Matthew J Morrison

US Patent:

6520962, Feb 18, 2003

Filed:

Oct 23, 2000

Appl. No.:

09/694702

Inventors:

Harold Sparr Taylor - Memphis TN
Matthew M. Morrison - Cordova TN

Assignee:

SDGI Holdings, Inc. - Wilmington DE

International Classification:

A61B 1756

US Classification:

606 61, 606 53, 606 54, 606 72

Abstract:

A connection assembly between a spinal implant rod and a vertebral anchor. The assembly has a longitudinal member, a housing, a rod interface washer, and a compression member. The longitudinal member has an aperture at one end and a wedge at the other. The housing has a passageway to accept the shank of a bone screw and a bore to accept the wedge. The bore is open to the passageway so that when the wedge is pulled from the bore it pushes against the shank of the bone screw, trapping the bone screw between the wedge and the sidewalls of the passageway. Threading a setscrew into the aperture presses a spinal rod against the washer, presses the washer against the housing, and pulls the wedge against the shank of the bone screw. Further tightening of the setscrew then locks the bone screw and rod together.

US Patent:

6562038, May 13, 2003

Filed:

Mar 15, 2000

Appl. No.:

09/526104

Inventors:

Matthew M. Morrison - Cordova TN

Assignee:

SDGI Holdings, Inc. - Wilmington DE

International Classification:

A61B 1770

US Classification:

606 61, 606 60, 606 72

Abstract:

A variable angle connection between a spinal rod and a vertebral anchor with a clevis to attach to the vertebral anchor, permitting the vertebral anchor to be longitudinally offset from the connecting point on the rod. The connection assembly has a bolt with a stop disposed near one end of the bolt and an aperture for receiving a portion of the spinal implant rod at the other end. The assembly also has a clevis. The clevis defines a bore to hold a portion of the vertebral anchor and the ears of the clevis have holes through which the bolt is located with the ears positioned between the stop and aperture of the bolt. The assembly also has a rod interface washer positioned over a portion of the bolt, between the aperture of the bolt and the inside ear of the clevis. The rod interface washer is partly movable between the aperture of the bolt and the clevis, but the washer is fixed against rotating in relation to the bolt. Finally, the assembly also includes a screw that is threads into the side of the bolt and continues into the aperture of the bolt.

US Patent:

6572618, Jun 3, 2003

Filed:

Oct 23, 2000

Appl. No.:

09/694291

Inventors:

Matthew M. Morrison - Cordova TN

Assignee:

SDGI Holdings, Inc. - Wilmington DE

International Classification:

A61B 1768

US Classification:

606 61, 606 60

Abstract:

A variable angle connection between a spinal rod and a vertebral anchor with a clevis to attach to the vertebral anchor, permitting the vertebral anchor to be longitudinally offset from the connecting point on the rod. The connection assembly has a bolt with an aperture for receiving a portion of the spinal implant rod at one end. The assembly also has a clevis. The clevis defines a bore to hold a portion of the vertebral anchor and the ears of the clevis have holes through which the bolt is located with the rotably connected to the ears. The assembly also has a rod interface washer positioned over a portion of the bolt, between the aperture of the bolt and the inside ear of the clevis. The rod interface washer is partly movable between the aperture of the bolt and the clevis, but the washer is fixed against rotating in relation to the bolt. Finally, the assembly also includes a compression member that pushes the rod toward the vertebral anchor so that the inside and outside ears of said clevis are pressed together and the clevis is tightened the vertebral anchor.

US Patent:

6689133, Feb 10, 2004

Filed:

Oct 16, 2001

Appl. No.:

09/978932

Inventors:

Matthew M. Morrison - Cordova TN
B. Thomas Barker - Memphis TN
John Stewart Young - Memphis TN
Jeffrey W. Beale - Arlington TN
Chris E. Johnson - Germantown TN

Assignee:

SDGI Holdings, Inc. - Wilmington DE

International Classification:

A61B 1780

US Classification:

606 71, 606 72

Abstract:

A multi-axial bone fixation implant includes an elongated member, one or more bone anchor assemblies, and stabilizer members which are fitted within the elongated member. A bone bolt having cancellous threads on one end and machine threads at the opposing end and an enlarged portion between these sections is also provided. The bone bolt is anchored into a bone via the cancellous thread end. The machine threaded end passes through an opening of the elongated member and the stabilizer, and is engaged by a coupled washer and nut. The washer includes an undercut within its oblong aperture, and the nut includes a projecting sleeve. The sleeve is inserted into the washer aperture and expanded, so that the undercut retains the sleeve within the washer without impairing the rotatability or translatability of the nut and washer with respect to each other. When locked by the nut and washer atop the elongated member, the enlarged portion of the bolt is forced against an inside wall of the stabilizer, which is in turn locked against the elongated member. Accordingly, the elongated member is fixed with respect to the bone anchor at one of an infinite number of multi-axial angles.

US Patent:

6858031, Feb 22, 2005

Filed:

Aug 28, 2001

Appl. No.:

09/941056

Inventors:

Matthew M. Morrison - Cordova TN, US
B. Thomas Barker - Memphis TN, US
John Stewart Young - Memphis TN, US
Jeffrey W. Beale - Arlington TN, US
Chris E. Johnson - Germantown TN, US

Assignee:

SDGI Holdings, Inc. - Wilmington DE

International Classification:

A61B017/56

US Classification:

606 69

Abstract:

A spinal implant system is disclosed for the fixation of bone segments in the spine. The system includes an elongated member, one or more bone anchor assemblies, and stabilizer members which are fitted within the elongated member. A bone anchor is attached to a bone, and the elongated member and stabilizer are fitted over the bone anchor. A rounded washer and nut having a corresponding rounded underside surface are fitted on to the bone anchor over the elongated member, and tightened. The configuration of the bone anchor assembly, including an intermediate portion of the bone anchor, the arcuate washer, and the nut, along with the configuration of the sliding support, allows multi-axial positioning of the bone anchor with respect to the elongated member at a plurality of locations along a slotted member.

US Patent:

6872209, Mar 29, 2005

Filed:

May 12, 2003

Appl. No.:

10/436503

Inventors:

Matthew M. Morrison - Cordova TN, US

Assignee:

SDGI Holdings, Inc. - Wilmington DE

International Classification:

A61B017/70

US Classification:

606 61

Abstract:

A variable angle connection between a spinal rod (A) and a vertebral anchor (B) with a clevis () to attach to the vertebral anchor, permitting the vertebral anchor to be longitudinally offset from the connecting point on the rod. The connection assembly has a bolt () with an aperture () for receiving a portion of the spinal implant rod at one end. The assembly also has a clevis (). The clevis defines a bore () to hold a portion of the vertebral anchor and the ears () of the clevis have holes through which the bolt is located with the bolt rotatably connected to the ears. The assembly also has a rod interface washer () positioned over a portion of the bolt, between the aperture () of the bolt and the inside ear of the clevis. The rod interface washer is partly movable between the aperture of the bolt and the clevis, but the washer is fixed against rotating in relation to the bolt. Finally, the assembly also includes a compression member () that pushes the rod toward the vertebral anchor so that the inside and outside ears of said clevis are pressed together and the clevis is tightened the vertebral anchor.

US Patent:

7094238, Aug 22, 2006

Filed:

Nov 22, 2002

Appl. No.:

10/301998

Inventors:

Matthew M. Morrison - Cordova TN, US
Michael S. Veldman - Olive Branch MS, US

Assignee:

SDGI Holdings, Inc. - Wilmington DE

International Classification:

A61B 17/58

US Classification:

606 69

Abstract:

A device for supporting and/or assisting in bone fusion, particularly in the spine, is described. A plate member is provided, along with two or more attachment members that are anchorable to bones. In one embodiment, the plate member has a slot near one end and an aperture at another end. The attachment members include threaded posts for connection to the plate member via the latter's slot(s) and aperture(s). Alternatively, attachment members need not have a threaded post, and attachment members may be connected to the plate member via a bone bolt or similar fixation member. The slot(s) allow a single plate member to be used for a variety of operative situations and anatomies. A device for repositioning bones and a method for using the disclosed devices is also described.

US Patent:

7252670, Aug 7, 2007

Filed:

Feb 10, 2004

Appl. No.:

10/775388

Inventors:

Matthew M. Morrison - Cordova TN, US
B. Thomas Barker - Memphis TN, US
John Stewart Young - Memphis TN, US
Jeffrey W. Beale - Arlington TN, US
Chris E. Johnson - Germantown TN, US

Assignee:

SDGI Holdings, Inc. - Wilmington DE

International Classification:

A61B 17/56

US Classification:

606 71

Abstract:

A multi-axial bone fixation implant includes an elongated member, one or more bone anchor assemblies, and stabilizer members fitted within the elongated member. A bolt having a bone-threaded end and a machine-threaded end and an enlarged medial portion is also provided. The bolt is anchored into a bone, and its machine-threaded end passes through the elongated member and the stabilizer, and is engaged by a coupled washer and nut. The washer includes an oblong aperture, and the nut includes a projecting sleeve. The sleeve is inserted into the washer and expanded, and the washer retains the sleeve without impairing relative rotatability or translatability of the nut and washer. When locked by the nut and washer, the enlarged portion of the bolt is forced against the stabilizer, which locks against the elongated member. The elongated member can be fixed with respect to the anchor at an infinite number of multi-axial angles.