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MAGNETICALLY DRIVEN MICROPUMP

  • US 20110274566A1
  • Filed: 09/30/2009
  • Published: 11/10/2011
  • Est. Priority Date: 02/12/2009
  • Status: Active Grant
First Claim
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1. A micropump for delivering a fluid, the micropump comprising:

  • a pump assembly includinga first pump body defining a first fluid body flow path, the first pump body includinga first chamber, the first chamber including a first chamber wall and a first side wall,a first inlet and a first outlet, wherein the first inlet and first outlet are in fluid communication with the first chamber,a second pump body defining a second fluid body flow path, the second pump body includinga second chamber, the second chamber including a second chamber wall and a second side wall,a second inlet and a second outlet, wherein the second inlet and the second outlet are in fluid communication with the second chamber, anda flexible membrane disposed between the first chamber and the second chamber; and

    an actuator assembly configured to cooperate with the pump assembly, the actuator assembly includinga driver magnetically coupled to the membrane, anda sensor configured to detect the position of the membrane,wherein the driver applies a magnetic force to the membrane, causing the membrane to deflect, and wherein such deflection of the membrane results in a change of pressure within the first chamber and the second chamber thereby resulting in fluid flow; and

    at least one valve in fluid communication with each of the first chamber and the second chamber, wherein the at least one valve is configured to direct the fluid flow in a predetermined direction.

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