Abstract: Disclosed is an extracorporeal blood circulation device including a blood circulation circuit including a blood extraction line and a return line, a blood circulator in the circulation circuit and a control unit including a calculator arranged determining at least one parameter, recording it in a memory, and then comparing the standard value of the parameter with the recorded value. The device also includes a source of solution for liquefying blood clots, a device injecting and conveying the liquefaction solution in the circulation circuit, the control unit including a driver for the injector of the liquefaction solution. The control unit is arranged to actuate the driver when the value is exceeded, meaning that at least one clot has formed, the driver being arranged so that the liquefaction solution is present in the circulation circuit in an amount and for a time determined to be sufficient for liquefying the clot formed.

Abstract: Disclosed is an assembly for detecting the presence of a gas in a liquid contained or circulating in a conduit including an element for supporting the conduit and a sensor allowing the transmission and reception of acoustic or light waves. The sensor is arranged on the support of the conduit facing the one and the same side of the conduit and the support element includes a waveguide capable of routing the wave transmitted by the transmitter of the sensor to the receiver of the sensor.

Abstract: A blood purification device includes a loop for extracorporeal circulation of blood consisting of an element (1) that extracts plasma from the blood and elements for circulating the thus extracted plasma in elements for purifying the plasma (3, 4, 5, 6 or 8). The device includes in addition a column (2) in the blood circulation loop.

Abstract: The tubing includes an open-loop extracorporal circulation duct that has two parts, whereby one part extracts the blood to be purified and the other returns the purified blood; at least one duct connects at least one of the parts to a substitution solution source; a bubble trap disposed along the loop; a duct for evacuating the rejected product and provided with a segment tubing; and connecting elements for detachable interconnection of the respective extremities of the open-loop extracorporal circulation tubing to form a closed loop. The duct for evacuating the rejected product includes downstream from the segment tubing a blood detector and a connecting duct that extends between the downstream extremity of the segment tubing and the bubble trap.

Abstract: An extra-corporeal blood purification device includes a blood filter, and elements for measuring at least one parameter affected by filter resistance to liquid flow, elements for determining at least a threshold value of the parameter, elements for comparing the parameter with the threshold value, exchange control elements for calculating the distribution between the respective flow rates through connecting ducts, capable of reducing the difference between the value of the measured parameter and the threshold value.