Back to results
US 5,350,398 AGranted
Self-expanding filter for percutaneous insertion
OwnerDusan Pavcnik, Sidney Wallace +1inventors
InventorsDusan Pavcnik, Sidney Wallace, Kenneth C. Wright
Life of this patent
Estimating the term…
Abstract
A flexible vena cava filter comprises a flexible stent having a plurality of flexible wire segments attached across the ends of the stent. The filter is resiliently compressible for percutaneous insertion into a fluid passageway and expands against the passageway upon placement therein. The filter includes different levels of filtration.
Claims11
A filter for placement within a fluid passageway of a living body, comprising:
- a self-expanding stent having an endless series of wire sections joined by bends into a closed zig-zag configuration that is compressible to a reduced diameter but being resiliently self-expanding from said reduced diameter to an enlarged diameter;
- wherein said stent has a cranial end and caudal end defined by said bends;
- a plurality of first wire segments attached across one end of said stent, each of said first wire segments having a first end and a second end, said first end being attached to a bend and said second end being attached to another different bend;
- wherein portions of said first wire segments overlap each other;
- a plurality of second wire segments attached across the other end of said stent, each of said second wire segments having a first end and a second end, said first end being attached to a bend and said second end being attached to another different bend;
- wherein portions of said second wire segments overlap each other;
- wherein said first wire segments define a first plurality of openings having a large filtration size;
- and
- said second wire segments define a second plurality of openings having a relatively smaller filtration size.
6 more elements
A filter for placement within a fluid passageway of a living body, comprising
- a self-expanding stent having an endless series of wire sections joined by bends into a closed zig-zag configuration that is compressible to a reduced diameter but being resiliently self-expanding from said reduced diameter to an enlarged diameter;
- wherein said stent has a cranial end and a caudal end defined by said bends, which are consecutively arranged around a central axis;
- a plurality of first wire segments attached across one end of said stent, each of said first wire segments having a first end and a second end, said first end being attached to a bend and said second end being attached to another different bend;
- wherein each of said first wire segments is attached between non-consecutive bends;
- a plurality of second wire segments attached across the other end of said stent, each of said second wire segments having a first end and a second end, said first end being attached to a bend and said second end being attached to another different bend;
- and
- wherein said first wire segments define a first plurality of openings having a large filtration size;
- and
- said second wire segments define a second plurality of openings having a relatively smaller filtration size.
6 more elements
A filter for placement within a fluid passageway of living body, comprising:
- a self-expanding stent having an endless series of wire sections joined by bends into a closed zig-zag configuration that is compressible to a reduced diameter but being resiliently self-expanding from said reduced diameter to an enlarged diameter;
- wherein said stent has a cranial end and a caudal end defined by said bends;
- a plurality of first wire segments attached across one end of said stent, each of said first wire segments having a first end and a second end, said first end being attached to a bend and said second end being attached to another different bend;
- wherein said first wire segments define a portion of a hemispherical surface;
- a plurality of second wire segments attached across the other end of said stent, each of said second wire segments having a first end and a second end, said first end being attached to a bend and said second end being attached to another different bend;
- and
- wherein said first wire segments define a first plurality of openings having a large filtration size;
- and
- said second wire segments define a second plurality of openings having a relatively smaller filtration size.
6 more elements
Dependencies are inferred from the claim text.