Braided intraluminal filter
First Claim
1. A tubular intraluminal filter having proximal and distal ends, a longitudinal axis, a collapsed configuration and an expanded configuration, the expanded configuration having a generally cylindrical body and adjoining proximal and distal sections that taper from the cylindrical body to proximal and distal filter ends, respectively, wherein relative movement of the proximal and distal ends along the axis accompanies transformation of the filter between the collapsed configuration and the expanded configuration, the filter comprising:
- a first array of braided filaments extending proximally from the filter distal end to a proximal terminus within a junction region between the cylindrical body and the tapered proximal section; and
a second array of filaments inter-braided with the first array and extending a full length of the filter, wherein the filter proximal section is defined by two or more strands, each strand being intra-braided from groups of filaments of the second array.
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Accused Products
Abstract
A braided intraluminal filter having large inlet ports, and methods for making the filter. Selected braid filaments are severed such that they do not extend through a proximal section of the filter. The un-severed filaments are divided into groups that are intra-braided into slender strands forming the proximal section of the filter. Large inlet ports are defined between the slender strands.
61 Citations
14 Claims
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1. A tubular intraluminal filter having proximal and distal ends, a longitudinal axis, a collapsed configuration and an expanded configuration, the expanded configuration having a generally cylindrical body and adjoining proximal and distal sections that taper from the cylindrical body to proximal and distal filter ends, respectively, wherein relative movement of the proximal and distal ends along the axis accompanies transformation of the filter between the collapsed configuration and the expanded configuration, the filter comprising:
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a first array of braided filaments extending proximally from the filter distal end to a proximal terminus within a junction region between the cylindrical body and the tapered proximal section; and
a second array of filaments inter-braided with the first array and extending a full length of the filter, wherein the filter proximal section is defined by two or more strands, each strand being intra-braided from groups of filaments of the second array. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of making an intraluminal filter, the method comprising:
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braiding multiple filaments to form a filter precursor tube;
demarcating tube regions that are intended to become a proximal filter section, a cylindrical filter body, and a junction region there between;
severing selected filaments at the junction and removing severed filaments from the proximal filter section;
dividing the un-severed filaments in the proximal filter section into two or more groups;
intra-braiding each group of filaments into a corresponding strand; and
heat-treating the filter to set a selected shape thereof. - View Dependent Claims (12, 13, 14)
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Specification