Vasoocclusion coil with attached fibrous element(s)

Claim 2

A vasoocclusive device comprising: (a) a helical coil for occluding blood flow having a multiplicity of windings extending between a first end and a second end, said helical coil being from 2 to 100 cm in length and from 0.05 to 0.2 cm in diameter; and (b) at least one fibrous element having a first end and a second end, with the portion of the element intermediate said ends extending axially along the coil in a generally serpentine configuration composed of a plurality of loops having maxima that extend radially outwardly and minima that extend radially inwardly and are threaded about individual windings at spaced intervals along the coil.

Claim 3

The device of claim 1 wherein the fibrous element is attached to the proximal end of the helical coil and extends over about 10% to 90% of the length of the coil.

Claim 4

The device of claim 1 wherein there are a multiplicity of fibrous elements.

Claim 5

The device of claim 1 wherein there are 1 to 4 fibrous elements.

Claim 6

The device of claim 1 wherein the fibrous element is a bundle of individual fibers.

Claim 7

The device of claim 1 wherein the fibrous element is a monofilament.

Claim 8

The device of claim 1 wherein the length of an individual loop is 0.1 to 2 cm.

Claim 9

The device of claim 1 wherein said spaced interval is about 0.05 to 1 cm in length.

Claim 10

The device of claim 7 wherein said spaced interval is about 0.05 to 1 cm in length.

Claim 11

The device of claim 9 wherein the fibrous element is a bundle of about 5 to 100 individual fibers, there are 1 to 4 fibrous elements, the length of the helical coil is 2 to 100 cm, the fibrous elements are affixed to the proximal end of the helical coil, and the fibrous elements extend over about 25% to 50% of the length of the coil.

Claim 12

The device of claim 1 wherein the first end of the fibrous element is attached to one of said windings in the region of the first end of the coil and the second end is attached to another of said windings.

Claim 13

The device of claim 10 wherein the first end of the fibrous element is attached to one of said windings in the region of the first end of the coil and the second end is attached to another of said windings.

Claim 14

A vasoocclusive device comprising: (a) a helical coil for occluding blood flow having a multiplicity of windings extending between a first end and a second end; and (b) at least one fibrous element having a first end and a second end, with the portion of the element intermediate said ends extending axially along the coil in a generally serpentine configuration composed of a plurality of loops having maxima that extend radially outwardly and minima that extend radially inwardly and are threaded about individual windings at spaced intervals along the coil; wherein said helical coil is in a conformation selected from the group consisting of a cloverleaf-shaped conformation, a twisted figure 8-shaped conformation and a C-shaped conformation.

Claim 15

A vasoocclusive device comprising: (a) a helical coil for occluding blood flow having a multiplicity of windings extending between a first end and a second end; and (b) at least one fibrous element having a first end and a second end, with the portion of the element intermediate said ends extending axially along the coil in a generally serpentine configuration composed of a plurality of loops having maxima that extend radially outwardly and minima that extend radially inwardly and are threaded about individual windings at spaced intervals along the coil; wherein said helical coil is in a conformation selected from the group consisting of a cloverleaf-shaped conformation, a twisted figure 8-shaped conformation and a C-shaped conformation.

Claim 16

The device of claim 13 wherein the helical coil is in a cloverleaf-shaped conformation.

Claim 17

The device of claim 13 wherein the helical coil is in a twisted figure 8-shaped conformation.

Claim 18

The device of claim 13 wherein the helical coil is in a C-shaped conformation.