Dialysis medical system with a portable control unit
First Claim
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1. A dialysis medical system comprising:
- a dialysis medical machine;
a control unit;
a portable computing device that is configured to wirelessly communicate with the control unit;
a medical fluid tube connected to the dialysis medical machine;
an ultrasonic transmitter positioned adjacent to the medical fluid tube;
an ultrasonic receiver positioned adjacent to the medical fluid tube configured to receive one or more signals in response to the activation of the ultrasonic transmitter; and
a computer storage medium encoded with computer program instructions that when executed by the dialysis medical system, cause the control unit to perform operations comprising;
controlling repetitive activation of the ultrasonic transmitter, wherein controlling repetitive activation of the ultrasonic transmitter comprises, for each repetition;
activating the ultrasonic transmitter for a first period; and
deactivating the ultrasonic transmitter for a second period;
for each repetition, comparing a signal received from the ultrasonic receiver during the activation of the ultrasonic transmitter for the first period to a threshold value; and
determining presence of fluid in a portion of the medical fluid tube if the signal received from the ultrasonic receiver satisfies the threshold value for at least two consecutive repetitions, wherein;
for a first repetition, the signal received from the ultrasonic receiver during the activation of the ultrasonic transmitter for the first period is compared to a first threshold value; and
for a second repetition, the signal received from the ultrasonic receiver during the activation of the ultrasonic transmitter for the first period is compared to a second threshold value if the first threshold value was satisfied and compared to a third threshold value if the first threshold value was not satisfied.
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Abstract
This disclosure relates to detecting fluid in medical tubing. In certain aspects, a method is performed by a data processing apparatus. The method includes controlling repetitive activation of the ultrasonic transmitter. The method also includes receiving a signal from the ultrasonic receiver during an activation of the ultrasonic transmitter. The method also includes determining that fluid is absent or present in a portion of the medical fluid tube based on a comparison between the signal and a threshold value.
109 Citations
24 Claims
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1. A dialysis medical system comprising:
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a dialysis medical machine; a control unit; a portable computing device that is configured to wirelessly communicate with the control unit; a medical fluid tube connected to the dialysis medical machine; an ultrasonic transmitter positioned adjacent to the medical fluid tube; an ultrasonic receiver positioned adjacent to the medical fluid tube configured to receive one or more signals in response to the activation of the ultrasonic transmitter; and a computer storage medium encoded with computer program instructions that when executed by the dialysis medical system, cause the control unit to perform operations comprising; controlling repetitive activation of the ultrasonic transmitter, wherein controlling repetitive activation of the ultrasonic transmitter comprises, for each repetition; activating the ultrasonic transmitter for a first period; and deactivating the ultrasonic transmitter for a second period; for each repetition, comparing a signal received from the ultrasonic receiver during the activation of the ultrasonic transmitter for the first period to a threshold value; and determining presence of fluid in a portion of the medical fluid tube if the signal received from the ultrasonic receiver satisfies the threshold value for at least two consecutive repetitions, wherein; for a first repetition, the signal received from the ultrasonic receiver during the activation of the ultrasonic transmitter for the first period is compared to a first threshold value; and for a second repetition, the signal received from the ultrasonic receiver during the activation of the ultrasonic transmitter for the first period is compared to a second threshold value if the first threshold value was satisfied and compared to a third threshold value if the first threshold value was not satisfied. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification