| 摘要 |
A urological resectoscope is disclosed, having a tubular shaft ( 1 ), through which an optical system ( 2 ) and a longitudinally moveable instrument carrier ( 5 ) pass. The optical system ( 2 ) is supported with respect to the tubular shaft ( 1 ) at a spacing from the proximal end of the tubular shaft ( 1 ) with a support device ( 9, 12 ). The carrier ( 5 ) is positioned with a radial positioning device ( 10, 15 ) and a circumferential angular positioning device ( 11, 12 ). The support device ( 12, 18, 18' ) is so arranged adjacent to the optical system ( 2 ) in the region in which the carrier ( 5 ) extends, that it supports the optical system ( 2 ) with respect to the tubular shaft ( 1 ) with a two point support system and imparts lateral guidance to the carrier ( 5 ) in the circumferential angular direction.
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