Non-collapsible medical fluid container with air vent filter
AssigneeBaxter Travenol Laboratories, Inc.
InventorsJ. Lee Pope, Jr., James W. Scott
Life of this patent
Estimating the term…
Abstract
A non-collapsible medical fluid container is disclosed, with microporous filter means mounted on the interior end of a vent conduit that extends into the container for venting displacement air thereinto. The filter means, preferably a rigid microporous depth-type filter frictionally mounted on the end of the vent conduit, is mounted closely adjacent to an interior surface of the container to prevent dislodgement of the filter by pressure from the venting air.
Claims16
In a non-collapsible medical fluid container comprising a supply of medical fluid therein, opening means at one end of the container for discharge of the fluid by inversion of the container, and a displacement air vent conduit extending from said opening means into the container and terminating at a location spaced from the other end of said container to vent air thereinto to permit liquid discharge, the improvement comprising:
- microporous filter means biologically compatible with said medical fluid, said filter means being frictionally received over the terminal end portion of said vent conduit and spaced from the interior surface of said other end of said container, the length of said terminal end portion received within said filter means being greater than the distance between said filter means and said interior surface at said other end of the container, whereby the filter means cannot completely dislodge from the end of the conduit by pressure from the venting air.
In a non-collapsible medical fluid container of the type adapted to be emptied by inverting the container to discharge the fluid through closure means normally closing the top of the container and including a displacement air vent tube extending from the closure means toward the bottom of the container for venting displacement air into the container during liquid discharge, the improvement comprising a rigid microporous depth filter carried on the lower end of said vent tube and including a cylindrical bore-shaped recess therein for receiving said lower end of said tube, said depth filter having a surface portion closely spaced relative to the interior surface of the bottom wall of the container, the length of said bore-shaped recess being greater than the distance between said surface portion and said interior surface to prevent dislodgement of the filter from the tube during venting.
Dependencies are inferred from the claim text.