Patent US6004338A successfully refreshed from Google Patents.
US6004338A
Expired / Lapsed
US
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Stretch resistant vaso-occlusive coils
Assignee: Stryker European Operations Holdings LLC
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Filing: 1998-08-11
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Granted: 1999-12-21
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Expires: 2018-08-11
Abstract
Abstract This is an implantable vaso-occlusive device. It is typically a vaso-occlusive coil comprised of 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 fixedly attached within at least a portion of the primary coil. The stretch-resisting member may be formed into coil tips at the ends of the coil by melting the polymeric fibers or alloys or by attaching the fibers with a glue. 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 typically has a self-forming secondary shape made from a pre-formed primary linear helically wound coil, although it need not have the secondary form. External fibers may be attached to the device and affixed to the pre-formed linear member to increase . 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
- 👤 Son M. Gia
- 👤 Erik T. Engelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:00
CPC Classifications
A; A61; A61M; A61M29/00; 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: 10
Claim 1
Independent Claim
66 words
A vaso-occlusive device comprising: i. an outer helically wound primary coil having a first end and a second end, an axis between said first and second ends, and having a lumen between said first end and second end, and ii. a stretch-resisting member extending through at least a portion of said lumen and fixedly attached to said primary coil in at least two axially separated locations.
Claim 2
Dependent Claim
66 words
A vaso-occlusive device comprising: i. an outer helically wound primary coil having a first end and a second end, an axis between said first and second ends, and having a lumen between said first end and second end, and ii. a stretch-resisting member extending through at least a portion of said lumen and fixedly attached to said primary coil in at least two axially separated locations.
Claim 3
Dependent Claim
121 words
A vaso-occlusive device comprising: i. an outer helically wound primary coil having a first end and a second end, an axis between said first and second ends, and having a lumen between said first end and second end, ii. a polymeric stretch-resisting member extending through at least a portion of said lumen and fixedly attached to said primary coil in at least two axially separated locations; and iii. a deployment tip attached to at least one of said first end or said second end, said deployment tip comprising an electrolytically detachable end adapted to detach from a pusher by imposition of a current upon said pusher, and wherein the polymeric stretch-resisting member allows for repositioning of the vaso-occlusive device after deployment.
Claim 4
Dependent Claim
121 words
A vaso-occlusive device comprising: i. an outer helically wound primary coil having a first end and a second end, an axis between said first and second ends, and having a lumen between said first end and second end, ii. a polymeric stretch-resisting member extending through at least a portion of said lumen and fixedly attached to said primary coil in at least two axially separated locations; and iii. a deployment tip attached to at least one of said first end or said second end, said deployment tip comprising an electrolytically detachable end adapted to detach from a pusher by imposition of a current upon said pusher, and wherein the polymeric stretch-resisting member allows for repositioning of the vaso-occlusive device after deployment.
Claim 5
Dependent Claim
12 words
The device of claim 2 where the device has a secondary form.
Claim 6
Dependent Claim
16 words
The device of claim 3 wherein said secondary form is C-shaped, clover-leaf shaped or double-looped shape.
Claim 7
Dependent Claim
15 words
The device of claim 2 additionally comprising external filamentary material attached to said primary coil.
Claim 8
Dependent Claim
23 words
The device of claim 5 wherein the external filamentary material comprises a looped fibrous elements or a fibrous woven or braided tubular member.
Claim 9
Dependent Claim
12 words
The device of claim 2 wherein the stretch-resisting member comprises a ribbon.
Claim 10
Dependent Claim
16 words
The device of claim 7 wherein said secondary form is C-shaped, clover-leaf shaped or double-looped shape.
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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) | 2002-12-20 | 2003-06-21 | 2003-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-12-20 | 2007-06-21 | 2007-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-12-20 | 2011-06-21 | 2011-12-21 | $7700.00 | Window Closed / Lapsed |