AUTOMATED DIALYSIS SYSTEM INCLUDING A PISTON AND VACUUM SOURCE
First Claim
1. A peritoneal dialysis system comprising:
- a hardware unit including a piston and at least one vacuum source;
a door connected to the hardware unit, the door including a cavity, the cavity having a diameter;
the hardware unit further including a structure positioned opposite the door, the structure defining an aperture;
a disposable unit including first and second fluid receiving membranes, the disposable unit disposed between the structure and the door;
the at least one vacuum source operable to apply a vacuum to at least one of the first and second membranes of the disposable unit;
the piston, at least a portion of which moves through the aperture, in operation contacting one of the membranes, the piston including a piston head having a diameter smaller than the diameter of the cavity in the door; and
a dialysis fluid opening enabling dialysis fluid to be pulled in between the first and second membranes.
1 Assignment
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Accused Products
Abstract
A peritoneal dialysis system includes a hardware unit including a piston and at least one vacuum source; a door connected to the hardware unit, the door including a cavity, the cavity having a diameter; the hardware unit further including a structure positioned opposite the door, the structure defining an aperture; a disposable unit including first and second fluid receiving membranes, the disposable unit disposed between the structure and the door; the at least one vacuum source operable to apply a vacuum to at least one of the first and second membranes of the disposable unit; the piston, at least a portion of which moves through the aperture, in operation contacting one of the membranes, the piston including a piston head having a diameter smaller than the diameter of the cavity in the door; and a dialysis fluid opening enabling dialysis fluid to be pulled in between the first and second membranes.
42 Citations
23 Claims
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1. A peritoneal dialysis system comprising:
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a hardware unit including a piston and at least one vacuum source; a door connected to the hardware unit, the door including a cavity, the cavity having a diameter; the hardware unit further including a structure positioned opposite the door, the structure defining an aperture; a disposable unit including first and second fluid receiving membranes, the disposable unit disposed between the structure and the door; the at least one vacuum source operable to apply a vacuum to at least one of the first and second membranes of the disposable unit; the piston, at least a portion of which moves through the aperture, in operation contacting one of the membranes, the piston including a piston head having a diameter smaller than the diameter of the cavity in the door; and a dialysis fluid opening enabling dialysis fluid to be pulled in between the first and second membranes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A peritoneal dialysis system comprising:
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a hardware unit including (a) a piston having a piston head and (b) at least one vacuum source; a door connected to the hardware unit, the door including a cavity, the cavity having a diameter larger than a diameter of the piston head; a disposable unit received by the hardware unit, the disposable unit including first and second fluid receiving membranes; a dialysis fluid opening enabling dialysis fluid to be pulled in between the first and second membranes; and wherein in operation (i) the disposable unit is positioned relative to the door such that the first membrane resides within the cavity, (ii) the at least one vacuum source applies a vacuum to the second membrane of the disposable unit, and (iii) the piston contacts the second membrane. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A peritoneal dialysis system comprising:
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a hardware unit including (a) a piston having a piston head and (b) at least one vacuum source; a door connected to the hardware unit, the door including a cavity; a disposable unit received by the hardware unit, the disposable unit including first and second fluid receiving members defining a pump chamber; a dialysis fluid opening enabling dialysis fluid to be pulled between the first and second members into the pump chamber; and wherein in operation (i) the pump chamber of the disposable unit is positioned relative to the door such that the first member resides upwardly within the cavity, (ii) the at least one vacuum source applies a vacuum to the second member of the disposable unit at the pump chamber, and (iii) the piston contacts the second member at the pump chamber. - View Dependent Claims (20, 21, 22, 23)
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Specification