Medical apparatus 10, 310, and method for orienting and guiding a medical implement 19. The mechanical mechanism comprises a first mechanism portion 12 and a second mechanism portion 14. The first mechanism portion 12 includes a contact point 154 for disposition on a selected emplacement EMPL on a portion of a body BDY, and the second mechanism portion 14 includes an operation module 16 for guidance and support of the medical implement 19. The mechanical mechanism 11 permits displacement of a contact element 151 and of an operation module 16 relative to each other in bidirectional motion of translation along a segment of a straight line, and maintains the medical implement 19 in permanent aim at the selected emplacement EMPL. The operation module 16 also supports an implement guide 17 for support an implement drive 18 which includes a motorized drive for operating medical implements 19 coupled thereto.
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