Conical self-locking part femoral head replacement device for personalized customization of reserved femoral head

• Main Authors: HAN YONGTAI, LI MENGNAN, MA YONGBO, LIU ZEMING, WU TAO, LIU YANSONG, ZHAO LIWEI, DING XUZHUANG, ZHANG BINGSHI
• Format: Patent
• Language: Chinese; English
• Published: 18.08.2023
• Subjects: BANDAGES, DRESSINGS OR ABSORBENT PADS; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PROSTHESES; TREATMENT OR PROTECTION OF EYES OR EARS

The invention provides a personalized customized conical self-locking part femoral head replacement device for retaining a femoral head, and relates to the field of medical instruments. The replacement device comprises a base and a joint prosthesis. The base comprises a bone nail and an auxiliary fixing piece, the bone nail is provided with a near end and a far end, and the auxiliary fixing piece and the near end of the bone nail are integrally formed; the joint prosthesis and the auxiliary fixing piece are detachably connected in a Morse self-locking mode. The far end of the bone nail is nailed into the femoral neck medullary cavity through the top of the femoral head, and the replacement device can be fixed to the femoral head subjected to partial conical osteotomy. The auxiliary fixing piece can increase the contact face of the base and the femoral head, under the condition that the joint prosthesis only replaces the necrotic part of the femoral head, sufficient axial and rotating initial stability can be