Patent US5639277A successfully refreshed from Google Patents.
US5639277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Embolic coils with offset helical and twisted helical shapes
Assignee: Target Therapeutics Inc
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Filing: 1995-09-29
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Granted: 1997-06-17
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Expires: 2015-09-29
Abstract
Abstract This is a surgical device that, in particular, is for forming a vasoocclusion or embolism. Typically, it is a helically wound coil in which the helix is wound in such a way as to have multiple axially offset, longitudinal or focal axes. Another important facet of the invention is the presence of small diameter secondary coil windings adjacent large diameter coil windings. The device is sufficiently flexible and small that it may be delivered to a site within the vasculature of the human body using a pusher and a catheter. The device is generally linear when within the catheter but relaxes to form the multi-focal form after delivery from the distal end of the catheter lumen. Various mechanical connections may also be used to discharge the inventive coil from its pusher. Similarly, the coil may be attached to a pusher using a sacrificial joint, which sacrificial joint is dissolved by imposition of a small voltage within the human body. The device may be used alone or in conjunction with other coils or with a fibrous thrombotic attachments or the substrate to localize subsequent infusion of tissue adhesives, other particulate embolization devices, or chemotherapeutic agents in abnormal blood vessels and tissues.
Inventors
- 👤 Michael J. Mariant
- 👤 Gregory E. Mirigian
- 👤 Nga T. Van
- 👤 Roberto L. Orellana
- 👤 Christopher G. M. Ken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:46
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12131; A61B17/1214; A61B17/1215; A61B17/12099; A61B17/12109; A61B17/12145; A61L; A61L27/00; A61L27/02; A61L27/04; F; F16; F16F; F16F1/00; F16F1/02; F16F1/04
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
99 words
A flexible, vaso-occlusive device for placement in a vascular lumen comprising a helically wound coil having two primary coil ends and a primary diameter, said helically wound coil being further wound into a relaxed secondary coil configuration end wherein the relaxed secondary coil configuration comprises at least two longitudinal focal axes generally parallel to each other extending between said first secondary coil end and said second secondary coil end wherein at least one loop of said helically wound coil extends radially and independently about each of said at least two longitudinal focal axes forming said relaxed secondary coil configuration.
Claim 2
Dependent Claim
99 words
A flexible, vaso-occlusive device for placement in a vascular lumen comprising a helically wound coil having two primary coil ends and a primary diameter, said helically wound coil being further wound into a relaxed secondary coil configuration end wherein the relaxed secondary coil configuration comprises at least two longitudinal focal axes generally parallel to each other extending between said first secondary coil end and said second secondary coil end wherein at least one loop of said helically wound coil extends radially and independently about each of said at least two longitudinal focal axes forming said relaxed secondary coil configuration.
Claim 3
Dependent Claim
24 words
The flexible, vaso-occlusive device of claim 1 wherein the secondary coil configuration comprises more than two longitudinal focal axes generally parallel to each other.
Claim 4
Dependent Claim
36 words
The flexible, vaso-occlusive device of claim 1 wherein the secondary coil configuration comprises multiple loops of said helically wound coil and at least one comparatively smaller loop between said first end and second secondary coil end.
Claim 5
Dependent Claim
40 words
The flexible, vaso-occlusive device of claim 3 wherein the multiple loops of said secondary coil configuration further comprise comparatively smaller loops between said first end and second secondary coil end, each said comparatively smaller loop adjacent a comparatively larger loop.
Claim 6
Dependent Claim
27 words
The flexible, vaso-occlusive device of claim 1 comprising a member selected from the group consisting of silver, gold, palladium, platinum, tungsten, iridium, stainless steel, or alloys thereof.
Claim 7
Dependent Claim
14 words
The flexible, vaso-occlusive device of claim 1 comprising an alloy of platinum and tungsten.
Claim 8
Dependent Claim
14 words
The flexible, vaso-occlusive device of claim 1 wherein the coil comprises a biocompatible polymer.
Claim 9
Dependent Claim
17 words
The flexible, vaso-occlusive device of claim 1 further comprising filamentary material attached to the helically wound coil.
Claim 10
Dependent Claim
20 words
The flexible, vaso-occlusive device of claim 8 wherein the filamentary material attached to the helically wound coil is polyethylene terephthalate.
Claim 11
Dependent Claim
43 words
The flexible, vaso-occlusive device of claim 1 wherein the secondary coil configuration comprises at least one loop having a relatively smaller diameter located adjacent said first secondary coil end and multiple loops having relatively larger diameters located adjacent said second secondary coil end.
Claim 12
Dependent Claim
42 words
The flexible, vaso-occlusive device of claim 10 wherein the at least one loop having a relatively smaller diameter located adjacent said first secondary coil end is additionally adjacent said multiple loops having relatively larger diameters located adjacent said second secondary coil end.
Claim 13
Dependent Claim
19 words
The flexible, vaso-occlusive device of claim 1 wherein one of the primary coil ends comprises an electrolytically severable joint.
Claim 14
Dependent Claim
19 words
The flexible, vaso-occlusive device of claim 11 wherein one of the primary coil ends comprises an electrolytically severable joint.
Claim 15
Dependent Claim
24 words
The flexible, vaso-occlusive device of claim 1 wherein one of the primary coil ends comprises a joint that is mechanically attachable to a pusher.
Claim 16
Dependent Claim
88 words
A flexible, vaso-occlusive device for placement in a vascular lumen comprising a helically wound coil having a primary diameter, said helically wound coil being further wound into a relaxed secondary coil configuration having a first and second end and wherein the secondary coil configuration comprises at least two longitudinal focal axes extending between said first end and said second end and wherein multiple loops of said helically wound coil extend radially and independently about said at least two longitudinal focal axes which are generally parallel to each other.
Claim 17
Dependent Claim
88 words
A flexible, vaso-occlusive device for placement in a vascular lumen comprising a helically wound coil having a primary diameter, said helically wound coil being further wound into a relaxed secondary coil configuration having a first and second end and wherein the secondary coil configuration comprises at least two longitudinal focal axes extending between said first end and said second end and wherein multiple loops of said helically wound coil extend radially and independently about said at least two longitudinal focal axes which are generally parallel to each other.
Claim 18
Dependent Claim
27 words
The flexible, vaso-occlusive device of claim 15 wherein the secondary coil configuration comprises more than about two longitudinal focal axes which are generally parallel to each other.
Claim 19
Dependent Claim
31 words
The flexible, vaso-occlusive device of claim 15 wherein the multiple loops of said secondary coil configuration comprises at least one comparatively smaller loop between said first end and second end and.
Claim 20
Dependent Claim
37 words
The flexible, vaso-occlusive device of claim 17 wherein the multiple loops of said secondary coil configuration further comparatively smaller loops between said first end and second end, each said comparatively smaller loop adjacent a comparatively larger loop.
Claim 21
Dependent Claim
27 words
The flexible, vaso-occlusive device of claim 15 comprising a member selected from the group consisting of silver, gold, palladium, platinum, tungsten, iridium, stainless steel, or alloys thereof.
Claim 22
Dependent Claim
14 words
The flexible, vaso-occlusive device of claim 15 comprising an alloy of platinum and tungsten.
Claim 23
Dependent Claim
14 words
The flexible, vaso-occlusive device of claim 15 wherein the coil comprises a biocompatible polymer.
Claim 24
Dependent Claim
17 words
The flexible, vaso-occlusive device of claim 15 further comprising filamentary material attached to the helically wound coil.
Claim 25
Dependent Claim
20 words
The flexible, vaso-occlusive device of claim 22 wherein the filamentary material attached to the helically wound coil is polyethylene terephthalate.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2000-06-16 | 2000-12-16 | 2001-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-16 | 2004-12-16 | 2005-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-16 | 2008-12-16 | 2009-06-17 | $7700.00 | Window Closed / Lapsed |