Woven wire intraluminal device
Inventors
Sudin, Yuri • Friedman, Aharon • Eckhouse, Ronen • Miller, Moshe
Assignees
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Publication Number
US-12016581-B2
Publication Date
2024-06-25
Expiration Date
Abstract
An intraluminal device including an elongated structure formed of a plurality of wires may be provided. The intraluminal device may include a plurality of sets of looped wires longitudinally located at an intermediate area of the elongated structure. The sets of looped wires may be spaced circumferentially about the elongated structure and may be configured to cooperate with each other to form a plurality of clot entry openings. The intraluminal device may also include at least one grouping of woven wires that may be longitudinally located adjacent to the intermediate area and may be configured such that when an opening force is exerted on the elongated structure, the at least one grouping of woven wires may provide structural support to hold open first interstices between the plurality of sets of looped wires.
Core Innovation
The disclosed invention is an intraluminal device for retrieving blood clots. The device has an elongated structure formed of a plurality of wires, including intertwined strands that create loosely coupled junctions. Each strand includes a set of two or more wires that are looped together.
Within the intermediate portion, a clot capturing area is longitudinally located and configured to cooperate to form clot entry openings. The strands are spaced circumferentially about the elongated structure to create a plurality of clot entry openings, and the clot capturing area includes at least two strand configurations or at least two braiding configurations at the loosely coupled junctions. Each junction includes a weaving of a first strand and a second strand such that a first wire of the first strand is situated between two wires of the second strand, and a second wire of the second strand is situated between two wires of the first strand.
The invention further includes at least one grouping of woven wires longitudinally located adjacent to the clot capturing area. The woven-wire grouping is configured so that when an opening force is exerted on the elongated structure, the woven-wire grouping provides structural support to hold open first interstices between the strands, and in response to the opening force, second interstices are formed between wires in the woven-wire grouping, with the first interstices being larger than the second interstices.
The strand configuration within the clot capturing area includes a twist of wires before and after each loosely coupled junction to reduce slippage and resist collapse while maintaining the clot-capture mesh/cell size.
Claims Coverage
The independent claim provides coverage for 2 inventive features: a loosely coupled wire-strand clot capturing area with circumferential clot entry openings, and an adjacent woven-wire grouping that maintains a first-versus-second interstice size relationship under an opening force.
Loosely coupled looped strands forming circumferential clot entry openings
An intraluminal device having an elongated structure formed of a plurality of wires, where strands are intertwined to create a plurality of loosely coupled junctions, each strand comprising a set of two or more wires looped together, and where a clot capturing area longitudinally located in the intermediate portion has strands spaced circumferentially to cooperate and form a plurality of clot entry openings, including at least two strand configurations or braiding configurations at the loosely coupled junctions with woven first- and second-strand cross-positioning and a twist of wires before and after each loosely coupled junction.
Woven-wire grouping that holds larger first interstices and forms smaller second interstices under opening force
An at least one grouping of woven wires longitudinally located adjacent to the clot capturing area, configured so that when an opening force is exerted on the elongated structure, the woven-wire grouping provides structural support to hold open first interstices between the plurality of strands, while in response to the opening force second interstices are formed between wires in the woven-wire grouping, wherein the first interstices are larger than the second interstices.
The claim coverage centers on the combination of a loosely coupled, looped-strand clot capturing area that forms clot entry openings through specified braiding and weaving interactions, and adjacent longitudinal woven-wire groupings that maintain larger first interstices while producing smaller second interstices under an opening force.
Stated Advantages
Holds open first interstices between the plurality of strands when an opening force is exerted.
Forms smaller second interstices between wires in the woven-wire grouping in response to an opening force, with first interstices larger than second interstices.
The twist of wires before and after each loosely coupled junction reduces slippage and resists collapse while maintaining the clot-capture mesh/cell size.
Documented Applications
No documented applications found
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