ACCESS DISCONNECT DETECTION SYSTEM
First Claim
1. An access site disconnection detection method comprising:
- sending a radio-frequency transmission;
receiving the radio-frequency transmission to establish a baseline level;
repeating the sending and the receiving of the radio-frequency transmission at least once; and
sending a blood leakage detection signal if the at least one repeated radio-frequency transmission falls below the baseline level.
2 Assignments
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Accused Products
Abstract
An access site disconnection system and method are disclosed. Radio frequency transmitters and receivers are placed near an access site. When a patient receives dialysis treatment, wetness may arise from blood if the access needle becomes disconnected from the access site. Radio-frequency transmitters are mounted on or near gauze or other absorbent material placed adjacent the access site, as are radio-frequency receivers. After the sensors are placed, the dialysis machine and radio-frequency control circuit may be initialized or baselined, and dialysis treatment, such as hemodialysis, begun. If blood leaks from the access site, such as if the access needle is dislodged, the blood attenuates the radio frequency transmissions, which are detected by the receivers. A signal is sent to a controller or to an output device to raise an alert or sound an alarm.
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Citations
20 Claims
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1. An access site disconnection detection method comprising:
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sending a radio-frequency transmission; receiving the radio-frequency transmission to establish a baseline level; repeating the sending and the receiving of the radio-frequency transmission at least once; and sending a blood leakage detection signal if the at least one repeated radio-frequency transmission falls below the baseline level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An access site disconnection detection method comprising:
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sending a radio-frequency transmission; receiving the radio-frequency to establish a baseline level; repeating the sending and the receiving of the radio frequency transmission a plurality of times; and sending a blood leakage detection signal if the repeated radio-frequency transmissions fall below the baseline level a plurality of times. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. An access site disconnection detection method comprising:
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setting a baseline level for a radio-frequency transmission received by at least one radio-frequency receiver; sending a radio-frequency transmission from at least one radio-frequency transmitter; receiving the radio-frequency transmission by at least one radio-frequency receiver; and sending a blood leakage detection signal if the radio-frequency transmission sent by the at least one radio-frequency transmitter is received by the at least one radio-frequency receiver at a lower level than the baseline level. - View Dependent Claims (19, 20)
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Specification