The disclosure provides a surgical apparatus comprising: a steerable member that is bendable and comprises a plurality of bending segments with channels therein； and a plurality of bending actuation wires that are arranged to pass through the steerable member and cause the steerable member to bend, the steerable member comprising at least one outwardly opening lumen through which the bending actuation wires pass.本發明提供了一種手術設備，包含：一可操縱方向構件，該可操縱方向構件為可彎曲的，並且包含具有通道於其中的複數個彎曲段；以及複數個彎曲致動導線，其佈置成穿過該可操縱方向構件並致使該可操縱方向構件彎曲，該可操縱方向構件包含至少一個向外開口管腔，該等彎曲致動導線穿過其中。
