Offset orthopaedic reamer handle
The present invention provides an orthopedic reamer handle that includes a reamer portion configured to transmit torque to a reamer head, a driver portion connected to the reamer portion that is configured to receive and transmit torque from a driver, and a drive train connecting the reamer portion to the driver portion to transmit torque from the driver portion to the reamer portion. The drive train includes a first drive shaft that defines a first axis and is connected to the driver portion at a first end and to a first intermediate connector at a second end. An offsetting member is connected to a second intermediate end of the first intermediate connector at an acute angle relative to the first axis and defines a second axis. The offsetting member connects to the reamer portion via a second intermediate connector at an acute angle relative to the second axis.
1. A joint for transmitting torque in an orthopaedic reamer handle, comprising:
a first connector, said first connector including a first ear and a second ear connected to a base and separated by a first gap, said first ear having a first pin opening with a first opening diameter and said second ear having a second pin opening with a second opening diameter which is greater than said first opening diameter;
a joining member placed within said first gap, said joining member having a pair of opposing faces with a first face opening formed therethrough;
a second connector including a pair of ears pivotably connected to said joining member;
a stepped pin placed within said first pin opening, said second pin opening and said first face opening, said stepped pin having a first region with a first pin diameter held within said first pin opening, a second region with a second pin diameter held within said first face opening and a third region with a third pin diameter held within said second pin opening, said first pin diameter being less than said first opening diameter, said second pin diameter being greater than said first opening diameter and less than said second opening diameter and said third pin diameter being less than said second opening diameter, said respective pin diameters of said first region, said second region, and said third region allowing axial sliding into respective openings of said first ear, said second ear, and said joining member such that said second region of said pin abuts said first ear when said first pin opening, said second pin opening, and said first face opening are aligned; and
a cap engaging said third region and fixedly held within said second pin opening.
2. The joint according to claim 1 , wherein said pair of ears of said second connector includes a third ear having a third pin opening formed through and a fourth ear having a fourth pin opening formed through.
3. The joint according to claim 2 , wherein said joining member has a third face with a second face opening formed thereon and a fourth face with a third face opening formed thereon.
4. The joint according to claim 3 , further including a first pin connecting said second connector to said joining member through said third pin opening and said second face opening and a second pin connecting said second connector to said joining member through said fourth pin opening and said third face opening.
5. The joint according to claim 4 , wherein said joining member has a substantially cubed shape.
6. The joint according to claim 5 , wherein said joining member has at least one facet formed between at least two faces of said joining member.