3-D printed composite microfluidic pump for wearable biomedical applications
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- 作者：D.J. Thomas ; d.j.thomas@swansea.ac.uk" class="auth_mail" title="E-mail the corresponding author ; Z. Tehrani ; B. Redfearn
- 关键词：3D printing ; Micropump ; Bioplastic ; Poly lactic acid polymers
- 刊名：Additive Manufacturing
- 出版年：2016
- 出版时间：January 2016
- 年：2016
- 卷：9
- 期：Complete
- 页码：30-38
- 全文大小：5202 K
文摘
An integrated wearable 3-D printable microfluidic pump was developed, which uses a novel actuation process. Fused deposition manufacture 3-D printing was used as a means to accurately produce this device. This resulted in the fabrication of high precision integrated parts made from poly-lactic-acid bioplastic. By integrating an electro-magnetically actuated closed diffuser nozzle pump configuration a micro-fabricated microfluidic pump has been produced. Biofluids have been driven through the device by actuating a composite polydimethylsiloxane diaphragm actuated polymeric microstructure diaphragm membrane using electromagnetic force. This composite diaphragm was made by suspending 10 μm iron particles in the polydimethylsiloxane at concentrations of 30%, 40% and 50%. It is shown that this device acts as an effective electromagnetic force actuated a pump. It is successfully demonstrated that a square wave electromagnetic signal is effective for generating a 2.2 μL/min flow rate of biofluid. The integration of 3D printed devices to form a micropump is proven through practical testing which demonstrate a controllable flow rate was generated.