Multi-strand septal occluder
OwnerDavid Widomski, John Wrightinventors
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Abstract
Disclosed herein are devices and methods for occluding intracardiac defects, such as a patent foramen ovale (PFO). The devices according to the invention have various features to improve flexibility and to enhance conformability of the device to the defect, including the incorporation of braided or multi-stranded wire. The invention also contemplates methods of making these devices.
Claims26
A flexible septal occluder, comprising:
- a first portion comprising a plurality of arms and a flexural point disposed on at least one of said arms;
- a second portion comprising a plurality of arms;
- and
- a central body portion joining said first portion with said second portion,
- wherein at least one of said arms comprises a plurality of strands, said plurality of strands forming a bundle of strands interrupted at said flexural point by a gap in said strands.
A flexible septal occluder, comprising:
- a first portion comprising a plurality of arms, at least one of said arms comprising a plurality of strands forming a bundle of strands, said bundle of strands comprising a first loop and a second loop;
- and
- a second portion comprising a plurality of arms;
- and
- a central body portion joining said first portion with said second portion,
- wherein said first loop comprises a different diameter than said second loop, thereby enhancing flexibility of said septal occluder.
The flexible septal occluder of clam 8, wherein said first loop and said second loop are adjacent.
A flexible septal occluder, comprising:
- a first portion comprising a plurality of arms;
- a second portion comprising a plurality of arms;
- and
- a central body portion joining said first portion with said second portion, said central body portion comprising a plurality of strands forming a bundle of strands, a first loop and a second loop, wherein said first loop comprises a different diameter than said second loop, thereby enhancing flexibility of the septal occluder.
A flexible septal occluder, comprising:
- a first portion comprising a plurality of arms comprising a plurality of strands;
- a second portion comprising a plurality of arms comprising a plurality of strands;
- and
- a central body portion comprising a plurality of strands, wherein one of the strands of the first, second, or central body portions comprises a non-circular cross-section.
A method for making a flexible septal occluder, comprising:
- providing a first portion comprising a plurality of arms, said arms comprising a first wire and a second wire;
- and
- providing a second portion comprising a plurality of arms, said arms comprising a first wire and a second wire;
- and
- providing a central body portion comprising a first wire and a second wire,
- wherein said first wire of said first portion, second portion, or central body portion is annealed at a first temperature and said second wire of said first portion, second portion, or central portion is annealed at a second temperature, and
- assembling said first portion, second portion, and central body portion to form said flexible septal occluder.
A flexible septal occluder, comprising:
- a first portion comprising a plurality of arms;
- a second portion comprising a plurality of arms;
- and
- a central body portion comprising a coil.
Dependencies are inferred from the claim text.