Synvasive Technology, Inc.

Depuy Products, Inc.

Synvasive Technology, Inc. a California Corporation

Kevin M Cordes

Michael G Fisher

Anthony K Hedley

Michael J Howard

Toshinobu Katsuya

Russell Todd Nevins

Jack F Long

Roy Werner Sanders

Kenneth Dale Johannaber

Brian J Maroney

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 method for positioning a bone cut on a bone may involve: coupling a bone cut positioning apparatus with a body bone; adjusting the positioning apparatus in a varus/valgus orientation relative to the body bone; adjusting the positioning apparatus in an anterior/posterior orientation relative to the body bone; and adjusting the positioning apparatus up or down to select a bone resection level.

Bone positioning device and method

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 a moral 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 pressure sensing

A method for positioning a bone cutting guide on a tibia may involve coupling a cutting guide positioning apparatus with a tibia, adjusting the positioning apparatus in a varus/valgus orientation, adjusting the positioning apparatus in an anterior/posterior orientation, adjusting the positioning apparatus up or down to select a tibial bone resection level, and contacting a cutting guide with the tibia, using the adjusted positioning apparatus.

Knee arthroplasty apparatus and method

A device for performing a surgical procedure on a knee comprises a femoral assembly comprising a stationary femoral member attachable to the distal femur, an adjustable femoral member movably coupled with the stationary member to adjust tension in at least one ligament of or adjacent the knee and an adjustment mechanism coupled to the assembly. The adjustable member includes at least one positioning feature that moves relative to the distal femur as the adjustable member is adjusted and identifies at least one position on the distal femur. The adjustable member is movably couplable with a tibial member engaged with a proximal tibia to allow the knee to be moved through a range of motion without removing the femoral and tibial members. The mechanism includes an actuator positioned proximate a medial or lateral portion of the adjustable member. The actuator is configured to adjust an opposite portion of the adjustable member.

Dynamic knee balancer with opposing adjustment mechanism

Dynamic knee balancing devices, systems and methods provide for enhanced total knee arthroplasty ('TKA') procedures. Devices generally include a stationary femoral member for removably attaching to a distal femur and an adjustable femoral member coupled with the stationary member for adjusting ligament tension of the knee. The adjustable femoral member includes at least one positioning feature for providing positional and/or orientation information for facilitating the TKA procedure. Additionally, the adjustable femoral member is movably couplable with a tibial member engaged with the proximal tibia to allow movement of the knee through a range of motion without removing the device from the joint space. When the adjustable femoral member is adjusted, the positional feature(s) move relative to the distal femur to provide positional information.

Dynamic knee balancer

A saw blade comprising a blade body having a longitudinal axis, a cutting means disposed at a first end of the blade body and a prearranged hub section having an outer periphery located at a second end of the blade body is shown. The prearranged hub section comprises an elongated slot formed in the hub section which extends from the outer periphery along a longitudinal axis to a U-shaped cut-out forming a hub center. The hub center is located along the longitudinal axis. The hub section includes a plurality of slots, each of the slots having a generally rectangular elongated blade driving enabling section having one end which terminates in an expanded bulbous blade driving disabling section in a position opposed to the hub center. The respective generally rectangular elongated blade driving enabling section are disposed in a pattern along a radius centered at the hub center. The respective generally rectangular elongated blade driving enabling section of each slot being configured for engaging a selected blade driving structure and for disengaging from a different blade driving member.

Saw blade having a prearranged hub section

A kit () for resection of bone () for use in implantation of a joint prosthesis () is provided. The kit () includes a guide (), a tool () and a stop (). The guide () defines an opening () through the guide (). The guide () is in cooperation with the bone (). The tool () may be constrained within the opening () of the guide (). The tool () includes a cutting edge () for resection of bone (). The stop () cooperates with the guide () and the tool () to limit the movement of the tool () within the guide () so that the position of the cutting edge () with respect to the bone ()may be controlled. The stop () includes a plurality of positions () with respect to the tool () and the guide ().

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Placerville, CA, United States of America

Kevin M Cordes