Patent ID: 7651486

Claim:
A surgical device for injecting a fluid and/or for removing tissue cells from a biological structure, comprising (a) a supply device ( 1 ) including a vacuum pump ( 3 ), and a supply pump ( 5 , 7 )for injecting a separation fluid or a process fluid and for suctioning off separated or dissolved tissue cells and/or the separation fluid or the process fluid, and (b) a surgical hand piece ( 2 ) with an inner injection cannula ( 19 ) and an outer suction tube ( 23 ), both of which form an annular suction channel in the region of the surgical hand piece ( 2 ), wherein the outer suction tube ( 23 ) is adapted to be placed on the injection cannula ( 19 ) and to be secured to the surgical hand piece ( 2 ), and wherein the injection cannula ( 19 ) includes a front nozzle opening ( 20 ) and the suction tube ( 23 ) includes a plurality of suction bores ( 24 ) distributed along its periphery, and wherein the surgical hand piece ( 2 ) is provided with a handle ( 14 ) and the suction tube ( 23 ) is configured with a handle ( 21 ″) to form a complementary part, wherein the outside dimensions of the handle ( 14 ) of the surgical hand piece ( 2 ) are adapted to those dimensions of the handle ( 21 ″) of the suction tube ( 23 ), and wherein the handle ( 14 ) of the surgical hand piece ( 2 ) is configured to be connectable with the handle ( 21 ″) of the suction tube ( 23 ) or optionally with another complimentary part that also includes an adapted handle ( 21 , 21 ′), wherein the suction tube ( 23 ) has a front axial bore ( 25 ) that matches with clearance the diameter of the injection cannula ( 19 ) and the length of the suction tube ( 23 ) is shorter than the length of the injection cannula ( 19 ) by a sufficient amount, so that the tip of the injection cannula ( 19 ) with the nozzle opening ( 20 ) protrudes by a sufficient length.