Surgical device for removing tissue cells from a biological structure
The invention allows an increase in scope of application of a surgical device wherein the operational handpiece is embodied in the form of two parts, one of which includes a handpiece with an injection cannula and the other being a complementary part. The complementary part includes a stabilization handle and can be placed onto the injection cannula in addition to being able to be fixed to the handpiece of the operational handpiece.
1. 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.
2. The surgical device according to claim 1 , wherein another complementary part comprises a stabilizing handle ( 21 ) for stabilizing the injection cannula ( 19 ).
3. The surgical device according to claim 1 , wherein another complementary part comprises a handle ( 21 ′) and an open stabilizing tube ( 22 ), wherein the inner diameter of the stabilizing tube ( 22 ) matches with clearance the outer diameter of the injection cannula ( 19 ) and the length of the stabilizing tube ( 22 ) 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.
4. The surgical device according to claim 1 , wherein for alternatively supplying the injection cannula ( 19 ) with different process fluids, the fluid jet unit of the supply device ( 1 ) is provided with one or more supply pumps ( 5 , 7 ), and with a switchable directional control valve ( 12 ).