Benoist Girard Sas

Andrew John Timperley

John Andrew Storer

Graham Allan Gie

Robin Sydney Mackwood Ling

Philippe Lavieille

Denis Pichon

Franck Le Bon

Robin Sydney Ling

Pascal Collet

Alain Richard

An acetabular rim cutter has an annular cutting face provided on a rotatable carrier. A coupler is provided for attaching the carrier to a rotational power source. A guide element is axially aligned with the cutting face to locate and align the cutting face on the acetabulum with which it is to be used. Preferably, the guide element is axially movable in relation to the cutting face and a resilient element is provided for biasing it axially away therefrom.

Acetabular rim cutter

A prosthetic implant cement deflector is provided for use in prosthetic surgery when employing an implant in the form of a cannulated phantom or trial prosthesis in combination with a cannulated or cannulated surgical prosthesis or a cannulated prosthesis without a phantom prosthesis. Each cannulated phantom prosthesis or cannulated prosthesis has an insert portion for location in a bone canal and a cannulation bore extending through the insert portion to receive a guide wire. The phantom includes at least one cement deflector element adapted to slide in sealing engagement on the guide wire and which can act to seal the interface between the guide wire and the surface of the distal end of the cannulation bore. The sheath used with the implant has a preformed unperforated sheath adapted to extend over the insert portion of the implant from its distal end to a position at or adjacent to its proximal end.

Prosthetic implant cement deflector and method of implantation

A prosthetic fixing plate comprises a component to be located into the acetabulum prior to the insertion of a prosthetic ball joint cap. The plate has a closure wall adapted to close the wall or rim of the acetabulum across any discontinuity therein, and a locator is provided for locating said closure wall in place. The fixing plate can be supplied in various sizes and arrangements, the correct plate being chosen by the surgeon after close examination of X-ray photographs of the patient and through the use of a template which is used to determine the size and arrangement of the discontinuity and thus the correct size and arrangement of the plate to be used.

Prosthetic acetabulum fixing plate

A femoral component of a replacement hip joint is provided which has a stem for fixing in cement in a medullary cavity by cement and having a separate proximal component provided with a neck for a ball head. An attachment system is provided for securing the proximal component to the stem which allows selection of an infinite number of angularly displaced positions about a proximal/distal axis, and adapted to allow fixation of the two parts after insertion of the stem into the prepared medullary cavity and without causing torsional loads on the stem. The stem extends proximally to the level of the bone cut which allows the proximal component to rotate after the stem is implanted. If an infinite number of angularly displaced positions is not required, then a Vernier coupling system with a large member of positions can be used.

Femoral component

A device for plugging the medullary canal of a bone to prevent the passage of locating cement and for centralising or guiding the stem of a prosthesis comprising a main body portion adapted to engage the wall of the canal to act as a plug and having a centralising or guide opening to receive the stem of the prosthesis.

Plugging and centralized device for locating the stem of a prosthesis

A prosthesis provided with a device for guiding its stem in a bone cavity and in which it is to be attached by cement. The sleeve guiding device comprises a sleeve having an opening to receive the stem and locate the sleeve on the stem at a position at or towards its proximal end. The is dimensioned and adapted to locate the stem in a predetermined position within the cross-sectional area of the bore of the bone cavity.

Prosthesis with centralizer and centralizer for use therewith

A prosthesis provided with a stem for fixation with cement in a bone socket, the proximal portion of the stem being provided with a number of shaped projections which are dimensioned to contact the inner wall of the bone socket and to act to guide the proximal end of the stem therein.

Growing community of inventors

St. Leonard's Exeter, United Kingdom

Andrew John Timperley