BONE EXPANDER DEVICE FOR PERCUTANEOUS FRACTURE REDUCTION

摘要

A bone expander device for percutaneous fracture reduction is provided to constantly maintain an expanding level of a tube by adjusting a pressing level of a pusher pin. A pin penetrating hole(10) is formed on a front end of a body(12), and a gear unit is mounted in the body through the pin penetrating hole. A shaft penetrating hole is formed in the body where a shaft of a handle(19) is fitted. The gear unit has three gears to transmit operation force of the handle to a block moving member. A tube(20) is fitted on a second support pin(14), and a pressing pin(21) is fitted on the second support pin. A push block penetrates a first support pin. A pulling member is composed of one sprocket and one pulley.