US5976162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soft-ended fibered micro vaso-occlusive devices
Assignee: Target Therapeutics Inc
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Filing: 1998-03-13
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Granted: 1999-11-02
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Expires: 2018-03-13
Abstract
Abstract This is a micro-vaso-occlusive device intended generally for occlusion of small arteries located distally in the vasculature. The device is made up of a binder, often radio-opaque, which may be short in length by comparison to the length of the included thrombogenic fibers. The fibers form the other portion of the device. At least one end of the device includes a solid but comparatively soft end typically made of a molten mass of the fibers. The micro device may have multiple binder sections. The fibers may be straight, looped, or tufted.
Inventors
- 👤 Hanh Doan
- 👤 Kim Nguyen
- 👤 Hong Doan
- 👤 Son M. Gia
- 👤 Liem Ho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:49
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0067; A61M25/008; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12131; A61B17/1214; A61B17/1215; A61B17/12159; A61B17/12181; A61B90/00; A61B90/39; A61M2025/0081; A61M25/0068
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
65 words
A vaso-occlusive device comprising: a.) at least one elongated retainer having opposing ends, a retainer axis extending between those ends, an axial length, at least one passageway extending along said axis; b.) at least one fiber passing through at least a portion of said at least one passageway; and c.) at least one soft tip situated at at least one of said retainer opposing ends.
Claim 2
Dependent Claim
65 words
A vaso-occlusive device comprising: a.) at least one elongated retainer having opposing ends, a retainer axis extending between those ends, an axial length, at least one passageway extending along said axis; b.) at least one fiber passing through at least a portion of said at least one passageway; and c.) at least one soft tip situated at at least one of said retainer opposing ends.
Claim 3
Dependent Claim
18 words
The device of claim 1 wherein a soft tip is adherent to each of said retainer opposing ends.
Claim 4
Dependent Claim
24 words
The vaso-occlusive device of claim 2 wherein the soft tip is formed by the application of heat to melt said at least one fiber.
Claim 5
Dependent Claim
20 words
The vaso-occlusive device of claim 2 wherein the soft tip is formed by applying a material onto the tip region.
Claim 6
Dependent Claim
25 words
The vaso-occlusive device of claim 2 wherein the material applied to the tip region is selected from the group consisting of glues, epoxies, and polymers.
Claim 7
Dependent Claim
10 words
The device of claim 1 wherein the retainer is radio-opaque.
Claim 8
Dependent Claim
28 words
The device of claim 1 wherein the retainer comprises a material selected from the group consisting of stainless steel, gold, tungsten, platinum, palladium, rhodium, rhenium, and alloys thereof.
Claim 9
Dependent Claim
12 words
The device of claim 1 wherein the retainer comprises a polymeric material.
Claim 10
Dependent Claim
12 words
The device of claim 8 wherein the polymeric material comprises an epoxy.
Claim 11
Dependent Claim
17 words
The device of claim 1 wherein the retainer has a shape selected from spheroid, ovoid, and cylindrical.
Claim 12
Dependent Claim
11 words
The device of claim 1 wherein the retainer comprises a coil.
Claim 13
Dependent Claim
13 words
The device of claim 1 wherein the device comprises a multiplicity of retainers.
Claim 14
Dependent Claim
21 words
The device of claim 12 wherein a portion of the fibers terminate between at least two of said multiplicity of retainers.
Claim 15
Dependent Claim
26 words
The device of claim 12 wherein the multiplicity of fibers extend outwardly from the retainer axis between said at least two of said multiplicity of retainers.
Claim 16
Dependent Claim
29 words
The device of claim 1 wherein the retainer has an external region and wherein at least a portion of the exterior region is covered with a braided polymeric covering.
Claim 17
Dependent Claim
27 words
The device of claim 1 wherein the retainer has an external region and wherein at least a portion of the exterior region is covered with polymeric fibers.
Claim 18
Dependent Claim
14 words
The vaso-occlusive device of claim 1 wherein the multiplicity of fibers comprises a bundle.
Claim 19
Dependent Claim
22 words
The vaso-occlusive device of claim 1 wherein the ratio of retainer length to the retainer diameter is no more than about two.
Claim 20
Dependent Claim
21 words
The vaso-occlusive device of claim 1 the ratio of retainer length to the retainer diameter is no more than about one.
Claim 21
Dependent Claim
32 words
The vaso-occlusive device of claim 1 wherein the multiplicity of fibers has a length and wherein the ratio of the length of the fibers to the retainer length is at least two.
Claim 22
Dependent Claim
32 words
The vaso-occlusive device of claim 1 wherein the multiplicity of fibers has a length and wherein the ratio of the length of the fibers to the retainer length is at least five.
Claim 23
Dependent Claim
24 words
The vaso-occlusive device of claim 1, wherein the retainer has a diameter and the retainer diameter is between about 0.005 and about 0.015 inches.
Claim 24
Dependent Claim
14 words
The vaso-occlusive device of claim 1, wherein multiple passageways extend along the retainer axis.
Claim 25
Dependent Claim
88 words
A vaso-occlusive device comprising: a.) at least one elongated helical coil having opposing ends, a retainer access between those ends, an axial length, a passageway extending along said access; b.) a clip having a closed end and arms extending from that closed end, wherein the arms are passed through the retainer passageway from one opposing end to the other, c.) at least one fiber retained within the closed end of the clip; and d.) a soft tip situated at at least one of said helical coil opposing ends.
Claim 26
Dependent Claim
88 words
A vaso-occlusive device comprising: a.) at least one elongated helical coil having opposing ends, a retainer access between those ends, an axial length, a passageway extending along said access; b.) a clip having a closed end and arms extending from that closed end, wherein the arms are passed through the retainer passageway from one opposing end to the other, c.) at least one fiber retained within the closed end of the clip; and d.) a soft tip situated at at least one of said helical coil opposing ends.
Claim 27
Dependent Claim
20 words
The device of claim 24 wherein the clip is held in place within the retainer coil by the soft tip.
Claim 28
Dependent Claim
10 words
The device of claim 24 wherein the retainer is radio-opaque.
Claim 29
Dependent Claim
29 words
The device of claim 24 wherein the retainer coil comprises of material selected from the group consisting of stainless steel, gold, tungsten, platinum, palladium, rhodium, rhenium and alloys thereof.
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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) | 2002-11-01 | 2003-05-03 | 2003-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-01 | 2007-05-03 | 2007-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-01 | 2011-05-03 | 2011-11-02 | $7700.00 | Window Closed / Lapsed |