Patent ID: 9089654
Filing Date: 2015-07-28
Classification: A61M

Abstract:
1. A blood treatment machine including: an arterial line; a venous line; and an access disconnection system including: (i) a transmitter coupled to one of the arterial line or the venous line and configured to transmit a wave in said one of the arterial line or the venous line towards a patient when connected to the patient, (ii) a receiver coupled to said one of the arterial line or the venous line and configured to receive a reflection of the wave within said one of the arterial line or the venous line when returning from the patient, and (iii) electronic circuitry communicating with at least one of the transmitter and the receiver, the electronic circuitry configured to send a disconnection output indicative of a change in the reflected wave received by the receiver sufficient to expect that an access disconnection of said one of the arterial line or the venous line has occurred.