Hip prosthesis with adjustable head
OwnerKlaus Draenertinventor
Life of this patent
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Abstract
The invention relates to a hip joint prosthesis and its use in hip joint surgery. Essentially, the construction of the prosthesis is a laterally open hollow body whose cross-section (31) is horseshoe-shaped. This allows ideal adaption to the lines of load transfer. It is preferable for the prosthesis to comprise a laterally open hollow body as the stem (3), a more solid neck portion (2) and a head (1), which can be multidimensionally adjusted on the neck portion. The prosthesis can also be a complete implant with the construction of a straight-stemmed prosthesis having S-shaped mass distribution.
Claims14
A hip joint endoprosthesis comprising:
- an elongated stem having an end;
- and
- a head portion mounted on the end of the elongated stem with an adjustable connection, the adjustable connection allowing the head portion to be independently adjustable relative to the elongated stem in a first dimension and in a second dimension.
A hip joint endoprosthesis comprising:
- an elongated stem having an end and defining a longitudinal axis;
- and
- a head portion mounted on the end of the elongated stem with an adjustable connection, the adjustable connection allowing independent sliding of the head portion relative to the elongated stem in a first dimension to change a distance of the head portion from the longitudinal axis.
A hip joint endoprosthesis comprising:
- an elongated stem having an end and defining a longitudinal axis;
- and
- a head portion mounted on the end of the elongated stem with an adjustable connection, the adjustable connection allowing independent tilting of the head portion relative to the elongated stem.
A hip joint endoprosthesis comprising:
- an elongated stem having an end and defining a longitudinal axis;
- and
- a head portion mounted on the end of the elongated stem with an adjustable connection, the head portion and the elongated stem together defining a length of the hip joint endoprosthesis, the adjustable connection allowing axial movement of the head portion relative to the elongated stem to adjust the length of the hip joint endoprosthesis;
- and
- means for firmly fastening the head portion relative to the elongated stem at a selected axial position after adjustment.
Dependencies are inferred from the claim text.