Patent ID: 8696511
Filing Date: 2014-04-15
Classification: A61B,B25B

Abstract:
1. A surgical instrument for applying a rotational force to a structural element comprising: a housing; an input member partially positioned in the housing and including an input portion that extends outward from the housing, the input member being rotatable relative to the housing, the input member further including a sun gear; an elongated output shaft partially positioned in the housing and including a length to extend outward from the housing and include a receptacle configured to engage with the element, the elongated output shaft being rotatable relative to the housing; a planetary gear system positioned in the housing and including a plurality of planet gears that engage with and rotate around the sun gear, and an annular ring gear that extends around the sun gear and the plurality of planet gears and includes interior teeth that engage with the plurality of planet gears, the plurality of planet gears being rotatable relative to the housing and the ring gear being non-rotatable relative to the housing; the input member, the output shaft, and the planetary gear system being operatively connected for rotation of the input member in a first rotational direction resulting in rotation of the output shaft in the first rotation direction.