US6682543B2
Expired / Lapsed
US
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Methods for aortic artherectomy
Assignee: Edwards Lifesciences Corp
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Filing: 2001-10-24
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Granted: 2004-01-27
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Expires: 2021-10-24
Abstract
Abstract A method for removing plaque from the aorta is disclosed. A filter is introduced into a region of interest within the patient's aorta. The filter is deployed downstream of a mobile aortic plaque within the aorta. An atherectomy assembly is operated to excise the plaque from the aorta. Emboli are captured by the filter. The filter and plaque are removed from the region of interest.
Inventors
- 👤 Denise R. Barbut
- 👤 Jonathan D. Root
- 👤 Giovanni Pastrone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:02
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320783; A61B17/22; A61B17/22031; A61B17/221; A61F; A61F2/00; A61F2/01; A61F2/0105; A61F2/013; A61B10/00; A61B10/02; A61B10/06; A61B17/32056; A61B17/32075; A61B2010/0225; A61B17/00234; A61B2017/00287; A61B2017/22051; A61B2017/22065; A61B2017/22068; A61B2017/22069; A61B2017/2215; A61B17/30; A61B2017/306; A61B17/320016; A61B2017/32004; A61B2017/320064; A61B8/00; A61B8/08; A61B8/0808; A61F2002/018; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0063; A61F2230/0067; A61F2230/0071; A61F2230/0073; A61F2230/008; A61M; A61M2210/00; A61M2210/12; A61M2210/127; A61M25/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
86 words
A method for removing plaque from the aorta of a patient during open surgery, comprising the steps of: introducing a distal region of a filter into a region of interest within the patient's aorta; deploying the filter downstream of the plaque within the aorta; contacting an atherectomy assembly with the plaque within the aorta; excising the plaque from the aorta by operating the atherectomy assembly, wherein emboli are captured by the filter; and removing the filter and the plaque entrapped therein from the region of interest.
Claim 2
Independent Claim
86 words
A method for removing plaque from the aorta of a patient during open surgery, comprising the steps of: introducing a distal region of a filter into a region of interest within the patient's aorta; deploying the filter downstream of the plaque within the aorta; contacting an atherectomy assembly with the plaque within the aorta; excising the plaque from the aorta by operating the atherectomy assembly, wherein emboli are captured by the filter; and removing the filter and the plaque entrapped therein from the region of interest.
Claim 3
Dependent Claim
61 words
The method of claim 1 , wherein the filter comprises an arterial catheter system comprising a flexible elongate member having an outer surface, a distal region adapted to enter an aorta, a proximal region, a filter mesh, and an atherectomy assembly disposed within the distal region of the elongate member, the atherectomy assembly comprising a plaque cutter and a trapping element.
Claim 4
Dependent Claim
23 words
The method of claim 2 , wherein the plaque is trapped and held by the atherectomy assembly by use of the trapping element.
Claim 5
Dependent Claim
19 words
The method of claim 2 , wherein the distal region of the filter is introduced through the femoral artery.
Claim 6
Dependent Claim
126 words
The method of claim 2 , wherein the catheter further comprises expansion frame disposed about the distal region of the flexible elongate member which is expandable between a contracted condition and an enlarged condition, and a mesh having a first edge attached to the expansion frame and a second edge disposed circumferentially about and closely associated with the outer surface of the flexible elongate member, and wherein the method further comprises the steps of: expanding the expansion frame until it achieves contact with the lumen of the aorta so that embolic material dislodged during the cutting procedure is captured by the mesh; and contracting the expansion frame to the contracted condition before removing the arterial catheter system from the region of interest and the femoral artery.
Claim 7
Dependent Claim
30 words
The method of claim 1 , wherein the filtration system is disposed within the distal region of the flexible elongate member and proximal to and downstream of the atherectomy assembly.
Claim 8
Dependent Claim
14 words
The method of claim 5 , wherein the expansion frame comprises an umbrella frame.
Claim 9
Dependent Claim
39 words
The method of claim 1 , wherein the step of contacting the atherectomy assembly with the plaque includes the step of deploying one or more positioning fingers to bias the flexible elongate member toward or away from a plaque.
Claim 10
Dependent Claim
29 words
The method of claim 1 , wherein the step of excising plaque from the aorta further includes the step of using transcranial doppler ultrasound for cerebral monitoring of emboli.
Claim 11
Dependent Claim
33 words
The method of claim 1 , wherein the step of contacting the atherectomy assembly with the plaque includes the step of operating a steering mechanism to maneuver the atherectomy assembly toward a plaque.
Claim 12
Dependent Claim
37 words
The method of claim 1 , wherein the step of excising plaque further includes the step of guiding excised plaque to a cavity in the elongate member, said cavity being adapted to receive and store plaque material.
Claim 13
Dependent Claim
17 words
The method of claim 11 , further comprising the step of grinding or abrading excised plaque material.
Claim 14
Dependent Claim
16 words
The method of claim 11 , further comprising the step of aspirating the excised plaque material.
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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) | 2007-01-26 | 2007-07-28 | 2008-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-01-26 | 2011-07-28 | 2012-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-01-26 | 2015-07-28 | 2016-01-27 | $7700.00 | Window Closed / Lapsed |