Preliminary Study of Manufacturing Technique Using Three Dimensions Stain Steel Braid for Bone Scaffold

2012 ◽  
Vol 184-185 ◽  
pp. 1424-1427
Author(s):  
Jia Horng Lin ◽  
Ching Wen Lin ◽  
Yueh Sheng Chen ◽  
Chien Lin Huang ◽  
Wen Cheng Chen ◽  
...  

Nowadays, as rising research on biomaterials, the artificial bone scaffold has become the most important part of the study. Moreover, metallic materials have been applied on the artificial bone scaffold; but its high rigidity causes the stress shielding effect in bones. To improve the disadvantages of metallic materials and pursue their better mechanical properties, 304 stainless steel fibers have multi-layer braided into the 3D stainless-steel braid with porous structure and better mechanical properties, using braiding machine. In multi-layer braiding process, with the constant number of take-up gear and varying number of braid gear, the 3D stainless-steel braid was manufactured. Afterwards, its braiding structure and angle were observed by stereo microscope. Also, the optimal braiding parameters can be acquired from tensile strength test.

2012 ◽  
Vol 550-553 ◽  
pp. 1253-1257
Author(s):  
Ching Wen Lou ◽  
Shih Peng Wen ◽  
Jin Jia Hu ◽  
Yueh Sheng Chen ◽  
Yi Shin ◽  
...  

In this study, polyester (PET) fiber and 304 stainless steel (SS) wires are twisted and then braided into multi-layer braids on a braiding machine, forming PET/SS composite braids. The braids form the artificial bone scaffold whose mechanical properties are tested and found to be acceptable and with good biocompatibility. However, scaffold made from polymer does not provide enough strength; thus, PET fibers are combined with SS wires to promote scaffold’s mechanical properties and reduce the stress shielding effect. According to the test results, the braid angle increases with an increase in the number of teeth on the braiding gear; by contrast, tensile strength increases with a decrease in tooth number. In particular, when the gear ratio of the take-up gear to the braid gear is 90:50, the resulting braids yield the optimum tensile strength.


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