Patent US5826587A successfully refreshed from Google Patents.
US5826587A
Expired / Lapsed
US
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Ultrasoft embolism coils and process for using them
Assignee: Stryker European Operations Holdings LLC
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Filing: 1997-05-28
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Granted: 1998-10-27
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Expires: 2017-05-28
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 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
2026-10-30 19:06
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: 19
Claim 1
Independent Claim
78 words
A process for the introduction of a flexible, vaso-occlusive device comprising a radiopaque coil or braid having an outside diameter less than about 0.010 inches into a human body comprising the steps of advancing a catheter having a lumen and a distal end into the human vasculature until it reaches a selected site within that vasculature, introducing the flexible, vaso-occlusive device into the catheter lumen, and hydraulically impelling the device though the lumen and out the distal end.
Claim 2
Dependent Claim
78 words
A process for the introduction of a flexible, vaso-occlusive device comprising a radiopaque coil or braid having an outside diameter less than about 0.010 inches into a human body comprising the steps of advancing a catheter having a lumen and a distal end into the human vasculature until it reaches a selected site within that vasculature, introducing the flexible, vaso-occlusive device into the catheter lumen, and hydraulically impelling the device though the lumen and out the distal end.
Claim 3
Dependent Claim
31 words
The process of claim 1 additionally comprising the step of introducing one or more additional vaso-occlusive coils or braids having a larger diameter than 0.010 inches to said selected vascular site.
Claim 4
Dependent Claim
31 words
The process of claim 1 additionally comprising the step of introducing tissue adhesives or particulate embolization materials comprising microparticles of polyvinyl alcohol foam or chemotherapeutic agents to said selected vascular site.
Claim 5
Dependent Claim
13 words
The process of claim 3 where the tissue adhesive is a cyanoacrylate resin.
Claim 6
Dependent Claim
11 words
The process of claim 4 where the cyanoacrylate resin is n-butylcyanoacrylate.
Claim 7
Dependent Claim
20 words
The process of claim 1 where the device comprises a coil, a braided tube, or a combination braid and coil.
Claim 8
Dependent Claim
13 words
The process of claim 6 wherein the device is a regularly wound coil.
Claim 9
Dependent Claim
16 words
The process of claim 6 wherein the device is a coil which is not regularly wound.
Claim 10
Dependent Claim
18 words
The process of claim 6 wherein the device outside diameter is between 0.004 inches and about 0.0095 inches.
Claim 11
Dependent Claim
16 words
The process of claim 6 wherein the device outside diameter is between 0.004 and 0.0075 inches.
Claim 12
Dependent Claim
19 words
The process of claim 6 wherein the device comprises wire having a diameter of between 0.00075 and 0.00225 inches.
Claim 13
Dependent Claim
19 words
The process of claim 11 wherein the device comprises wire having a diameter of between 0.001 and 0.002 inches.
Claim 14
Dependent Claim
12 words
The process of claim 6 wherein the device comprises a braided tube.
Claim 15
Dependent Claim
28 words
The process of claim 6 wherein the device comprises ribbon having a major axis between 0.001 and 0.002 inches and a minor axis is 0.0005 and 0.001 inches.
Claim 16
Dependent Claim
25 words
The process of claim 6 wherein the device bends more than about 20° when one cm of the device is held in a horizontal position.
Claim 17
Dependent Claim
25 words
The process of claim 15 wherein the device bends more than about 35° when one cm of the device is held in a horizontal position.
Claim 18
Dependent Claim
18 words
The process of claim 6 wherein the length of the device is between 2 mm and 120 cm.
Claim 19
Dependent Claim
18 words
The process of claim 6 wherein the length of the device is between 30 cm and 120 cm.
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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) | 2001-10-26 | 2002-04-27 | 2002-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-10-26 | 2006-04-27 | 2006-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-10-26 | 2010-04-27 | 2010-10-27 | $7700.00 | Window Closed / Lapsed |