Artificial hip joint femoral stem
A technology for hip joints and femoral stems, applied in the direction of hip joints, femoral heads, joint implants, etc., can solve problems such as failure of artificial hip joint femoral stem implants, and achieve the effect of preventing loosening
Inactive Publication Date: 2009-09-09
曼德卡姆有限公司
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Problems solved by technology
In recent years, with the advancement of industrial technology, new types of artificial hip joint femoral stems have emerged. For example, high-temperature spraying of alloy powder, high-temperature spraying of bioceramic powder, sintered metal microbeads, and mechanically processed Grooves, uneven rough surfaces, etc., the main purpose of which is to increase the contact area and friction between the femoral stem of the artificial hip joint and the bone to delay the loosening of the femoral stem of the artificial hip joint, but the grooves and rough surfaces formed by the above methods Due to the long-term wear and tear of the articular surface, the degenerative atrophy of bone cells caused by osteolysin is still inevitable. Therefore, the separation and loosening of the interface between the femoral stem and the bone of the artificial hip joint is still possible. Leading to the final failure of artificial hip joint femoral stem implantation
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[0022] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 As shown, a femoral handle of artificial hip joint of the present invention is characterized in that it comprises a head 1, a neck 2 and a handle body 3, the surface of the handle body 3 is integrally formed with a three-dimensional mesh body 4, and the surface of the three-dimensional mesh body 4 has There are a plurality of holes 5 from the surface to the inside, and the three-dimensional network body 4 has a transverse channel 6 connecting part or all of the holes 5 from the surface to the inside.
[0023] The processing method that the artificial hip joint femoral stem of the present invention adopts is: set up the solid model of the artificial hip joint femoral stem with a three-dimensional network body in an electronic computer, and then adopt laser or high-energy electron beam processing method to melt and form, and can also use electric spark machining, Chemical etching and other me...
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The invention relates to an artificial hip joint femoral stem. The artificial hip joint femoral stem comprises a head part, a neck part and a stem body, wherein an integrated three-dimensional network body is formed on the outside surface of the stem body; the surface of the three-dimensional network body is provided with a plurality of blind holes penetrating deeply into the surface of the stem body; the inside of the three-dimensional network body is provided with a transverse porouschannel communicated with part of or all blind holes, and the transverse porouschannel is a single-layer porouschannel or a multi-layer porouschannel. Therefore, after the artificial hip joint femoral stem is installed in a patient, osteocytes can be tabled and grow into vertically and horizontally communicated meshes in the three-dimensional network body and be circularly locked so as to reach the action of effectively preventing the looseness between the artificial hip joint femoral stem and bone substances for long.
Description
technical field [0001] The invention relates to an artificial hip joint femoral stem. Background technique [0002] Artificial hip replacement surgery has become a relatively common surgical operation in the medical field. However, how to maintain the stability of the artificial hip femoral stem in the femoral medullary cavity as an implant in the femur is still a subject that is constantly being explored in various aspects. topic. In recent years, with the advancement of industrial technology, new types of artificial hip joint femoral stems have emerged. For example, high-temperature spraying of alloy powder, high-temperature spraying of bioceramic powder, sintered metal microbeads, and mechanically processed Grooves, uneven rough surfaces, etc., the main purpose of which is to increase the contact area and friction between the femoral stem of the artificial hip joint and the bone to delay the loosening of the femoral stem of the artificial hip joint, but the grooves and r...
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IPC IPC(8): A61F2/36A61L27/32
CPCA61F2/36A61F2002/30001
Inventor 汉斯·爱瑞克森
Owner 曼德卡姆有限公司