A mount for being releasably received on a medical apparatus and for accommodating a device adapted for insertion inside the mount includes at least two side parts including a first side part and a second side part, at least the second side part or at least a portion thereof being configured so as to pass from a first position into a second position as a result of operational arrangement of the mount on the medical apparatus and/or by operational insertion of the device into the mount. In addition, a medical apparatus includes a like mount.