Patent ID: 8795217

Claim:
An access disconnection system comprising: a blood treatment machine including a blood treatment machine housing; a member separate from the blood treatment machine housing; an arterial line, a portion of the arterial line positioned on the member; a venous line, a portion of the venous line positioned on the member; a transmitter positioned on the member and configured to transmit a wave in one of the arterial or venous lines when connected to a patient; a receiver positioned on the member and configured to receive the wave from the other of the arterial or venous lines when connected to the patient; and electronic circuitry positioned on the member, the electronic circuitry coupled to at least one of the transmitter and receiver, the electronic circuitry configured to send a disconnection output to the blood treatment machine, the disconnection output indicative of a change in the wave received by the receiver from the transmitter sufficient to expect that an access site disconnection of one of the arterial or venous lines has occurred.