Patent DE620782C successfully refreshed from Google Patents.
Patent US6024765A successfully refreshed from Google Patents.
US6024765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vaso-occlusive coil with conical end
Assignee: Target Therapeutics Inc
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Filing: 1998-03-11
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Granted: 2000-02-15
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Expires: 2018-03-11
Abstract
Abstract This is an implantable vaso-occlusive coil which is implanted using minimally invasive surgical techniques. It is a complex, helically wound coil made up of a primary helically wound coil which is then wound into a specific secondary shape. The secondary shape is itself a series of helical turns. At least a portion of the turns in the secondary shape form a cylindrical region and adjacent that region on at least one end is a conical region which tapers from a diameter approximating that of the central cylindrical region to a smaller diameter. The device is desirably self-forming upon exit from the distal end of a delivery catheter. Also, the conical tipped vaso-occlusive device may also utilize thrombus-enhancing filamentary material.
Inventors
- 👤 Michael P. Wallace
- 👤 Francisco S. Villar
- 👤 Nga Thi Van
- 👤 Nestor Aganon
- 👤 Delilah Hui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:10
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12131; A61B17/1214; A61B17/12145; A61B17/1215; A61B2017/1205; A61B2017/12054; A61B2017/12063; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/88; A61F2/01; A61F2002/016; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0063; A61F2230/0091
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
59 words
A vaso-occlusive device comprising a helically wound primary coil having a diameter wherein said helically wound primary coil further comprises a helically wound secondary structure having a substantially conical portion, said substantially conical portion having a small end and a large end, said large end adjacent a central cylindrical section having a diameter approximating the conical portion large end.
Claim 2
Dependent Claim
59 words
A vaso-occlusive device comprising a helically wound primary coil having a diameter wherein said helically wound primary coil further comprises a helically wound secondary structure having a substantially conical portion, said substantially conical portion having a small end and a large end, said large end adjacent a central cylindrical section having a diameter approximating the conical portion large end.
Claim 3
Dependent Claim
33 words
The vaso-occlusive device of claim 1 where at least a portion of the helically wound secondary structure has a pitch which is at least twice the diameter of the helically wound primary coil.
Claim 4
Dependent Claim
20 words
The vaso-occlusive device of claim 1 further comprising a plurality of fibers fixedly attached to said helically wound primary coil.
Claim 5
Dependent Claim
11 words
The vaso-occlusive device of claim 3, wherein the fibers comprise tufts.
Claim 6
Dependent Claim
23 words
The vaso-occlusive device of claim 3 wherein the plurality of fibers are looped from turn to turn in said helically wound primary coil.
Claim 7
Dependent Claim
18 words
The vaso-occlusive device of claim 1 wherein said helically wound primary coil has at least one detachable end.
Claim 8
Dependent Claim
13 words
The vaso-occlusive device of claim 6 wherein the detachable end is electrolytically erodible.
Claim 9
Dependent Claim
13 words
The vaso-occlusive device of claim 6 wherein the detachable end is mechanically detachable.
Claim 10
Dependent Claim
27 words
The vaso-occlusive device of claim 1 wherein the conical portion further comprises a linear section of the primary coil adjacent the small end of said conical portion.
Claim 11
Dependent Claim
22 words
The vaso-occlusive device of claim 1 where said conical portion includes a cone having an angle between about 10° and about 90°.
Claim 12
Dependent Claim
20 words
The vaso-occlusive device of claim 10 further comprising a plurality of fibers fixedly attached to said helically wound primary coil.
Claim 13
Dependent Claim
16 words
The vaso-occlusive device of claim 1 wherein the primary coil is made of a radio-opaque material.
Claim 14
Dependent Claim
30 words
The vaso-occlusive device of claim 12 wherein the radio-opaque material is selected from the group consisting of platinum, rhodium, palladium, rhenium, tungsten, gold, silver, tantalum and alloys of these metals.
Claim 15
Dependent Claim
16 words
The vaso-occlusive device of claim 13 wherein the radio-opaque material is a platinum and tungsten alloy.
Claim 16
Dependent Claim
15 words
The vaso-occlusive device of claim 12 wherein the radio-opaque material is a super-elastic metal alloy.
Claim 17
Dependent Claim
33 words
The vaso-occlusive device of claim 15 wherein the super-elastic alloy is selected from the group consisting of nickel/titanium alloys, copper/zinc alloys, copper/zinc alloys containing beryllium, silicon, tin aluminum or gallium and nickel/aluminum alloys.
Claim 18
Dependent Claim
11 words
The vaso-occlusive device of claim 16 wherein the alloy is nitinol.
Claim 19
Dependent Claim
13 words
The vaso-occlusive device of claim 12 wherein the radio-opaque material is a polymer.
Claim 20
Dependent Claim
27 words
The vaso-occlusive device of claim 18 wherein the polymer is selected from the group consisting of polyethylene terephthalate, polyglycolic acid, polylactic acid, polytetrafluoroethylene, nylon, silk or cotton.
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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) | 2003-02-14 | 2003-08-16 | 2004-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-02-14 | 2007-08-16 | 2008-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-02-14 | 2011-08-16 | 2012-02-15 | $7700.00 | Window Closed / Lapsed |