Patent US6726702B2 successfully refreshed from Google Patents.
US6726702B2
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Deployable recoverable vascular filter and methods for use
Assignee: Boston Scientific Scimed Inc
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Filing: 2001-12-10
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Granted: 2004-04-27
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Expires: 2021-12-10
Abstract
Abstract A vascular filter is provided that includes a tubular member having proximal and distal ends, and a guidewire lumen. An expandable frame is attached to the tubular member capable of assuming collapsed and enlarged conditions, and filter material is attached to the frame, the filter material having an open proximal end when the frame assumes its enlarged condition. An apparatus for recovering a vascular filter from a blood vessel is also provided that includes a sheath and a retrieval member deployable from the sheath. The retrieval member includes a connector on its distal end for securing the tubular member, such as an expandable member within a recess for receiving the tubular member. The vascular filter may be constrained in its collapsed condition in a sheath, and the tubular member advanced over a guidewire to a location downstream of a treatment site. The vascular filter is deployed and expanded to its enlarged condition across the blood vessel, the guidewire remaining in place. A procedure is performed at the treatment site, the vascular filter capturing released emboli. The retrieval device is advanced over the guidewire, the vascular filter is secured to the retrieval member, and the vascular filter and retrieval device are withdrawn from the blood vessel.
Inventors
- 👤 Farhad Khosravi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:52
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/01; A61F2/013; A61F2/011; A61F2/82; A61F2/86; A61F2/95; A61F2002/018; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0063; A61F2230/0067; A61F2230/0073; A61F2230/008
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
91 words
A vascular filter, comprising: an elongate member having a proximal end and a distal end, and including a lumen for receiving a guidewire therethrough; an expandable frame attached to the elongate member, the expandable frame being capable of assuming a collapsed condition and an enlarged condition; a filter material attached to the expandable frame, the filter material having an open proximal end when the expandable frame assumes its enlarged condition; and a connector on the proximal end of the elongate member for detachably securing the vascular filter to a delivery device.
Claim 2
Dependent Claim
91 words
A vascular filter, comprising: an elongate member having a proximal end and a distal end, and including a lumen for receiving a guidewire therethrough; an expandable frame attached to the elongate member, the expandable frame being capable of assuming a collapsed condition and an enlarged condition; a filter material attached to the expandable frame, the filter material having an open proximal end when the expandable frame assumes its enlarged condition; and a connector on the proximal end of the elongate member for detachably securing the vascular filter to a delivery device.
Claim 3
Dependent Claim
18 words
The vascular filter of claim 1 , wherein the expandable frame is biased to assume its enlarged condition.
Claim 4
Dependent Claim
35 words
The vascular filter of claim 1 , wherein the expandable frame comprises a plurality of struts, each strut having first and second ends, the first end of each strut being attached to the elongate member.
Claim 5
Dependent Claim
27 words
The vascular filter of claim 3 , further comprising a collar slidable on the elongate member, the second end of each strut being attached to the collar.
Claim 6
Dependent Claim
24 words
The vascular filter of claim 3 , wherein each of the struts includes an intermediate region biased to bow outward from the elongate member.
Claim 7
Dependent Claim
20 words
The vascular filter of claim 5 wherein the proximal end of the filter material is attached to the intermediate region.
Claim 8
Independent Claim
116 words
An apparatus for filtering a fluid flowing in a blood vessel, comprising: a vascular filter including an expandable frame capable of assuming collapsed and enlarged conditions, and a filter material attached to the expandable frame; a tubular sheath having a proximal end, a distal end for insertion into a blood vessel, and a lumen having an opening at the distal end, the lumen having a size for slidably receiving the vascular filter therein when the expandable frame is in its collapsed condition; and an elongate retrieval member having a distal end deployable from the distal end of the tubular sheath, the retrieval member, having a connector on its distal end for securing the vascular filter thereto.
Claim 9
Independent Claim
116 words
An apparatus for filtering a fluid flowing in a blood vessel, comprising: a vascular filter including an expandable frame capable of assuming collapsed and enlarged conditions, and a filter material attached to the expandable frame; a tubular sheath having a proximal end, a distal end for insertion into a blood vessel, and a lumen having an opening at the distal end, the lumen having a size for slidably receiving the vascular filter therein when the expandable frame is in its collapsed condition; and an elongate retrieval member having a distal end deployable from the distal end of the tubular sheath, the retrieval member, having a connector on its distal end for securing the vascular filter thereto.
Claim 10
Dependent Claim
48 words
The apparatus of claim 7 , further comprising an elongate bumper member insertable into the lumen of the tubular sheath, the bumper member including a distal end configured for advancing the vascular filter received in the lumen through the opening beyond the distal end of the tubular sheath.
Claim 11
Dependent Claim
29 words
The apparatus of claim 7 , wherein the lumen comprises an enlarged distal lumen region having a length at least as long as a length of the vascular filter.
Claim 12
Dependent Claim
30 words
The apparatus of claim 7 , wherein the retrieval member comprises a tubular body having a lumen therein, the tubular body being insertable into the lumen of the tubular sheath.
Claim 13
Dependent Claim
34 words
The apparatus of claim 10 , wherein the lumen of the tubular body comprises an enlarged recess adjacent its distal end having a size for receiving a proximal end of the vascular filter therein.
Claim 14
Dependent Claim
37 words
The apparatus of claim 11 , wherein the connector comprises an expandable member in the enlarged recess, the expandable member being expandable into the enlarged recess for engaging the proximal end of the tubular member received therein.
Claim 15
Dependent Claim
31 words
The apparatus of claim 11 , wherein the connector comprises a mechanically actuated collar, the collar being actuable to reduce its diameter, thereby engaging the proximal end of the elongate member.
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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) | 2007-04-27 | 2007-10-27 | 2008-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-04-27 | 2011-10-27 | 2012-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-04-27 | 2015-10-27 | 2016-04-27 | $7700.00 | Window Closed / Lapsed |