Browsing by Subject "injection force"
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Item Solid Freeform Fabrication of Soft Tissue Simulators for Needle Injection(University of Texas at Austin, 2014) Lipton, Jeffrey Ian; Tow, Adam Perry; Burbank, Istavan; Vazquez, Andre; Lipson, HodMedical training and surgical planning are becoming important applications for Solid Freeform Fabrication (SFF). To date, the vast majority of these training applications have relied on the production of stiff materials to replicate bones. Others have used soft materials to replicate soft tissues without regard for replicating the mechanical properties of the tissues. Varying the Young’s Modulus of a printed object using various propriety materials and processes, we were able to replicate the injection force profile of a sharp hypodermic needle stick using blunted needles safer for training usage. The composite structures and needle pairs have a puncture force of 2.8 Newtons at a depth of 9 - 15mm, within the reported range for human skin. This will provide a safer training alternative in the use of hypodermic needles without the need for training on humans or animals.