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US6013084A
Expired / Lapsed
US
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Stretch resistant vaso-occlusive coils (II)
Assignee: Stryker European Operations Holdings LLC
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Filing: 1997-06-20
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Granted: 2000-01-11
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Expires: 2017-06-20
Abstract
Abstract This is an implantable vaso-occlusive device. It is typically a vaso-occlusive coil comprising a primary helically wound coil which may then be wound into a secondary shape. Central to the invention is the use of a stretch-resisting member extending through the lumen formed, which stretch-resisting member is fixedly attached, directly or indirectly, to the coil in at least two locations. The stretch-resisting member is preferably somewhat loose within the interior of the lumen so to prevent the coil from collapsing, binding, and therefore stiffening during passage of turns through the human body. The coil should bend easily. In some variations of the invention, the stretch-resisting member may be formed into coil tips at the ends of the coil using simple equipment such as soldering irons or the like. The tips are typically of the same diameter as is the coil body itself. This stretch-resisting member is for the primary purpose of preventing stretching of the coil during movement of that coil, e.g., by retrieval or repositioning after deployment. The device may have a self-forming secondary shape made from a pre-formed primary linear helically wound coil, although it need not have the secondary form. Desirably, the coil is extremely flexible and is controllaby released using a severable or mechanical joint such as an electrolytically detachable joint. External fibers may be attached to the device and affixed to the pre-formed linear member to increase thrombogenicity. The extremely flexible variation of the invention may be hydraulically delivered through the lumen of a catheter and is so flexible that it may be retrievably delivered therethrough a flow-directed catheter. The vaso-occlusive member may be also be covered with a fibrous braid. The device is typically introduced into the body through a catheter. The device is passed axially through the catheter sheath and assumes its secondary form upon exiting the catheter.
Inventors
- 👤 Christopher G. M. Ken
- 👤 Joseph C. Eder
- 👤 Clifford Teoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:02
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12099; A61B17/12109; A61B17/12113; A61B17/12131; A61B17/1214; A61B17/12145; A61B17/1215; A61B17/12154; A61B2017/00831; A61B2017/00867; A61B2017/1205; A61B2017/12054; A61B2017/12063; A61B90/00; A61B90/39; A61B2090/3937; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30092; A61F2210/00; A61F2210/0014; A61F2210/0019
Claims Analysis
Total Claims: 46
Claim 1
Independent Claim
110 words
A vaso-occlusive device comprising: i. an outer helically wound coil having a primary shape, first end, and a second end, said coil defining a lumen between said first end and second end, the helically wound coil further having a secondary shape different from the primary shape; and ii. a stretch-resisting member comprising at least one polymeric filament having a first end and a second end, the stretch-resisting member extending through at least a portion of said lumen, said stretch-resisting member not substantially affecting the shape of said coil when said coil is in said secondary shape, and said stretch-resisting member being attached to said coil in at least two locations.
Claim 2
Dependent Claim
110 words
A vaso-occlusive device comprising: i. an outer helically wound coil having a primary shape, first end, and a second end, said coil defining a lumen between said first end and second end, the helically wound coil further having a secondary shape different from the primary shape; and ii. a stretch-resisting member comprising at least one polymeric filament having a first end and a second end, the stretch-resisting member extending through at least a portion of said lumen, said stretch-resisting member not substantially affecting the shape of said coil when said coil is in said secondary shape, and said stretch-resisting member being attached to said coil in at least two locations.
Claim 3
Dependent Claim
22 words
The device of claim 1 wherein the stretch-resisting member has been heat-treated in said lumen when said coil is in said secondary.
Claim 4
Dependent Claim
11 words
The device of claim 1 wherein the polymeric filament is thermoplastic.
Claim 5
Dependent Claim
20 words
The device of claim 1 wherein the polymeric filament is melted onto at least several helical turns of the coil.
Claim 6
Dependent Claim
47 words
The device of claim 1 wherein the first end of the polymeric filament is sealed to the first end of the coil to form a cap and the second end of the polymeric filament is sealed to the second end of the coil to form a cap.
Claim 7
Dependent Claim
23 words
The device of claim 1 wherein the stretch-resisting member has been secured to said coil when the coil is in the secondary shape.
Claim 8
Dependent Claim
25 words
The device of claim 1 comprising a deployment tip attached to at least one of said first end or said second end of said coil.
Claim 9
Dependent Claim
23 words
The device of claim 7 wherein said deployment tip comprises a mechanically detachable end adapted to attach to and detach from a pusher.
Claim 10
Dependent Claim
28 words
The device of claim 7 wherein said deployment tip comprises an electrolytically detachable end adapted to detach from a pusher by imposition of a current on said pusher.
Claim 11
Dependent Claim
27 words
The device of claim 1 wherein said helically wound coil comprises a metal selected from the group consisting of platinum, palladium, rhodium, gold, tungsten, and their alloys.
Claim 12
Dependent Claim
17 words
The device of claim 10 wherein said helically wound coil comprises an alloy of platinum and tungsten.
Claim 13
Dependent Claim
24 words
The device of claim 1 wherein said helically wound coil comprises an alloy selected from the group consisting of stainless steels and superelastic alloys.
Claim 14
Dependent Claim
15 words
The device of claim 12 wherein said helically wound coil comprises a nickel-titanium super-elastic alloy.
Claim 15
Dependent Claim
12 words
The device of claim 1 comprising a polymer containing a radio-opaque filler.
Claim 16
Dependent Claim
15 words
The device of claim 1 additionally comprising external filamentary material attached to said primary coil.
Claim 17
Dependent Claim
33 words
The device of claim 1 wherein the stretch-resisting member comprises a polymeric filament selected from the group consisting of polypropylene, polyethylene terephthalate, nylon, polyethylene, polybutylene, polyglycolic acid, polylactic acid, polytetrafluoroethylene, silk, and collagen.
Claim 18
Dependent Claim
11 words
The device of claim 16 wherein said stretch-resisting member comprises polypropylene.
Claim 19
Dependent Claim
13 words
The device of claim 17 wherein the stretch-resisting member comprises 10-0 polypropylene sutures.
Claim 20
Dependent Claim
13 words
The device of claim 17 wherein the stretch-resisting member comprises 9-0 polypropylene sutures.
Claim 21
Dependent Claim
17 words
The device of claim 1 wherein said cap is of the same diameter as said primary coil.
Claim 22
Dependent Claim
28 words
The device of claim 1 wherein the helically wound primary coil has a flexibility such that one free centimeter will flex more than about 20° when held horizontally.
Claim 23
Dependent Claim
23 words
The device of claim 1 further comprising, in combination, a flow-directed catheter surrounding at least a portion of said helically wound primary coil.
Claim 24
Dependent Claim
125 words
A vaso-occlusive device comprising: i. an outer helically wound coil having a primary shape, first end, and a second end, said coil defining a lumen between said first end and second end, the helically wound coil further having a secondary shape different from the primary shape; and ii. a stretch-resisting member comprising at least one polymeric filament having a first end and a second end, the stretch-resisting member extending through at least a portion of said lumen, said stretch-resisting member not substantially affecting the shape of said coil when said coil is in said secondary shape, said stretch-resisting member being attached to said coil in at least two locations, and said stretch-resisting member being fixedly attached to a hook within the lumen of said coil.
Claim 25
Dependent Claim
125 words
A vaso-occlusive device comprising: i. an outer helically wound coil having a primary shape, first end, and a second end, said coil defining a lumen between said first end and second end, the helically wound coil further having a secondary shape different from the primary shape; and ii. a stretch-resisting member comprising at least one polymeric filament having a first end and a second end, the stretch-resisting member extending through at least a portion of said lumen, said stretch-resisting member not substantially affecting the shape of said coil when said coil is in said secondary shape, said stretch-resisting member being attached to said coil in at least two locations, and said stretch-resisting member being fixedly attached to a hook within the lumen of said coil.
Claim 26
Dependent Claim
23 words
The device of claim 23 wherein the stretch-resisting member has been heat-treated in said lumen when said coil is in said secondary shape.
Claim 27
Dependent Claim
11 words
The device of claim 23 wherein the polymeric filament is thermoplastic.
Claim 28
Dependent Claim
20 words
The device of claim 23 wherein the polymeric filament is melted onto at least several helical turns of the coil.
Claim 29
Dependent Claim
47 words
The device of claim 23 wherein the first end of the polymeric filament is scaled to the first end of the coil to form a cap and the second end of the polymeric filament is sealed to the second end of the coil to form a cap.
Claim 30
Dependent Claim
23 words
The device of claim 23 wherein the stretch-resisting member has been secured to said coil when the coil is in the secondary shape.
Claim 31
Dependent Claim
25 words
The device of claim 23 comprising a deployment tip attached to at least one of said first end or said second end of said coil.
Claim 32
Dependent Claim
23 words
The device of claim 29 wherein said deployment tip comprises a mechanically detachable end adapted to attach to and detach from a pusher.
Claim 33
Dependent Claim
28 words
The device of claim 29 wherein said deployment tip comprises an electrolytically detachable end adapted to detach from a pusher by imposition of a current on said pusher.
Claim 34
Dependent Claim
27 words
The device of claim 23 wherein said helically wound coil comprises a metal selected from the group consisting of platinum, palladium, rhodium, gold, tungsten, and their alloys.
Claim 35
Dependent Claim
17 words
The device of claim 32 wherein said helically wound coil comprises an alloy of platinum and tungsten.
Claim 36
Dependent Claim
24 words
The device of claim 23 wherein said helically wound coil comprises an alloy selected from the group consisting of stainless steels and super-elastic alloys.
Claim 37
Dependent Claim
15 words
The device of claim 34 wherein said helically wound coil comprises a nickel-titanium super-elastic alloy.
Claim 38
Dependent Claim
12 words
The device of claim 23 comprising a polymer containing a radio-opaque filler.
Claim 39
Dependent Claim
15 words
The device of claim 23 additionally comprising external filamentary material attached to said primary coil.
Claim 40
Dependent Claim
33 words
The device of claim 23 wherein the stretch-resisting member comprises a polymeric filament selected from the group consisting of polypropylene, polyethylene terephthalate, nylon, polyethylene, polybutylene, polyglycolic acid, polylactic acid, polytetrafluoroethylene, silk, and collagen.
Claim 41
Dependent Claim
11 words
The device of claim 38 wherein said stretch-resisting member comprises polypropylene.
Claim 42
Dependent Claim
13 words
The device of claim 39 wherein the stretch-resisting member comprises 10-0 polypropylene sutures.
Claim 43
Dependent Claim
13 words
The device of claim 40 wherein the stretch-resisting member comprises 9-0 polypropylene sutures.
Claim 44
Dependent Claim
17 words
The device of claim 23 wherein said cap is of the same diameter as said primary coil.
Claim 45
Dependent Claim
28 words
The device of claim 23 wherein the helically wound primary coil has a flexibility such that one free centimeter will flex more than about 20° when held horizontally.
Claim 46
Dependent Claim
23 words
The device of claim 23 further comprising, in combination, a flow-directed catheter surrounding at least a portion of said helically wound primary coil.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-01-10 | 2003-07-12 | 2004-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-01-10 | 2007-07-12 | 2008-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-01-10 | 2011-07-12 | 2012-01-11 | $7700.00 | Window Closed / Lapsed |