative pressure moves the membrane to conform to a shape of the contact surface and (ii) control the stepper motor so that the shape-contacted membrane follows the piston as the piston is moved away from the disposable unit and moves with the piston as the piston is moved into the disposable unit.
1 Assignment
0 Petitions
Accused Products
Abstract
A peritoneal dialysis system includes: a hardware unit including a piston having a contact surface, a pneumatic source for supplying a negative pressure, a stepper motor, a controller including a processor and memory programmed to control the pneumatic source and the stepper motor, and a video monitor operating with a touch screen for sending and receiving information to and from the controller; and a disposable unit including a moveable membrane positioned adjacent to the contact surface, the programmed processor and memory operable to (i) cause the pneumatic source to apply the negative pressure to the membrane so that the negative pressure moves the membrane to conform to a shape of the contact surface and (ii) control the stepper motor so that the membrane follows the piston as the piston is moved away from the disposable unit and moves with the piston as the piston is moved into the disposable unit.
-
Citations
20 Claims
-
1. A peritoneal dialysis system comprising:
-
a hardware unit including a piston having a contact surface, a pneumatic source for supplying a negative pressure, a stepper motor configured to move the piston, a controller including at least one processor and memory device programmed to control the pneumatic source and the stepper motor, and a video monitor operating with a touch screen to enable a user to send and receive information to and from the controller; and a disposable unit received by the hardware unit, the disposable unit including a moveable membrane positioned adjacent to and operable with the contact surface of the piston, the piston moveable towards and away from the disposable unit, wherein the programmed at least one processor and memory of the controller operate to (i) cause the pneumatic source to apply the negative pressure to the moveable membrane so that the negative pressure moves the membrane to conform to a shape of the contact surface and (ii) control the stepper motor so that the shape-contacted membrane follows the piston as the piston is moved away from the disposable unit and moves with the piston as the piston is moved into the disposable unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A peritoneal dialysis system comprising:
-
a hardware unit including a piston having a contact surface, a pneumatic source for supplying a negative pressure, a stepper motor configured to move the piston, a controller including at least one processor and memory device programmed to control the pneumatic source and the stepper motor, and a video monitor operating with a touch screen to enable a user to send and receive information to and from the controller; and a disposable unit received by the hardware unit, the disposable unit including a moveable membrane operable with the contact surface of the piston, the controller programmed to (a) operate the stepper motor so as to move the piston towards and away from the disposable unit and (b) cause the pneumatic source to apply the negative pressure to the moveable membrane of the disposable unit, wherein (i) the negative pressure causes the moveable membrane to conform to a shape of the contact surface, (ii) the shape-conformed membrane follows the piston as the piston is moved away from the disposable unit by the stepper motor, and (iii) the shape-conformed membrane moves with the piston as the piston is moved into the disposable unit by the stepper motor. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A peritoneal dialysis system comprising:
-
a hardware unit including (a) a piston having a piston head, (b) at least one vacuum source, (c) a controller including at least one processor and memory device programmed to control the vacuum source, and (d) a video monitor operating with a touch screen to enable a user to send and receive information to and from the controller; a door connected to the hardware unit, the door including a cavity; a disposable unit received by the hardware unit, the disposable unit including (i) a flexible membrane defining a portion of a pump chamber, the pump chamber received by the door cavity and (ii) a dialysis fluid opening enabling dialysis fluid to be pulled into the pump chamber that includes the portion of the flexible membrane; and wherein the controller is programmed to receive information from the user via the video monitor and the touch screen and process the information using the at least one processor and memory device, such that when the pump chamber of the disposable unit is received by the cavity, the at least one vacuum source is controlled to apply a vacuum to the membrane of the disposable unit at the pump chamber to draw the membrane to the piston head. - View Dependent Claims (20)
-
Specification