US6258120B1
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US
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Implantable cerebral protection device and methods of use
Assignee: Edwards Lifesciences Corp
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Filing: 1997-12-23
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Granted: 2001-07-10
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Expires: 2017-12-23
Abstract
Abstract The present invention is directed to devices and methods for diverting emboli away from the carotid arteries in the aorta. The devices are aortic diverters that generally comprise a hollow tube with a substantially cylindrical or conical wall, which is impermeable to emboli and which has open ends that allow blood to enter one end, flow through the tube and exit the other end. Additionally, snowshoe aortic diverters, which are planar rather than cylindrical are also disclosed. The methods of the invention generally include the steps of providing an aortic diverter carried by an intravascular catheter, introducing the intravascular catheter into the vascular system, advancing the intravascular catheter into the aortic arch to the region of the carotid arteries, and deploying the aortic diverter.
Inventors
- 👤 John McKenzie
- 👤 Sachiko Hattori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:06
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12099; A61B17/12109; A61B17/12131; A61B17/12136; A61F2/01; A61F2/011; A61B17/00234; A61B2017/00238; A61B2017/00243; A61F2/24; A61F2/82; A61F2/86; A61F2/90; A61F2002/016; A61F2002/018; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0008; A61F2230/0017; A61F2230/0019; A61F2230/0063; A61F2230/0065; A61F2230/0069; A61F2230/0073; A61F2230/008; Y; Y10; Y10S; Y10S623/00; Y10S623/902
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
110 words
A method for protecting a patient against cerebral embolization, said method comprising the steps of: providing an aortic diverter comprising an elongate tube having a wall impermeable to emboli, the tube having a proximal end terminating in a substantially circular edge adapted to fill the lumen of the aorta, and a distal end, wherein the proximal and distal ends are substantially open allowing blood to enter the proximal end, flow through the tube, and exit the distal end; positioning the aortic diverter within the aortic arch; and securing the aortic diverter to the lumen of the aorta, the proximal end of the aortic diverter extending downstream of the brachiocephalic trunk.
Claim 2
Independent Claim
110 words
A method for protecting a patient against cerebral embolization, said method comprising the steps of: providing an aortic diverter comprising an elongate tube having a wall impermeable to emboli, the tube having a proximal end terminating in a substantially circular edge adapted to fill the lumen of the aorta, and a distal end, wherein the proximal and distal ends are substantially open allowing blood to enter the proximal end, flow through the tube, and exit the distal end; positioning the aortic diverter within the aortic arch; and securing the aortic diverter to the lumen of the aorta, the proximal end of the aortic diverter extending downstream of the brachiocephalic trunk.
Claim 3
Dependent Claim
28 words
The method of claim 1 wherein the aortic diverter is secured to the lumen of the aorta by suturing the aortic diverter to the lumen of the aorta.
Claim 4
Dependent Claim
20 words
The method of claim 1 wherein the aortic diverter is secured to the lumen of the aorta with a hook.
Claim 5
Dependent Claim
25 words
The method of claim 1 wherein the aortic diverter is secured to the lumen of the aorta by frictionally engaging the lumen of the aorta.
Claim 6
Dependent Claim
57 words
The method of claim 1 wherein the aortic diverter comprises a sleeve secured to the proximal end of the elongate tube, the sleeve being adapted to frictionally engage the lumen of the aorta, and wherein the aortic diverter is secured to the lumen of the aorta by frictionally engaging the sleeve to the lumen of the aorta.
Claim 7
Dependent Claim
25 words
The method of claim 1 wherein the sleeve is frictionally engaged by radially expanding the sleeve into frictional engagement to the lumen of the aorta.
Claim 8
Dependent Claim
131 words
An aortic diverter insertable into an aorta for diverting emboli away from the carotid arteries, comprising: a hollow tube comprising a substantially cylindrical or conical wall having a plurality of openings permeable to blood and impermeable to emboli, wherein, when the hollow tube is deployed, an area defined by said plurality of openings is smaller than a surface area of the remainder of the wall, the hollow tube having a proximal end terminating in a substantially circular edge adapted to fill the lumen of an aorta, and a distal end, wherein the proximal and distal ends are substantially open allowing blood to enter the proximal end, flow through the hollow tube, and exit the distal end; and an anchoring mechanism for securing the hollow tube to the lumen of the aorta.
Claim 9
Dependent Claim
131 words
An aortic diverter insertable into an aorta for diverting emboli away from the carotid arteries, comprising: a hollow tube comprising a substantially cylindrical or conical wall having a plurality of openings permeable to blood and impermeable to emboli, wherein, when the hollow tube is deployed, an area defined by said plurality of openings is smaller than a surface area of the remainder of the wall, the hollow tube having a proximal end terminating in a substantially circular edge adapted to fill the lumen of an aorta, and a distal end, wherein the proximal and distal ends are substantially open allowing blood to enter the proximal end, flow through the hollow tube, and exit the distal end; and an anchoring mechanism for securing the hollow tube to the lumen of the aorta.
Claim 10
Dependent Claim
21 words
The aortic diverter of claim 7 wherein the plurality of openings comprises every opening on the wall of the hollow tube.
Claim 11
Dependent Claim
32 words
The aortic diverter of claim 8 wherein each of said plurality of openings is defined by an area which captures emboli 2.5 mm in diameter or larger and is permeable to blood.
Claim 12
Dependent Claim
33 words
The aortic diverter of claim 8 , wherein each of said plurality of openings is defined by an area which captures emboli 0.02 mm in diameter or larger and is permeable to blood.
Claim 13
Dependent Claim
35 words
The aortic diverter of claim 8 , wherein the anchoring mechanism comprises a sleeve secured to the proximal end of the hollow tube, the sleeve being adapted to frictionally engage the lumen of the aorta.
Claim 14
Dependent Claim
16 words
The aortic diverter of claim 8 , wherein the anchoring mechanism comprises at least one suture.
Claim 15
Dependent Claim
16 words
The aortic diverter of claim 8 , wherein the anchoring mechanism comprises at least one hook.
Claim 16
Dependent Claim
37 words
The aortic diverter of claim 8 , wherein the anchoring mechanism comprises the proximal end of the hollow tube, wherein the proximal end of the hollow tube is adapted to frictionally engage the lumen of the aorta.
Claim 17
Dependent Claim
36 words
The aortic diverter of claim 8 , wherein the wall is expandable between a compressed state for percutaneous delivery of the diverter and a radially expanded state for frictional engagement with the lumen of the aorta.
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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) | 2004-07-09 | 2005-01-08 | 2005-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-07-09 | 2009-01-08 | 2009-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-07-09 | 2013-01-08 | 2013-07-10 | $7700.00 | Window Closed / Lapsed |