| 摘要 |
A ureteroscope ( 1 ) fitted with a stem ( 2 ) which exhibits at least at its distal end zone a substantially oval cross-section and which comprises a rounded beak ( 6 ) projecting at the distal end of the cross-section in the direction of the longer transverse axis ( 7 ), is characterized in that the beak ( 6 ) is asymmetrical to the transverse axis ( 7 ) in a manner that its center line ( 8 ) deviates increasingly from the transverse axis ( 7 ) as the radius increases.
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