Faithin Omaha eBook Collection

Download or read book Characterization of Plastic Hypodermic Needles written by Eric Busillo and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents the design and testing of one type of plastic hypodermic needle. The buckling and penetration characteristics of the needles were modeled and analyzed analytically and by finite element analyses. Experimental penetration tests using steel and plastic hypodermic needles and skin mimics, specifically polyurethane film and pig skin, were performed to determine penetration and friction forces. Penetration tests also were conducted to determine whether the needles could penetrate butyl rubber stoppers that cover drug vials. Various lubricants, including silicone oil and a medical grade silicone dispersion, were also used. In addition, the needles underwent perpendicular bending tests and cannula stiffness tests. Finally, fluid flow tests were conducted to determine fluid flow rates through the needles. Experimental results were compared to each other and finite element analyses and discussed.