US6042598A
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Method of protecting a patient from embolization during cardiac surgery
Assignee: Edwards Lifesciences Corp
•
Filing: 1999-04-05
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Granted: 2000-03-28
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Expires: 2019-04-05
Abstract
Abstract An apparatus and method for treating stenosed blood vessels is provided, more particularly a percutaneous catheter, including a filter for capturing loose embolic material, used to deliver a stent, preferably within the ascending aorta, the aortic arch, or the carotid arteries. The catheter includes an expandable stent deployed on an inflatable balloon, or alternatively a self-expanding stent. A filter assembly is provided either directly on the catheter, or in a separate sheath or on a guidewire. The filter assembly comprises an expansion frame, having filter mesh attached to it, disposed on a guidewire inserted through the catheter or sheath, or alternatively attached directly on a distal region of the catheter. The expansion frame comprises a structure which is activated from a contracted condition into an enlarged condition in a blood vessel, thereby traversing the vessel with the filter mesh. The expansion frame includes biased struts, a mechanically operated frame, and/or a fluid-operated frame. The catheter is percutaneously introduced into a blood vessel and directed to a target region. The stent is localized across the region, the filter assembly is opened, and the stent is deployed, substantially permanently engaging the walls of the blood vessel, thereby opening the stenosed region and/or containing aortic plaque.
Inventors
- 👤 Ross S. Tsugita
- 👤 Tracy D. Maahs
- 👤 Yue-Teh Jang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:43
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/01; A61F2/013; A61F2/0105; A61F2/0108; A61B; A61B17/00; A61B17/22; A61B17/221; A61B2017/2212; A61B17/32; A61B17/3205; A61B17/3207; A61B2017/320716; A61F2/011; A61F2/014; A61F2/82; A61F2/95; A61F2002/018; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0028; A61F2230/005; A61F2230/0063; A61F2230/0067; A61F2230/0071; A61F2230/0073; A61F2230/0076; A61F2230/008; A61F2230/0093; A61F2250/00; A61F2250/0003
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
128 words
A method of protecting a patient from embolization during cardiac surgery, comprising the steps of: providing a blood filter device having a filter disposed on a distal region of an elongate member, the filter adapted to operate at a site within the aorta of the patient and to be removed thereafter; introducing the blood filter device into the femoral artery and advancing the distal region of the elongate member to the site within the aorta upstream of the innominate artery; deploying the filter at the site within the aorta; manipulating the aorta in a region upstream of the site within the aorta; and removing the blood filter device from the aorta, wherein embolic material is generated and filtered before the blood filter device is removed from the aorta.
Claim 2
Independent Claim
128 words
A method of protecting a patient from embolization during cardiac surgery, comprising the steps of: providing a blood filter device having a filter disposed on a distal region of an elongate member, the filter adapted to operate at a site within the aorta of the patient and to be removed thereafter; introducing the blood filter device into the femoral artery and advancing the distal region of the elongate member to the site within the aorta upstream of the innominate artery; deploying the filter at the site within the aorta; manipulating the aorta in a region upstream of the site within the aorta; and removing the blood filter device from the aorta, wherein embolic material is generated and filtered before the blood filter device is removed from the aorta.
Claim 3
Dependent Claim
18 words
The method of claim 1, further comprising the steps of introducing a blood bypass cannula into the aorta.
Claim 4
Dependent Claim
19 words
The method of claim 2, wherein the cannula is introduced downstream of the site where the filter is deployed.
Claim 5
Dependent Claim
16 words
The method of claim 1, wherein the step of manipulating the aorta comprises blocking the aorta.
Claim 6
Dependent Claim
16 words
The method of claim 4, wherein the step of blocking the aorta includes cross-clamping the aorta.
Claim 7
Dependent Claim
26 words
The method of claim 1, wherein the step of manipulating the aorta comprises unblocking the aorta while the blood filter device is deployed within the aorta.
Claim 8
Dependent Claim
12 words
The method of claim 1, wherein said elongate member is a catheter.
Claim 9
Dependent Claim
12 words
The method of claim 1, wherein said elongate member is a guidewire.
Claim 10
Independent Claim
129 words
A method of protecting a patient from embolization during cardiac surgery, comprising the steps of: providing a blood filter device having a filter disposed on a distal region of an elongate member, the filter adapted to operate at a site within the aorta of the patient and to be removed thereafter; introducing the blood filter device into the left subclavian artery and advancing the distal region of the elongate member to the site within the aorta upstream of the innominate artery; deploying the filter at the site within the aorta; manipulating the aorta in a region upstream of the site within the aorta; and removing the blood filter device from the aorta, wherein embolic material is generated and filtered before the blood filter device is removed from the aorta.
Claim 11
Independent Claim
129 words
A method of protecting a patient from embolization during cardiac surgery, comprising the steps of: providing a blood filter device having a filter disposed on a distal region of an elongate member, the filter adapted to operate at a site within the aorta of the patient and to be removed thereafter; introducing the blood filter device into the left subclavian artery and advancing the distal region of the elongate member to the site within the aorta upstream of the innominate artery; deploying the filter at the site within the aorta; manipulating the aorta in a region upstream of the site within the aorta; and removing the blood filter device from the aorta, wherein embolic material is generated and filtered before the blood filter device is removed from the aorta.
Claim 12
Dependent Claim
18 words
The method of claim 9, further comprising the steps of introducing a blood bypass cannula into the aorta.
Claim 13
Dependent Claim
19 words
The method of claim 10, wherein the cannula is introduced downstream of the site where the filter is deployed.
Claim 14
Dependent Claim
16 words
The method of claim 9, wherein the step of manipulating the aorta comprises blocking the aorta.
Claim 15
Dependent Claim
16 words
The method of claim 12, wherein the step of blocking the aorta includes cross-clamping the aorta.
Claim 16
Dependent Claim
26 words
The method of claim 9, wherein the step of manipulating the aorta comprises unblocking the aorta while the blood filter device is deployed within the aorta.
Claim 17
Dependent Claim
12 words
The method of claim 9, wherein said elongate member is a catheter.
Claim 18
Dependent Claim
12 words
The method of claim 9, wherein said elongate member is a guidewire.
Claim 19
Independent Claim
129 words
A method of protecting a patient from embolization during cardiac surgery, comprising the steps of: providing a blood filter device having a filter disposed on a distal region of an elongate member, the filter adapted to operate at a site within the aorta of the patient and to be removed thereafter; introducing the blood filter device into the right subclavian artery and advancing the distal region of the elongate member to the site within the aorta upstream of the innominate artery; deploying the filter at the site within the aorta; manipulating the aorta in a region upstream of the site within the aorta; and removing the blood filter device from the aorta, wherein embolic material is generated and filtered before the blood filter device is removed from the aorta.
Claim 20
Independent Claim
129 words
A method of protecting a patient from embolization during cardiac surgery, comprising the steps of: providing a blood filter device having a filter disposed on a distal region of an elongate member, the filter adapted to operate at a site within the aorta of the patient and to be removed thereafter; introducing the blood filter device into the right subclavian artery and advancing the distal region of the elongate member to the site within the aorta upstream of the innominate artery; deploying the filter at the site within the aorta; manipulating the aorta in a region upstream of the site within the aorta; and removing the blood filter device from the aorta, wherein embolic material is generated and filtered before the blood filter device is removed from the aorta.
Claim 21
Dependent Claim
18 words
The method of claim 17, further comprising the steps of introducing a blood bypass cannula into the aorta.
Claim 22
Dependent Claim
19 words
The method of claim 18, wherein the cannula is introduced downstream of the site where the filter is deployed.
Claim 23
Dependent Claim
16 words
The method of claim 17, wherein the step of manipulating the aorta comprises blocking the aorta.
Claim 24
Dependent Claim
16 words
The method of claim 20, wherein the step of blocking the aorta includes cross-clamping the aorta.
Claim 25
Dependent Claim
26 words
The method of claim 17, wherein the step of manipulating the aorta includes unblocking the aorta while the blood filter device is deployed within the aorta.
Claim 26
Dependent Claim
12 words
The method of claim 17, wherein said elongate member is a catheter.
Claim 27
Dependent Claim
12 words
The method of claim 17, wherein said elongate member is a guidewire.
Claim 28
Dependent Claim
22 words
The catheter of claim 17, wherein the expansion frame is activated by inflating an annular balloon at the base of the struts.
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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) | 2003-03-28 | 2003-09-27 | 2004-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-03-28 | 2007-09-27 | 2008-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-03-28 | 2011-09-27 | 2012-03-28 | $7700.00 | Window Closed / Lapsed |