US6187025B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vascular filter
Assignee: Bank of America NA
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Filing: 1999-09-09
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Granted: 2001-02-13
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Expires: 2019-09-09
Abstract
Abstract Various vascular filters are provided. In one aspect, a vascular filter is provided that includes a tubular sleeve and a core positioned in the sleeve that is axially deployable therefrom. A shape-memory wire is spiraled around the core and has a first portion unfurled from the core to define a hoop. The hoop is expandable from a retracted shape to a expanded shape when the core is deployed from the sleeve. A filter is provided that has a first end coupled to the core and a rim coupled to the hoop. The integration of the hoop with the shape-memory wire provides for excellent tip flexibility with enhanced resistance to structural failure.
Inventors
- 👤 James E. Machek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:37
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/01; A61F2/0105; A61F2/013; A61B; A61B17/00; A61B2017/00831; A61B2017/00867; A61F2002/018; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0063; A61F2230/0067
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
93 words
A vascular filter, comprising: a tubular sleeve; a core positioned in the sleeve and being axially deployable therefrom; a shape-memory wire spiraled around the core and having a first portion unfurled from the core to define a hoop, the hoop being expandable from a retracted shape to an expanded shape when the core is deployed from the sleeve and compressible from the expanded shape to the retracted shape when the core is returned the sleeve; and a filter having a first end coupled to the core and a rim coupled to the hoop.
Claim 2
Dependent Claim
93 words
A vascular filter, comprising: a tubular sleeve; a core positioned in the sleeve and being axially deployable therefrom; a shape-memory wire spiraled around the core and having a first portion unfurled from the core to define a hoop, the hoop being expandable from a retracted shape to an expanded shape when the core is deployed from the sleeve and compressible from the expanded shape to the retracted shape when the core is returned the sleeve; and a filter having a first end coupled to the core and a rim coupled to the hoop.
Claim 3
Dependent Claim
21 words
The vascular filter of claim 1 , wherein the hoop is substantially concentric with the core when in the expanded shape.
Claim 4
Dependent Claim
21 words
The vascular filter of claim 1 , wherein the hoop is substantially eccentric with the core when in the expanded shape.
Claim 5
Dependent Claim
13 words
The vascular filter of claim 1 , wherein the shape-memory wire is superelastic.
Claim 6
Dependent Claim
20 words
The vascular filter of claim 1 , comprising a radiographic marker coupled to the core distal to the shape-memory wire.
Claim 7
Dependent Claim
23 words
The vascular filter of claim 5 , wherein the radiographic marker comprises a wire spiraled around the core distal to the shape-memory wire.
Claim 8
Dependent Claim
40 words
The vascular filter of claim 1 , wherein the core has an external channel, the first end of the filter being retained in the channel by a wire threaded into the external channel over the first end of the filter.
Claim 9
Dependent Claim
113 words
A vascular filter, comprising: a core; a tubular sleeve positioned around the core and being axially moveable thereon from a first position to a second position; a shape-memory wire spiraled around the core and having a first portion unfurled from the core to define a hoop, the hoop being expandable from a retracted shape to an expanded shape when the sleeve is moved from the first position to the second position and compressible from the expanded shape to the retracted shape when the sleeve is moved from the second position back to the first prosition; and a filter having a first end coupled to the core and a rim coupled to the hoop.
Claim 10
Dependent Claim
113 words
A vascular filter, comprising: a core; a tubular sleeve positioned around the core and being axially moveable thereon from a first position to a second position; a shape-memory wire spiraled around the core and having a first portion unfurled from the core to define a hoop, the hoop being expandable from a retracted shape to an expanded shape when the sleeve is moved from the first position to the second position and compressible from the expanded shape to the retracted shape when the sleeve is moved from the second position back to the first prosition; and a filter having a first end coupled to the core and a rim coupled to the hoop.
Claim 11
Dependent Claim
21 words
The vascular filter of claim 8 , wherein the hoop is substantially concentric with the core when in the expanded shape.
Claim 12
Dependent Claim
21 words
The vascular filter of claim 8 , wherein the hoop is substantially eccentric with the core when in the expanded shape.
Claim 13
Dependent Claim
13 words
The vascular filter of claim 8 , wherein the shape-memory wire is superelastic.
Claim 14
Dependent Claim
20 words
The vascular filter of claim 8 , comprising a radiographic marker coupled to the core distal to the shape-memory wire.
Claim 15
Dependent Claim
23 words
The vascular filter of claim 12 , wherein the radiographic marker comprises a wire spiraled around the core distal to the shape-memory wire.
Claim 16
Dependent Claim
40 words
The vascular filter of claim 8 , wherein the core has an external channel, the first end of the filter being retained in the channel by a wire threaded into the external channel over the first end of the filter.
Claim 17
Dependent Claim
116 words
A vascular filter, comprising: a tubular sleeve; a core positioned in the sleeve and being moveable axially relative the sleeve; a tubular member coupled to the sleeve and having a plurality of openings; a shape-memory wire having a first end and a second end coupled to the core and an intermediate portion defining a hoop, the first and second ends being projectable from the openings; and a filter having a first end coupled to the sleeve and a rim coupled to the hoop, the hoop being expandable when the core is advanced axially and the first and second ends of the shape-memory wire are projected from the openings and contracted when the core is withdrawn axially.
Claim 18
Dependent Claim
116 words
A vascular filter, comprising: a tubular sleeve; a core positioned in the sleeve and being moveable axially relative the sleeve; a tubular member coupled to the sleeve and having a plurality of openings; a shape-memory wire having a first end and a second end coupled to the core and an intermediate portion defining a hoop, the first and second ends being projectable from the openings; and a filter having a first end coupled to the sleeve and a rim coupled to the hoop, the hoop being expandable when the core is advanced axially and the first and second ends of the shape-memory wire are projected from the openings and contracted when the core is withdrawn axially.
Claim 19
Dependent Claim
12 words
The vascular filter of claim 15 , wherein the openings comprise slots.
Claim 20
Dependent Claim
23 words
The vascular filter of claim 16 , wherein the slots are positioned around the circumference of the tubular member at staggered axial distances.
Claim 21
Dependent Claim
28 words
The vascular filter of claim 15 , comprising an axially disposed flexible wire coupled distally to the tubular member and an end cap coupled to the flexible wire.
Claim 22
Dependent Claim
15 words
The vascular filter of claim 15 , wherein the sleeve comprises a coiled flat wire.
Claim 23
Dependent Claim
21 words
The vascular filter of claim 15 , wherein the core comprises a braided shape-memory wire cable having a plurality of filars.
Claim 24
Dependent Claim
21 words
The vascular filter of claim 20 , wherein the shape-memory wire comprises a portion of one of the plurality of filars.
Claim 25
Dependent Claim
39 words
The vascular filter of claim 15 , wherein the sleeve comprises a first coiled flat wire coupled to the tubular member and a second coiled flat wire coupled to the tubular member distal to the first coiled flat wire.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-02-13 | 2004-08-14 | 2005-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-02-13 | 2008-08-14 | 2009-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-02-13 | 2012-08-14 | 2013-02-13 | $7700.00 | Window Closed / Lapsed |