Smith & Nephew Richards Inc.

Mayo Foundation for Medical Education and Research

Thomas B Buford, Iii

Jennifer J Lackey

Jeffrey G Roberts

Robert Brosnahan

James A Rand

James Clark

Scott Robinett

A fixation device for fastening a medical implant to a patient'3 s bone is provided which includes a fastener with a head member and a shank and a fixation member. The shank has threads along its whole length, and has an outside diameter greater than the width of the head member. The fixation member includes a bore for receiving the fastener. The bore has a diameter intermediate the width of the head member and the outside diameter of the threads of the shank. The head member of the fastener can thus be inserted into the bore such that the uppermost thread abuts against the underside of the fixation member to prevent the fastener from backing out.

Apparatus for fastening a medical implant

A plurality of various shaped wedges, each wedge having an upper and lower face, each face including a plurality of spaced aligned protrusions adapted to engage a plurality of channels formed in the under surface of the tibial base, the protrusions registering with the channels to allow positioning of the wedge relative to the shape of the tibial component in various positions along the edge of the component, so that the plurality of wedges may be positioned to align themselves with the edge of the tibial component, and therefore in addition to providing a spacer between the bone and the undersurface of the component, to be secured within the same confined area as the component.

System of inserts for the tibial component of a knee prosthesis

Growing community of inventors

Germantown, TN, United States of America

Thomas B Buford, Iii