1
Stephen Ritland: Retractor and method for spinal pedicle screw placement. Depuy Spine, Nutter McClennen & Fish, August 16, 2005: US06929606 (281 worldwide citation)

To avoid traditional muscle dissection required in the placement of a screw for a pedicle screw fixation, a retractor is provided having a guide of an appropriate length to provide access from the skin surface to the dorsal aspect of the vertebra over the pedicle. The retractor has a handle to provi ...


2
Stephen Ritland: Retractor and method for spinal pedicle screw placement. DePuy Spine, Nutter McClennen & Fish, October 4, 2005: US06951538 (193 worldwide citation)

To avoid traditional muscle dissection required in the placement of a screw for a pedicle screw fixation, a retractor is provided having a guide of an appropriate length to provide access from the skin surface to the dorsal aspect of the vertebra over the pedicle. The retractor has a handle to provi ...


3
Ritland Stephen: Retractor and method for spinal pedicle screw placement. Ritland Stephen, YASKANIN Mark L, August 8, 2002: WO/2002/060330 (1 worldwide citation)

To avoid traditional muscle dissection required in the placement of a screw for a pedicle screw fixation, a retractor (10)is provided having a guide (14) of an appropriate length to provide access form the skin surface to the dorsal aspect of the vertebra over the pedicle. The retractor (10) has a h ...


4
Ritland Stephen: Retractor and method for spinal pedicle screw placement. Ritland Stephen, October 29, 2003: EP1355578-A1

To avoid traditional muscle dissection required in the placement of a screw for a pedicle screw fixation, a retractor (10)is provided having a guide (14) of an appropriate length to provide access form the skin surface to the dorsal aspect of the vertebra over the pedicle. The retractor (10) has a h ...


5
Stephen Ritland: Retractor and method for spinal pedicle screw placement. Mark L Yaskanin, Sheridan Ross PC, December 25, 2003: US20030236447-A1

To avoid traditional muscle dissection required in the placement of a screw for a pedicle screw fixation, a retractor is provided having a guide of an appropriate length to provide access from the skin surface to the dorsal aspect of the vertebra over the pedicle. The retractor has a handle to provi ...


6
Stephen Ritland: Retractor and method for spinal pedicle screw placement. Sheridan Ross PC, September 5, 2002: US20020123668-A1

To avoid traditional muscle dissection required in the placement of a screw for a pedicle screw fixation, a retractor is provided having a guide of an appropriate length to provide access from the skin surface to the dorsal aspect of the vertebra over the pedicle. The retractor has a handle to provi ...