Hollow fiber filter for extracorporeal blood circuit
First Claim
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1. A filter for an extracorporeal blood circuit comprising:
- a bundle of hollow fibers having an end section encased in a potting material, wherein said end section further comprises a stem of fibers and potting material extending from a disk of the potting material, wherein the stem of fibers and potting material has an outside diameter along an entire length of the stem, and the stem outside diameter is substantially narrower than an outside diameter of the disk of potting material; and
an end surface of the stem includes open ends of the fibers distributed throughout the end surface including open ends proximate to a perimeter of the end surface,the stem including a stem side surface substantially perpendicular to the end surface of the stem;
a filter housing through which extends said bundle;
a filter housing cap at a first end of the filter housing, wherein the disk of the potting material is sealed to the filter housing cap;
a filter header cap including an inlet connectable to a blood line and an open end, said filter header cap including a cap side surface substantially parallel to the stem side surface, said cap side surface abuts the stem side surface, and at least one of the cap side surface and stem side surface is tapered along the abutment, wherein the filter header cap is sealed to the filter housing cap, andthe filter housing including a second end having an outlet connectable to a blood line,wherein an inside diameter of the filter housing is substantially greater than an outside diameter of the stem.
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Abstract
A filter for an extracorporeal blood circuit including a bundle of hollow fibers having an end section encased in a potting material, wherein the end section of potting material has an end surface with open ends of the fibers distributed throughout the end surface, and a filter header cap having an inlet connectable to a blood line and an open end sealed around a side surface of the end section of the bundle of hollow fibers.
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Citations
13 Claims
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1. A filter for an extracorporeal blood circuit comprising:
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a bundle of hollow fibers having an end section encased in a potting material, wherein said end section further comprises a stem of fibers and potting material extending from a disk of the potting material, wherein the stem of fibers and potting material has an outside diameter along an entire length of the stem, and the stem outside diameter is substantially narrower than an outside diameter of the disk of potting material; and an end surface of the stem includes open ends of the fibers distributed throughout the end surface including open ends proximate to a perimeter of the end surface, the stem including a stem side surface substantially perpendicular to the end surface of the stem; a filter housing through which extends said bundle; a filter housing cap at a first end of the filter housing, wherein the disk of the potting material is sealed to the filter housing cap; a filter header cap including an inlet connectable to a blood line and an open end, said filter header cap including a cap side surface substantially parallel to the stem side surface, said cap side surface abuts the stem side surface, and at least one of the cap side surface and stem side surface is tapered along the abutment, wherein the filter header cap is sealed to the filter housing cap, and the filter housing including a second end having an outlet connectable to a blood line, wherein an inside diameter of the filter housing is substantially greater than an outside diameter of the stem. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A filter for an extracorporeal blood circuit comprising:
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a bundle of hollow fibers having an end section encased in a potting material, wherein said end section further comprises a stem of fibers and potting material extending from a disk of the potting material, wherein the stem of fibers and potting material has an outside diameter along an entire length of the stem, and the stem outside diameter is substantially narrower than an outside diameter of the disk of potting material; an end surface of the stem includes open ends of the fibers distributed throughout the end surface including open ends proximate to a perimeter of the end surface, the stem including a stem side surface substantially transverse to the end surface of the stem; a filter housing through which extends said bundle; a filter housing cap at a first end of said filter housing, wherein the disk of the potting material is sealed to the filter housing cap; a filter header cap including an inlet connectable to a blood line and an open end, said filter head cap including a cap side surface substantially parallel to the stem side surface, said cap side surface abuts the stem side surface, and at least one of the cap side surface and stem side surface is tapered along the abutment, wherein the filter header cap is sealed to the filter housing cap, and the housing including a second end having an outlet connectable to a blood line, wherein the disk is a ring of potting material around the bundle of hollow fibers and substantially devoid of said fibers.
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Specification