Kim Conrad Bertin
Physician in Salt Lake City, UT

RE39301, Sep 19, 2006

Aug 16, 1996

08/698781

Kim C. Bertin - Salt Lake City UT, US

Zimmer, Inc. - Warsaw IN

A61B 17/00, A61B 19/00, A61F 2/38

606 88, 623 2014, 128898, 606 86

A method and apparatus for knee replacement surgery wherein a femoral provisional component is provided which corresponds to a permanent component to be implanted in a human and which includes means for establishing the correct fit and position of such a component, prior to its implantation, in relation to the soft tissues of the knee before final resection of the anterior femoral surface. The provisional component further includes cutting guide means for such anterior surface resection such that accurate cuts may be made with the provisional component in place. The method involves preparing the distal femoral surface using the femoral intramedullary canal as a constant reference point for posterior and distal cutting guides followed by locating the provisional component by means of a provisional intramedullary stem so that the relationship with the soft tissues of the knee may be accurately established.

7935120, May 3, 2011

Apr 29, 2005

11/118168

Adam M. Griner - Columbia City IN, US
Kim Bertin - Salt Lake City UT, US
Richard Berger - Chicago IL, US
Ron Donkers - Warsaw IN, US

Zimmer Technology, Inc. - Warsaw IN

A61B 17/56

606 88, 606 86 R

A method of preparing the proximal tibial and distal ends of the femur for the implantation of prosthetic components, including the steps of exposing the joint; resecting the distal end of the femur; resecting the tibia; and making a preliminary rough cut of a posterior portion of the pair of condyles. The rough cut is made by positioning a guide on the distal end of the femur and severing a small piece of the posterior portion of the pair of condyles. The rough cut is made prior to the step of resecting the tibia. The method may include finishing the femur by severing and removing a final piece of the posterior portion of the pair of condyles. The small piece removed in the preliminary rough cut step is sized to preserve enough of posterior portion to permit the removal of the final piece.

8137407, Mar 20, 2012

Mar 9, 2005

11/075464

Dwight T. Todd - Columbia City IN, US
Brian D. Byrd - North Webster IN, US
James C. Harris - Warsaw IN, US
Kim C. Bertin - Salt Lake City UT, US
Linggawati Tanamal - Singapore, SG
Peter S. Walker - New York NY, US

Zimmer, Inc. - Warsaw IN

A61F 2/38

623 2033, 623 2015

A mobile bearing knee prosthesis apparatus includes a tibial plate. The tibial plate includes a medial lobe and a lateral lobe conjoined in a dividing plane. The apparatus further includes a tibio-femoral insert and a stud-like protuberance extending from the tibial plate into the tibio-femoral insert. The stud-like protuberance includes a protuberance sidewall positioned in the tibio-femoral insert. The protuberance sidewall is bisected by the dividing plane and includes a pair of opposing eccentric convex arcuate portions, and the tibio-femoral insert is moveable relative to the tibial plate about an axis medially disposed from the dividing plane. A mobile bearing knee prosthesis apparatus includes a tibial plate and a tibio-femoral insert coupled to the tibial plate. The tibio-femoral insert includes a generally posteriorly positioned chamfered superior surface and defines a generally posteriorly positioned generally U-shaped space bounded at least in part by the chamfered surface.

4759350, Jul 26, 1988

Oct 17, 1986

6/919971

Harold K. Dunn - Salt Lake City UT
Kim C. Bertin - Salt Lake City UT

A61F 504

128 92VW

The present invention provides a system of instruments for shaping the distal femur and proximal tibia surfaces to receive components of a knee prosthesis for knee replacement surgery. The system references the femur intramedullary channel with a femoral alignment guide to prepare the distal femur that, in turn, is a reference for several cutting guides for sequential attachment to the femoral alignment guide and prepared bone surfaces whereby the prepared distal femur is prepared to a flat surface that is perpendicular to the patient's mechanical axis with bone surfaces adjacent thereto sectioned to surfaces that are at right angles to that distal femur surface with chamfers therebetween to receive the femur component of a knee prosthesis. A tibial cutting guide is provided for preparing the proximal tibia that consists of a sleeve, with a tube telescoped therein, the ends thereof including pin arrangements for connecting them into the tibia, between the ankle and near the proximal tibia, an open tube end of the tibial cutting guide to receive a rod telescoped therein that mounts a cutting guide platform and includes a screw arrangement for releasably maintaining the rod and tube together. The cutting guide platform includes a body with a saw guide slot formed therethrough to receive a saw blade to cut across the proximal tibia to form a surface for accommodating a tibial component of the knee prosthesis, the cutting guide platform body further including an arrangement for securing it to the tibia, slightly below the proximal tibia, and a tibial resection guide for setting a depth of cut across the proximal tibia.

5700268, Dec 23, 1997

Jan 6, 1997

8/778848

Kim C. Bertin - Salt Lake City UT

Zimmer, Inc. - Warsaw IN

A61B 1756

606102

A device for use in an orthopedic surgical procedure for replacement of a patient's hip that, prior to dislocation of the pathologic hip, is used by the surgeon to determine leg length and leg displacement, with these measurements then used as references for reproducing or adjusting leg length and positioning. The device includes an ilium pin that is to be driven into the patient's ilium to serve as a fixed reference. Preferably, the ilium pin includes a pair of pointed end portions, the one forking off from the other, with the ilium pin top end arranged to be driven into the ilium using a driver. A straight measuring bar that includes an ilium mounting end is arranged for fitting onto the ilium pin to extend at a right angle therefrom and a scale is formed around the opening through the ilium mounting end and a radial indicator is scribed into the top of the ilium pin, for use in determining femur medial or lateral displacement. The measuring bar includes a scale scribed therealong and is arranged to receive a femoral slide fitted to slid over the scale, whereby a femoral slide side is to serve as an indicator for comparison to the scale markings for determining femoral slide positioning from the ilium pin. The femoral slide further includes a hole formed therethrough that a straight femoral pin is fitted through, forming a right angle to the measuring bar, the femoral pin having, has a pointed end to contact a fixed location on the proximal femur.

5019108, May 28, 1991

Feb 2, 1990

7/474161

Kim C. Bertin - Salt Lake City UT
Harry E. Rubash - Pittsburgh PA

A61F 232

623 23

A modular hip implant for left or right side installation as a femoral implant portion of a hip prosthesis. The implant is preferably utilized in a surgical procedure addressing fractures of the femoral neck and may inclue a lateral opening formed through a proximal portion of the implant for receiving a fenestration plug for installation thereover. Which fenestration plug is for use where the implant is to be cemented in place, and is not installed when the implant is for friction seating implantation. For ease of installation, the implant includes a stem that tapers inwardly along three sides, the anterior, medial and posterior, to the implant end, the corners or junctions of which sides are rounded. The implant is also tapered at the proximal portion, inwardly from its lateral straight side to its medial side, for providing, when press fitted into a prepared medullary channel, a wedging therein. The proximal portion of which implant may be roughened to encourage cancellous tissue growth thereto, and includes a lateral hole therethrough that is to receive a tool for turning and lifting the implant for its removal.

2008009, Apr 24, 2008

Sep 14, 2006

11/521852

Jeffrey D. Brown - Warsaw IN, US
Charles A. Baldridge - Warsaw IN, US
Kim C. Bertin - Salt Lake City UT, US
Toby N. Farling - Warsaw IN, US
Adam M. Griner - Columbia City IN, US
Robert A. Hodorek - Warsaw IN, US

A61B 17/58, A61B 17/08

606 88, 606151

A patella clamp is provided for clamping a patella. The patella clamp includes a first clamp member engageable with the patella and a second clamp member mountable in opposing relative moving relationship to the first clamp member. The patella clamp may be used to perform a variety of procedures on a patella. In one embodiment, a third clamp member is alternatively mountable in place of the second clamp member to change the function of the patella clamp. The patella clamp optionally further includes a cut guide for guiding a cutter in a cut plane to resect a portion of the patella.