AUTOMATED DIALYSIS PUMPING SYSTEM USING STEPPER MOTOR
First Claim
1. A peritoneal dialysis system comprising:
- an enclosure;
a stepper motor housed by the enclosure;
a pump head in operable communication with the stepper motor; and
a disposable unit including at least one flexible membrane attached to a rigid piece, the enclosure configured to receive the disposable unit such that the stepper motor can move the pump head towards and away from the flexible membrane to cause, the flexible membrane to move outwardly with respect to the rigid piece as the pump head is moved away from the disposable unit, and the flexible membrane to move inwardly with respect to the rigid piece as the pump head is moved towards the disposable unit.
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Accused Products
Abstract
A peritoneal dialysis system includes: (i) an enclosure; (ii) a stepper motor housed by the enclosure; (iii) a pump head in operable communication with the stepper motor; and (iv) a disposable unit including at least one flexible membrane attached to a rigid piece, the enclosure configured to receive the disposable unit such that the stepper motor can move the pump head towards and away from the flexible membrane to cause, (a) the flexible membrane to move outwardly with respect to the rigid piece as the pump head is moved away from the disposable unit, and (b) the flexible membrane to move inwardly with respect to the rigid piece as the pump head is moved away from the disposable unit.
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Citations
20 Claims
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1. A peritoneal dialysis system comprising:
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an enclosure;
a stepper motor housed by the enclosure;
a pump head in operable communication with the stepper motor; and
a disposable unit including at least one flexible membrane attached to a rigid piece, the enclosure configured to receive the disposable unit such that the stepper motor can move the pump head towards and away from the flexible membrane to cause, the flexible membrane to move outwardly with respect to the rigid piece as the pump head is moved away from the disposable unit, and the flexible membrane to move inwardly with respect to the rigid piece as the pump head is moved towards the disposable unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A peritoneal dialysis system comprising:
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an enclosure;
a stepper motor housed by the enclosure;
a rotational to translational conversion mechanism in operable communication with the stepper motor;
a pump head in operable communication with the rotational to translational conversion mechanism; and
the enclosure configured to receive the disposable a disposable unit, the disposable unit having a moveable membrane operable with the pump head, the stepper motor and the rotational to translational conversion mechanism in operable communication to move the pump head towards and away from the disposable unit, and wherein the moveable membrane of the disposable unit is positioned to follow the pump head as the head is moved towards the disposable unit. - View Dependent Claims (10, 11, 12, 13)
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14. A peritoneal dialysis system comprising:
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an enclosure;
a stepper motor housed by the enclosure;
a pump head in operable communication with the stepper motor;
a disposable unit operable with the enclosure, the disposable unit including a moveable membrane operable with the pump head, the stepper motor configured to move the pump head towards and away from the disposable unit; and
a position detection apparatus located to detect a position of the pump head relative to a reference position. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification