A four-way endoscope steering mechanism, comprising:
- a plurality of hollow steering members, each having a plurality of hollow positioning portions and a plurality of connecting portions, and each connecting portion including a first connecting portion, a second connecting portion, a third connecting portion and a fourth connecting portion, and the first connecting portion and the second connecting portion being arranged opposite to each other and disposed on a side of the hollow steering member, and the third connecting portion and the fourth connecting portion being arranged opposite to each other and disposed on the other side of the hollow steering member, and the third connecting portion forming an angle with respect to the first connecting portion, and the fourth connecting portion forming another angle with respect to the second connecting portion;
- a plurality of two-way flexible plastic members, each having a first two-way flexible plastic member and a second two-way flexible plastic member, and the two-way flexible plastic member being partially bent, and an end of the first two-way flexible plastic member being coupled to the first connecting portion, and the other end of the first two-way flexible plastic member being coupled to the third connecting portion adjacent to the other hollow steering member, and an end of the second two-way flexible plastic member being coupled to the second connecting portion, and the other end of the second two-way flexible plastic member being coupled to the fourth connecting portion adjacent to another hollow steering member, so that the two-way flexible plastic members on a side of the hollow steering member are perpendicular to the two-way flexible plastic members on the other side of the hollow steering member;
- a plurality of guiding wire members, passed and installed in the plurality of corresponding hollow positioning portions;
- and
- a plurality of densely wound coils, coupled to an end of a steering module, and the steering module being formed by arranging and coupling the plurality of two-way flexible plastic members to the plurality of hollow steering members respectively, and the densely wound coil being extended in an opposite direction of the steering module from an end of the steering module and sheathed on the corresponding guiding wire member;
- thereby, when one of the guiding wire members is pulled, the guiding wire member drives the plurality of corresponding hollow steering members to bend the plurality of two-way flexible plastic members on a side of the hollow steering member in a first direction or a second direction, or drives the plurality of two-way flexible plastic members on the other side of the hollow steering member to bend in a third direction or a fourth direction to turn the steering module.