Patent US6676683B1 successfully refreshed from Google Patents.
US6676683B1
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Intravascular catheter filter with interlocking petal design and methods of use
Assignee: Edwards Lifesciences Corp
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Filing: 2000-11-17
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Granted: 2004-01-13
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Expires: 2020-11-17
Abstract
Abstract A filter device for temporary placement of a filter in an artery or vein is disclosed. The device includes an expandable filter mounted on a distal end of a catheter. The filter comprises a plurality of circumferentially adjacent porous segments that are arranged generally about the surface of a cone having an open base, and the segments are engaged to one another by means, such as a hook. The filter conforms to the interior of a vessel wall when expanded and contracts to a consistent diameter without bunching when stowed. Methods of using the filter device to entrap and remove embolic material from a vessel during endovascular procedures are also disclosed.
Inventors
- 👤 Bruce Addis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:55
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/01; A61F2/0105; A61F2002/018; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0063; A61F2230/0067; A61F2230/0093
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
62 words
A method of percutaneous filtration, comprising the steps of: providing a catheter having an expandable filter mounted at a distal end, the filter comprising a plurality of circumferentially adjacent porous segments, wherein each porous segment is detachably affixed to an adjacent porous segment; inserting the catheter into a vessel and advancing the catheter to a region of interest; and expanding the filter.
Claim 2
Independent Claim
62 words
A method of percutaneous filtration, comprising the steps of: providing a catheter having an expandable filter mounted at a distal end, the filter comprising a plurality of circumferentially adjacent porous segments, wherein each porous segment is detachably affixed to an adjacent porous segment; inserting the catheter into a vessel and advancing the catheter to a region of interest; and expanding the filter.
Claim 3
Dependent Claim
16 words
The method of claim 1 , wherein the circumferentially adjacent porous segments have interlocking adjacent edges.
Claim 4
Dependent Claim
22 words
The method of claim 2 , wherein the segments are arranged about the surface of a cone having an expandable open base.
Claim 5
Dependent Claim
22 words
The method of claim 3 , wherein the filter opens by expanding the open base until locking of the interlocking adjacent edges.
Claim 6
Dependent Claim
19 words
The method of claim 3 , wherein the base of the cone opens proximal a vertex of the cone.
Claim 7
Dependent Claim
17 words
The method of claim 5 , wherein the catheter extends distally beyond the vertex of the cone.
Claim 8
Dependent Claim
30 words
The method of claim 6 , further comprising a distal capture sheath comprising a tubular member having a lumen shaped to receive the conical filter when the filter is contracted.
Claim 9
Dependent Claim
15 words
The method of claim 7 , wherein the distal capture sheath comprises a porous material.
Claim 10
Dependent Claim
19 words
The method of claim 1 , wherein the base of the cone opens distal a vertex of the cone.
Claim 11
Dependent Claim
28 words
The method of claim 1 , wherein each segment has the shape of a sector bounded by first and second radii and the included arc of a circle.
Claim 12
Dependent Claim
23 words
The method of claim 10 , wherein each of the first and second radii has a hook that engages the circumferentially adjacent segments.
Claim 13
Dependent Claim
23 words
The method of claim 11 , wherein the hook comprises a fold along the edge of each of the first and second sides.
Claim 14
Dependent Claim
14 words
The method of claim 10 , wherein the sector includes an arc of 10-120°.
Claim 15
Dependent Claim
14 words
The method of claim 1 , wherein the catheter further comprises an angioplasty balloon.
Claim 16
Dependent Claim
19 words
The method of claim 1 , further comprising the step of expanding a stent at the region of interest.
Claim 17
Dependent Claim
12 words
The method of claim 1 , wherein the vessel is the aorta.
Claim 18
Dependent Claim
13 words
The method of claim 1 , wherein the vessel is the carotid artery.
Claim 19
Dependent Claim
13 words
The method of claim 1 , wherein the vessel is the coronary artery.
Claim 20
Dependent Claim
14 words
The method of claim 1 , wherein the vessel is the inferior vena cava.
Claim 21
Dependent Claim
13 words
The method of claim 1 , wherein the filter comprises three porous segments.
Claim 22
Dependent Claim
18 words
The method of claim 1 , wherein each porous segment comprises a plastic material having laser cut pores.
Claim 23
Dependent Claim
26 words
The method of claim 1 , wherein each segment further comprises an extension bonded to the center of the arc and extending away from the arc.
Claim 24
Dependent Claim
18 words
The method of claim 1 , wherein the catheter further comprises an atraumatic tip at the distal end.
Claim 25
Dependent Claim
25 words
The method of claim 1 , wherein each segment is shaped generally as an equilateral triangle bounded by first and second sides and a base.
Claim 26
Dependent Claim
23 words
The method of claim 24 , wherein each of the first and second sides has a hook that engages the circumferentially adjacent segments.
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) | 2007-01-12 | 2007-07-14 | 2008-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-01-12 | 2011-07-14 | 2012-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-01-12 | 2015-07-14 | 2016-01-13 | $7700.00 | Window Closed / Lapsed |