A tantalum-coated artificial hip prosthesis is provided, which overcomes the deficiency of the current artificial prosthesis coating, improves the fixation effect of the artificial prosthesis in human body, and prolongs the service life of the artificial prosthesis. The technical scheme of the utility model is to provide a tantalum coated artificial hip prosthesis, which comprises a prosthesis handle body, the handle body is extended upward into a handle neck, and the upper end of the handle neck is connected with a femur ball head, which is characterized that the external surface of the handle body is wrapped with a tantalum surface, and the tantalum surface is a microporous structure. The tantalum surface thickness is 30-800 micron, and the microporosity is 20%-50%. The handle as a round cylinder or cone, cylindrical cylinder or cone one end of the thin, the other end of the thick, and increase the width along a side, the upper part of the rough end of the inner arc extension, extension transition to the handle neck, the outside of the handle body is a straight line or arc shape and the handle neck base lateral intersection is 80-110° angular body.
The part of the outer surface of the handle body covered with tantalum surface is the outer surface of the handle body or any part of the handle body. Described in the femoral head with the hips white, white is by hemispherical metal hip hip cup and its internal hollow hemisphere shape of polyethylene liner polyethylene hollow hemispherical liner socket in the femoral ball head outside, polyethylene hollow hemispherical liner outside by a hemispherical metal hip socket white cup, described in the hips white cup outside surface coated with tantalum surface. The tantalum surface covered by the acetabular cup has a thickness of 30-800 microns and a porosity of 20%-50%. The handle body is medical stainless steel 00Crl8Nil4Mo3 or 00Crl8Nil5Mo3N or titanium or titanium Ti-6A1-4V or cobalt Chromium-molybdenum alloy Co30Cr6MO0.35C material as the matrix. Tantalum coating of this practical new type of artificial hip joint prostheses using high substrate material for prosthetic mechanical strength strong mechanical strength, ShiJia body under physiological load of the body and motion load under the condition of absence of material fatigue or failure, at the same time take good biocompatibility, corrosion resistance, wear resistance, high bonding strength of metal tantalum material as coating material, The contact part between the prosthesis matrix and the implanted human bone is covered with a layer of tantalum microporous coating, which not only strengthens and protects the surface of the prosthesis matrix, but also creates a microporous environment for the surface of the prosthesis, so as to increase the amount of bone growth and the stability of the prosthesis after implantation.
The utility model by artificial hip prosthesis handle body surface and the outer surface of the hips white cup three wrapped a layer of 30-800 microns, the porosity of 20% - 50% of the 6 tantalum surface, to increase the false on the surface of the body surface roughness and porosity, ShiJia body surface there are both rough surface and small pores of bone joint surface, increases the bone and prosthesis anchoring area, It also creates the precondition for the new bone tissue to grow into the pore, so that a bony joint is established between the implanted prosthesis and the human skeleton to achieve biological fixation, avoiding the loosening and sinking of the prosthesis, thus further ensuring the fixation effect and life of the prosthesis.
