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Infusion method and infusion pump

  • US 5,988,983 A
  • Filed: 05/22/1997
  • Issued: 11/23/1999
  • Est. Priority Date: 11/28/1995
  • Status: Expired due to Term
First Claim
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1. An infusion method of pressing an infusion tube from an outer surface thereof to supply a liquid, comprisingstationarily holding said infusion tube between holding means and a plurality of independently driven fingers which are arranged along a longitudinal direction of said infusion tube, said infusion tube having a predetermined outer diameter;

  • andcontrolling the amount of discharge of the liquid to be proportional to the square of the amount of collapse of the infusion tube by individually driving said fingers to press said infusion tube from said outer surface to supply the liquid, each of the fingers being individually driven to move by an amount which eliminates an influence of a wall thickness of said infusion tube.

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