Medical fluid pump valve integrity test methods and systems
First Claim
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1. A valve integrity method for a medical fluid pump placed in line with an inlet valve and an outlet valve, the method comprising:
- (a) pumping fluid into the medical fluid pump while the outlet valve is closed and the inlet valve is open;
(b) closing the inlet valve while the outlet valve is closed;
(c) attempting to pump fluid out of the medical fluid pump while the inlet valve and the outlet valve are closed by applying a pressure that is less than a maximum possible pressure so as not to damage the medical fluid pump; and
(d) determining that at least one of the valves is leaking if a change in medical fluid volume within the medical fluid pump is detected.
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Abstract
A valve integrity method for a medical fluid pump includes pumping fluid into the medical fluid pump while an outlet valve is closed and an inlet valve is open, closing the inlet valve while the outlet valve is closed, attempting to pump fluid out of the medical fluid pump while the inlet valve and the outlet valve are closed, and determining that at least one of the valves is leaking if a change in medical fluid volume within the medical fluid pump is detected.
187 Citations
20 Claims
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1. A valve integrity method for a medical fluid pump placed in line with an inlet valve and an outlet valve, the method comprising:
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(a) pumping fluid into the medical fluid pump while the outlet valve is closed and the inlet valve is open; (b) closing the inlet valve while the outlet valve is closed; (c) attempting to pump fluid out of the medical fluid pump while the inlet valve and the outlet valve are closed by applying a pressure that is less than a maximum possible pressure so as not to damage the medical fluid pump; and (d) determining that at least one of the valves is leaking if a change in medical fluid volume within the medical fluid pump is detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A medical fluid machine comprising:
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a medical fluid pump; an inlet valve and an outlet valve each in fluid communication with the medical fluid pump; a volume measuring device configured to detect a medical fluid volume within the medical fluid pump; and a controller configured to (i) pump medical fluid into the medical fluid pump with the outlet valve closed and the inlet valve open, (ii) close the inlet valve while the outlet valve is closed;
(iii) attempt to pump medical fluid out of the medical fluid pump while the inlet valve and the outlet valve are closed by applying a pressure that is less than a maximum possible pressure so as not to damage the medical fluid pump; and
(iv) determine, via the volume measuring device, that at least one of the valves is leaking if a change in medical fluid volume within the medical fluid pump is detected. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification