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Airless intravenous fluid system

  • US 4,187,847 A
  • Filed: 07/11/1977
  • Issued: 02/12/1980
  • Est. Priority Date: 07/11/1977
  • Status: Expired due to Term
First Claim
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1. An intravenous fluid therapy system comprising:

  • a non-vented source of intravenous fluid which is an intravenous-fluid-filled container having deformable side walls, an upper part, and a lower part with a mouth;

    pressure means adapted to said source to pressurize said intravenous fluid, said pressure means including;

    said side walls, said surface members having edges with a plurality of attachment means affixed thereto along said edges and being sized in surface area dimensions proximate the size of the side walls of said container, andtensioning means adapted to said surface members to cause said surface members to exert a force against said side walls, said tensioning means being an elastic member which is an elongated rubber strip removably positioned about and secured to selected attachment means in a pattern to tension said surface members together, and whereinsaid spaced apart surface members are comprised of an upper pair of spaced apart surface members hingedly secured to each other along first edges thereof with means secured to said pair at said first edges to suspend said pair, and a lower pair of spaced apart surface members hingedly secured to each other along first edges thereof with an aperture formed along said edges wherein said upper pair of surface members are positioned about the upper part of said source and said lower pair of surface members are positioned about the lower part of said source with its mouth in said aperture and wherein said tensioning means is adapted to extend between the second edges of said upper pair opposite said first edges thereof and the second edges of said lower pair opposite said first edges thereof;

    an airless flow meter to indicate the flow of intravenous fluid comprised of;

    inlet connection means for connection with said tube means to receive said fluid from said source;

    a chamber connected to receive said fluid from said inlet connection means, said chamber having flow indication means positioned therein, which is a plurality of fins symmetrically secured to a hub rotatably mounted within said chamber;

    outlet connection means connected to said chamber for connection to said tube means to receive fluid from said chamber and to supply fluid to said tube means;

    wherein said fluid flows from said inlet to said outlet connection means to impinge on said fins to cause said fins to rotate proportionally to the flow rate of said fluid, said fins having magnetic means adapted thereto;

    catheter means for insertion into the vein of a patent; and

    tube means to connect said source to said flow meter and said flow meter to said catheter means.

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