Patent ID: 9186156
Filing Date: 2015-11-17
Classification: A61B

Abstract:
1. A surgical drill, said drill said drill including: an input drive shaft configured to receive the rotational output of a handpiece; a first clutch having: a first clutch input member connected to said input drive shaft to rotate with said input drive shaft; a first clutch output member configured to selectively engage with or disengage from said first clutch input member wherein, when said first clutch output member is engaged with said first clutch input member, said first clutch output member rotates with said first clutch input member and, when said first clutch output member is disengaged from said first clutch input member, said first clutch output member does not rotate with said first clutch input member; and a biasing member that, in the absence of an opposite force, places a force on said first clutch output member to hold said output member in a disengaged state relative to said first clutch input member; a second clutch having: a second clutch input member that is connected to said input drive shaft to rotate with said input drive shaft; a second clutch output member that is separate from said second clutch input member; a coupling assembly that extends between said second clutch input member and said second clutch output member for: when said second clutch input member rotates in a first direction, causing said second clutch output member to rotate with said second clutch input member; and when said second clutch input member rotates in a second direction opposite the first direction, does not cause second clutch output member to rotate with said second clutch input member; and at least one drill bit configured to perform a medical procedure on tissue, said at least one drill bit being connected to said first clutch output member and to said second clutch output member to rotate with said output members and to place a force on said first clutch output member opposition to the force placed on said first clutch output member by said first clutch biasing member.