SU465199A1 - Hip joint endoprosthesis - Google Patents

Description

one

This invention relates to medicine, more specifically to endoprosthetics, and concerns a hinge hip joint endoprosthesis.

A hip joint endoprosthesis is known that has a hinged joint, which contains the femoral head, made in the form of a figured rod with a spherical head, and an elastic-elastic cap that is hinged to it.

In the proposed endoprosthesis, in contrast to the known one, the cap is made in the form of a hollow ball with a cut-off segment, the diameter of which is less than the diameter of the femoral head, and has an annular groove on the outer surface at the end with a ring with a groove inserted in it, which can be fastened by a fastening wire.

This embodiment of the cap ensures its self-holding on the head of the thigh.

FIG. 1 shows the hinge endoprosthesis of the hip joint; in fig. 2 - cap element. .

The hip joint endoprosthesis contains a head of the femur, made in the form of a figurative rod 1 with a spherical head 2, and a cap 3. The figured rod 1 is attached in the bone-marrow channel of the femur 4. Self-retaining pivotally connected to the head 2, an elastic-elastic cap 3 is formed as an elastic-elastic cap 3 made into a form of a form a ball with a cut-off segment, tightly inserted into the natural acetabulum 5 and having an annular groove 6 on the outer surface at the end, with a ring 7 inserted into it with a groove, pull-up wire 8. In the process The hip joint spherical head 2 slides along the inner surface of the self-retaining cap 3 which is hinged to its hinge, and remains stationary after being firmly inserted into the natural acetabulum 5, while preventing the wire 8 from pulling through the ring 7 along the groove 6 of the acetabulum 5, thus preventing the wire 8, pulling through the ring 7 along the groove 6, the cap 3, preventing the head 8 from turning out of the acetabulum 5. At the same time, the wire 8, pulling through the ring 7 along the groove 6, the cap 3, prevents the head 8 from turning out of the acetabulum. from cap 3 of spherical head 2.

Subject matter

A hip joint endoprosthesis that contains the femoral head in the form of a figured rod with a spherical head and an elastic-elastic cap that is articulated with it is characterized by the fact that, in order to self-retain the cap on the femoral head, the cap is designed in the form of a hollow ball with a severed segment

the diameter of which is less than the diameter of the femoral head, and has an annular groove on the outer surface at the end with a ring with a groove inserted in it, a ring with a groove, which can be pulled out by a fastening wire.