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Method and apparatus for metered infusion of fluids

  • US 4,155,362 A
  • Filed: 01/13/1977
  • Issued: 05/22/1979
  • Est. Priority Date: 01/26/1976
  • Status: Expired due to Term
First Claim
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1. A flow system for infusing a fluid from a supply reservoir into the human body, comprising, in combination:

  • a length of flexible-walled tubing extending from the supply reservoir to the body, said tubing exhibiting incomplete restoration upon repeated compressive cycling thereof;

    means continuously including at least one pressure means compressively engaged to the sidewall of said tubing for completely occluding the lumen thereof;

    means for advancing the point of engagement of said pressure means along a segment of said tubing, the lumen of said tubing being repetitively and progressively compressed and restored along said segment to urge fluid through said tubing; and

    flow restriction means for continuously at least partially restricting the lumen of said tubing downline of said tubing segment to increase the pressure of the fluid within said segment downline of said point of engagement to assist in reformation of said tubing for improved metering accuracy.

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