Depuy Products, Inc.

Codman & Shurtleff, Inc.

Carleton Bryan Southworth

Alan Dextradeur

Daniel J McCusker

Rainuka Gupta

A locking assembly is provided to simply and effectively prevent any unintentional adjustment of the adjustable valve mechanism in a fluid flow control device, without compromising the function of the device. The locking assembly generally includes at least one gripping arm for frictionally engaging at least a portion of the adjustable valve mechanism, and an actuating mechanism for controlling the deployment and release of the gripping arm. The locking assembly prevents unintentional adjustments that can adversely affect the pressure settings of the fluid flow control device. In particular, the locking assembly prevents unintentional adjustment, such as may be caused by the presence of a strong external magnetic field. The locking assembly can be easily disengaged, such as through the application or removal of an external mechanical force, to allow a clinician to adjust the pressure settings of the fluid flow control device as necessary.

Shunt valve locking mechanism

Position reference members are provided as part of an orthopaedic implant system. Both position reference members can be implanted on or in the same bone as the other parts of the implant. One of the position reference members is fixed to the bone and the other position reference member is movable with another part of the implant, such as a stem received in the intramedullary canal. The movable position reference member can move with respect to the fixed position reference member. At least one of the position reference members includes indicia such as a main scale or a vernier scale. Parts of the indicia and position reference members are radio-opaque and parts are radiolucent. Post-operative changes in the relative positions of the position reference members can be measured by radiography or fluoroscopy so that changes in the implant position can be monitored over time.

Implant system with migration measurement capacity

A prosthetic orthopaedic head has a fluid chamber defined therein. A fluid filter is positioned in the fluid chamber. In response to a load being exerted on the prosthetic head, synovial fluid is advanced through a filter thereby removing debris from the synovial fluid. A method of operating a prosthesis is also disclosed.

Apparatus and method for advancing synovial fluid in a prosthetic joint

A joint prosthesis ( ) for cooperation with a long bone ( ) and a second bone ( ) for use in arthroplasty is provided. A cavity ( ) is formed in the long bone ( ) and defined by an inner wall ( ) of the long bone ( ). The prosthesis ( ) includes a stem component ( ) including a distal portion ( ) of the stem component ( ) for placement at least partially within the cavity ( ) of the long bone ( ) and for securing to the long bone ( ). The stem component ( ) defines a longitudinal axis ( ) of the stem component ( ). The prosthesis ( ) also includes a second component ( ) securable to the second bone ( ) and for cooperation with the stem component ( ). The prosthesis ( ) further includes a bearing ( ) for placement in the cavity ( ) between the stem component ( ) and the long bone ( ) so that the distal portion of the stem component ( ) is spaced from the inner wall ( ) of the long bone ( ).

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Warsaw, IN, United States of America

Carleton Bryan Southworth