Makoto M Nonaka

US Patent:

7407513, Aug 5, 2008

Filed:

May 3, 2004

Appl. No.:

10/838515

Inventors:

Neville Alleyne - La Jolla CA, US
James R. Gerchow - Sturgis MI, US
Makoto Nonaka - La Jolla CA, US
Philip James Sluder - El Cajon CA, US

Assignee:

Smart Disc, Inc. - Allen Park MI

International Classification:

A61F 2/44

US Classification:

623 1716, 623 1715, 606246

Abstract:

An artificial spinal disk comprises a central capsule that is configured to slide laterally within the disk space with one or more of flexion, extension, and lateral bending of the spine so as to shift an instantaneous center of rotation of the artificial disk. In one embodiment, the invention comprises an artificial spinal disk comprising a first plate having an inwardly directed surface, a second plate having an inwardly directed surface facing generally toward the inwardly directed surface of the first plate, and a central capsule with outwardly directed opposed faces that slidably mate with the inwardly directed surfaces of the first and second plates.

US Patent:

20040030337, Feb 12, 2004

Filed:

Apr 8, 2003

Appl. No.:

10/411075

Inventors:

Neville Alleyne - La Jolla CA, US
Makoto Nonaka - La Jolla CA, US

International Classification:

A61B017/56

US Classification:

606/061000

Abstract:

A bone fixation apparatus adapted for use in spinal stabilization. The apparatus includes a threaded bone screw having a spherical head that is received in a receiver cup. The receiver cup also includes a slot or groove through which a support rod passes. A saddle is positioned in the receiver cup below the support rod and above the head of the threaded bone screw. Alignment flanges are positioned partially around an opening on the receiver cup opposite the bone screw. A cap having internal grooves corresponding to the alignment flanges mates with the receiver cup. The cap may be positioned onto the receiver cup in a first orientation and secured to the receiver cup by rotating approximately one quarter turn. A compression member is screwed into internal threads on an opening of the cup to provide pressure on the support rod, thereby fixing the rod to the receiver cup.

US Patent:

20050049590, Mar 3, 2005

Filed:

Mar 5, 2004

Appl. No.:

10/794586

Inventors:

Neville Alleyne - La Jolla CA, US
James Gerchow - Sturgis MI, US
Philip Sluder - El Cajon CA, US
Makoto Nonaka - La Jolla CA, US
Kendall Bartlett - Chula Vista CA, US

International Classification:

A61B017/56

US Classification:

606061000

Abstract:

Spinal implants with extending spikes include spikes with laterally extending projections that may form barbs. Several different spike driver mechanisms are also provided. In one embodiment, sliding wedge spike drivers are used. In another embodiment, threaded rotating spike drivers are used. Gear driven spikes may also be provided in some embodiments. Worm gear trains and rack and pinion gear trains may be used to extend the spikes.

US Patent:

20080058811, Mar 6, 2008

Filed:

Nov 6, 2007

Appl. No.:

11/935990

Inventors:

Neville Alleyne - La Jolla CA, US
Makoto Nonaka - La Jolla CA, US

Assignee:

NAS Medical Technologies, Inc. - Allen Park MI

International Classification:

A61B 17/58
A61B 17/56

US Classification:

606061000, 606103000, 606073000

Abstract:

A bone fixation apparatus adapted for use in spinal stabilization. The apparatus includes a threaded bone screw having a spherical head that is received in a receiver cup. The receiver cup also includes a slot or groove through which a support rod passes. A saddle is positioned in the receiver cup below the support rod and above the head of the threaded bone screw. Alignment flanges are positioned partially around an opening on the receiver cup opposite the bone screw. A cap having internal grooves corresponding to the alignment flanges mates with the receiver cup. The cap may be positioned onto the receiver cup in a first orientation and secured to the receiver cup by rotating approximately one quarter turn. A compression member is screwed into internal threads on an opening of the cup to provide pressure on the support rod, thereby fixing the rod to the receiver cup.

US Patent:

20080065220, Mar 13, 2008

Filed:

Aug 20, 2007

Appl. No.:

11/841779

Inventors:

Neville Alleyne - La Jolla CA, US
James Gerchow - Sturgis MI, US
Makoto Nonaka - La Jolla CA, US
Philip Sluder - El Cajon CA, US

International Classification:

A61F 2/44

US Classification:

623017160, 623017150

Abstract:

An artificial spinal disk comprises a central capsule that is configured to slide laterally within the disk space with one or more of flexion, extension, and lateral bending of the spine so as to shift an instantaneous center of rotation of the artificial disk. In one embodiment, the invention comprises an artificial spinal disk comprising a first plate having an inwardly directed surface, a second plate having an inwardly directed surface facing generally toward the inwardly directed surface of the first plate, and a central capsule with outwardly directed opposed faces that slidably mate with the inwardly directed surfaces of the first and second plates.

US Patent:

20080065221, Mar 13, 2008

Filed:

Aug 20, 2007

Appl. No.:

11/841797

Inventors:

Neville Alleyne - La Jolla CA, US
James Gerchow - Sturgis MI, US
Makoto Nonaka - La Jolla CA, US
Philip Sluder - El Cajon CA, US

International Classification:

A61F 2/44

US Classification:

623017160, 623017150

Abstract:

An artificial spinal disk comprises a central capsule that is configured to slide laterally within the disk space with one or more of flexion, extension, and lateral bending of the spine so as to shift an instantaneous center of rotation of the artificial disk. In one embodiment, the invention comprises an artificial spinal disk comprising a first plate having an inwardly directed surface, a second plate having an inwardly directed surface facing generally toward the inwardly directed surface of the first plate, and a central capsule with outwardly directed opposed faces that slidably mate with the inwardly directed surfaces of the first and second plates.