Steve Lee Krebs

US Patent:

57349592, Mar 31, 1998

Filed:

Oct 12, 1995

Appl. No.:

8/542230

Inventors:

Steve Krebs - Fort Wayne IN
Clarence Panchison - Warsaw IN
H. Ravindranath Shetty - Warsaw IN

Assignee:

Zimmer, Inc. - Warsaw IN

International Classification:

B22F 310
B22F 704

US Classification:

419 2

Abstract:

The invention is directed to a method of forming an implant having a porous surface using an organic binder compound to enhance the bonding between the porous surface layer and implant. Preferably, the binder is formed from a water-soluble protein that carbonizes during the sintering process to alloy with the metal of the porous surface layer. The porous surface layer may be in the form of beads or of fiber metal and can be preformed to fit with an implant or formed over the surface of the implant.

US Patent:

56722842, Sep 30, 1997

Filed:

Mar 1, 1996

Appl. No.:

8/609210

Inventors:

Deva Devanathan - Warsaw IN
Steve Krebs - Fort Wayne IN
Steve T. Lin - Fort Wayne IN
James J. Morr - Leesburg IN
Clarence M. Panchison - Warsaw IN

Assignee:

Zimmer, Inc. - Warsaw IN

International Classification:

B23K 2600

US Classification:

21912164

Abstract:

A method of forming an orthopaedic implant having a porous surface, the method including the steps of providing a porous surface including a porous layer attached to a substantially solid layer; positioning the porous layer on the orthopaedic implant; providing a high energy density welding device capable of producing a high energy density weld beam; and forming a weld bead substantially about the periphery of the porous layer by directing the high energy density weld beam about the periphery of the porous layer, wherein the weld bead bonds the porous layer to the implant. Two shaped porous pads may also be welded together about an implant body to avoid welding the body itself.

US Patent:

55043003, Apr 2, 1996

Filed:

Apr 18, 1994

Appl. No.:

8/228774

Inventors:

Deva Devanathan - Warsaw IN
Steve Krebs - Fort Wayne IN
Steve T. Lin - Fort Wayne IN
Clarence M. Panchison - Warsaw IN
James J. Morr - Leesburg IN

Assignee:

Zimmer, Inc. - Warsaw IN

International Classification:

B23K 2600

US Classification:

21912164

Abstract:

A method of forming an orthopaedic implant having a porous surface, the method including the steps of providing a porous surface including a porous layer attached to a substantially solid layer; positioning the porous layer on the orthopaedic implant; providing a high energy density welding device capable of producing a high energy density weld beam; and forming a weld bead substantially about the periphery of the porous layer by directing the high energy density weld beam about the periphery of the porous layer, wherein the weld bead bonds the porous layer to the implant.

US Patent:

52514684, Oct 12, 1993

Filed:

Dec 14, 1992

Appl. No.:

7/990207

Inventors:

Steve T. Lin - Ft. Wayne IN
Mike Hawkins - Columbia City IN
Steve Krebs - Fort Wayne IN

Assignee:

Zimmer, Inc. - Warsaw IN

International Classification:

B24C 100
A61F 504

US Classification:

72 53

Abstract:

The method and material of this invention eliminates the necessity of removing imbedded particles remaining after shot blasting by providing a method for surface finishing an orthopaedic implant wherein the blasting medium is bioactive. The surface finishing with bioactive material may also be used to clean the porous surface after sintering or diffusion bonding. Since the particles are made from bioactive material, it is not a concern if particles remain in the porous surface after blasting.

US Patent:

59266856, Jul 20, 1999

Filed:

Jan 14, 1998

Appl. No.:

9/007033

Inventors:

Steve Krebs - Fort Wayne IN
Clarence Panchison - Warsaw IN
H. Ravindranath Shetty - Warsaw IN

Assignee:

Zimmer, Inc. - Warsaw IN

International Classification:

B22F 310

US Classification:

419 2

Abstract:

The invention is directed to a method of forming an implant having a porous surface using an organic binder compound to enhance the bonding between the porous surface layer and implant. Preferably, the binder is formed from a water-soluble protein that carbonizes during the sintering process to alloy with the metal of the porous surface layer. The porous surface layer may be in the form of beads or of fiber metal and can be preformed to fit with an implant or formed over the surface of the implant.

US Patent:

57737894, Jun 30, 1998

Filed:

May 23, 1996

Appl. No.:

8/652193

Inventors:

Deva Devanathan - Warsaw IN
Steve Krebs - Fort Wayne IN
Steve T. Lin - Fort Wayne IN
Clarence M. Panchison - Warsaw IN
James J. Morr - Panama City Beach FL

Assignee:

Bristol-Myers Squibb Company - New York NY

International Classification:

B23K 2600

US Classification:

21912164

Abstract:

An orthopaedic implant body is formed which has a supporting surface. A porous metal pad is formed to fit the supporting surface of the body. The porous metal pad is clamped and/or adhesively bonded to the supporting surface. A laser beam is coupled between the porous metal pad and the implant body at a plurality of locations so as to form a coalescence of metal between the porous metal pad and the body.

US Patent:

59732229, Oct 26, 1999

Filed:

Jan 16, 1998

Appl. No.:

9/008414

Inventors:

Deva Devanathan - Warsaw IN
Steve Krebs - Fort Wayne IN
Steve T. Lin - Fort Wayne IN
Clarence M. Panchison - Warsaw IN
James J. Morr - Panama City Beach FL

Assignee:

Bristol-Myers Squibb Co. - New York NY

International Classification:

A61F 230
A61F 228

US Classification:

623 16

Abstract:

The invention is directed to a method of making an orthopaedic implant. An orthopaedic implant body is formed which has a supporting surface. A porous metal pad is formed to fit the supporting surface of the body. The porous metal pad is clamped and/or adhesively bonded to the supporting surface. A laser beam is coupled between the porous metal pad and the implant body at a plurality of locations so as to form a coalescence of metal between the porous metal pad and the body.