Richard I Navarro

US Patent:

7001389, Feb 21, 2006

Filed:

Jul 5, 2002

Appl. No.:

10/190257

Inventors:

Richard R. Navarro - Strongsville OH, US
Dennis M. Madigan - Doylestown OH, US
Morton B. Albert - Akron OH, US
Randall R. Theken - Coventry Township OH, US

International Classification:

A61B 17/56

US Classification:

606 71, 606 73, 606 69

Abstract:

A locking screw assembly is provided which allows installation into a plate-like member using relatively little force, but which requires relatively great force for removal. The fastener has an annular locking ring provided within a groove in the head of the screw to allow the screw to sit within or flush with the anterior surface of the plate. The through-hole in the plate which receives the locking screw comprises an entrance, a collar section, an undercut, and an exit. The locking ring resides within the undercut. The locking ring has a leading surface that is chamfered or radiused and a trailing surface that is flat. The chamfer allows the locking ring to easily be inserted into the through-hole by interacting with a lead chamfer in the entrance. After installation, the flat trailing surface abuts a lip adjoining the collar section and the undercut and prevents the screw from being easily removed from the through-hole.

US Patent:

7168116, Jan 30, 2007

Filed:

May 5, 2004

Appl. No.:

10/839002

Inventors:

Steven I. Reger - Cleveland OH, US
Richard R. Navarro - Hinckley OH, US

Assignee:

The Cleveland Clinic Foundation - Cleveland OH

International Classification:

A47C 27/10
A61G 13/12

US Classification:

5713, 5702, 5913

Abstract:

An apparatus () for supporting a patient during a medical procedure includes a bead bag () that is filled with compressible beads () and that forms a lower layer of the apparatus (). The apparatus () also includes a layer of foam material () that is located above the bead bag and an air cell grid () that has a plurality of inflatable air cells (). The air cell grid () forms an upper layer of the apparatus () and provides a soft surface upon which the patient lies. The bead bag (), when subjected to a vacuum, becomes rigid for supporting the air cell grid () against the patient for helping to maximize a surface area of contact between the patient and the apparatus ().

US Patent:

7763075, Jul 27, 2010

Filed:

Feb 24, 2006

Appl. No.:

11/361131

Inventors:

Richard R. Navarro - Strongsville OH, US
Bharadwaj Ananthan - Akron OH, US
Randall R. Theken - Coventry Township OH, US

Assignee:

Theken Spine, LLC - Akron OH

International Classification:

A61F 2/44

US Classification:

623 1715, 623 1711, 623 1716

Abstract:

A visco-elastic motion-limiting artificial intervertebral disc prosthesis is provided that mimics the physiologic function of a normal spinal disc. The disc comprises upper and lower endplates having therewithin channels or openings for optionally receiving one or more motion-limiting members fitted on each end with an enlarged portion. One or more compression stops is provided between the upper and lower endplates. Additionally, an elastomeric cushion is disposed between the endplates and surrounds the motion-limiting members. Also, force transducers and microelectronics can be utilized to provide data to the surgeon or the patient regarding the load state of the disc.

US Patent:

7763076, Jul 27, 2010

Filed:

Feb 24, 2006

Appl. No.:

11/362424

Inventors:

Richard R. Navarro - Strongsville OH, US
Bharadwaj Ananthan - Akron OH, US
Randall R. Theken - Coventry Township OH, US

Assignee:

Theken Spine, LLC - Akron OH

International Classification:

A61F 2/44

US Classification:

623 1715, 623 1711

Abstract:

A visco-elastic motion-limiting artificial intervertebral disc prosthesis is provided that mimics the physiologic function of a normal spinal disc. The disc comprises upper and lower endplates having therewithin channels or openings for optionally receiving one or more motion-limiting members fitted on each end with an enlarged portion. One or more compression stops is provided between the upper and lower endplates. Additionally, an elastomeric cushion is disposed between the endplates and surrounds the motion-limiting members. Also, force transducers and microelectronics can be utilized to provide data to the surgeon or the patient regarding the load state of the disc.

US Patent:

7766911, Aug 3, 2010

Filed:

Dec 5, 2005

Appl. No.:

11/294185

Inventors:

Richard R. Navarro - Strongsville OH, US
Dennis M. Madigan - Doylestown OH, US
Morton B. Albert - Akron OH, US
Randall R. Theken - Coventry Township OH, US

Assignee:

Theken Spine, LLC - Akron OH

International Classification:

A61B 17/56

US Classification:

606 71, 606281, 606286

Abstract:

A locking screw assembly is provided which allows installation into a plate-like member using relatively little force, but which requires relatively great force for removal. The fastener has an annular locking ring provided within a groove in the head of the screw to allow the screw to sit within or flush with the anterior surface of the plate. The through-hole in the plate which receives the locking screw comprises a ledge and an undercut. When the fastener is installed into the plate, the locking ring resides within the undercut and is prevented from backing out by the ledge. The locking ring has a leading surface that may be chamfered or radiused and a trailing surface that may be flat. The chamfer allows the locking ring to easily be inserted into the through-hole by interacting with the through-hole. After installation, the trailing surface contacts the ledge.

US Patent:

7771478, Aug 10, 2010

Filed:

Apr 2, 2004

Appl. No.:

10/552094

Inventors:

Richard R. Navarro - Strongsville OH, US
Bharadwaj Ananthan - Akron OH, US
Randall R. Theken - Coventry Township OH, US

Assignee:

Theken Spine, LLC - Akron OH

International Classification:

A61F 2/44

US Classification:

623 1715, 623 1711

Abstract:

A visco-elastic motion-limiting artificial intervertebral disc prosthesis is provided that mimics the physiologic function of a normal spinal disc. The disc comprises upper and lower endplates having therewithin channels or openings for optionally receiving one or more motion-limiting members fitted on each end with an enlarged portion. One or more compression stops is provided between the upper and lower endplates. Additionally, an elastomeric cushion is disposed between the endplates and surrounds the motion-limiting members. Also, force transducers and microelectronics can be utilized to provide data to the surgeon or the patient regarding the load state of the disc.

US Patent:

7771480, Aug 10, 2010

Filed:

Feb 24, 2006

Appl. No.:

11/361880

Inventors:

Richard R. Navarro - Strongsville OH, US
Bharadwaj Ananthan - Akron OH, US
Randall R. Theken - Coventry Township OH, US

Assignee:

Theken Spine, LLC - Akron OH

International Classification:

A61F 2/44

US Classification:

623 1715, 623 1711

Abstract:

A visco-elastic motion-limiting artificial intervertebral disc prosthesis is provided that mimics the physiologic function of a normal spinal disc. The disc comprises upper and lower endplates having therewithin channels or openings for optionally receiving one or more motion-limiting members fitted on each end with an enlarged portion. One or more compression stops is provided between the upper and lower endplates. Additionally, an elastomeric cushion is disposed between the endplates and surrounds the motion-limiting members. Also, force transducers and microelectronics can be utilized to provide data to the surgeon or the patient regarding the load state of the disc.

US Patent:

7780666, Aug 24, 2010

Filed:

Jun 1, 2005

Appl. No.:

11/142702

Inventors:

Richard R. Navarro - Strongsville OH, US
Dennis M. Madigan - Doylestown OH, US
Morton B. Albert - Akron OH, US
Randall R. Theken - Coventry Township OH, US

Assignee:

Theken Spine, LLC - Akron OH

International Classification:

A61B 17/70

US Classification:

606 71, 606281, 606286

Abstract:

A locking screw assembly is provided which allows installation into a plate-like member using relatively little force, but which requires relatively great force for removal. The fastener has an annular locking ring provided within a groove in the head of the screw to allow the screw to sit within or flush with the anterior surface of the plate. The through-hole in the plate which receives the locking screw comprises an entrance, a collar section, an undercut, and an exit. The locking ring resides within the undercut. The locking ring has a leading surface that is chamfered or radiused and a trailing surface that is flat. The chamfer allows the locking ring to easily be inserted into the through-hole by interacting with a lead chamfer in the entrance. After installation, the flat trailing surface abuts a lip adjoining the collar section and the undercut and prevents the screw from being easily removed from the through-hole.