A device for the continuous subcutaneous infusion of liquid active substances with improved reliability and more precise metering of the time-related

摘要

A device for the continuous subcutaneous infusion of liquid active substances, consisting essentially of a programmable metering pump is located outside the body with an active ingredient container, a pressure sensor, an electronic circuit, a catheter tube and a needle, characterised in that at the end of the catheter tube 5 directly in front of the needle 6 one of the electronics 4 of the metering pump 1 controlled additional pump 7 is located, which with its higher pressure is in the position of the active substance directly by the needle 6 to be injected subcutaneously, if the pressure of the metering pump 1 is no longer sufficient, and for this purpose, a termination of the medication is imminent, often accompanied by the error message: ‘ catheter is blocked ", or analogously.