Green Medical Equipment Design and Development-Disposable syringes

• Main Authors: Jian-Hong Chen, 陳建宏
• Other Authors: Shi-Chang Tseng
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/24538349686725641336

碩士 === 國立雲林科技大學 === 機械工程系碩士班 === 101 === Injection syringes consist of two components; the syringe body and the needle. The syringes are usually made of polypropylene (PP) materials which will emit dioxin during combustion, especially if they are burned together with metal such as the needles. To reduce the environmental burden, the syringe should be made of biodegradable materials and should also produce minimal waste after use. These targets can be reached if parts of the used syringe and needle can be reused or recycled. Our novel syringe has two parts. One is a disposable pliable bag (bladder) with a hard nozzle for needle to be connected to perform injection. The other part is a reusable syringe barrel with a plunger. The disposable portion is capped on the reusable syringe barrel for injection and the former can be disposed off independently from the reused barrel after injection. As the disposable portion is enclosed and isolated, it will not contaminate the reusable portion. With this invention, the syringe wasted mass will be less than 5% of the original conventional plastic syringe. As the disposable component is much smaller, much better biodegradable materials can be used for its production while still retaining the margin of profit for the manufacturer. This novel invention is a needle extraction device, to extract the used needle from the syringe so that after use, the syringe waste can be freed from the needle. This invention serves two purposes. One is to abolish the danger of needle stick injury after injection, and the other is to recycle the metal waste so that the metal portion of the device can be separated from the syringe waste. In this project we test the feasibility of the structure and materials to produce such syringes.