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Medical tantalum metal bone trabecula material prepared through chemical vapor deposition method and preparation method of medical tantalum metal bone trabecula material

A technology of chemical vapor deposition and metal bone, which is applied in chemical instruments and methods, metal material coating technology, pharmaceutical formulations, etc., can solve problems that are not suitable for large-scale industrial production, difficult to achieve mass production, and high power of laser sintering technology , to achieve the effect of low elastic modulus, high porosity and good application prospects

Active Publication Date: 2020-09-15
BEIJING CHUNLIZHENGDA MEDICAL INSTR
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, due to the extremely high melting point of tantalum metal, which can reach 3000 degrees, the equipment used in laser sintering technology has high power and high energy consumption, which is not suitable for large-scale industrial production; foam impregnation technology, as an emerging technology, is still being prepared in the laboratory stage, it is difficult to achieve mass production; and chemical vapor deposition technology is the most feasible for industrial production because of its low process difficulty, simple operation, high yield, and chemical vapor deposition technology is the most stable and most suitable for industrial production. Preparation technology of tantalum metal trabecular bone material

Method used

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  • Medical tantalum metal bone trabecula material prepared through chemical vapor deposition method and preparation method of medical tantalum metal bone trabecula material
  • Medical tantalum metal bone trabecula material prepared through chemical vapor deposition method and preparation method of medical tantalum metal bone trabecula material
  • Medical tantalum metal bone trabecula material prepared through chemical vapor deposition method and preparation method of medical tantalum metal bone trabecula material

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preparation example Construction

[0030] The invention provides a method for preparing medical tantalum metal trabecular bone material by chemical vapor deposition, which specifically includes the following steps:

[0031] (1) Put medical pure tantalum in the first reaction chamber, put porous carbon substrate in the second reaction chamber, seal the first reaction chamber and the second reaction chamber respectively, and the average pore diameter of the porous carbon substrate is 600-800 μm , the average wire diameter is 100-250 μm, and the average porosity is 81-90%. The first reaction chamber and the second reaction chamber can be any one of quartz reaction chamber or high-purity graphite reaction chamber;

[0032] (2) Vacuumize the first reaction chamber and the second reaction chamber to a certain degree, and then feed argon gas into the first reaction chamber and the second reaction chamber respectively, and the flow rate of the argon gas is 10000-13000ml / min , and ensure that the vacuum degree in the fi...

Embodiment 1

[0041] This embodiment provides a method for preparing medical tantalum metal trabecular bone material by chemical vapor deposition, wherein the first reaction chamber is a quartz reaction chamber, and the second reaction chamber is a high-purity graphite reaction chamber, which specifically includes the following steps:

[0042] (1) Put medical pure tantalum in the first reaction chamber, put porous carbon substrate in the second reaction chamber, the average pore diameter of the porous carbon substrate is 600 μm, the average wire diameter is 100 μm, and the average porosity is 90%. The first reaction chamber and the second reaction chamber are respectively sealed;

[0043] (2) The first reaction chamber and the second reaction chamber are respectively evacuated to a certain degree, and then argon is respectively introduced into the first reaction chamber and the second reaction chamber, and the flow rate of the argon is 10000ml / min, and Ensure that the vacuum degree in the f...

Embodiment 2-9

[0049] The difference between embodiment 2-9 and embodiment 1 lies in the difference of various parameters in the process of preparing medical tantalum metal trabecular bone material, the specific difference of each parameter of embodiment 2-9 and embodiment 1 is as follows Table 1 shows.

[0050] Table 1 Example 1-9 Comparison of parameters in the preparation process of tantalum metal trabecular bone materials for traditional Chinese medicine

[0051]

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Abstract

The invention relates to the technical field of medical instruments, in particular to a medical tantalum metal bone trabecula material prepared through a chemical vapor deposition method and a preparation method of the medical tantalum metal bone trabecula material. The preparation method specifically comprises the following process that tantalum pentachloride gas and high-purity hydrogen react for 6-9 h under the vacuum environment of 900 DEG C-1,050 DEG C, a tantalum metal layer obtained through replacement is deposited on the surface of a matrix, and the matrix and the tantalum metal layerdeposited on the surface of the matrix are the tantalum metal bone trabecula material; and the speed that the tantalum pentachloride gas is introduced into the vacuum environment ranges from 10,000 ml / min to 13,000 ml / min, the speed that the high-purity hydrogen is introduced into the vacuum environment ranges from 530 ml / min to 570 ml / min, and the vacuum degree of the vacuum environment is largerthan or equal to 4 Pa and is smaller than or equal to 13.3 Pa. Under cooperation of various reaction conditions, the preparation efficiency of the medical tantalum metal bone trabecula material is improved, and the tantalum metal bone trabecula material prepared through the preparation method is high in porosity, good in biocompatibility and good in friction coefficient, is highly similar to cancellous bones of human bodies and is a more ideal bone implant material.

Description

technical field [0001] The invention relates to the technical field of medical instruments, more specifically, it relates to a medical tantalum metal trabecular bone material prepared by a chemical vapor deposition method and a preparation method thereof. Background technique [0002] Bone implant materials (bone grafts) are mainly used to repair and fill bone defects or fix and support fracture ends, including autologous bone, allogeneic bone, metal materials, polymer materials, inorganic non-metallic materials, etc. As a human implant, it should have good biocompatibility, biocompatibility and human safety in biology; it must have a certain strength in terms of mechanics, and its elastic modulus is close to that of bone, and it should be wear-resistant and aging-resistant; It requires stable performance, corrosion resistance and easy disinfection and sterilization. In clinical treatment, different implant materials are often selected according to the needs of different co...

Claims

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Application Information

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IPC IPC(8): C23C16/14C23C16/44A61L27/08A61L27/30A61L27/50A61L27/56B01D53/68B01D53/78
CPCA61L27/08A61L27/306A61L27/50A61L27/56A61L2400/18A61L2420/02A61L2430/02B01D53/68B01D53/78B01D2251/304B01D2251/604B01D2258/025C23C16/14C23C16/44
Inventor 解凤宝史春宝欧阳兆逸
Owner BEIJING CHUNLIZHENGDA MEDICAL INSTR
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