US5690667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vasoocclusion coil having a polymer tip
Assignee: Stryker European Operations Holdings LLC
•
Filing: 1996-09-26
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Granted: 1997-11-25
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Expires: 2016-09-26
Abstract
Abstract A vasoocclusive helical metal coil having a thermoplastic polymer plug in at least one of its ends that has been melted so that it molds to the coil windings and insulates and blunts the end(s).
Inventors
- 👤 Son M. Gia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:05
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12131; A61B17/1214; A61B17/1215; A61B17/12145
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
70 words
A vasoocclusion coil comprising a helical coil having a multiplicity of windings that define a lumen, a first end and a second end, and a plug of thermoplastic biocompatible polymer comprised of a first portion that extends into the lumen at said first end and is molded into the windings defining said first end and a second rounded portion that extends axially outwardly from said lumen at said first end.
Claim 2
Dependent Claim
70 words
A vasoocclusion coil comprising a helical coil having a multiplicity of windings that define a lumen, a first end and a second end, and a plug of thermoplastic biocompatible polymer comprised of a first portion that extends into the lumen at said first end and is molded into the windings defining said first end and a second rounded portion that extends axially outwardly from said lumen at said first end.
Claim 3
Dependent Claim
12 words
The vasoocclusion coil of claim 1 wherein the polymer is a polyester.
Claim 4
Dependent Claim
13 words
The vasoocclusion coil of claim 1 wherein the windings are made of metal.
Claim 5
Dependent Claim
18 words
The vasoocclusion coil of claim 1 wherein said first portion extends 1 to 5 windings into the lumen.
Claim 6
Dependent Claim
30 words
The vasoocclusion coil of claim 1 including a sheath of a thermoplastic biocompatible polymer that encases and is molded to the exterior surface of the windings defining the first end.
Claim 7
Dependent Claim
60 words
The vasoocclusion coil of claim 1 further comprising a strand of said polymer having a first end connected to the first portion of the plug, a second end, and a segment intermediate said first and second ends that extends axially along the coil in a generally serpentine configuration composed of loops that extend through the coil windings at spaced intervals.
Claim 8
Dependent Claim
58 words
The vasoocclusion coil of claim 1 further comprising a second plug of thermoplastic biocompatible polymer comprised of a first portion that extends into the lumen at said second end of the coil and is molded into the windings defining said second end and a second rounded portion that extends axially outwardly from said lumen at said second end.
Claim 9
Dependent Claim
65 words
The vasoocclusion coil of claim 7 comprising a strand of a biocompatible polymer having a first end connected to said first plug, a second end connected to said second plug, and a segment intermediate said first and second ends of the strand that extends axially along the coil in a generally serpentine configuration composed of loops that extend through the coil windings at spaced intervals.
Claim 10
Dependent Claim
43 words
An assembly for use in occluding a vessel or vascular cavity comprising: (a) a wire having a distal end; (b) the vasoocclusion coil of claim 1 wherein the distal end of the wire is detachably coupled to the second end of the coil.
Claim 11
Dependent Claim
26 words
The assembly of claim 9 wherein the distal end of the wire is coupled to the second end of the coil by a mechanically detachable joint.
Claim 12
Dependent Claim
30 words
The assembly of claim 9 wherein the distal end of the wire is coupled to the second end of the coil by a metal joint that is susceptible to electrolysis.
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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) | 2000-11-24 | 2001-05-26 | 2001-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-11-24 | 2005-05-26 | 2005-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-11-24 | 2009-05-26 | 2009-11-25 | $7700.00 | Window Closed / Lapsed |