China3D printingNet December 15th, a group of researchers once again proved our point of view, namely3D printingIt is affecting almost every industry today, and it is true.
Here, the researchers raised the concern that the elderly are easily injured by falls, which is all too common.With the help of3D printingThe new concept of fall protection pads, the elderly may not be able to prevent falls due to age, health, dizziness caused by medications, poor eyesight and other reasons, but we may be able to protect them better.
Park and Lee from Pusan National University in South Korea proposed a design of a curved protective pad that can be printed directly from the patient’s scan, so that personalized treatment can be carried out-3D printingOne of the biggest advantages in today’s medical field. The South Korean report shows that more and more South Korean elderly people fall seriously and must be hospitalized. This is clearly the assistance needed in this area. In fact, many older people stay in the hospital for a week or two-and usually because of a hip fracture.
Preventing older people from falling is becoming more and more important. Wearing hip protectors can prevent falls or reduce injuries caused by falls. “The researcher explained. “However, the existing hip protectors are not suitable for everyday clothes; they are not widely used due to aesthetic limitations. In addition, they are uncomfortable. Therefore, it is necessary to develop an optimized impact protector, while taking full account of physical characteristics and movement.There is
It is necessary to improve the wearing satisfaction by designing the impact protector to fit the shape and movement of the human body while maintaining its protective performance. “
Park and Lee pointed out that so far, any type of clothing has been used for3D printingMainly dedicated to fashion, from high fashion to high heels, the effect is very good.
The 3D modeling process involves creating a baseline for the human body scan data, drawing a contour, and then using the cushion contour along the patient’s body-drawing a curve to mimic the human body. After that, they created a hexagonal grid structure and filled it by transforming the grid structure according to the curves of the body.
3D printingThe pad is using Cubicon Single 3D printingMachine passes FDM 3D printingManufactured, which was chosen due to its ability to use more flexible materials. Therefore, flexible TPU is used to make filling materials.
Picture of impact test equipment.
Due to the size, the researchers were forced to divide the printing of the pad:
The researchers explained: “Using the radial division method, it is divided into three parts from the center of the pad and divided at an angle of 120°; using the elliptical division method, it is divided into four parts according to the edge and the curved surface.
After removing the supports, stitch the parts together. Overall, the parts proved to be “structurally flexible”, and the modeling proved to be excellent for creating the necessary protection.
Through many iterations of experiments, we have developed a reasonable and exquisite modeling method, and the results obtained are suitable for research in clothing and other fields.current3D printingThe technology has been deployed to produce very hard products; however, in this study, the printing conditions were precisely set in consideration of the complex characteristics of flexible filament materials.Finally, we believe that our findings foreshadow the use of3D printingThe possibility of technology printing complex and delicate shapes. “
Human body baseline setting procedure (a) and human body scan data processing (b).
Steps to create the pad outline and bottom surface: (a) Rotate and place the pad outline section by section; (b) Change the outline of the pad to fit the surface; (c) Rebuild the curve; (d) Build the network surface.
This researchPublished in “Use3D printing“Technology development of anti-impact protective pad with 3D mesh surface structure” in the article.
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