| 摘要 |
A bipolar double-hinged instrument ( 1 ) has two forceps legs ( 3, 4 ), which are supported on a common forceps leg shaft ( 2 ) so that they can pivot (Pf 2 ), which are insulated electrically from each other, and which can pivot in opposite directions via respective toggle-lever elements ( 5, 6, 7, 8 ) and a connecting rod ( 11 ) that can move in a tubular shaft ( 9 ) in a longitudinal direction (Pf 1 ). The connecting rod ( 11 ) and a toggle-lever element ( 5 ) are connected to each other in an electrically conductive way, wherein the connecting rod ( 11 ) and the toggle-lever elements ( 5, 7 ) are supported on the connecting rod shaft ( 10 ), which is electrically insulated from the connecting rod ( 11 ) and the toggle-lever element ( 5 ), so that they can rotate. Between the connecting rod ( 11 ) and the toggle-lever element ( 7 ) there is at least one connecting rod insulating part electrically insulating the connecting rod ( 11 ) and the toggle-lever element ( 5 ) from the toggle-lever element ( 7 ). The second forceps leg ( 4 ) is connected at the forceps leg shaft ( 2 ) to the tubular shaft ( 9 ) in an electrically conductive way. On the forceps leg shaft ( 2 ), between the forceps legs ( 3, 4 ) there is at least one forceps leg insulating element ( 21, 22 ) electrically insulating the two forceps legs ( 3, 4 ) from each other.
|
