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Rapid infusion device

  • US 5,061,241 A
  • Filed: 02/08/1991
  • Issued: 10/29/1991
  • Est. Priority Date: 01/19/1989
  • Status: Expired due to Fees
First Claim
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1. A rapid infusion system for rapidly delivering filtered, bubble free, warmed volume to a patient, said rapid infusion device comprising in combination:

  • (a) a pre-assembled unitary disposable unit; and

    (b) a permanent durable unit;

    wherein said disposable unit includes all sub-components that will come into contact with the volume infused to the patient including a disposable flexible length of tubing serving as a pumping chamber;

    wherein said permanent durable unit includes reusable components including driving means and related control means therefor, pump means operably connected to said drive means, heating means for heating the volume, and housing means, said flexible tubing having opposite ends thereof connected to said pre-assembled unitary disposable unit whereby said disposable unit and said length of tubing can be disposed of after use;

    wherein said housing means supports said pump means, said unitary disposable unit, flexible tubing, said heating means, said drive means, and said related control means whereby a filtered, bubble free warmed volume of predetermined temperature may be infused to a patient at a predetermined flow rate;

    wherein said preassembled unitary disposable unit comprises a reservoir, said reservoir having an upper end and a plurality of supply inlets, a return port, an outlet and an air purge vent adjacent said upper end, said vent being operative to remove air from the system prior to infusing the pumped volume to a patient, said reservoir further including baffle means which is positioned below said plurality of supply inlets and said return port and filter means mounted within said reservoir whereby the volume to be infused can be filtered, de-aerated and warmed prior to the infusion; and

    wherein said filter means comprises a two stage filter with the first stage serving to remove particles in excess of 150 microns from said volume and said second stage is a multi-layered wafer assembly of filtering material which removes any impurities of 27-40 microns in size.

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