Automated dialysis pumping system
DCFirst Claim
1. A peritoneal dialysis system comprising:
- a hardware unit, the hardware unit including a pump actuator including a contact surface;
a disposable unit received by the hardware unit, the disposable unit having a moveable membrane operable with the pump actuator, the pump actuator moveable towards and away from the disposable unit; and
the hardware unit and disposable unit configured to hold a negative pressure between the pump actuator and the moveable membrane of the disposable unit, the negative pressure causing the moveable membrane to contact and conform to a shape of the contact surfaces, so as to follow the pump actuator as the actuator is moved away from the disposable unit, the pump actuator and membrane positioned relative to each other such that the membrane contacts and moves with the pump actuator as the actuator is moved into the disposable unit.
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Abstract
A peritoneal dialysis system includes: (i) a hardware unit, the hardware unit including a pump actuator; (ii) a disposable unit received by the hardware unit, the disposable unit having a moveable membrane operable with the pump actuator, the pump actuator moveable towards and away from the disposable unit; and (iii) the hardware unit and disposable unit configured to hold a negative pressure between the pump actuator and the moveable membrane of the disposable unit, the negative pressure causing the moveable membrane to follow the pump actuator as the actuator is moved away from the disposable unit, the pump actuator and membrane positioned relative to each other such that the membrane moves with the pump actuator as the actuator is moved into the disposable unit.
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Citations
20 Claims
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1. A peritoneal dialysis system comprising:
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a hardware unit, the hardware unit including a pump actuator including a contact surface; a disposable unit received by the hardware unit, the disposable unit having a moveable membrane operable with the pump actuator, the pump actuator moveable towards and away from the disposable unit; and the hardware unit and disposable unit configured to hold a negative pressure between the pump actuator and the moveable membrane of the disposable unit, the negative pressure causing the moveable membrane to contact and conform to a shape of the contact surfaces, so as to follow the pump actuator as the actuator is moved away from the disposable unit, the pump actuator and membrane positioned relative to each other such that the membrane contacts and moves with the pump actuator as the actuator is moved into the disposable unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A peritoneal dialysis system comprising:
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a hardware unit, the hardware unit including a pump actuator; a disposable unit received by the hardware unit, the disposable unit having a moveable membrane operable with the pump actuator, the pump actuator moveable towards and away from the disposable unit; and a sealing diaphragm positioned so as to at least partially form a sealed area between the pump actuator and the moveable membrane of the disposable unit, the sealed area allowing a negative pressure to be applied between the pump actuator and the moveable membrane of the disposable unit, the negative pressure causing the moveable membrane to follow the pump actuator as the actuator is moved away from the disposable unit. - View Dependent Claims (12, 13, 14)
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15. A peritoneal dialysis system comprising:
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an enclosure including a hardware unit that houses a pump actuator and a door having a recessed area capable of receiving at least a portion of the pump actuator, the recessed area forming at least a portion of a pump chamber; a disposable cassette received between the hardware unit and the door; and the cassette including a flexible membrane configured to be drawn into contact with the pump actuator by a negative pressure, the pump actuator operable to move the flexible membrane within the portion of the pump chamber formed by the recessed area of the door. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification