Christopher C Demaria

US Patent:

7425214, Sep 16, 2008

Filed:

Mar 3, 2005

Appl. No.:

11/071793

Inventors:

Thomas F. McCarthy - Neshanic Station NJ, US
Christopher DeMaria - Glen Rock NJ, US
Jason R. Cahayla - Wanaque NJ, US

Assignee:

Howmedica Osteonics Corp. - Mahwah NJ

International Classification:

A61B 17/74

US Classification:

606 89

Abstract:

Apparatus and method are described for interoperatively determining, during a trailing procedure conducted in connection with total hip arthroplasty, a combination of neck length and femoral head offset required in a femoral component for establishing appropriate hip mechanics in a prosthetic hip joint to be implanted at an implant site. A trial femoral head is coupled for selective movement relative to a femoral stem component to move the trial femoral head longitudinally and laterally relative to a predetermined direction among selected combinations of trial distance and trial offset to evaluate hip mechanics and determine interoperatively an appropriate combination of trial distance and trial offset corresponding to the combination of neck length and femoral head offset required in the prosthetic hip joint.

US Patent:

7632275, Dec 15, 2009

Filed:

Jul 1, 2004

Appl. No.:

10/882759

Inventors:

Christopher DeMaria - Glen Rock NJ, US

Assignee:

Howmedica Osteonics Corp. - Mahwah NJ

International Classification:

A61B 17/00

US Classification:

606 80, 408227

Abstract:

An orthopedic reamer for use in creating and sizing canals in a bone is disclosed. The orthopedic reamer includes a non-polymeric cutting portion having at least one cutting surface thereon and a polymeric body portion covering at least a portion of the cutting portion. The at least one cutting surface is not covered by the polymeric body portion.

US Patent:

8197547, Jun 12, 2012

Filed:

Jul 12, 2005

Appl. No.:

11/179387

Inventors:

Paul Higham - Ringwood NJ, US
Chau Ngo - Secaucus NJ, US
Christopher DeMaria - Glen Rock NJ, US

Assignee:

Howmedica Osteonics Corp. - Mahwah NJ

International Classification:

A61F 2/44

US Classification:

623 1716

Abstract:

A spinal implant for replacing the natural nucleus of the disc made from a polymer such as hydrogel having a radiopaque material located within the polymer. The material may be in the form of a powder dispersed throughout the polymer or may be in he form of a powder dispersed in layers or in other specific locations within the polymer. The radiopaque material is metal such as gold, tungsten, titanium, tantalum or platinum. The metal may also be in the form of a foil or wire located within the hydrogel such as polyurethane, thereby making the implant visible on x-rays. Other polymers besides hydrogel may be used with the radiopaque material being dispersed therein.

US Patent:

8333805, Dec 18, 2012

Filed:

Mar 20, 2006

Appl. No.:

11/384921

Inventors:

Christopher DeMaria - Glen Rock NJ, US
Edward J. Laganis - Edgewater NJ, US
Anthony J. La Rosa - Wharton NJ, US

Assignee:

Howmedica Osteonics Corp. - Mahwah NJ

International Classification:

A61F 2/38

US Classification:

623 2035

Abstract:

The present invention relates to a femoral component for use in connection with knee anthroplasty. The implant includes a support having a contoured inner bone engaging surface, and a shell affixed to the support. The shell has an outer surface spaced so as to provide an articulation surface for engaging the tibia that substantially replicates the shape of a femoral condyle, and an inner surface for receiving an outer surface of the support. The support bone engaging surface is structured to mate with a prepared surface of the distal femur and the support spaces the shell outer surface at a predetermined distance from the prepared surface.

US Patent:

20040054413, Mar 18, 2004

Filed:

Sep 16, 2002

Appl. No.:

10/244306

Inventors:

Paul Higham - Ringwood NJ, US
Chau Ngo - Secaucus NJ, US
Christopher DeMaria - Glen Rock NJ, US
Philip Williams - Teaneck NJ, US

Assignee:

Howmedica Osteonics Corp. - Allendale NJ

International Classification:

A61F002/44

US Classification:

623/017160, 623/908000, 264/222000

Abstract:

A spinal implant for replacing the natural nucleus of the disc made from a polymer such as hydrogel having a radiopaque material located within the polymer. The material may be in the form of a powder disbursed throughout the polymer or may be in he form of a powder disbursed in layers or in other specific locations within the polymer. The radiopaque material is metal such as gold, tungsten, titanium, tantalum or platinum. The metal may also be in the form of a foil or wire located within the hydrogel such as polyurethane, thereby making the implant visible on x-rays. Other polymers besides hydrogel may be used with the radiopaque material being disbursed therein.

US Patent:

20050236742, Oct 27, 2005

Filed:

Apr 27, 2004

Appl. No.:

10/832852

Inventors:

Philip Williams - Teaneck NJ, US
Chau Ngo - Secaucus NJ, US
Christopher DeMaria - Glen Rock NJ, US

Assignee:

Howmedica Osteonics Corp. - Mahwah NJ

International Classification:

B29C045/00

US Classification:

264478000, 264028000, 264488000, 264085000, 264328160

Abstract:

A wear resistant hydrogel for use as a prosthetic implant, such as for cartilage, is made by forming a solution of polyvinyl alcohol in a solvent of DMSO/water. The solution is placed in a mold and is gelated by cycling the mold in a freeze-thaw cycle at a temperature at or below 4 C. for a period of 2 to 24 hours. The hydrogel so formed is washed in a saline solution, including potassium carbonate. The hydrogel is then dehydrated to 20 to 70% water content and thereafter irradiated with Gamma radiation. The surface of the hydrogel is then cross-linked using a boric acid solution preferably between 2.5 and 5% for about 1 minute. The hydrogel is then rinsed and sterilized.

US Patent:

20060255503, Nov 16, 2006

Filed:

Jul 24, 2006

Appl. No.:

11/491703

Inventors:

Paul Higham - Ringwood NJ, US
Chau Ngo - Secaucus NJ, US
Christopher DeMaria - Glen Rock NJ, US
Philip Williams - Teaneck NJ, US

Assignee:

Howmedica Osteonics Corp. - Mahwah NJ

International Classification:

B29C 41/22

US Classification:

264255000

Abstract:

A spinal implant for replacing the natural nucleus of the disc made from a polymer such as hydrogel having a radiopaque material located within the polymer. The material may be in the form of a powder dispersed throughout the polymer or may be in he form of a powder dispersed in layers or in other specific locations within the polymer. The radiopaque material is metal such as gold, tungsten, titanium, tantalum or platinum. The metal may also be in the form of a foil or wire located within the hydrogel such as polyurethane, thereby making the implant visible on x-rays. Other polymers besides hydrogel may be used with the radiopaque material being dispersed therein.

US Patent:

20080132882, Jun 5, 2008

Filed:

Nov 30, 2006

Appl. No.:

11/606632

Inventors:

Christopher DeMaria - Glen Rock NJ, US
Nicholas Jon LaVigna - Mountain Top PA, US
Thies Wuestemann - Nyack NY, US

Assignee:

Howmedica Osteonics Corp. - Mahwah NJ

International Classification:

A61B 17/56

US Classification:

606 1

Abstract:

In one aspect the present invention comprises a surgical tool. The surgical tool preferably includes a body having a cavity, and RFID electronic assembly, a first layer of first encapsulant formed around the electronic assembly and a housing insertable into the cavity. In accordance with this aspect of the present invention, a second layer of second encapsulant may be formed around the housing to hold it in place in the body cavity. In another aspect, the present invention preferably comprises an orthopedic instrument having a body which includes a cavity. Most preferably, a housing is located within the cavity, the housing preferably comprises a base member, a cap attached to the base and a glass dish attached to the cap, the glass dish being adapted to a loud frequency wave to pass through its body.

Address:

1456 Kensington Wood Dr, Lutz, FL 33549

VIN:

JTHBJ46G772025251

Make:

LEXUS

Model:

ES 350

Year:

2007