Patent ID: 7922899

Claim:
Medical apparatus comprising: at least a user interface for enabling setting of a plurality of parameters pertinent to operation of said apparatus or pertinent to a treatment to be performed by said apparatus, the user interface including at least a screen for visualization of values of said parameters, a control system within said apparatus for controlling operation of said medical apparatus and responsive to actions by a user on said user interface, said control system including: a main control unit, connected to the user interface, a first memory connected to the main control unit, a video memory also connected to the main control unit for storing data corresponding to images visualized on said screen, said main control unit being programmed for executing the following steps: allowing setting of a new value for at least a parameter; displaying the new value on a region of the screen; storing the new value in the first memory; capturing from the video memory data representative of said region of the screen where at least the value of the entered parameter is being graphically displayed; verifying from said representative data if the value graphically displayed in said region corresponds to the value stored in said first memory; wherein said verification step includes the steps of converting the value entered in the first memory in data graphically representing said value; comparing the data graphically representing the value entered in the first memory to said data representative of the region of the screen where the value of the entered parameter is being displayed.