US6117154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cannula with associated filter and methods of use during cardiac surgery
Assignee: Edwards Lifesciences Corp
•
Filing: 1999-06-17
•
Granted: 2000-09-12
•
Expires: 2019-06-17
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 following steps: introducing a mesh into a blood vessel to entrap embolic material; adjusting the mesh, if necessary, during the course of filtration; and removing the mesh and the entrapped foreign matter from the blood vessel. Additionally, visualization techniques are used to ensure effective filtration.
Inventors
- 👤 Denise Barbut
- 👤 Jonathan D. Root
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:26
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: 24
Claim 1
Independent Claim
60 words
A method for protecting a patient from embolization, comprising the steps of: providing a blood filter device; introducing the blood filter device into the patient's aorta; deploying the filter at a site within the patient's aorta; blocking the aorta in a region upstream of the site within the patient's aorta; and removing the blood filter device from the patient's aorta.
Claim 2
Independent Claim
60 words
A method for protecting a patient from embolization, comprising the steps of: providing a blood filter device; introducing the blood filter device into the patient's aorta; deploying the filter at a site within the patient's aorta; blocking the aorta in a region upstream of the site within the patient's aorta; and removing the blood filter device from the patient's aorta.
Claim 3
Dependent Claim
16 words
The method of claim 1, further comprising the step of performing cardiac surgery on the patient.
Claim 4
Dependent Claim
16 words
The method of claim 1, further comprising the step of performing cardiopulmonary bypass on the patient.
Claim 5
Dependent Claim
30 words
The method of claim 1, wherein the blood filter device has a filter adapted to operate at a site within the aorta of the patient, and to be removed thereafter.
Claim 6
Dependent Claim
20 words
The method of claim 4, wherein the blood filter device comprises a cannula adapted to receive a separately insertable filter.
Claim 7
Dependent Claim
26 words
The method of claim 5, wherein the cannula includes a lumen, and wherein the filter is inserted into the aorta through the lumen of the cannula.
Claim 8
Dependent Claim
17 words
The method of claim 6, wherein the lumen of the cannula receives blood from a bypass-oxygenator machine.
Claim 9
Dependent Claim
23 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 10
Dependent Claim
17 words
The method of claim 1, wherein the filter is deployed before the step of blocking the aorta.
Claim 11
Dependent Claim
17 words
The method of claim 1, wherein the filter is deployed after the step of blocking the aorta.
Claim 12
Dependent Claim
13 words
The method of claim 1, further comprising the step of unblocking the aorta.
Claim 13
Dependent Claim
23 words
The method of claim 1, further comprising the step of unblocking the aorta before the blood filter device is removed from the aorta.
Claim 14
Dependent Claim
16 words
The method of claim 1, wherein the step of blocking the aorta includes clamping the aorta.
Claim 15
Dependent Claim
22 words
The method of claim 1, further comprising the step of creating an incision in the aorta in order to deploy the filter.
Claim 16
Dependent Claim
20 words
The method of claim 1, wherein the filter is deployed in the ascending aorta between the heart and carotid arteries.
Claim 17
Independent Claim
63 words
A method for protecting a patient from embolization, comprising the steps of: providing a blood filter device; introducing the blood filter device into the patient's aorta; blocking the aorta; deploying the filter at a site within the patient's aorta; unblocking the aorta in a region upstream of the site within the patient's aorta; and removing the blood filter device from the patient's aorta.
Claim 18
Independent Claim
63 words
A method for protecting a patient from embolization, comprising the steps of: providing a blood filter device; introducing the blood filter device into the patient's aorta; blocking the aorta; deploying the filter at a site within the patient's aorta; unblocking the aorta in a region upstream of the site within the patient's aorta; and removing the blood filter device from the patient's aorta.
Claim 19
Dependent Claim
16 words
The method of claim 16, further comprising the step of performing cardiac surgery on the patient.
Claim 20
Dependent Claim
16 words
The method of claim 16, further comprising the step of performing cardiopulmonary bypass on the patient.
Claim 21
Independent Claim
71 words
A method for protecting a patient from embolization, comprising the steps of: providing a cannula adapted to receive a separately insertable filter; introducing the cannula into the patient's aorta; introducing the filter through the cannula into the patient's aorta; deploying the filter at a site within the patient's aorta; manipulating the aorta in a region upstream of the site within the patient's aorta; and removing the filter from the patient's aorta.
Claim 22
Independent Claim
71 words
A method for protecting a patient from embolization, comprising the steps of: providing a cannula adapted to receive a separately insertable filter; introducing the cannula into the patient's aorta; introducing the filter through the cannula into the patient's aorta; deploying the filter at a site within the patient's aorta; manipulating the aorta in a region upstream of the site within the patient's aorta; and removing the filter from the patient's aorta.
Claim 23
Independent Claim
51 words
A method for protecting a patient from embolization, comprising the steps of: providing a blood filter device; introducing the blood filter device into the patient's aorta; deploying the filter at a site within the patient's aorta while the heart is beating; and removing the blood filter device from the patient's aorta.
Claim 24
Independent Claim
51 words
A method for protecting a patient from embolization, comprising the steps of: providing a blood filter device; introducing the blood filter device into the patient's aorta; deploying the filter at a site within the patient's aorta while the heart is beating; and removing the blood filter device from the patient's aorta.
References Cited (Backward Citations)
US3701433A
Cited
SU764684A1
Cited
US4494531A
Cited
US4572724A
Cited
DE3417738A1
Cited
US4619246A
Cited
FR2567405A1
Cited
US4688553A
Cited
US4723549A
Cited
FR2606642A1
Cited
US4793348A
Cited
US4955895A
Cited
US4873978A
Cited
US4832055A
Cited
US5152777A
Cited
US4969891A
Cited
US5133733A
Cited
US5421832A
Cited
EP0437121A2
Cited
US5300086A
Cited
US5329942A
Cited
US5053008A
Cited
US5147379A
Cited
US5370685A
Cited
US5415630A
Cited
US5190555A
Cited
US5375612A
Cited
US5599329A
Cited
US5330451A
Cited
US5383887A
Cited
US5370657A
Cited
BR9301980A
Cited
US5549626A
Cited
WO1997017100A1
Cited
US5769816A
Cited
US5695519A
Cited
EP0791340A1
Cited
US5814064A
Cited
US5846260A
Cited
WO1998055175A1
Cited
US5848964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-09-12 | 2004-03-13 | 2004-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-09-12 | 2008-03-13 | 2008-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-09-12 | 2012-03-13 | 2012-09-12 | $7700.00 | Window Closed / Lapsed |