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Biological living being in medical use for Embeded to human body, and preparation method

An implant and biological technology, used in prostheses, medical science, coatings, etc., can solve the problems of poor bonding strength between the coating and the titanium alloy substrate, large internal stress in the coating, and peeling off of the coating, and achieve no toxic side effects. , low cost, simple process effect

Inactive Publication Date: 2004-10-27
安吉县阳光医药用品有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the large difference between the thermal expansion coefficient of hydroxyapatite and that of titanium alloy materials (the thermal expansion coefficient of hydroxyapatite is 16.4×10-6 / °C-18.6×10-6 / °C), the hydroxyapatite coating The internal stress is large, and the bonding strength between the coating and the titanium alloy substrate is poor, so that the coating is easy to fall off from the surface of the substrate

Method used

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  • Biological living being in medical use for Embeded to human body, and preparation method
  • Biological living being in medical use for Embeded to human body, and preparation method
  • Biological living being in medical use for Embeded to human body, and preparation method

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Effect test

Embodiment 1

[0028] Embodiment 1 According to chemical composition: (Wt%)

[0029] SiO2 40.9

[0030] CaO 39.2

[0031] P2O5 13.0

[0032] MgO6.4

[0033] F 0.2

[0034] After the prepared powder is stirred evenly, it is melted at a high temperature of 1410°C, then quickly poured into water to quench, and dried to make a spray powder. Using the plasma jet spraying technology, the bioglass powder was deposited on the cleaned and sandblasted medical titanium alloy-based (Ti-6Al-4V) artificial tooth root implant (the implant diameter was 4 mm), and the spraying process parameters were: :

[0035] Plasma spray primary gas (N2) flow rate of 40 Nl / min

[0036] Plasma spray gas (H2) flow rate of 6 Nl / min

[0037] Spray distance 100mm

[0038] Powder carrier gas (N2) flow at 3 Nl / min

[0039] Powder feeding rate 20g

[0040] Spraying current 430A

[0041] Spray voltage 85V

[0042] The glass-coated artificial tooth root implant is composed of a glass phase, w...

Embodiment 2

[0043] Embodiment 2 According to chemical composition: (Wt%)

[0044] SiO2 41.0

[0045] CaO 40.0

[0046] P2O5 13.0

[0047] MgO 6.0

[0048] After the prepared powder is stirred evenly, it is melted at a high temperature of 1410°C, then quickly poured into water to quench, and dried to make a spray powder. Using plasma jet spraying technology, the biological glass powder was deposited on the cleaned and sandblasted medical titanium alloy-based (Ti-6Al-4V) artificial joint implant. The spraying process parameters are:

[0049] Plasma spray primary gas (N2) flow rate of 45 Nl / min

[0050] Plasma spray gas (H2) flow rate of 6 Nl / min

[0051]Spray distance 110mm

[0052] Powder carrier gas (N2) flow at 3 Nl / min

[0053] Powder feeding rate 20g

[0054] Spraying current 450A

[0055] Spray voltage 85V

[0056] The glass-coated artificial joint implant has a coating thickness of 500 μm, is well bonded to the titanium alloy base, has a shear stren...

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Abstract

A medical biologicl body to be transplanted in human body is prepared from a 4-element (Ca-Si-P-Mg) glass paint and a Ti alloy (Ti-6Al-4V) substrate through depositing said glass paint on the surface of Ti alloy substrate. Said glass paint contains micro crystals of calcium phosphate and calcium silicate, and has high bioactivity and biocompatibility.

Description

technical field [0001] The present invention relates to a new medical biological implant and its preparation method. More precisely, the Ca-Si-P-Mg quaternary biological glass is deposited on the surface of a titanium alloy substrate by using the plasma jet spraying technology to prepare a A high-strength medical biological implant. It belongs to the field of medical biomaterials. technical background [0002] Titanium alloy material (Ti-6Al-4V) has good biocompatibility and excellent mechanical properties, and was widely used in plastic surgery and human hard tissue replacement in the early days. However, the alloy lacks biological activity and cannot form chemical bonds with bone tissue after implantation. Hydroxyapatite (HA) has excellent bioactivity and biocompatibility, and can be tightly combined with bone tissue in the human body. However, hydroxyapatite (HA) block material has poor mechanical strength and cannot bear the load of bone. At present, the use of plasm...

Claims

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Application Information

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IPC IPC(8): A61L27/06A61L27/32
Inventor 顾卫明常江
Owner 安吉县阳光医药用品有限责任公司
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