| 摘要 |
A bipolar tubular shaft instrument ( 1 ) has instrument legs ( 3 ) and ( 4 ), for the operation of which a pull- and/or push rod ( 6 ) is axially displaceable within a tube ( 7 ). These two parts are insulated relative to one another and are connected to current terminals ( 11 ) and ( 12 ). For electrically connecting the push rod, a plug pin ( 15 ) is provided which is displaceable relative to an opposing contact ( 14 ) and engaged therewith. The plug pin ( 15 ) is arranged on the push rod ( 6 ) neighboring the connecting joint ( 9 ) with the actuating handle ( 10 ) in generally in a direction of orientation and movement. Thus the contact remains in existence in spite of the movement, and is present in each case upon the instrument legs being closed.
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