Patent ID: 7648619

Claim:
A hydrogel-driven micropump, comprising: two fluid chambers; a fluid channel, connecting said two fluid chambers; a first substrate plate and a second substrate plate each having accommodation chambers filled in hydrogel which are placed next to said two fluid chambers and connected by inward extending bridges, and with electric terminals leading to said accommodation chambers; and a middle substrate, sandwiched between said first and second substrate plates and having separated fluid chambers close to ends thereof, with a separating block being placed between said fluid chambers; wherein said middle substrate between said first and second substrate plates forms a micropump body, all of said substrates are separated by membranes, said fluid chambers are located between said membranes and said first and second substrate plates, respectively, and insulating material, an electrophoretic fluid channel is left between said membranes and said bridges, said fluid channel is placed within said middle substrate between said membranes, and said first substrate plate has through holes from outside to said two fluid chambers allowing fluid to be injected.