Patent ID: 9119657
Filing Date: 2015-09-01
Classification: A61B

Abstract:
1. A surgical tool, comprising: an end effector, comprising: a shaft assembly proximal to the end effector, wherein the end effector is configured to rotate relative to the shaft assembly; a rotary drive shaft configured to transmit rotary motions, the rotary drive shaft selectively movable axially between a first axial position and a second axial position relative to the shaft assembly; and a locking mechanism comprising a locking member movably coupled to the rotary drive shaft, wherein the locking member is axially movable with the rotary drive shaft, wherein the locking member is in a third axial position relative to the shaft assembly when the rotary drive shaft is in the first axial position, wherein the locking member is in a fourth axial position relative to the shaft assembly when the rotary drive shaft is in the second axial position, wherein the rotary drive shaft is rotatable relative to the locking member in the fourth axial position, wherein the locking member is configured to prevent rotation of the end effector when the locking member is in the third axial position, and wherein the locking member is disengaged from the end effector in the fourth axial position; wherein the rotary drive shaft is configured to engage with the rotary drive nut to transmit rotary motions to the rotary drive nut, and wherein rotary motions of the rotary drive nut actuate translation of the threaded rotary drive member and the I-beam member in the axial direction, and wherein the rotary drive shaft is configured to apply the rotary motions to the end effector when in the second axial position.