The invention relates to a manually openable clamping holder (1) for releasably fixing a single-use medical device to a medical treatment apparatus. The clamping holder (1) has a sensor (9) for detecting the position of the clamping jaws (2, 3) of the clamping holder (1). With the clamping holder (1) the correct equipping of a medical treatment apparatus with the appropriate single-use device can be monitored economically and with simple operation.
