POROUS PROSTHESIS OF HIP JOINT

• Main Authors: DOSTA ANATOLIJ DMITRIEVICH, SAVICH VADIM VIKTOROVICH, RUTSKIJ ALEKSANDR VLADIMIROVICH, KSENEVICH EVGENIJ ANTONOVICH
• Format: Patent
• Language: English
• Published: 20.09.1999
• Edition: 6
• Subjects: BANDAGES, DRESSINGS OR ABSORBENT PADS; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; HUMAN NECESSITIES; HYGIENE; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MEDICAL OR VETERINARY SCIENCE; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PROSTHESES; TREATMENT OR PROTECTION OF EYES OR EARS

FIELD: medical equipment, applicable in traumatology and orthopedics for prosthetics of hip joint. SUBSTANCE: in prosthesis of hip joint consisting of a shaped pin made of inert material with pores and a tapered neck located in the upper part of the pin and a hip head secured on the neck the pin is bulk-porous with a through structure of pores; the porosity and dimensions of pores increase from the distal end to the proximal one, and the pore cavity is filled with a preparation stimulating regeneration. Besides, the pin is made with a variable porosity within 1 to 70% and variable dimensions within 5 to 200 ??m, and knurlings are made on the peripheral surfaces of its proximal part; the dimensions of knurling projections exceed the dimensions of the pin material particles by 1.5 to 50 times. The pin external surface has a granular structure, and its external surface is coated with an impermeable, biologically compatible with bone tissue coating easily removable in the organism. EFFECT: enhanced reliability of cementless fixation of prosthesis in bone. 5 cl, 3 dwg