US6235045B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cannula with associated filter and methods of use
Assignee: Edwards Lifesciences Corp
•
Filing: 1999-12-06
•
Granted: 2001-05-22
•
Expires: 2019-12-06
Abstract
Abstract Devices and methods for filtering blood. The devices generally comprise a mesh for filtering blood flowing within a blood vessel, particularly within an artery such as the aorta, a structure adapted to open and close the mesh within the blood vessel, and a means to actuate the structure. The methods generally include the steps of introducing a mesh into a blood vessel to entrap embolic material, and removing the mesh and the entrapped foreign matter from the blood vessel.
Inventors
- 👤 Denise Barbut
- 👤 Tracy D. Maahs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:34
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/01; A61F2/011; A61F2002/018; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0063; A61F2230/0067; A61F2250/00; A61F2250/0003; A61M; A61M2210/00; A61M2210/12; A61M2210/127
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
58 words
A method for surgery, comprising the steps of: introducing a cannula into a patient's aorta; introducing a filter through a lumen of the cannula into the patient's aorta, the filter being separately insertable into and removable from the cannula lumen; deploying the filter at a site within the patient's aorta; and removing the filter from the patient's aorta.
Claim 2
Independent Claim
58 words
A method for surgery, comprising the steps of: introducing a cannula into a patient's aorta; introducing a filter through a lumen of the cannula into the patient's aorta, the filter being separately insertable into and removable from the cannula lumen; deploying the filter at a site within the patient's aorta; and removing the filter from the patient's aorta.
Claim 3
Dependent Claim
17 words
The method of claim 1 , further comprising the step of performing cardiac surgery on the patient.
Claim 4
Dependent Claim
17 words
The method of claim 1 , further comprising the step of performing cardiopulmonary bypass on the patient.
Claim 5
Dependent Claim
18 words
The method of claim 1 , further comprising the step of blocking the aorta upstream of the filter.
Claim 6
Dependent Claim
18 words
The method of claim 4 , wherein the filter is deployed before the step of blocking the aorta.
Claim 7
Dependent Claim
18 words
The method of claim 4 , wherein the filter is deployed after the step of blocking the aorta.
Claim 8
Dependent Claim
14 words
The method of claim 4 , further comprising the step of unblocking the aorta.
Claim 9
Dependent Claim
24 words
The method of claim 4 , further comprising the step of unblocking the aorta before the blood filter device is removed from the aorta.
Claim 10
Dependent Claim
17 words
The method of claim 4 , wherein the step of blocking the aorta includes clamping the aorta.
Claim 11
Dependent Claim
18 words
The method of claim 1 , wherein the lumen of the cannula receives blood from a bypass-oxygenator machine.
Claim 12
Dependent Claim
24 words
The method of claim 1 , wherein embolic material is generated and filtered before the blood filter device is removed from the patient's aorta.
Claim 13
Dependent Claim
23 words
The method of claim 1 , further comprising the step of creating an incision in the aorta in order to deploy the filter.
Claim 14
Dependent Claim
21 words
The method of claim 1 , wherein the filter is deployed in the ascending aorta between the heart and carotid arteries.
Claim 15
Dependent Claim
16 words
The method of claim 1 , wherein the filter is deployed while the heart is beating.
Claim 16
Dependent Claim
19 words
The method of claim 1 , further comprising the step of manipulating the aorta while the filter is deployed.
Claim 17
Dependent Claim
18 words
The method of claim 1 , further comprising the step of performing a vascular surgery on the patient.
Claim 18
Dependent Claim
18 words
The method of claim 1 , further comprising the step of clamping the aorta upstream of the filter.
Claim 19
Dependent Claim
18 words
The method of claim 17 , wherein the clamp is applied to entirely block flow through the aorta.
Claim 20
Dependent Claim
15 words
The method of claim 1 , further comprising the step of performing aneurysm repair surgery.
Claim 21
Dependent Claim
16 words
The method of claim 1 , wherein the cannula is introduced into a patient's ascending aorta.
Claim 22
Dependent Claim
16 words
The method of claim 1 , wherein the filter is removed after completion of a surgery.
Claim 23
Dependent Claim
18 words
The method of claim 1 , further comprising the step of performing coronary bypass surgery on the patient.
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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) | 2004-05-21 | 2004-11-20 | 2005-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-05-21 | 2008-11-20 | 2009-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-05-21 | 2012-11-20 | 2013-05-22 | $7700.00 | Window Closed / Lapsed |