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A method for preparing a stent with interconnected apertures

A technology on pore size and support, which is applied in the field of porous support preparation, can solve the problems of limited application fields, too large pore wall thickness, and difficulty in reaching 50% porosity, and achieves wide application, good pore size uniformity, and material distribution. uniform effect

Active Publication Date: 2015-11-25
CHONGQING RUNZE PHARM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the relative pore diameter of the existing porous scaffold with connected pores is too large and the thickness of the pore wall is too thin, so that the distribution of the porous metal material obtained by sintering is not easy to be uniform, and its porosity is difficult to reach more than 50%, which limits its application field.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for preparing a stent with interconnected pores, spraying nylon 66 (10-35 microns) on 10×10×30mm porous polyurethane foam (average pore diameter 0.48mm, density 0.025g / cm2) at 0°C at a speed of 100m / s 3 , hardness 50°), and then processed at 20°C.

Embodiment 2

[0021] A method for preparing a stent with interconnected apertures, spraying N-isopropylacrylamide on a 10×10×30mm porous polyurethane foam (average pore diameter 0.48mm, density 0.025g / cm2) at a high temperature at a speed of 124m / s 3 , hardness 50°), and then conduct cooling and expansion treatment.

Embodiment 3

[0023] A method for preparing a stent with interconnected apertures, spraying N-isopropylacrylamide, etc. at a speed of 150m / s on 10×10×30mm porous polyurethane foam (average pore diameter 0.48mm, density 0.025g / cm2) at 35°C 3 , hardness 50°), and then spray pure water at the same speed at 20°C.

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PUM

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Abstract

A making method of an aperture connected support comprises the following steps: spraying expansion material powder particles to the aperture connected support, and expanding. The controllable adjustment of the size of the apertures of the support is realized through the making method, and the aperture connected support made in the invention has good uniformity. Porous metal materials prepared by adopting the above porous support made in the invention have the advantages of uniform distribution, arbitrary adjustment of the porosity, and wide uses.

Description

technical field [0001] The invention relates to a preparation method of a support, in particular to a preparation method of a porous support with interconnected pores used in the preparation of porous metal materials. Background technique [0002] Porous metal materials are widely used. For example, they can be used as medical implant materials for important and special purposes such as treating bone tissue trauma and femoral tissue necrosis. Common materials of this type include porous metal stainless steel and porous metal titanium. As a porous implant material used in the treatment of bone tissue trauma and femoral tissue necrosis, its porosity should reach 30-80% according to the requirements of different implant sites, and the pores should be all connected and evenly distributed, or partially connected and connected as required. The uniform distribution makes it consistent with the growth of bone tissue in the human body, and reduces the weight of the material itself, s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L27/56A61L27/04A61L27/14A61L27/50A61L27/16A61L27/18A61L27/02A61L27/20
Inventor 叶雷
Owner CHONGQING RUNZE PHARM CO LTD
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