Abstract: A biopsy needle assembly as subject of the present invention for taking tissue sample comprises an outer cannula having a front with a cutting edge end and a back end; a hollow biopsy needle located inside and coaxially with the cannula, having an inner cavity. The front end if the needle is provided with a tissue receiving means cooperating with the cutting edge of cannula; an inner needle having located inside and coaxially with the hollow biopsy needle; a vacuum unit coupled to the hollow biopsy needle; the cannula and hollow biopsy needle being mutually axially moveable. The vacuum unit is adapted to create a lowered air pressure in the inner cavity when the front end of the hollow biopsy needle is axially moved away from the front end of the inner needle. The vacuum unit is located uniaxially with the cannula and hollow biopsy needle. The invention further relates to a device for taking a tissue sample by means of a biopsy needle assembly as subject of the present invention.

Abstract: A medical tool arrangement according to the present invention comprises a hand-held casing. The hand-held casing comprises a tool assembly having a plurality of tools. The hand-held casing further comprises a driving mechanism for moving the plurality of tools independently of each other. The medical tool arrangement is for use with a mechanical energy source remote from the hand-held casing. The mechanical energy source is couplable to the driving mechanism of the hand-held casing by means of at least a first and a second mechanical energy transferring means. At least one of the first, and second mechanical energy transferring means has a length and an axial direction and comprises an energy transferring medium suitable for transferring mechanical energy by making a translational movement longitudinally along its axial direction.