Femoral stem for artificial hip joint

Abstract

Provided is a femoral stem for an artificial hip joint. The femoral stem for the artificial hip joint comprises a foundation pillar. The outer edge of the foundation pillar is provided with multiple transverse protruding ribs and multiple longitudinal protruding ribs in a protruding mode. Multiple containing rooms are formed by surrounding of inter-frames of the protruding ribs. Three-dimensional meshes are arranged inside the containing rooms. The three-dimensional meshes are provided with multiple micropores which face towards the center of the foundation pillar and are stacked in a multiple-layer mode in the radial direction, wherein the micropores are communicated. After the foundation pillar is implanted into a femoral body of the human body, newborn bone cells can freely enter the micropores in multiple layers and grow, the foundation pillar and the femoral body are fully infused and are connected into a whole, and the foundation pillar is fastened into the femoral body of a patient.

Description

technical field [0001] The present invention relates to a femoral stem of an artificial hip joint, in particular to a base column, which is provided with several longitudinal and transverse protruding ribs, and several accommodating spaces are formed between the protruding ribs. A three-dimensional mesh body is provided in at least one accommodation space, and the three-dimensional mesh body has several micropores radially stacked in layers towards the center of the base column, so that after being implanted into the femoral body, new bone cells can enter Each micropore in the three-dimensional grid layer proliferates and fuses into one body, so that the present invention is fastened in the femoral body. Background technique [0002] Because the hip joint of the human body may be due to many reasons such as congenital hip joint dysplasia, degeneration, disease or external force, resulting in deformation of the femoral head and wear of the acetabular joint, the patient's legs...

AI Technical Summary

Problems solved by technology

[0005] Although the above-mentioned U.S. patent precedent, the femoral stem 12 is superior to the femoral stem with only a smooth surface due to the bonding effect between the rough surface and the femoral body, new bone cells can only adhere to the surface of the rough surface 90, It cannot grow intertwinedly deep into the femoral stem 12. Therefore, the femoral stem 12 and the femoral body disclosed in the US patent record cannot be fused and entangled into one body. It can only be said to "depend" on each other. , so it is impossible to really achieve the purpose of fusion and entanglement, and it is obviously necessary to improve

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