Patent attributes
A surgical tool includes: a treatment section that treats an object to be treated; a power source that generates a power to operate the treatment section; a traction section connected to the treatment section and the power source; a switching section that switches a transmission state of the power from the power source to the traction section between a state in which the power can be transmitted and a state in which the power cannot be transmitted; and a tension-applying section that has a pulley and applies a predetermined initial tension to the traction section by applying a power to the pulley in the state in which the power cannot be transmitted, wherein the traction section is hung on the pulley via the power source from the treatment section and is connected to the treatment section via the power source.