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Metal implant and surface treatment method thereof

A technology of surface treatment and implants, applied in medical science, prosthesis, etc., can solve problems such as damage, reduce the probability of damage, and promote the effect of calcium phosphate deposition

Inactive Publication Date: 2011-08-10
METAL INDS RES & DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the surface treatment method of the metal implant produces a nanofibrous layer on the surface of the metal implant, which is easily destroyed during the implantation procedure.

Method used

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  • Metal implant and surface treatment method thereof
  • Metal implant and surface treatment method thereof
  • Metal implant and surface treatment method thereof

Examples

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Embodiment 1

[0054] The metal implant in Example 1 is an example of a titanium metal. After the surface of the titanium metal is subjected to sandblasting (the first surface treatment) with 100 microns of alumina sand, the surface of the titanium metal will produce holes with a diameter of about 10 microns. After that, place the titanium metal in 5M sodium hydroxide aqueous solution for 4 hours, then place it in 50mM hydrochloric acid aqueous solution HCl(aq) for 3 hours, and finally heat-treat it at 600°C for 1 hour (second surface treatment), After the first surface treatment is combined with the second surface treatment, the surface structure result of the titanium metal is shown in FIG. 3 .

[0055] Please refer to Figure 3, Figure 3A and Figure 3B Be respectively the surface SEM figure of the metal implant of embodiment 1 when magnification is 500 times and 2500 times, by Figure 3A and Figure 3B It can be seen that the surface of the metal implant contains a plurality of micron...

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Abstract

The invention discloses a metal implant and a surface treatment method thereof. A plurality of micron-sized pits are arranged on the surface of the metal implant, the micron-sized pits comprise a nano-sized fiber network, the aperture of the micron-sized pits is 1 micron to 100 microns, the nano-sized fiber network contains a plurality of nano-sized holes, and the aperture of the nano-sized holes is 10 nanometers to 1000 nanometers. The method comprises the following steps: providing the metal implant; performing primary surface treatment on the surface of the metal implant so as to form the plurality of micron-sized pits on the surface of the metal implant; and performing secondary surface treatment on the surface of the metal implant so as to form the nano-sized fiber network in the micron-sized pits, wherein the nano-sized fiber network contains the plurality of nano-sized holes, and the aperture of the nano-sized holes is 10 nanometers to 1000 nanometers. The external micro-sized pits can protect the structure of the nano-sized fiber network and reduce the risk of damaging the structure of the nano-sized fiber network during an implantation operation.

Description

technical field [0001] The invention relates to a metal implant and its surface treatment method, and in particular to a metal implant with a micron-scale cavity on the surface and a nano-scale fiber network and its surface treatment method. Background technique [0002] At present, there are many methods for forming a porous structure on the surface of metal implants, such as sand blasting or acid etching, through which the surface of metal implants can be roughened. The degree of increase is beneficial to the cell attachment after the metal implant is implanted in the organism and shortens the wound healing time. [0003] For example, U.S. Patent No. US5609633 discloses a method for surface treatment of metal implants. This method utilizes alkaline etching combined with heat treatment (Alkali-heat treatment, AH) conditions to produce nanofibers on the surface of metal implants. layer, this nanofibrous layer can promote calcium phosphate deposition, has osteocyte induction...

Claims

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Application Information

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IPC IPC(8): A61L27/06A61L27/02A61L27/56
Inventor 施威任王韦晴周金龙小久保正松下富春帕特纳亚・迪帕・库玛
Owner METAL INDS RES & DEV CENT
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