Patent ID: 8568349
Filing Date: 2013-10-29
Classification: A61M

Abstract:
1. An injection device for injecting a fluid into an organism, the injection device comprising: a fluid providing section including a container for storing the fluid and a pump unit for supplying the fluid, the pump unit comprising a displacement member, a driven member and a driving unit; and a fluid injecting section for injecting the fluid provided by the fluid providing section into the organism and a catheter means, wherein the fluid injecting section is provided with a pressure recognition arrangement for detecting at least one of a pressure increase and a pressure loss in the fluid injecting section, the pressure recognition arrangement comprising a fluid pressure sensor, a control unit, a permanent memory, and at least one control valve, the at least one control valve is a cracking valve that opens the at least one control valve above a cracking pressure, permitting flow through the at least one control valve, and closes the at least one control valve below the cracking pressure, wherein the control unit is configured to extrapolate a time series of measured pressure values in the fluid injecting section and to send a signal to an alarm device if the extrapolated values attain a certain relation to at least one given reference pressure value.