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Functional bionic porous titanium alloy femoral head supporting rod and preparation method thereof

A technology of titanium alloy and support rod, which is applied in the direction of femoral head, metal processing equipment, manufacturing tools, etc., can solve the problems of insufficient mechanical strength, poor corrosion resistance of magnesium metal, etc., and achieve the simple and easy preparation method, good promotion of bone effect, The effect of preventing the collapse of the femoral head

Pending Publication Date: 2021-01-05
FOURTH MILITARY MEDICAL UNIVERSITY
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Problems solved by technology

A large number of studies have shown that the degradation products of magnesium metal in vivo have no cytotoxicity, and the magnesium ions generated by degradation have dual activities of promoting new bone formation and inducing angiogenesis. However, the defects of magnesium metal such as poor corrosion resistance and insufficient mechanical strength limit its use as a Application of a single material in the field of bone replacement repair

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  • Functional bionic porous titanium alloy femoral head supporting rod and preparation method thereof
  • Functional bionic porous titanium alloy femoral head supporting rod and preparation method thereof
  • Functional bionic porous titanium alloy femoral head supporting rod and preparation method thereof

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] 1) Material design of porous titanium alloy scaffold for femoral head

[0024] According to the three-dimensional model data and biomechanical parameters of the femoral head and neck to be replaced, Mimics and CAD software were used to design a femoral head bracket with a length of 50-60 mm and a diameter of 6-8 mm. The stent is designed to meet the mechanical strength requirements of the head and neck support. According to the previous in vitro mechanical test results, the elastic modulus can be gradually changed at the head, body and tail: see figure 1 , the elastic modulus of the head is about 1.5Gpa, and the length is 6-8mm; see figure 2 , the elastic modulus of the body is 0.7Gpa-3.0Gpa, and the length is 30-40mm; the elastic modulus of the tail is 15.0GPa, and the length is 10mm. The pore size and porosity of the scaffold material are based on...

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Abstract

The invention belongs to the field of medical bone repair materials and preparation thereof, and relates to a functional bionic porous titanium alloy femoral head supporting rod and a preparation method thereof. The functional bionic porous titanium alloy femoral head supporting rod comprises the following components: titanium alloy and magnesium. The preparation method comprises the following steps of: preparing the femoral head supporting rod which is matched with the mechanical strength and the elastic modulus of a human bone and has a bone trabecula bionic porous structure by taking the titanium alloy as a raw material by adopting an Electron Beam Melting (EBM) technology; and then preparing high-purity functional magnesium coatings on the inner surface and the outer surface of the porous titanium alloy by adopting a multi-arc ion coating technology. The matter being worth emphasizing is that the material can be used for preparing the femoral head supporting rod and bone repair materials at other parts due to good mechanical strength, good angiogenesis effect and good osteogenesis promoting effect. The preparation method of the material is simple, convenient and feasible, is friendly to the human environment, can be produced in batches, and has a good application prospect in the field of medical bone repair materials.

Description

technical field [0001] The invention belongs to the field of medical bone repair materials and preparations thereof, in particular to a functional bionic porous titanium alloy femoral head support rod and a preparation method thereof. Background technique [0002] The basic pathophysiology of femoral head necrosis is microcirculation and bone regeneration disorder. Therefore, a functional bone repair material that not only satisfies mechanical support, but also has the ability to improve circulation and bone regeneration is required for head-saving treatment. It is used for filling the bone defect after core decompression, so as to improve the femoral head Necrotic head protection treatment effect. [0003] Porous titanium alloys have become an advantageous material for the research and development of bone repair replacement products because of their good mechanical strength, low apparent elastic modulus and porous characteristics for bone and blood vessel ingrowth, and are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/36
CPCA61F2/36A61F2310/00023A61F2310/00425A61F2/30942A61F2002/30985A61F2002/30769
Inventor 郭征李小康刘文文
Owner FOURTH MILITARY MEDICAL UNIVERSITY
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