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William J Frasier, Timothy Beardsley, Connie P Marchek: Non-rigid surgical retractor. DePuy Spine, Nelson Mullins Riley & Scarborough, Kevin J Canning, EuiHoon Lee, June 7, 2011: US07955257 (197 worldwide citation)

The present invention provides a non-rigid retractor for providing access to a surgical site, such as a patient's spine, during a surgical process. When used in spinal surgery, the non-rigid retractor allows a surgeon to operate on one or more spinal levels. The non-rigid retractor includes at least ...


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William J Frasier, Michael Mahoney, Nicholas Pavento, Christopher L Ramsay, David Greg Anderson: Spanning connector for connecting a spinal fixation element and an offset bone anchor. DePuy Spine, Nelson Mullins Riley & Scarborough, November 15, 2011: US08057518 (12 worldwide citation)

A spanning connector for connecting an offset bone anchor to a previously inserted spinal fixation element and method of use is provided. The spanning connector includes a first connecting mechanism for connecting the spanning connector to the bone anchor, and a second connecting mechanism for conne ...


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Sara Dziedzic, William J Frasier, Michael Mahoney, Nicholas Pavento, Christopher L Ramsay, David Greg Anderson: Methods and instruments for approximating misaligned vertebra. DePuy Synthes Products, Nelson Mullins Riley & Scarborough, August 20, 2013: US08512343 (11 worldwide citation)

Methods and instruments are provided for connecting a rod extending along a patient's spinal column to a misaligned vertebra. The method comprises implanting a bone anchor in the misaligned vertebra, attaching an approximating device to the implanted bone anchor and rod, approximating the vertebra t ...


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Steven Ludwig, William J Frasier, Michael Mahoney, Nicholas Pavento: Offset connection bone anchor assembly. DePuy Synthes Products, Nelson Mullins Riley & Scarborough, November 25, 2014: US08894690 (1 worldwide citation)

A bone anchor assembly for coupling an offset bone anchor with a previously inserted spinal fixation element and method of use is provided. Exemplary embodiments of a bone anchor assembly are particularly suited for use in a rod-first spinal surgical technique in which a bone anchor inserted into a ...


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William J Frasier, Connie P Marchek, Timothy Beardsley, Michael Zajack: Retractor blade extender tower. Depuy Spine, Lahive & Cockfield, Kevin J Canning, December 1, 2009: US07625339 (1 worldwide citation)

A blade extending tower for setting blade depth on retractors having telescoping or extending blades. The blade extending tower features a base, a column extending from the base, and mating features on the column configured to engage the blades of a retractor to extend the blades to a desired blade ...


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William J Frasier, Connie P Marchek, Timothy Beardsley, Michael Zajack: Retractor blade extender tower. DePuy Synthes Products, Nelson Mullins Riley & Scarborough, June 7, 2016: US09357908

A blade extending tower is provided for setting blade depth on retractors having telescoping or extending blades. The blade extending tower features a base, a column extending from the base, and mating features on the column configured to engage the blades of a retractor to extend the blades to a de ...


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William J Frasier, Timothy Beardsley, Connie P Marchek: Non-rigid surgical retractor. DePuy Spine, Lahive & Cockfield, July 5, 2007: US20070156023-A1

The present invention provides a non-rigid retractor for providing access to a surgical site, such as a patient's spine, during a surgical process. When used in spinal surgery, the non-rigid retractor allows a surgeon to operate on one or more spinal levels. The non-rigid retractor includes at least ...


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William J Frasier, Paul G Beaudoin, John R Cournoyer, Michael S Varieur, Dale E Whipple, Thomas J Runco: Rod reduction methods and devices. Depuy Spine, Nutter Mcclennen & Fish, September 25, 2008: US20080234765-A1

The present invention provides methods and devices for reducing a rod disposed within or adjacent to a rod-receiving head of a spinal implant. In general, a rod reduction device is provided that can removably mate to the rod-receiving head of a spinal implant and be effective to reduce a rod dispose ...


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William J Frasier, Timothy Beardsley, Connie P Marchek, Sara Dziedzic, Holly R Brideau, Sean Selover, Nicholas Pavento, Charles M Bartish, James Roveda, Michael Slivka: Inflatable retractor. DePuy Spine, Lahive & Cockfield, April 3, 2008: US20080081951-A1

The present invention provides an inflatable retractor for providing access to a surgical site, such as a patient's spine, during a surgical process. When used in spinal surgery, the inflatable retractor allows a surgeon to operate on one or more spinal levels. The inflatable retractor includes an i ...