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Human body-absorbable and enhancement-type bone fixation structure material 3D printed with FDM (fused deposition modeling) technology and preparation method thereof

A 3D printing and fixed structure technology, applied in the fields of additive processing, surgery, medical science, etc., can solve the problems of poor compactness and insufficient strength value, and achieve the effects of simple preparation method, low cost and high economic benefit

Inactive Publication Date: 2015-07-29
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is precisely because of the above characteristics of FDM technology that the prepared product has poor compactness and is usually used as a tissue engineering scaffold that requires high porosity.
Although these scaffolds have a certain strength and can maintain the reproduction and growth of cells, their strength value is far from enough to be used as structural materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for preparing a human absorbable reinforced bone fixation structure material printed by FDM technology 3D, comprising the following steps:

[0033] (1) The degradable biomaterial polycaprolactone is made into a slender line with a diameter of 1.75 mm and a length of 3 meters by melt molding;

[0034] (2) Use relevant software to design the required bone plate product model in the computer;

[0035] (3) Input the designed bone plate product model program on the FDM technology 3D printer, and print the product with thin lines of polycaprolactone material;

[0036] (4) Dissolving polyethylene glycol with a molecular weight of 20000 in hot water at 75°C, the solution concentration is 3 (W / W)%;

[0037] (5) The bone plate product model printed in step (3) was vacuum-packed to remove the internal air under vacuum conditions. The vacuum degree was 1000 Pascals, and then soaked in polyethylene glycol solution to remove the package. Ultrasonic technology to infiltrate...

Embodiment 2

[0040] A method for preparing a human absorbable reinforced bone fixation structure material printed by FDM technology 3D, comprising the following steps:

[0041] (1) The degradable biomaterial polycaprolactone is made into a slender line with a diameter of 1.65 mm and a length of 50 meters by melt molding;

[0042] (2) Use relevant software to design the required bone plate product model in the computer;

[0043] (3) Input the designed bone plate product model program on the FDM technology 3D printer, and print the product with thin lines of polycaprolactone material;

[0044] (4) Dissolving polyethylene glycol with a molecular weight of 2000 in hot water at 70°C, the solution concentration is 30 (W / W)%;

[0045] (5) The bone plate product model printed in step (3) was vacuum-packed to remove the internal air under vacuum conditions. The vacuum degree was 900 Pascals, and then soaked in polyethylene glycol solution to remove the package. Ultrasonic technology to infiltrate...

Embodiment 3

[0048] A method for preparing a human absorbable reinforced bone fixation structure material printed by FDM technology 3D, comprising the following steps:

[0049] (1) The degradable biomaterial polybutylene carbonate is made into a slender line with a diameter of 1.85 mm and a length of 10 meters by melt molding;

[0050] (2) Use relevant software to design the required bone plate product model in the computer;

[0051] (3) Input the designed bone plate product model program on the FDM technology 3D printer, and print the product with thin lines of polybutylene carbonate material;

[0052] (4) dissolving polycaprolactone with a molecular weight of 80000 in tetrahydrofuran, the solution concentration is 10 (W / W)%;

[0053] (5) The bone plate product model printed in step (3) was vacuum-packed to remove the internal air under vacuum conditions. The vacuum degree was 950 Pascals, and then soaked in polycaprolactone solution to remove the package. Ultrasonic technology to infil...

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Abstract

The invention relates to a human body-absorbable and enhancement-type bone fixation structure material 3D printed with fused deposition modeling FDM technology and a preparation method thereof. The enhancement-type bone fixation structure material is prepared by performing 3D printing formation on degradable biological materials by adopting the FDM technology and then reinforcing and toughening the degradable biological materials subjected to 3D printing formation. The preparation method comprises the following steps: (1) a degradable biological material A is 3D printed into bone fixation structure products by adopting the FDM technology; (2) a degradable biological material B is dissolved in a specific solvent to prepare a B solution; (3) vacuum encapsulation is carried out on the bone fixation structure products after the inner air of the bone fixation structure products is removed in vacuum atmosphere, the encapsulated products are put in the B solution, and the encapsulation is removed; (4) then, the encapsulation-removed products are subjected to ultrasonic treatment; (5) the treated products are dried to remove the solvent to obtain the human body-absorbable and enhancement-type bone fixation structure material 3D printed with the FDM technology. The enhancement-type bone fixation structure product material provided by the invention is comparatively good in toughness, suitable for being used as an internal bone fixation structure material, easy in preparation method, low in cost and environment-friendly.

Description

technical field [0001] The invention relates to a human body absorbable reinforced bone fixation structural material printed by FDM technology 3D and a preparation method thereof. Background technique [0002] The preparation of absorbable biomedical materials by 3D fused lamination modeling (FDM) has received more and more attention. FDM technology uses a hot melt nozzle to extrude, deposit, and solidify the molten material according to a computer-controlled path. After layer-by-layer deposition, solidification, and finally removal of the support material, the required three-dimensional product is obtained. The raw materials used in FDM technology are usually thermoplastic polymers, and the materials used in human body prosthetic devices are usually degradable biomaterials with good compatibility with the human body. Such as Hung-Jen Yen et al [Hung-Jen Yen Et.al.Evaluation of chondrocyte growth in the highly porous scaffolds made by fused deposition manufacturing (FDM) fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L31/06A61L31/14B29C67/00B33Y10/00
Inventor 吉亚丽杨庆郯志清
Owner DONGHUA UNIV
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