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Surface activating method of medical metal material

A metal material and surface activation technology, applied in the field of preparation of biomedical metal materials, can solve the problems of poor bonding ability between coating and substrate, cumbersome operation, time-consuming, etc., to avoid poor bonding strength, simple operation and short processing time. Effect

Inactive Publication Date: 2005-10-12
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bonding ability of the coating prepared by this method to the substrate is too poor
The common disadvantages of the above methods are that the operation is cumbersome and time-consuming.

Method used

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  • Surface activating method of medical metal material
  • Surface activating method of medical metal material
  • Surface activating method of medical metal material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] First take NaCl 680mmol, CaCl 2 12.5mmol, Na 2 HPO 4 .2H 2 O 5mmol, MgCl 2 .6H 2 O7.5mmol, NaHCO 3 12.6mmol, add 40 milliliters of 1mol / l HCl measured together into deionized water, stir, mix and dissolve, and continue to use deionized water to make up to 1 liter as electrolyte solution, then adjust the pH of the solution with tris The value is 6, which is reserved in the electrolytic cell.

[0024] First connect titanium to a copper wire by spot welding, and seal the weld with epoxy resin, then place it together with a platinum electrode as an anode and a saturated mercurous sulfate / mercury electrode as a reference electrode, and place it in the electrolyte solution in the electrolytic cell and connected to the potentiostat; select the constant potential mode from the potentiostat, set the potential to -2V, treat for 10 minutes, take out the cathode sample, wash it with deionized water, and then put it in an oven for drying at 40°C , it can be observed that th...

Embodiment 2

[0026] First, take KCl 600mmol, CaCl 2 12.5mmol, Na 2 HPO 4 .2H 2 O 5mmol, MgCl 2 .6H 2 O7.5mmol, K 2 CO 3 12.6mmol, add 10 milliliters of 1mol / l HCl measured together into deionized water, stir, mix and dissolve, and continue to use deionized water to make up to 1 liter as electrolyte solution, then adjust the pH of the solution with tris The value is 4, which is reserved in the electrolytic cell.

[0027] First connect the stainless steel with a copper wire by spot welding, and seal the weld with epoxy resin, then put it together with the platinum electrode as the anode and the saturated mercurous sulfate / mercury electrode as the reference electrode, and place it in the electrolyte solution in the electrolytic cell and connected to the potentiostat; select the constant potential mode from the potentiostat, set the potential to -1.6V, treat for 5 minutes, take out the cathode sample, wash it with deionized water, and then put it in an oven to dry at 40°C After dryin...

Embodiment 3

[0029] First take NaCl 350mmol, CaCl 2 15mmol, Na 2 HPO 4 .2Hx 2 O 2.5mmol, MgCl 2 .6H 2 O5mmol, Na 2 CO 3 6mmol, add 20 milliliters of 1mol / l HCl measured together into deionized water and stir to mix and dissolve, and continue to use deionized water to make up to 1 liter as electrolyte solution, then adjust the pH value of the solution with tris It is 5, and it is reserved in the electrolytic cell.

[0030] First connect the titanium alloy to a copper wire by spot welding, and seal the welding place with epoxy resin, then place it together with the platinum electrode as the anode and the saturated mercurous sulfate / mercury electrode as the reference electrode, and place it in the electrolyte in the electrolytic cell solution, and connected to the potentiostat; select the constant potential mode from the potentiostat, set the potential to -2V, treat for 7 minutes, take out the cathode sample, wash it with deionized water, and then put it in an oven to dry at 40°C Af...

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Abstract

A surface-active method of metal material for medical use. It adopts three poles system. Negative pole is metal material. Positive pole is inert material. Fit them and reference electrode to electrolyte solution containing supported electrolyte solution. Soluble calcium salt and phosphate at pH2.5-6.5.Hold negative potential to be at -1 to -4V by way of constant potential or apply to electronic current 1-5Ma at constant value for 2 to 20min. Get sample of negative pole, wash and dry it.

Description

1. Technical field [0001] The invention belongs to the technical field of preparation of biomedical metal materials, and in particular relates to a method for surface activation of medical metal materials. 2. Background technology [0002] Bone defects due to various reasons are very common in clinical practice, and large-area bone repair and weight-bearing bone repair are one of the clinical problems that need to be solved urgently. Medical metal materials are the main load-bearing bone repair materials. However, the binding ability between medical metals and tissues, that is, bioactivity, has always been a performance index that needs to be improved in the use of metal materials. [0003] Biological activity is generally considered to mean that the implant material can form a chemical bond with bone tissue, maintain or promote cell differentiation, proliferation, and promote the growth of bone tissue. The biological activity of bone replacement materials lies in the effec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/32C25D9/08
Inventor 张其翼
Owner SICHUAN UNIV
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