US5690666A
Expired / Lapsed
US
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Ultrasoft embolism coils and process for using them
Assignee: New York University
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Filing: 1992-11-18
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Granted: 1997-11-25
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Expires: 2012-11-18
Abstract
Abstract This invention is an exceptionally flexible, ultrasoft vaso-occlusive or embolism forming device. It is made of a radiopaque material which may be braided or coiled to form a long, thin threadlike device having little rigidity or column strength. The diameter of the device may be less than about 0.010 inches. The wire making up the device used to form the coil or braid is typically of a diameter less than about 0.002 inches. The device is sufficiently flexible and small that it may be hydraulically delivered to a site within the vasculature of the human body using an injected drug or fluid flush through a catheter. The device assumes a loose, random mass of threadlike material after being ejected from the catheter tip at the chosen vascular site. The device (whether coil or braid) may be used alone or in conjunction with larger coils or braids to achieve a denser occlusion or as a substrate to localize the subsequent infusion of tissue adhesives, particulate embolization devices, or chemotherapeutic agents in abnormal blood vessels and tissues or for the temporary occlusion of blood vessels during types of diminished blood flow testing. The invention also include processes for introducing the devices into the human body.
Inventors
- 👤 Alejandro Berenstein
- 👤 Ivan Sepetka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:40
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12027; A61B17/1204; A61B17/12099; A61B17/12109; A61B17/12131; A61B17/1214; A61B17/1215; A61B17/12163; A61B2017/00526; A61B2017/00535; A61B2017/00539; A61B2017/1205; A61B2017/12054; A61B2017/12063; A61B2017/1209; A61B90/00; A61B90/39
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
42 words
A flexible, vaso-occlusive device comprising a radiopaque coil having an outside diameter less than about 0.010 inches which is sufficiently flexible that a 1 cm length of coil supported horizontally at one end will deflect more than 20° under its own weight.
Claim 2
Dependent Claim
42 words
A flexible, vaso-occlusive device comprising a radiopaque coil having an outside diameter less than about 0.010 inches which is sufficiently flexible that a 1 cm length of coil supported horizontally at one end will deflect more than 20° under its own weight.
Claim 3
Dependent Claim
23 words
The device of claim 1, wherein the material of the coil comprises silver, gold, palladium, platinum, tungsten, iridium, stainless steel, or alloys thereof.
Claim 4
Dependent Claim
16 words
The device of claim 2 wherein the radiopaque material comprises an alloy of platinum and tungsten.
Claim 5
Dependent Claim
11 words
The device of claim 1 wherein the coil is regularly wound.
Claim 6
Dependent Claim
12 words
The device of claim 1 wherein the coil is not regularly wound.
Claim 7
Dependent Claim
19 words
The device of claim 1 wherein the outside diameter is between 0.004 inches but less than about 0.0095 inches.
Claim 8
Dependent Claim
15 words
The device of claim 6 wherein the outside diameter is between 0.004 and 0.0075 inches.
Claim 9
Dependent Claim
21 words
The device of claim 1 wherein the coil comprises wire having a diameter of between 0.00075 and less than 0.00225 inches.
Claim 10
Dependent Claim
19 words
The device of claim 8 wherein the coil comprises wire having a diameter of between 0.001 and 0.002 inches.
Claim 11
Dependent Claim
17 words
The device of claim 8 wherein the coil comprises wire having a diameter of about 0.001 inches.
Claim 12
Dependent Claim
32 words
The device of claim 1 wherein the device is sufficiently flexible that a 1 cm length of coil supported horizontally at one end will deflect more than 35° under its own weight.
Claim 13
Dependent Claim
18 words
The device of claim 1 wherein the length of the device is between 2 mm and 120 cm.
Claim 14
Dependent Claim
18 words
The device of claim 12 wherein the length of the device is between 30 cm and 120 cm.
Claim 15
Dependent Claim
32 words
A flexible, vaso-occlusive device comprising a coil which is sufficiently flexible that a 1 cm length of coil supported horizontally at one end will deflect more than 20° under its own weight.
Claim 16
Dependent Claim
32 words
A flexible, vaso-occlusive device comprising a coil which is sufficiently flexible that a 1 cm length of coil supported horizontally at one end will deflect more than 20° under its own weight.
Claim 17
Dependent Claim
23 words
The device of claim 14, wherein the material of the coil comprises silver, gold, platinum, palladium, tungsten, iridium, stainless steel, or alloys thereof.
Claim 18
Dependent Claim
15 words
The device of claim 15 wherein the device comprises an alloy of platinum and tungsten.
Claim 19
Dependent Claim
11 words
The device of claim 14 wherein the coil is regularly wound.
Claim 20
Dependent Claim
12 words
The device of claim 14 wherein the coil is not regularly wound.
Claim 21
Dependent Claim
19 words
The device of claim 14 wherein the coil comprises wire having a diameter of between 0.00075 and 0.00225 inches.
Claim 22
Dependent Claim
19 words
The device of claim 19 wherein the coil comprises wire having a diameter of between 0.001 and 0.002 inches.
Claim 23
Dependent Claim
17 words
The device of claim 20 wherein the coil comprises wire having a diameter of about 0.001 inches.
Claim 24
Dependent Claim
29 words
The device of claim 14 wherein the coil comprises a ribbon having a major axis between 0.001 and 0.002 inches and a minor axis between 0.0005 and 0.001 inches.
Claim 25
Dependent Claim
33 words
The device of claim 14 wherein the device is sufficiently flexible that a 1 cm length of the device supported horizontally at one end will deflect more than 35° under its own weight.
Claim 26
Dependent Claim
18 words
The device of claim 14 wherein the length of the device is between 2 mm and 120 cm.
Claim 27
Dependent Claim
18 words
The device of claim 24 wherein the length of the device is between 30 cm and 120 cm.
Claim 28
Dependent Claim
39 words
A flexible, vasoocclusive device having an outside diameter less than about 0.010 inches which is sufficiently flexible that a 1 cm length of said device supported horizontally at one end will deflect more than 20° under its own weight.
Claim 29
Dependent Claim
39 words
A flexible, vasoocclusive device having an outside diameter less than about 0.010 inches which is sufficiently flexible that a 1 cm length of said device supported horizontally at one end will deflect more than 20° under its own weight.
Claim 30
Dependent Claim
35 words
The device of claim 26, wherein the device is selected from radiopaque coils, radiopaque braids, sequences of coils and braids joined at their respective ends, or coils having tubular braids woven on their exterior surfaces.
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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 |