Bone fastener for the greater trochanter
OwnerDesmond M. Dall, Anthony W. Milesinventors
Life of this patent
Estimating the term…
Abstract
An implant of H shape for use in bone surgery, specifically in re-attaching the greater trochanter after osteotomy. The cross-bar (28) of the H forms a bridge and has two longitudinal holes (24) in it for receiving a tying cable (22). At each end of each limb (32, 36) of the H there is a tooth (34, 38) which is either impaled in, or fits around, the trochanter or other bone. The limbs can be straight in the region of the bridge or can be markedly curved. The teeth all lie on the same side of the structure constituted by the limbs and bridge, and, where the limbs are curved, lie on the inside of the curve.
Claims12
An implant for use in bone surgery, the implant comprising a base structure including a pair of limbs joined by a bridge, the bridge being bounded by a front face, a rear face and edge faces, a plurality of teeth protruding from the base structure, all the teeth lying on the same side of the base structure, and a hole in the base structure for receiving a cable, the hole being elongate in form, extending lengthways through the bridge, and being open at each end.
A method of re-securing the greater trochanter which comprises drilling a hole through the femur, passing a multi-filament cable through the hole in the femur, placing against the trochanter an implant comprising a base structure including a pair of limbs joined by a bridge, the bridge being bounded by a front face, a rear face and edge faces, a plurality of teeth protruding from the base structure, all the teeth lying on the same side of the base structure, and a hole in the base structure for receiving the cable, the hole being elongate in form, extending lengthways through the bridge, and being open at each end, feeding the ends of the cable into said hole from opposite ends thereof in such manner as to pull the implant against the trochanter so that the teeth are embedded therein, and crimping said bridge to secure said cable to the implant.
A method of re-securing the greater trochanter which comprises drilling a hole through the femur, passing a multifilament cable through the hole in the femur, placing against the trochanter an implant comprising a base structure including a pair of limbs joined by a bridge, the bridge being bounded by a front face, a rear face and edge faces, a plurality of teeth protruding from the base structure, all the teeth lying on the same side of the base structure, and two holes in the base structure for receiving the cable, the holes being elongate in form, extending lengthways through the bridge, and being open at each end, feeding the ends of the cable one into each of said holes from opposite ends thereof, pulling the cable tight to urge the implant against the trochanter so that the teeth are embedded therein, and crimping said bridge to secure said cable to the implant.
Dependencies are inferred from the claim text.