| 主权项 |
1. A surgical hand piece comprising:
a connecting body having a distal end; a work tip having a proximal hub through which extend at least first and second tubes aligned side by side and adjacent to each other, said connecting body having first and second external openings, each of said tubes having a proximal end connected to separate passages in said connecting body leading to the external openings connectable to respective first and second fluid sources, said work tip being detachably connected to said connecting body distal end by a threaded collar (194) threaded on to threads at the distal end of said connecting body, wherein each of said first and second tubes has a lumen that is to receive or discharge a fluid at its proximal end from one of first and second fluid sources that are respectively irrigation and aspiration fluids, the lumen of each of said first and second tubes being separate and spaced apart, and each said tube having an opening at its distal end through which the fluid received at or discharged from the proximal end of the respective lumen of each said tube exits from or enters the tube, with each said tube distal end opening being separate, independent of, spaced from and without being in communication with the distal end opening of the other tube; and wherein the lumens of said work tip and the first and second fluid sources are rotatable with respect to each other so that in one operative position the first tube is in fluid communication with the first fluid source and the second tube is in fluid communication with the second fluid source, and in another operative position the first tube is in fluid communication with the second fluid source and the second tube is in fluid communication with the first fluid source. |
