US6511496B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Embolic protection device for use in interventional procedures
Assignee: Abbott Cardiovascular Systems Inc
•
Filing: 2000-09-12
•
Granted: 2003-01-28
•
Expires: 2020-09-12
Abstract
Abstract An intravascular filter device for capturing embolic particles entrained in blood flowing in an arterial vessel during an interventional procedure. The filter includes an expandable strut assembly and a filtering medium. Each strut is coated with an elastic polymer in order to minimize trauma to an arterial lumen upon deployment of the filter and to ensure secure adhesion of the filtering medium to the struts. Attached to the coating of the strut assembly is the filtering medium which is formed from a thin elastic polymer membrane containing a plurality of holes which allow blood to pass through filter while capturing embolic particles. The filtering medium is attached to the layer of polymeric material by laser welding, ultrasonic welding or adhesive bonding.
Inventors
- 👤 Benjamin C. Huter
- 👤 Scott J. Huter
- 👤 Christopher L. Steadham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:01
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/01; A61F2/0108; A61F2002/018; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0028; A61F2230/005; A61F2230/0063; A61F2230/0067
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
100 words
A filter device for capturing embolic particles released into a vessel lumen of a patient, comprising: an expandable strut assembly having a plurality of expandable struts adapted to move between a collapsed position and an expanded position; a layer of polymeric material disposed on the expandable struts; and a filtering element attached to the polymeric layer disposed on the struts which is movable with the struts to expand and contact the wall of the vessel lumen, wherein embolic debris entrained in the fluid flow of the vessel is captured by the filtering element as fluid flows through the filtering element.
Claim 2
Dependent Claim
100 words
A filter device for capturing embolic particles released into a vessel lumen of a patient, comprising: an expandable strut assembly having a plurality of expandable struts adapted to move between a collapsed position and an expanded position; a layer of polymeric material disposed on the expandable struts; and a filtering element attached to the polymeric layer disposed on the struts which is movable with the struts to expand and contact the wall of the vessel lumen, wherein embolic debris entrained in the fluid flow of the vessel is captured by the filtering element as fluid flows through the filtering element.
Claim 3
Dependent Claim
13 words
The filter device of claim 1 , wherein: the expandable struts are self-expanding.
Claim 4
Dependent Claim
39 words
The filter device of claim 1 , wherein: the layer of polymeric material disposed on the expandable struts is selected from the group consisting of polyester, polyamide, polyethylene, polytetrafluoroethylene (“PTFE”), expanded polytetrafluoroethylene (“ePTFE”), polyurethane, FEP, EAA copolymer and polyolefin.
Claim 5
Dependent Claim
30 words
The filter device of claim 1 , further including: a shaft member having proximal and distal ends; and wherein the expandable strut assembly is rotatably affixed to the shaft member.
Claim 6
Dependent Claim
16 words
The filter device of claim 1 , wherein: the filtering element is a thin elastic membrane.
Claim 7
Dependent Claim
25 words
The filter device of claim 5 , wherein: the elastic membrane has a thickness within the range of about 0.001 inches to about 0.005 inches.
Claim 8
Dependent Claim
32 words
The filter device of claim 5 , wherein: the elastic membrane is made from a material selected from the group consisting of polyurethane, polytetrafluoroethylene (“PTFE”), expanded polytetrafluoroethylene (“ePTFE”), polyamide, polyolefin, and polyethylene.
Claim 9
Dependent Claim
39 words
The filter device of claim 7 , wherein: the layer of polymeric material disposed on the expandable struts is selected from the group consisting of polyester, polyamide, polyethylene, polytetrafluoroethylene (“PTFE”), expanded polytetrafluoroethylene (“ePTFE”), FEP, polyurethane, EAA copolymer, and polyolefin.
Claim 10
Dependent Claim
24 words
The filter device of claim 1 , wherein: the layer of polymeric material is made from the same material which forms the filtering element.
Claim 11
Dependent Claim
27 words
The filter device of claim 1 , wherein: the layer of polymeric material is the same class of polymer as the material which forms the filtering element.
Claim 12
Dependent Claim
26 words
The filtering device of claim 10 , wherein: the filtering element and the layer of polymeric material disposed on the expandable struts are made from polyurethane.
Claim 13
Dependent Claim
22 words
The filtering device of claim 1 , wherein: the filtering element is bonded to the layer of polymeric material by laser welding.
Claim 14
Dependent Claim
22 words
The filter device of claim 1 , wherein: the filtering element is bonded to the layer of polymeric element by ultrasonic welding.
Claim 15
Dependent Claim
22 words
The filtering device of claim 1 , wherein: the filtering element is bonded to the layer of polymeric material by adhesive bonding.
Claim 16
Dependent Claim
14 words
The filtering device of claim 14 , wherein: the adhesive is a plastic adhesive.
Claim 17
Dependent Claim
22 words
The filtering device of claim 1 , wherein: the filtering element is bonded to the layer of polymer material by solvent bonding.
Claim 18
Dependent Claim
16 words
The filtering device of claim 1 , wherein: the strut assembly is made from stainless steel.
Claim 19
Dependent Claim
16 words
The filtering device of claim 1 , wherein: the strut assembly is made from nickel-titanium alloy.
Claim 20
Dependent Claim
21 words
The filtering device of claim 1 , wherein: the layer of polymeric material encapsulates the expandable struts of the strut assembly.
Claim 21
Dependent Claim
22 words
The filtering device of claim 1 , wherein: the layer of polymeric material encapsulates the entire outer surface of the strut assembly.
Claim 22
Dependent Claim
39 words
The filter device of claim 1 , wherein: the filtering element includes a leading edge having a pattern of alternating peak and valley regions which prevent the leading edge from entering into a restraining sheath all at one time.
Claim 23
Dependent Claim
21 words
The filter device of claim 21 , wherein: the peak portions are attachable to the struts of the expandable strut assembly.
Claim 24
Dependent Claim
28 words
The filter device of claim 21 , wherein: the depth of the valley region on the filter edge is a progressively larger dimension from an adjoining valley portion.
Claim 25
Dependent Claim
26 words
The filter device of claim 21 , wherein: the depth of the valley portion from the peak portion is the same for each adjacent valley portion.
Claim 26
Dependent Claim
28 words
The filter device of claim 21 , wherein: the height of the peak region on the filter edge is a progressively larger dimension from an adjoining peak portion.
Claim 27
Dependent Claim
26 words
The filter element of claim 21 , wherein: the height of the peak portion from the valley portion is the same for each adjacent peak portion.
Claim 28
Dependent Claim
32 words
The filter device of claim 26 , wherein the filtering element is made from a material selected from the group consisting of polyurethane, polytetrafluoroethylene (“PTFE”), expanded polytetrafluoroethylene (“ePTFE”), polyamide, polyolefin, and polyethylene.
Claim 29
Dependent Claim
120 words
A filter device for capturing embolic particles released into a vessel lumen of a patient, comprising: an inner shaft member having proximal and distal ends; an expandable strut assembly rotatably connected to the inner shaft member having a plurality expandable struts adapted to move between a collapsed position and expanded position; a layer of polymeric material disposed on the expandable struts; and a filtering element made from an elastic polymeric material which is attached to the polymeric layer disposed on each strut and is movable with the struts to expand to contact the wall of the vessel lumen, wherein blood is forced to flow through the filtering element to capture embolic debris entrained in the fluid flow of the vessel.
Claim 30
Dependent Claim
120 words
A filter device for capturing embolic particles released into a vessel lumen of a patient, comprising: an inner shaft member having proximal and distal ends; an expandable strut assembly rotatably connected to the inner shaft member having a plurality expandable struts adapted to move between a collapsed position and expanded position; a layer of polymeric material disposed on the expandable struts; and a filtering element made from an elastic polymeric material which is attached to the polymeric layer disposed on each strut and is movable with the struts to expand to contact the wall of the vessel lumen, wherein blood is forced to flow through the filtering element to capture embolic debris entrained in the fluid flow of the vessel.
Claim 31
Dependent Claim
39 words
The filter device of claim 28 , wherein the layer of polymeric material disposed on the expandable struts is selected from the group consisting of polyester, polyamide, polyethylene, polytetrafluoroethylene (“PTFE”), expanded polytetrafluoroethylene (“ePTFE”), FEP, polyurethane, EAA copolymer, and polyolefin.
Claim 32
Dependent Claim
106 words
A filter device for capturing embolic particles released into a vessel lumen of a patient, comprising: a plurality of expandable struts adapted to move between a collapsed position and an expanded position; means for moving the struts between the collapsed and expanded positions; a layer of polymeric material disposed on the expandable struts; and a filtering element attached to the polymeric layer disposed on the struts which is movable with the struts to expand and contact the wall of the vessel lumen, wherein embolic debris entrained in the fluid flow of the vessel is captured by the filtering element as fluid flows through the filtering element.
Claim 33
Dependent Claim
106 words
A filter device for capturing embolic particles released into a vessel lumen of a patient, comprising: a plurality of expandable struts adapted to move between a collapsed position and an expanded position; means for moving the struts between the collapsed and expanded positions; a layer of polymeric material disposed on the expandable struts; and a filtering element attached to the polymeric layer disposed on the struts which is movable with the struts to expand and contact the wall of the vessel lumen, wherein embolic debris entrained in the fluid flow of the vessel is captured by the filtering element as fluid flows through the filtering element.
References Cited (Backward Citations)
US3952747A
Cited
GB2020557A
Cited
US4425908A
Cited
US4643184A
Cited
US4494531A
Cited
US4727873A
Cited
US4619246A
Cited
US4612931A
Cited
US4688553A
Cited
US4790813A
Cited
US4706671A
Cited
US4662885A
Cited
US4650466A
Cited
US4790812A
Cited
US4723549A
Cited
US4781177A
Cited
US4794928A
Cited
US4873978A
Cited
US4998539A
Cited
US4921478A
Cited
US4990156A
Cited
US4832055A
Cited
US4921484A
Cited
US5152777A
Cited
US4969891A
Cited
US5102415A
Cited
US5100425A
Cited
US4997435A
Cited
US5092839A
Cited
US5421832A
Cited
US5071407A
Cited
US5496277A
Cited
US5329942A
Cited
EP0472334A1
Cited
US5108419A
Cited
US5160342A
Cited
WO1992003097A1
Cited
US5064428A
Cited
US5053008A
Cited
US5695518A
Cited
US5350398A
Cited
US5330482A
Cited
US5192286A
Cited
US5626605A
Cited
US5324304A
Cited
US5649953A
Cited
US5501694A
Cited
US5490859A
Cited
US5836868A
Cited
US5792157A
Cited
US5383887A
Cited
US5496330A
Cited
US5370657A
Cited
US5897567A
Cited
US5836969A
Cited
US5634942A
Cited
US5720764A
Cited
WO1996001591A1
Cited
US5601595A
Cited
US5746767A
Cited
US5792145A
Cited
US5549626A
Cited
US5795322A
Cited
US5755790A
Cited
US5681347A
Cited
US5833650A
Cited
US5792156A
Cited
US5725550A
Cited
US5779716A
Cited
US5980555A
Cited
US5989281A
Cited
US5769816A
Cited
WO1997017100A1
Cited
US6013093A
Cited
US5695519A
Cited
US5810874A
Cited
US5976172A
Cited
US5662671A
Cited
WO1998002084A2
Cited
US5669933A
Cited
US5846251A
Cited
US5876367A
Cited
US5968071A
Cited
WO1998033443A1
Cited
US5800457A
Cited
US5814064A
Cited
US6001118A
Cited
US5827324A
Cited
US5772674A
Cited
US5868708A
Cited
US5911734A
Cited
US5910154A
Cited
US5846260A
Cited
US5800525A
Cited
US5848964A
Cited
US5928260A
Cited
US5941896A
Cited
WO1999023976A1
Cited
US6152946A
Cited
WO2000049970A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-01-27 | 2006-07-29 | 2007-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-01-27 | 2010-07-29 | 2011-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-01-27 | 2014-07-29 | 2015-01-28 | $7700.00 | Window Closed / Lapsed |