Improved artificial hip joint femoral stem with rough film and preparation method thereof

Abstract

The invention relates to an improved artificial hip joint femoral stem which is characterized in that the improved artificial hip joint femoral stem is cast or forged, and then a rough medical metal film is formed on the corresponding surface, being in contact with a bone of a patient, of the femoral stem through additive manufacturing. The strength and mechanical properties of the femoral stem are guaranteed by casting and forging, and then the optimal roughness is customized for the rough film through the additive manufacturing, so that bone attachment or bone ingrowth can be facilitated to the maximum. The improved artificial hip joint femoral stem is suitable for a bone joint replacement surgery for human hip joint lesions.

Description

technical field [0001] The invention relates to an artificial joint in the field of medical bone joints, in particular to an improved artificial hip joint handle. Background technique [0002] The artificial hip joint stem is a human implant, which is used as a replacement for human femoral medullary cavity when the human hip joint disease requires orthopedic replacement surgery, so that the patient can restore the physiological function of the hip joint to a certain extent, relieve pain, and improve movement. and improve quality of life. [0003] In the prior art, the artificial hip joint femoral stem can be made by casting or forging, and then a rough thin layer is formed on the stem body (1) by sandblasting, or hydroxyapatite or titanium is thermally sprayed on the stem body (1 ) to form a rough thin layer; the femoral stem of the artificial hip joint and the rough surface thin layer can also be made integrally through additive manufacturing. However, the surface roughn...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an improved artificial hip joint stem, which can customize the surface roughness most suitable for bone attachment and bone ingrowth for the femoral stem under the premise of ensuring mechanical properties and mechanical strength, and overcome the existing artificial hip joint Defects of easy loosening and possible fracture after femoral stem implantation

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