ACETABULAR UNIT OF CEMENTLESS ANCHORAGE TYPE HIP JOINT ENDOPROSTHESIS Russian patent published in 1997 - IPC

FIELD: medical engineering. SUBSTANCE: device has metal cup and polymeric insert introduceable into internal cavity of the cup. Cuts are made on the spheric portion of the metal cup running from its top to the base forming movable segments. Transverse grooves are made in the area where the spheric portion of the cup is coupled with conic portion of the insert. Cross-pieces of the grooves serve as flexible supporting members. Rows of teeth with cutting edges are spaced over the external surface of the movable segments. Upper faces of the teeth are set tangentially relative to the trajectory of their movement in rotating relative to the flexible supporting member. The external surface of the conic portion of the metal cup is provided with multistart thread. EFFECT: accelerated assembly of hip joint prostheses. 2 dwg