Surgical instrument and method

A surgical system comprising:

• a bone fastener including a head and a shaft extending from the head, the head having a drive interface surface;
• and
• a surgical instrument including a shaft and a sleeve, the shaft of the surgical instrument including a shank, a drive interface extending from the shank and spaced apart arms disposed about the drive interface, the shank defining a longitudinal axis, the arms defining a collet that is expandable to receive the head, the sleeve comprising a stop extending perpendicular to the longitudinal axis, the shaft comprising a first thread that mates with a second thread of the sleeve such that rotation of the shaft of the surgical instrument relative to the sleeve translates the shaft of the surgical instrument relative to the sleeve to move the collet between a first orientation in which the arms are spaced apart by a first distance and a second orientation in which the arms are spaced apart by an increased second distance, the stop engaging surfaces of the arms that extends perpendicular to the longitudinal axis when the collet is in the first orientation to prevent translation of the shaft relative to the sleeve along the longitudinal axis in one direction, the shaft of the surgical instrument having a drive interface configured to engage the drive interface surface of the head.

A surgical system comprising:

• a bone fastener including a head and a shaft extending from the head, the head having a drive interface surface;
• and
• a surgical instrument including a shaft and a sleeve, the shaft of the surgical instrument including a shank, a drive interface extending from the shank and spaced apart arms disposed about the drive interface, the shank defining a longitudinal axis, the sleeve including a first stop surface extending transverse to the longitudinal axis, the head including a threaded portion attachable with the sleeve, the arms defining a collet that is expandable to receive the head, the shaft comprising a first thread that mates with a second thread of the sleeve such that rotation of the shaft relative to the sleeve translates the shaft relative to the sleeve to move the collet between a first orientation in which the arms are spaced apart by a first distance and a second orientation in which the arms are spaced apart by an increased second distance, the first stop surface engaging second stop surface of the arms that extend transverse to the longitudinal axis when the collet is in the first orientation to prevent translation of the shaft relative to the sleeve along the longitudinal axis in one direction, the shaft having a drive interface configured to engage the drive interface surface of the head.