Steerable flexible medical device

The invention discloses a steerable flexible medical instrument, such as biopsy forceps, high-frequency electric scalpels, soft endoscopes and the like. The flexible medical instrument comprises an operation part, an insertion part and a bending part, the operation part controls bending of the bending part through a plurality of strands of actuating ropes, the operation part comprises a shell, a rope end fixing piece, an actuating rope pulling piece and a driving device, the driving device drives the actuating rope pulling piece to pull the actuating ropes, and the rope end fixing piece is fixed to the shell. And the bending direction of the far end is consistent with the movement direction of the driving device, so that the flexible medical instrument conforms to the intuition of people, and is convenient to operate. 本发明公开了一种可操纵柔性医疗器械，例如活检钳、高频电手术刀、软性内窥镜等。所述柔性医疗器械包括操作部、插入部和弯曲部，所述操作部通过多股致动绳操纵所述弯曲部的弯曲，所述操作部包括壳体、绳端固定件、致动绳牵动件和驱动装置，驱动装置驱动致动绳牵动件来牵动致动绳，进而操纵柔性医疗器械的远端的弯曲，远端的弯曲方向与驱动装置的运动方向一致，符合人的直觉，便于操作。