David R Kaes

US Patent:

6368322, Apr 9, 2002

Filed:

Apr 3, 2000

Appl. No.:

09/542556

Inventors:

Howard J. Luks - Ossining NY
John W. Boyle - Upper Montclair NJ
Lawrence A. Shimp - Morganville NJ
David R. Kaes - Toms River NJ
John W. Morris - Beachwood NJ
Erik O. Martz - Jackson NJ
Daniel E. Rosenthal - Milburn NJ

Assignee:

Osteotech, Inc. - Eatontown NJ

International Classification:

A61B 1786

US Classification:

606 73

Abstract:

An interference screw suitable for surgical use is provided. The interference screw is constructed from bone and includes an elongated body having an outer threaded surface, a tapered insertion end and a central throughbore. Insertion tool engaging structure is formed along the walls defining the throughbore. The insertion tool engaging structure extends from the proximal end of the elongated body over a substantial portion of the length of the elongated body. The insertion tool engaging structure functions to distribute the forces required to insert the interference screw throughout the body of the interference screw to prevent fracturing of the interference screw during insertion into bone.

US Patent:

6478825, Nov 12, 2002

Filed:

Nov 28, 2001

Appl. No.:

09/996243

Inventors:

John M. Winterbottom - Jackson NJ
Lawrence Shimp - Morganville NJ
Todd M. Boyce - Aberdeen NJ
David Kaes - Toms River NJ

Assignee:

Osteotech, Inc. - Eatontown NJ

International Classification:

A61F 236

US Classification:

623 2363

Abstract:

An implant is provided as a solid aggregate of bone-derived elements, e. g. , particles, powders, granules, fibers, strips and/or large pieces of xenogenic, allogenic, transgenic, tissue engineered or autologous cortical and/or cancellous bone, employing as binding agent for the bone-derived elements a precipitate or crystalline bridge of metal oxide, metal hydroxide, metal salt of an inorganic acid, metal salt of an organic acid, metal-containing silica based glass, or mixture thereof, the binding agent possessing at least slight solubility in polar solvent, adjacent bone-derived elements being bonded to each other through engagement with particles or bridge-like structures of bonding agent.

US Patent:

6530955, Mar 11, 2003

Filed:

May 18, 2001

Appl. No.:

09/861369

Inventors:

John W. Boyle - Upper Montclair NJ
Lawrence A. Shimp - Morganville NJ
David R. Kaes - Toms River NJ
John W. Morris - Beachwood NJ
Erik O. Martz - Jackson NJ
Todd M. Boyce - Aberdeen NJ
Mark Daugherty - Allenwood NJ

Assignee:

Osteotech, Inc. - Eatontown NJ

International Classification:

A61F 244

US Classification:

623 1711, 623 1716

Abstract:

A ramp-shaped intervertebral implant is disclosed. The implant has a body having a first end, a second end, a top surface and a bottom surface. At least one of the top and bottom surfaces is tapered and converges towards the second end of the body. An opening extends through the body and has one end opening onto the top surface of the implant and the other end opening onto the bottom surface of the implant. The implant can be formed from the diaphysis or metaphysis of a long bone, wherein the intramedullary canal of the long bone defines the opening. Alternately, the implant can be made from any biocompatible material having the requisite strength requirement.

US Patent:

6638310, Oct 28, 2003

Filed:

Dec 12, 2000

Appl. No.:

09/734860

Inventors:

Jo-Wen Lin - Tinton Falls NJ
Nelson L. Scarborough - Ocean NJ
Lawrence Shimp - Morganville NJ
David Kaes - Toms River NJ

Assignee:

Osteotech, Inc. - Eatontown NJ

International Classification:

A61F 244

US Classification:

623 1711, 623 1716

Abstract:

An intervertebral spacer formed of dense cancellous human or animal bone is provided. In one preferred embodiment, the intervertebral spacer includes at least one bore which is dimensioned to receive a plug formed from cortical bone tissue. The cortical bone plug provides increased mechanical strength to the intervertebral spacer. Instrumentation for gauging the size of an intervertebral receiving bed and for grasping and inserting an intervertebral spacer or implant into an intervertebral receiving bed are also provided. These instruments include a spacer trial or set of spacer trials for determining the appropriate size spacer required for a particular surgical procedure, a spacer introducer for grasping and positioning a spacer at least partially within a receiving bed formed in the intervertebral space, and a bone tamp for driving a spacer into the receiving bed. Any one or all of these instruments may be provided in a kit for inserting an implant into the intervertebral space. The kit may also include one or more intervertebral spacers or implants.

US Patent:

6706067, Mar 16, 2004

Filed:

Nov 5, 2001

Appl. No.:

10/008279

Inventors:

Lawrence A. Shimp - Morganville NJ
Steven Annunziato - Monmouth Beach NJ
Erik Martz - Howell NJ
David R. Kaes - Toms River NJ

Assignee:

Osteotech, Inc. - Eatontown NJ

International Classification:

A61F 244

US Classification:

623 1711

Abstract:

A C-shaped or ring shaped implant formed of cortical bone has its C-shaped or inner channel filled with a bone promoting material which is preferably demineralized bone fibers formed as a flexible wet sheet or may be cancellous bone, pressed bone fibers formed from demineralized cortical bone chips soaked in acid, or a flex material formed of demineralized bone growth promoting bone fibers. The discrete bone filler element may be secured by a bonding agent, pins or screws, metal, polymer or bone material. The bone filler material is preferably bonded by filling a section of a long bone medullary cavity with wet bone fibers and then drying the fibers to bond them to the outer bone. A filled bone ring may be sliced to form annular filled sections which are then divided into mirror image C-shaped halves each forming an implant. Flex material of compressed bone fibers may be formed with an opening shaped to receive a cortical bone implant element having a C-shaped channel. The flex material surrounds the cortical bone element and fills its channel.

US Patent:

6808585, Oct 26, 2004

Filed:

Oct 9, 2001

Appl. No.:

09/973597

Inventors:

Todd M. Boyce - Aberdeen NJ
David Kaes - Toms River NJ
Nelson L. Scarborough - Ocean NJ

Assignee:

Osteotech, Inc. - Eatontown NJ

International Classification:

A61F 228

US Classification:

15624411, 156245, 156296, 264109, 623 2361, 623 2363, 435372

Abstract:

An osteogenic osteoimplant in the form of a flexible sheet comprising a coherent mass of bone-derived particles, the osteoimplant having a void volume not greater than about 32% and a method of making an osteogenic osteoimplant having not greater than about 32% void volume, the method comprising: providing a coherent mass of bone-derived particles; and, mechanically shaping the coherent mass of bone-derived particles to form an osteogenic osteoimplant in the form of a flexible sheet.

US Patent:

6855167, Feb 15, 2005

Filed:

Dec 5, 2001

Appl. No.:

10/005238

Inventors:

Lawrence A. Shimp - Morganville NJ, US
John M. Winterbottom - Jackson NJ, US
David R. Kaes - Toms River NJ, US
Todd M. Boyce - Aberdeen NJ, US
Erik O. Martz - Howell NJ, US

Assignee:

Osteotech, Inc. - Eatontown NJ

International Classification:

A61F002/44
A61F002/28

US Classification:

623 1711, 623 2363, 623919, 4034081

Abstract:

A cortical bone implant is formed of two or more planks of bone which are connected with one or more offset pins. The pins may be right circular cylinders inserted into a corresponding offset bore which offset bends the inserted pin. The bending creates compression and tensile loads in the pin which loads creates friction compression forces on the planks connecting them to the pins by friction. The pins may have different shapes to form the offsets and different configurations for friction attachment to the planks. The implants may be formed of flat or L-shaped planks or bones formed into other shapes including interlocking arrangements. Processes and fixtures are disclosed for forming the pins, planks and implants. Various embodiments of the pins, planks, implants and processes are disclosed.

US Patent:

6863694, Mar 8, 2005

Filed:

Jul 3, 2000

Appl. No.:

09/610026

Inventors:

Todd M. Boyce - Aberdeen NJ, US
David Kaes - Toms River NJ, US
Nelson L. Scarborough - Ocean NJ, US

Assignee:

Osteotech, Inc. - Eatontown NJ

International Classification:

A61F002/28

US Classification:

623 2363, 623 2361

Abstract:

An osteogenic osteoimplant in the form of a flexible sheet comprising a coherent mass of bone-derived particles, the osteoimplant having a void volume not greater than about 32% and a method of making an osteogenic osteoimplant having not greater than about 32% void volume, the method comprising: providing a coherent mass of bone-derived particles; and, mechanically shaping the coherent mass of bone-derived particles to form an osteogenic osteoimplant in the form of a flexible sheet.