FIELD: medicine.
SUBSTANCE: invention relates to medicine. Closed hip endoprosthesis comprises wedge-shaped leg with cone, spherical head, cup in form of a hemisphere with insert with spherical cavity for spherical head, open outside, conical elastic thin-wall corrugated shell, placed between insert and leg. Shell cavity is filled with liquid bioinert substance. Insert butt is equipped with external annular projection. One of shell ends of larger diameter is reinforced with ring forming angular contact slide bearing together with butt and insert ring-shaped projection, and other end of smaller diameter is reinforced with ring with inner conical hole, forming fixed tight joint with leg cone. On cylindrical contacting surfaces of projection and insert and reinforcing shell ring circular grooves are made, in which split elastic locking ring of round section is placed. Liquid bioinert substance contains carbon nanoparticles to decrease friction of movable surfaces of head, reinforcing ring and insert.
EFFECT: invention provides increased service life of endoprosthesis, improved quality of patient's life due to increase of time before endoprosthesis exploring replacement surgery.
1 cl, 3 dwg
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