Femoral fracture device
AssigneeSmith & Nephew Richards Inc.
InventorDavid L. Brumfield
Life of this patent
Estimating the term…
Abstract
An apparatus for treating fractures of the femur including a screw and an intramedullary rod. The screw has a threaded portion and a smooth portion. The rod has a head and a stem. There is at least one opening through the head of the rod in an angled direction toward the femoral head relative to the longitudinal axis of the rod. The opening is adapted to slidingly receive the screw to permit the threaded portion of the screw, in use, to engage the femoral head and to allow sliding compression of a femoral neck or intertrochanteric fracture. An optional second opening and second screw which will also allow sliding compression may be provided to prevent rotation and to adapt the fracture device to a variety of applications.
Claims6
Apparatus for treating fractures of the femur comprising:
- a) a hollowed intramedullary rod having a longitudinal axis and a rod sidewall that surrounds a longitudinal bore, said rod having a proximal head and a stem distal thereto, and wherein the stem and a substantial portion of the head are adapted in use for insertion into the marrow canal of a femur;
- b) the rod sidewall having a first, generally uniform smaller wall thickness defining the stem, and a second, larger wall thickness defining the head;
- c) said head having a first smooth opening extending therethrough in an angled direction relative to the longitudinal axis of said rod such that when said rod is in position within the marrow canal of the femur, the opening is positioned to intersect the longitudinal axis of the rod, and the axis of said opening is directed toward the head of the femur;
- d) a first screw for insertion through said first opening in said head and including first and second end portions;
- e) said first screw having a threaded surface formed at the first end adapted in use to engage bone tissue of the head of the femur, and
- f) wherein said threaded section is spaced from the first opening during use for maintaining continuous sliding contact between said head of said rod and the first screw, to permit sliding compression of the selected fracture.
Dependencies are inferred from the claim text.