Support member for use with semipermeable membrane
AssigneeBaxter Travenol Laboratories, Inc.
InventorsJimmy L. Miller, William J. Schnell
Life of this patent
Estimating the term…
Abstract
A support member for use in a coil dialyzer to support an elongated, tubularly-shaped, semipermeable membrane is disclosed herein. The member is embossed and has generally angularly-extending parallel ribs on both sides of the web. The ribs are arranged so that on each side there are high ribs and low ribs positioned between said high ribs.
Claims11
A flexible support member for use in a coil dialyzer to support a tubularly shaped, semipermeable membrane, said support member comprising:
- an imperforate fluid impermeable web;
- means on both sides of said web defining a plurality of generally parallel, membrane engaging ribs for supporting said membrane and for maintaining said membrane in spaced relation to said web, said ribs on at least one side of said web including a plurality of first ribs spaced from each other and a plurality of second lower ribs, with at least one lower rib being positioned between each pair of adjacent first ribs, said first ribs and said lower ribs being arranged on at least one side of said web with at least said first ribs being configured to prevent ribs on the other side of said web from extending into spaces defined between said first ribs when said one side is positioned opposite the other side in supporting said membrane.
A coil dialyzer having an elongated flexible support member to support an elongated tubularly shaped, semipermeable membrane, said support member comprising, an imperforate fluid impermeable web;
- said web defining on both sides thereof a plurality of generally parallel membrane engaging ribs for supporting said membrane and for maintaining said membrane in spaced relation to said web;
- said ribs including first ribs and second lower ribs on both sides of said web with at least one second lower rib positioned between each pair of adjacent first ribs, said ribs being arranged in a generally angular relation to the length of said member and extend substantially from one longitudinal edge of said member to the other longitudinal edge;
- and said ribs on opposite sides being in generally overlapping relation so as to form a diamond-shaped pattern.
An elongated flexible support member for use in a coil dialyzer to support an elongated, tubularly-shaped, semipermeable membrane, said support member comprising:
- an elongated imperforate fluid impermeable web;
- means on at least one side of said web defining a plurality of elongated, generally parallel, membrane engaging ribs for supporting said membrane and for maintaining said membrane in spaced relation to said web, said ribs extending substantially across the width of said member and including a plurality of first high ribs spaced from each other and a plurality of second lower ribs, with at least one lower rib being positioned between each pair of adjacent high ribs.
Dependencies are inferred from the claim text.