| 摘要 |
An exchange solution reservoir (11) and means (13) of evacuating the polluted solution are connected either directly to a patient (P) for peritoneal dialysis, or to an extra-corporeal circuit (1, 2, 3, 4) which is connected to the patient for extra-corporeal blood purification. A control module (15) includes calculators (15a, 15b) to operate the flow controllers for either process <??>An introduction pipe (5) for the exchange solution is connected at one end to an exchange solution reservoir and contains a flow controller (6) to manage the circulation of the exchange solution in the introduction pipe and in an evacuation pipe (7) for the polluted solution. Means of evacuating the polluted solution are placed at one end of the evacuation pipe which contains a flow controller (8) to manage the circulation of the polluted solution in the evacuation pipe. The extracorporeal circuit comprises an extraction pipe (1), a return pipe (3), means (4) of purification placed between the extraction and return pipes, and a flow controller (2) to maintain circulation. The extracorporeal circuit also includes a specific element or a single needle element which has at least 3 connectors and which allows the circuit to be connected to a single site on the patient with either the introduction and evacuation pipes or the extracorporeal circuit to be connected to the free ends. The circuit carries blood and exchange solution to and from the body from a single site or from two separate sites on the patient. Controllers (20, 21) on the pipes in the extracorporeal circuit ensure introduction/return cycles of blood or exchange solution and an expansion chamber (22) on the extraction pipe fills during the extraction cycle and empties during the return cycle. The calculators control circulation of blood in the extracorporeal circuit at a flow less than that used by the vascular access obtained with catheters or fistules to realize an ultrafiltration to extract the blood during a single peripheral vascular access and returning the blood plasma to the patient immediately through the purification device. The exchange solution reservoir is connected to the means of evacuation by a linking pipe or are formed from a single component to allow the polluted solution to be recirculated. The device includes means of making the exchange solution continuously and means of cleaning the purification device and pipework by injecting a cleaning substance and a rinsing substance with control and safety devices. |
