Figure 2
From: Wirelessly Controlled Implantable System for On-demand and Pulsatile Insulin Administration
Design and operation principles of the magnetically driven pump (MDP). (A) 3D schematic images of the constituent units. (B) Optical image of the MDP. The scale bar is 1 cm. (C) Schematic description of the MDP operation. ① The electromagnet is placed above the implanted MDP; ② a positive voltage is applied, and the polarity of the electromagnet attracts the Mp; ③ the plunger moves upward, and ④ the insulin solution in the drug reservoir is aspirated into the barrel; ⑤ a negative voltage is applied, and the polarity of the electromagnet repels the Mp; ⑥ the plunger moves downward, and ⑦ the insulin is infused through the check valve.
