A Lorentz Force Powered Controllable Micro-Jet Injection System

作者：Chen Kai^*; Miao Laiwu

来源：Joint Conferences of International Conference on Computer Science and Engineering Technology (CSET) / International Conference on Medical Science and Biological Engineering (MSBE), 2015-05-30 To 2015-05-31.

DOI：10.1142/9789814651011_0026

• Jet injection
• micro-jet
• transdermal drug delivery

A medical device of micro-jet injection for drug delivery is described in this paper. The device is powered by a Lorentz force driver (or voice coil motor, VCM) and is able to perform pulsed injection through controlling the direction of the current passing through the device. The driving force and the resulting injection pressure are also controllable through the control of the current intensity of VCM. A physical model was established by combining the existing jet injection model with the relationship of the driving force obtained from a FEM analysis. The numerical calculation of the physical model reveals the relationship between the injection pressure and the current intensity of VCM under system conditions. In a variable dose situation, the relationship between the current intensity of VCM and the dose value was obtained under the condition that the maximum injection pressure is kept above a threshold value. The calculation results can be used for optimization of the device.

• 出版日期2016
• 单位杭州电子科技大学