INJECTION DEVICE WITH ELECTRONIC PRESENTATION FOR SET DOSES

PROBLEM TO BE SOLVED: To provide an injection device by which unreliable electrical or mechanical components are detected before a wrong dosing of medicine injected by the device. SOLUTION: The injection device has signal generators 11, 12, 13, and 14 connected to operation devices 8, 3, 5, and 4 of the device to give off signals representing operative condition of the device. The signals are sent to an electronic circuit which controls presentation of the operational condition of the device to present operational conditions, which are defined as not allowed, as error indications by switching off the display presenting the operational condition of the device. The number of signals from the respective generators is counted. When a number of operations exceeds a preset number of the signal generator, the number is interpreted as presenting a non-allowed operational condition. COPYRIGHT: (C)2007,JPO&INPIT