US6565591B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medical device
Assignee: Salviac Ltd
•
Filing: 2001-06-25
•
Granted: 2003-05-20
•
Expires: 2021-06-25
Abstract
Abstract A collapsible filter element (40) for a transcatheter embolic protection device (1). The filter element (40) comprises a collapsible filter body (41) which is movable between a collapsed stored position for movement through a vascular system and an expanded position for extension across a blood vessel such that blood passing through the blood vessel is delivered through the filter element (40). A proximal inlet portion of the filter body (41) has two inlet openings (50) sized to allow blood and embolic material enter the filter body (41), and a distal outlet portion of the filter body (41) has a plurality of small outlet openings (51) to allow through-passage of blood, but to retain embolic material within the filter body (41). The filter body (41) is of an oriented polymeric material.
Inventors
- 👤 Eamon Brady
- 👤 Ronald Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:02
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/01; A61F2/013; A61F2002/018; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0063; A61F2230/0067
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
120 words
A collapsible filter element for a transcatheter embolic protection device, the filter element comprising: a collapsible filter body which is movable between a collapsed stored position for movement through a vascular system and an expanded position for extension across a blood vessel such that blood passing through the blood vessel is delivered through the filter element; a proximal inlet portion of the filter body having one or more inlet openings sized to allow blood and embolic material enter the filter body; a distal outlet portion of the filter body having a plurality of outlet openings to allow through-passage of blood, but to retain embolic material within the filter body; and the filter body including a polymeric material having stored orientations.
Claim 2
Dependent Claim
120 words
A collapsible filter element for a transcatheter embolic protection device, the filter element comprising: a collapsible filter body which is movable between a collapsed stored position for movement through a vascular system and an expanded position for extension across a blood vessel such that blood passing through the blood vessel is delivered through the filter element; a proximal inlet portion of the filter body having one or more inlet openings sized to allow blood and embolic material enter the filter body; a distal outlet portion of the filter body having a plurality of outlet openings to allow through-passage of blood, but to retain embolic material within the filter body; and the filter body including a polymeric material having stored orientations.
Claim 3
Dependent Claim
43 words
A filter element as claimed in claim 1 comprising a collapsible support frame, the support frame being movable between a collapsed position for movement through the vascular system and an extended outwardly projecting position to support the filter body in the expanded position.
Claim 4
Dependent Claim
18 words
A filter element as claimed in claim 2 wherein the filter body is independent of the support frame.
Claim 5
Dependent Claim
15 words
A filter element as claimed in claim 1 wherein the filter body comprises a membrane.
Claim 6
Dependent Claim
21 words
A filter element as claimed in claim 1 wherein the filter body has a stored axial orientation in excess of 15%.
Claim 7
Dependent Claim
21 words
A filter element as claimed in claim 1 wherein the filter body has a stored axial orientation in excess of 20%.
Claim 8
Dependent Claim
21 words
A filter element as claimed in claim 1 wherein the filter body has a stored axial orientation in excess of 30%.
Claim 9
Dependent Claim
21 words
A filter element as claimed in claim 1 wherein the filter body has a stored axial orientation in excess of 40%.
Claim 10
Dependent Claim
45 words
A filter element as claimed in claim 2 wherein the frame comprises a plurality of engagement segments, the engagement segments being spaced-apart longitudinally and transversely when the filter is in the deployed expanded configuration to urge the filter body into apposition with the vessel wall.
Claim 11
Dependent Claim
23 words
A filter element as claimed in claim 9 wherein the engagement segments define at least one at least partially substantially helical engagement track.
Claim 12
Dependent Claim
29 words
A filter element as claimed in claim 1 wherein the ultimate tensile strength of the oriented polymeric material of the filter body is at least 15,000 psi (103.425 MPa).
Claim 13
Dependent Claim
20 words
A filter element as claimed in claim 11 wherein the ultimate tensile strength is at least 25,000 psi (172.375 MPa).
Claim 14
Dependent Claim
20 words
A filter element as claimed in claim 11 wherein the ultimate tensile strength is at least 35,000 psi (241.325 MPa).
Claim 15
Dependent Claim
20 words
A filter element as claimed in claim 11 wherein the ultimate tensile strength is at least 40,000 psi (275.8 MPa).
Claim 16
Dependent Claim
20 words
A filter element as claimed in claim 1 wherein the material of the filter body is of polyester or polyamide.
Claim 17
Dependent Claim
18 words
A filter element as claimed in claim 1 wherein the material of the filter body is of polyester.
Claim 18
Dependent Claim
25 words
A filter element as claimed in claim 1 wherein the material of the filter body is selected from polyethyleneterephthalate (PET), polybutyleneterephthalate (PBT) and polynapthylterephthalate (PNT).
Claim 19
Dependent Claim
18 words
A filter element as claimed in claim 1 wherein the material of the filter body is of PET.
Claim 20
Dependent Claim
18 words
A filter element as claimed in claim 1 wherein the material of the filter body is of polyamide.
Claim 21
Dependent Claim
18 words
A filter element as claimed in claim 1 wherein the material of the filter body is an elastomer.
Claim 22
Dependent Claim
18 words
A filter element as claimed in claim 1 wherein the material of the filter body is a polyurethane.
Claim 23
Dependent Claim
29 words
A filter element as claimed in claim 1 wherein the polymeric material of the filter body is oriented at a temperature below the glass transition temperature of the material.
Claim 24
Dependent Claim
21 words
A filter element as claimed in claim 1 wherein the material of the filter body is oriented by stretch blow moulding.
Claim 25
Dependent Claim
32 words
A filter element as claimed in claim 1 wherein the filter body comprises a proximal body section, a distal section and an intermediate body section interconnecting the proximal and distal body sections.
Claim 26
Dependent Claim
121 words
A collapsible filter element for a transcatheter embolic protection device, the filter element comprising: a collapsible filter body which is movable between a collapsed stored position for movement through a vascular system and an expanded position for extension across a blood vessel such that blood passing through the blood vessel is delivered through the filter element; a proximal inlet portion of the filter body having one or more inlet openings sized to allow blood and embolic material enter the filter body; a distal outlet portion of the filter body having a plurality of outlet openings to allow through-passage of blood, but to retain embolic material within the filter body; and the filter body including a polymeric material having stored biaxial orientations.
Claim 27
Dependent Claim
121 words
A collapsible filter element for a transcatheter embolic protection device, the filter element comprising: a collapsible filter body which is movable between a collapsed stored position for movement through a vascular system and an expanded position for extension across a blood vessel such that blood passing through the blood vessel is delivered through the filter element; a proximal inlet portion of the filter body having one or more inlet openings sized to allow blood and embolic material enter the filter body; a distal outlet portion of the filter body having a plurality of outlet openings to allow through-passage of blood, but to retain embolic material within the filter body; and the filter body including a polymeric material having stored biaxial orientations.
Claim 28
Dependent Claim
21 words
A filter element as claimed in claim 25 wherein the filter body has a stored biaxial orientation in excess of 30%.
Claim 29
Dependent Claim
21 words
A filter element as claimed in claim 25 wherein the filter body has a stored biaxial orientation in excess of 60%.
Claim 30
Dependent Claim
21 words
A filter element as claimed in claim 25 wherein the filter body has a stored biaxial orientation in excess of 80%.
Claim 31
Dependent Claim
21 words
A filter element as claimed in claim 25 wherein the filter body has a stored biaxial orientation in excess of 100%.
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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) | 2006-05-19 | 2006-11-18 | 2007-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-05-19 | 2010-11-18 | 2011-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-05-19 | 2014-11-18 | 2015-05-20 | $7700.00 | Window Closed / Lapsed |