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Drive system for an infusion pump

  • US 20030009133A1
  • Filed: 04/12/2002
  • Published: 01/09/2003
  • Est. Priority Date: 04/13/2001
  • Status: Active Grant
First Claim
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1. A liquid delivery system comprising:

  • a housing which accommodates a syringe containing the liquid;

    a motor carried by the housing;

    a drive system, operatively connected with the motor, which advances a piston of the syringe to expel liquid from a barrel of the syringe, the drive system including;

    a threaded rotatable shaft; and

    a piston drive member, which linearly advances the piston, the drive member defining a threaded portion which engage threads of the shaft, the piston drive member advancing linearly as the shaft rotates.

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