Synvasive Technology, Inc.

Zimmer Gmbh

Sevika Holding Ag

Consortia Development, Inc.

Sierra Surgical Inc.

Depuy Products, Inc.

Synvasive Technology, Inc. a California Corporation

Synasive Technology, Inc.

Michael G Fisher

Kevin M Cordes

Anthony K Hedley

Kenneth Dale Johannaber

Barjinder S Chana

John Anes

Michael J Howard

Toshinobu Katsuya

Henry Hasbrouck Fletcher

Andrew P Sizelove

David Wycliffe Murray

Keith R Berend

Russell Todd Nevins

Kevin Cordes

Michael Haight

Leo Beckers

Michael Howard

Jack F Long

Roy Werner Sanders

Jody L Claypool

David G Lewallen

Stephen M Howell

Stephen Edward White

Brian J Maroney

Steven E Stump

Wayne Paprosky

Jeffrey D Gordon

Paul R Johnson

Jon C Schenberger

James G Bradley

Joe Nemeth

Russel T Nevins

Steven Stump

David Murray

Barjinder Singh Chana

A disc launching device includes a long handle and a disc holder at one end of the handle. The handle may include a grip end for holding the handle, an attachment end opposite the grip end, and a shaft extending from the grip end to the attachment end. The disc holder is attached to the attachment end of the handle. It includes a front rail for holding one side of a disc, a back rail for holding an opposite side of the disc, and at least one support member extending between the front rail and the back rail. The front rail and the back rail form an opening on one side of the disc holder, configured to allow the disc to launch out of the disc holder through the opening when sufficient forward momentum is applied to the disc holder via the handle.

Disc launching device

A multi-purpose measurement tool comprises an elongate beam and a slide. The elongate beam extends from a first end to a second end, and comprises a first fixed jaw, a second fixed jaw, and a track. The first fixed jaw extends from the beam at the first end. The second fixed jaw extends from the beam opposite the first jaw and spaced from the first end. The track extends across the elongate beam through the first end. The slide has a first end extending from the track and a second end extending into the track. The slide has a moveable jaw extending from the slide opposite the first fixed jaw. The slide can also have a front face and a back face, each face with readable measurement indicia thereon.

Disposable multi-purpose tool for total knee arthroplasty

A device for performing a surgical procedure on a knee includes an adjustable femoral portion, a tibial portion and at least one sensor coupled with the femoral and/or tibial portions to sense pressure exerted by the femoral and tibial portions against one another. The femoral portion is adapted for removably coupling with a distal end of a femur to adjust tension in soft tissue adjacent the knee and has at least one positioning feature adapted to move relative to the distal end of the femur as the femoral portion is adjusted, thus helping position a femoral prosthetic on the distal end of the femur. The sensor(s) may be adapted to sense pressure at medial and lateral sides of the knee, and relative pressures may be displayed as data on a visual display. Adjustments to the femoral member may be made to balance pressure at flexion and extension of the knee.

Dynamic knee balancer with force or pressure sensing

A system is provided for positioning a cutting guide on a femur of a knee to make a cut along a distal end of the femur during knee surgery. The system may generally include an adjustable femoral attachment member configured to attach to a cut distal end of the femur, a cutting guide removably attachable to the femoral attachment member and configured to guide a surgical saw to make an additional cut on the distal end of the femur, and a force sensor for positioning between the femoral attachment member and a proximal end of a tibia of the knee. The force sensor may include a medial portion for sensing a medial force in the knee and a lateral portion for sensing a lateral force in the knee.

System for positioning a cutting guide in knee surgery

Systems, devices, and methods are provided for measuring forces in the space of a knee during surgery. Such forces can be caused by tension in the ligaments of the knee. A femoral member is engaged with a distal femur. While the knee is flexed, partially extended, or fully extended, a force sensor and a gauge shim can be placed in the gap between the femoral member and the tibial plateau to measure the forces therebetween. The force sensor provides an accurate and quantifiable measurement of force, making knee replacement surgery and ligament tension balancing more accurate, standardized and repeatable. The force sensor comprises an elongate housing which comprises a thin force sensing distal portion and a proximal handle portion.

Sensing force during partial or total knee replacement surgery

Sensing force during partial and total knee replacement surgery

Devices, systems, and methods are provided for facilitating the aligning and balancing of the knee during total knee replacement surgery. A femoral assembly is engaged with a distal femur. The positions of medial and lateral portions of the femoral assembly relative to a stationary portion of the femoral assembly can be separately adjusted to adjust the alignment of the knee. A force sensor will be provided to sense the forces in the medial and lateral portions of the knee, and the medial and lateral portions of the femoral assemblies will be adjusted so that the sensed forces are balanced. The alignment of the knee is visually verified using a knee alignment verification member coupled to the femoral assembly. The knee alignment verification member may emit laser beams along the mechanical axes of the femur and tibia, or the knee alignment verification member may couple to alignment rods aligned along these axes.

Force sensing distal femoral alignment system and method of use

A method for positioning a bone cutting guide on a tibia may begin with coupling a bone cut positioning apparatus with a tibia. The method may also include adjusting the positioning apparatus in a varus/valgus orientation to shine a light emitted by a light emitter approximately along a midline of an anterior surface of the tibia, swinging a pivoting arm about a pivot joint to direct the emitted light along a medial surface of the tibia, adjusting the positioning apparatus in an anterior/posterior orientation to shine the light approximately along a midline of the medial surface, contacting a stylus with a proximal end of the tibia to select a cutting depth for a bone cut to be made on the tibia, and attaching the bone cutting guide to the tibia in a position determined by the positioning apparatus.

Bone positioning device and method

Methods, systems and devices are provided for facilitating a surgical procedure on a knee, particularly, a revision total knee replacement procedure. Prior femoral and tibial prostheses are removed. A cut end of a distal femur is engaged with a femoral adjustment member, which will typically center itself about an intermedullary rod placed into the femur. The lateral and medial forces exerted by lateral and medial sides of the femoral adjustment member and the cut tibial plateau against each other are measured. The femoral adjustment member is adjusted to apply and or adjust tension to the lateral collateral ligament and/or the medial collateral ligament based an the measured forces, for example, such that the measured lateral force and the measured medial force are matched. Based on the position of the adjusted femoral member, guided clean-up cuts for placement of a new femoral prostheses are made on the cut end of the distal femur.

Knee balancing for revision procedures

Systems for determining force balance on a knee joint during a surgical procedure are disclosed. A system can include a tibial prosthesis. The tibial prosthesis can include a bearing component, a base component, and a shim component. The bearing component can have a superior articulating surface and an inferior surface. The bearing component can include a top portion, a bottom portion, a frame disposed between the top portion and the bottom portion, and a plurality of sensors disposed between the frame and the bottom portion. The frame can have a plurality of apertures corresponding in size or shape to the plurality of sensors. The base component can have a superior surface and an inferior surface. The shim component can be configured to be slidable between the inferior surface of the bearing component and the superior surface of the base component in an anterior to posterior direction.

Tibial prosthesis systems, kits, and methods

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Folsom, CA, United States of America

Michael G Fisher