EP0541063A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Improved occluder for repair of cardiac and vascular defects
Assignee: Boston Children's Hospital
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Filing: 1992-11-04
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Granted: —
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Expires: 2012-11-04
Abstract
Abstract A device (10) for the percutaneous transluminal repair of septal defects is disclosed. The device comprises first and second expandable occluders (12,14) fastened to each other, each occluder including a framework having a central hub (16) with elongated struts (18) radiating therefrom. The struts are constructed such that they have a resistance to fatigue that exceeds the maximum fatigue stresses to which the struts will be subjected over a prolonged period in vivo. As such, the device exhibits a significantly decreased likelihood of metal fatigue failures after prolonged exposure in vivo.
Inventors
- 👤 Jack Fagan
- 👤 L. Ven Raman
- 👤 George Duval
- 👤 Gerry Ouellette
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-22 23:22
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/0057; A61B2017/00575; A61B2017/00588; A61B2017/00592; A61B2017/00606
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
129 words
A device for percutaneous transluminal repair of septal defects comprising a first occluder having an initial cross sectional configuration smaller than that of the defect to be repaired and a second expanced configuration larger than that of the defect; a second occluder having an initial cross sectional configuration and a second expanded configuration larger than that of the defect; and a connector for fastening the first occluder to the second occluder; at least one of said first occluder or said second occluder including a framework comprising a central hub having a plurality of elongated struts radiating therefrom; wherein at least one of said struts comprises means for resisting fatigue, said means having a resistance to fatigue exceeding the maximum fatigue to which the strut may be subjected in vivo.
Claim 2
Dependent Claim
25 words
The device of claim 1 wherein said at least one elongated strut comprises a wire having a square, round, rectangular, trapezoidal or triangular cross section.
Claim 3
Dependent Claim
13 words
The device of claim 2 wherein said cross section is approximately 0.005-0.015 inches.
Claim 4
Dependent Claim
24 words
The device of claim 2 wherein said at least one elongated strut comprises a wire having a square cross section of approximately 0.008 inches.
Claim 5
Dependent Claim
26 words
The device of claim 2 wherein said at least one elongated strut comprises a wire having a circular cross section of approximately 0.009 inches in diameter.
Claim 6
Dependent Claim
28 words
The device of claim 2 wherein said at least one elongated strut comprises a wire having a rectangular cross section of approximately 0.007 inches by approximately 0.009 inches.
Claim 7
Dependent Claim
18 words
The device of claim 1 wherein said at least one elongated strut includes a plurality of flexural points.
Claim 8
Dependent Claim
17 words
The device of claim 7 wherein said at least one elongated strut includes three flexural hinge points.
Claim 9
Dependent Claim
17 words
The device of claim 7 wherein said flexural hinge points comprise coiled portions of the elongated strut.
Claim 10
Dependent Claim
17 words
The device of claim 9 wherein said coiled portions have an inner diameter of approximately 0.010-0.025 inches.
Claim 11
Dependent Claim
17 words
The device of claim 9 wherein said coiled portions have an inner diameter of approximately 0.016 inches.
Claim 12
Dependent Claim
14 words
The device of claim 9 wherein said coiled portions include at least two coils.
Claim 13
Dependent Claim
14 words
The device of claim 9 wherein said coiled portions include at least three coils.
Claim 14
Dependent Claim
26 words
The device of claim 1 wherein said at least one elongated strut comprises a wire fabricated of a metallic alloy containing nickel, cobalt, chromium and molybdenum.
Claim 15
Dependent Claim
19 words
The device of claim 14 wherein said alloy comprises approximately 35% nickel, 35% cobalt, 20% chromium and 9.75% molybdenum.
Claim 16
Dependent Claim
15 words
The device of claim 14 wherein said alloy further comprises manganese, carbon, beryllium and iron.
Claim 17
Dependent Claim
23 words
The device of claim 15 wherein said alloy comprises at least approximately 14% nickel, 39% cobalt, 19% chromium, 6% molybdenum and 1.5% manganese.
Claim 18
Dependent Claim
18 words
The device of claim 16 wherein said alloy further comprises up to approximately 0.15% carbon and 0.1% beryllium.
Claim 19
Dependent Claim
11 words
The device of claim 16 wherein said alloy further comprises iron.
Claim 20
Dependent Claim
19 words
The device of claim 14 wherein said alloy is annealed to a degree sufficient to cause precipitation hardening thereof.
Claim 21
Dependent Claim
19 words
The device of claim 14 wherein said wire has been cold-worked to reduce its cross-sectional area by approximately 30-80%.
Claim 22
Dependent Claim
17 words
The device of claim 20 wherein said annealing is carried out at a temperature between approximately 450-1000°F.
Claim 23
Independent Claim
133 words
A device for percutaneous transluminal repair of septal defects comprising: a first occluder having an initial cross sectional configuration smaller than that of the defect to be repaired and a second expanded configuration larger than that of the defect; a second occluder having an initial cross sectional configuration and d second expanded configuration larger than that of the defect; and a connector for fastening the first occluder to the second occluder; each of the first occluder and second occluder comprising a framework having a central hub with a plurality of elongated struts radiating therefrom; the framework fabricated of a wire having a square, rectangular, round, trapezoidal or triangular cross section and having a metallic alloy composition comprising nickel, cobalt, chromium and molybdenum; each of said elongated struts further including three flexural hinge points.
Claim 24
Dependent Claim
21 words
The device of claim 23 wherein the metallic alloy composition is annealed to a degree sufficient to cause precipitation hardening thereof.
Claim 25
Dependent Claim
22 words
The device of claim 23 wherein the metallic alloy composition comprises an alloy selected from the group consisting of MP35N and Elgiloy.
Claim 26
Dependent Claim
17 words
The device of claim 23 wherein the flexural hinge points comprise coiled portions of the elongated strut.
Claim 27
Independent Claim
48 words
A device for percutaneous transluminal repair of septal defects comprising at least one occluder adapted to be positioned across the septal defect to substantially occlude the defect and prevent fluid flow therethrough, the occluder including a framework which comprises a metallic alloy containing nickel, cobalt, chromium and molybdenum.
Claim 28
Dependent Claim
19 words
The device of claim 27 wherein said alloy comprises approximately 35% nickel, 35% cobalt, 20% chromium and 9.75% molybdenum.
Claim 29
Dependent Claim
11 words
The device of claim 28 wherein said alloy comprises MP35N alloy.
Claim 30
Dependent Claim
15 words
The device of claim 27 wherein said alloy further comprises manganese, carbon, beryllium and iron.
Claim 31
Dependent Claim
23 words
The device of claim 30 wherein said alloy comprises at least approximately 14% nickel, 39% cobalt, 19% chromium, 6% molybdenum and 1.5% manganese.
Claim 32
Dependent Claim
18 words
The device of claim 31 wherein said alloy further comprises up to approximately 0.15% carbon and 0.1% beryllium.
Claim 33
Dependent Claim
11 words
The device of claim 31 wherein said alloy further comprises iron.
Claim 34
Dependent Claim
11 words
The device of claim 31 wherein said alloy comprises Elgiloy alloy.
References Cited (Backward Citations)
No citation records indexed.
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