Operating device for a stylet unit

A device for manipulating a stylet unit having a stylet sleeve and a stylet movable inside said stylet sleeve, for positioning an electrode cable in a body cavity, said stylet sleeve having a proximal end and said stylet having a proximal end, and said stylet having a proximal section which projects beyond said proximal end of said stylet sleeve, said device comprising:

• a first part and a second part being in contact with each other and relatively movable with respect to each other at an interface region, said first part having a first part surface in said interface region and said second part having a second part surface in said interface region;
• one of said first part and said second part being adapted for connection to said proximal end of said stylet and the other of said first part and said second part being adapted for connection to said proximal end of said stylet sleeve, so that when said first and second parts are moved relative to each other, said proximal region of said stylet is caused to beyond said proximal end of said stylet sleeve;
• and
• a groove disposed in one of said first part surface and said second part surface adapted to enclose said proximal region of said stylet for supporting and guiding said proximal region of said stylet outside of said stylet sleeve, said groove being disposed in said interface region.