US6346116B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distal protection device
Assignee: Medtronic Vascular Inc
•
Filing: 1999-08-03
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Granted: 2002-02-12
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Expires: 2019-08-03
Abstract
Abstract The present invention is a distal protection device for use with a delivery member. A filter assembly is located on the distal end of the delivery member. The filter is deployed distally of the region to be treated to capture emboli released during and immediately after the procedure. The filter is then retracted to retain any captured emboli and then removed from the patient.
Inventors
- 👤 Dennis L. Brooks
- 👤 Robert D. Lashinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:57
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/01; A61F2/0108; A61F2002/018; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0063; A61F2230/0067; A61F2230/0073; A61F2230/008
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
103 words
A distal protection device for capturing emboli during an endovascular procedure at a treatment area, said device comprising: a delivery member having a proximal end and a distal end; a self-expanding filter assembly adjacent said distal end of said delivery member, said filter assembly having a proximal portion and a distal portion, and having a proximal end longitudinally fixed to said delivery member and a distal end longitudinally fixed to said delivery member; and a sheath being moveable over at least part of the proximal portion of said filter assembly for positioning said filter assembly between a deployed position and a collapsed position.
Claim 2
Dependent Claim
103 words
A distal protection device for capturing emboli during an endovascular procedure at a treatment area, said device comprising: a delivery member having a proximal end and a distal end; a self-expanding filter assembly adjacent said distal end of said delivery member, said filter assembly having a proximal portion and a distal portion, and having a proximal end longitudinally fixed to said delivery member and a distal end longitudinally fixed to said delivery member; and a sheath being moveable over at least part of the proximal portion of said filter assembly for positioning said filter assembly between a deployed position and a collapsed position.
Claim 3
Dependent Claim
31 words
The distal protection device of claim 1 wherein said filter assembly distal portion comprises a filter material and is sized to fill a selected cross-sectional area distal of the treatment area.
Claim 4
Dependent Claim
17 words
The distal protection device of claim 1 wherein said filter assembly proximal portion comprises an expandable frame.
Claim 5
Dependent Claim
15 words
The distal protection device of claim 3 wherein said expandable frame has a braid configuration.
Claim 6
Dependent Claim
19 words
The distal protection device of claim 3 wherein said expandable frame includes a sinusoidal ring at its distal end.
Claim 7
Dependent Claim
15 words
The distal protection device of claim 1 wherein said filter assembly comprises an expandable basket.
Claim 8
Dependent Claim
38 words
The distal protection device of claim 6 wherein said expandable basket comprises a braid structure that transitions from a dense weave at said filter assembly distal portion to a less dense weave at said filter assembly proximal portion.
Claim 9
Dependent Claim
46 words
The distal protection device of claim 6 wherein said basket further includes a proximal portion and a distal portion and a filter material positioned at the distal portion, said filter material being sized sufficiently to expand and cover a cross-sectional area distal of the treatment area.
Claim 10
Dependent Claim
16 words
The distal protection device of claim 1 wherein said sheath is concentric with said delivery member.
Claim 11
Dependent Claim
17 words
The distal protection device of claim 1 wherein said filter assembly is concentric with said delivery member.
Claim 12
Dependent Claim
30 words
The distal protection device of claim 1 wherein said filter assembly comprises an expandable frame forming said proximal portion thereof and an expandable porous filter comprising said distal portion thereof.
Claim 13
Dependent Claim
14 words
The distal protection device of claim 1 wherein said sheath includes an aspiration lumen.
Claim 14
Dependent Claim
14 words
The distal protection device of claim 1 wherein said sheath includes a flushing lumen.
Claim 15
Independent Claim
135 words
A method of using a distal protection device in a vascular treatment region within a patient, said method comprising: providing a delivery member and a moveable sheath covering a self-expanding filter assembly located adjacent a distal end of said delivery member, said delivery member being longitudinally fixed to said filter assembly at a proximal end and a distal end of said filter assembly; positioning said filter assembly distal of said treatment region; retracting said sheath proximally to deploy said filter assembly distal of the treatment region; conducting a procedure at said treatment region; capturing emboli in said filter assembly during said procedure; moving said sheath distally over said filter assembly to at least partially collapse said filter around said captured emboli; and removing said at least partially collapsed filter and captured emboli from said patient.
Claim 16
Independent Claim
135 words
A method of using a distal protection device in a vascular treatment region within a patient, said method comprising: providing a delivery member and a moveable sheath covering a self-expanding filter assembly located adjacent a distal end of said delivery member, said delivery member being longitudinally fixed to said filter assembly at a proximal end and a distal end of said filter assembly; positioning said filter assembly distal of said treatment region; retracting said sheath proximally to deploy said filter assembly distal of the treatment region; conducting a procedure at said treatment region; capturing emboli in said filter assembly during said procedure; moving said sheath distally over said filter assembly to at least partially collapse said filter around said captured emboli; and removing said at least partially collapsed filter and captured emboli from said patient.
Claim 17
Dependent Claim
18 words
A method of claim 14 and further including advancing a second delivery member over said first delivery member.
Claim 18
Dependent Claim
20 words
A method of claim 15 and further including performing a procedure at said treatment region with said second delivery member.
Claim 19
Dependent Claim
35 words
A method of claim 14 wherein said filter assembly includes a filtering material and the step of retracting said sheath to deploy said filter assembly also comprises expanding said filtering material of said filter assembly.
Claim 20
Dependent Claim
20 words
A method of claim 14 and further comprising aspirating captured emboli from said filter assembly prior to collapsing said filter.
Claim 21
Dependent Claim
21 words
A method of claim 14 and further comprising flushing said filter assembly with a lysing agent prior to collapsing said filter.
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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) | 2005-02-11 | 2005-08-13 | 2006-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-02-11 | 2009-08-13 | 2010-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-02-11 | 2013-08-13 | 2014-02-12 | $7700.00 | Window Closed / Lapsed |