| 摘要 |
<p>The invention relates to the field of technical medical devices like dialysis machines. The invention is based on the improvement of a technical medical device in such way that operator inputs are more convenient and more reliable via a touchscreen display. The inventive technical medical device therefore comprises a touchscreen having two redundant finger-position sensors. At least one of these sensors may comprise additional piezoelectric elements, which can modify at least partial areas of the touchscreen such that they are differentiated from their surrounding areas by an elevation, a recess, a vibration or a change in the surface roughness sensed, and it also comprises a control unit for doing so. A control unit differentiates intentional and unintentional operating entries, and in the event of failure of the visual display device of the touchscreen display ensures at least a restricted operability of the touchscreen display.</p> |
