Tensioning Instrument

摘要

A bone plate system for securing a plurality of bones is provided including a plate member, a locking device of the bone plate, and a surgical cable having a trailing end for being connected to the bone plate and a leading end for being advanced around the bones and into the locking device. The surgical cable may be tensioned to approximate the bones, urge the bones together, and seat the bone plate against the bones. The locking device may be reconfigured to a locked configuration to fix the bone plate to the surgical cable. The bone plate further includes a plurality of throughbores for receiving bone anchors that rigidly fix the bone plate to the bones. The bone plate system utilizes the tensile strength of the surgical cable and the rigid fixation between the bone anchors and the bone plate to resist relative movement of the bones.

主权项

1. An instrument for tensioning a surgical cable, the instrument comprising:
a rotary tensioner operable to have surgical cable wound up thereon; a ratchet assembly that permits turning of the rotary tensioner in a wind up direction and resists turning of the rotary tensioner in a pay out direction; and a drive operably connected to the rotary tensioner and having a handle configured to be turned in a first rotary direction to cause the drive to turn the rotary tensioner in the wind up direction and wind surgical cable onto the rotary tensioner and configured to be turned in a reverse, second rotary direction to operatively disengage the drive from the ratchet assembly and permit the rotary tensioner to turn in the pay out direction.