Patent EP0425783A1 successfully refreshed from Google Patents.
Patent US6379368B1 successfully refreshed from Google Patents.
US6379368B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Occlusion device with non-thrombogenic properties
Assignee: Encore Medical Inc
•
Filing: 1999-05-13
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Granted: 2002-04-30
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Expires: 2019-05-13
Abstract
Abstract An occlusion device for the closure of atrial or ventricular septal defects, for the closure of patent ductus arteriosus, patent foramen ovale, or other vascular defects. The occlusion device comprises a center section extending in an axial direction, with upper and lower stranded wire fixation devices emanating from the center section. The stranded wire fixation devices have been heat treated and formed with a shape memory. The stranded wire fixation devices are formed of multiple wire strands and have atraumatic tips. Attached to the fixation devices are heparin treated sheets, which serve to occlude the opening and significantly reduce the occurrence of thrombosis at the device.
Inventors
- 👤 Michael P. Corcoran
- 👤 Peter M. Buonomo
- 👤 Joseph A. Marino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:43
CPC Classifications
A; A61; A61L; A61L31/00; A61L31/12; A61L31/125; A61L31/129; A61B; A61B17/00; A61B17/0057; A61B17/12; A61B17/12022; A61B17/12099; A61B17/12122; A61B17/12131; A61B17/12168; A61B17/12172; A61L31/14; A61L31/146; A61L33/00; A61L33/0005; A61L33/0011; A61L33/0029; A61L33/007; A61L33/06; A61L33/064; A61B2017/00575; A61B2017/00592; A61B2017/00606; A61B2017/1205; A61L2430/00; A61L2430/36
Claims Analysis
Total Claims: 77
Claim 1
Independent Claim
63 words
An occlusion device, the device comprising: a center section extending in an axial direction; upper and lower elastic shape memory fixation devices emanating from the center section; and first and second foam sheets attached to the upper and lower fixation devices, respectively, wherein the foam sheets are formed of a foam mixture comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol.
Claim 2
Dependent Claim
63 words
An occlusion device, the device comprising: a center section extending in an axial direction; upper and lower elastic shape memory fixation devices emanating from the center section; and first and second foam sheets attached to the upper and lower fixation devices, respectively, wherein the foam sheets are formed of a foam mixture comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol.
Claim 3
Dependent Claim
22 words
The occlusion device of claim 1 wherein the heparin is bonded to the polyvinyl alcohol during formation of the polyvinyl alcohol foam.
Claim 4
Dependent Claim
24 words
The occlusion device of claim 1 wherein the first and second sheets have a thickness of between about 0.2 millimeter and about 2.0 millimeters.
Claim 5
Dependent Claim
20 words
The occlusion device of claim 1 wherein the center section has an axial length of less than about 20 millimeters.
Claim 6
Dependent Claim
23 words
The occlusion device of claim 4 wherein the center section has an axial length of between about 1 millimeter and about 10 millimeters.
Claim 7
Dependent Claim
21 words
The occlusion device of claim 1 wherein the fixation devices are preshaped and heat treated stranded wire formed of nickel-titanium wires.
Claim 8
Dependent Claim
20 words
The occlusion device of claim 1 wherein an atraumatic tip is located at an outer end of each fixation device.
Claim 9
Dependent Claim
16 words
The occlusion device of claim 1 wherein the fixation devices are formed of multiple stranded wires.
Claim 10
Dependent Claim
14 words
The occlusion device of claim 1 wherein the fixation devices are formed of cable.
Claim 11
Dependent Claim
16 words
The occlusion device of claim 1 wherein the fixation devices are a mesh of stranded wire.
Claim 12
Dependent Claim
15 words
The occlusion device of claim 1 wherein the center section is a mesh of wires.
Claim 13
Dependent Claim
65 words
An occlusion device for the closure of a physical anomaly, the device comprising: a support structure including a center section and first and second flexible arms extending outward from the center section; and a first foam sheet attached to the first flexible arm, wherein the first foam sheet is formed of a foam mixture comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol.
Claim 14
Dependent Claim
65 words
An occlusion device for the closure of a physical anomaly, the device comprising: a support structure including a center section and first and second flexible arms extending outward from the center section; and a first foam sheet attached to the first flexible arm, wherein the first foam sheet is formed of a foam mixture comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol.
Claim 15
Dependent Claim
40 words
The occlusion device in claim 12 and further comprising a second foam sheet attached to the second flexible arm, wherein the second foam sheet is formed of a foam comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol.
Claim 16
Dependent Claim
24 words
The occlusion device in claim 13 wherein the polyvinyl alcohol foam sheets have a thickness of between about 0.2 millimeter and about 2.0 millimeters.
Claim 17
Dependent Claim
22 words
The occlusion device of claim 13 wherein the sheets are treated with heparin by dipping each sheet in a solution comprising heparin.
Claim 18
Dependent Claim
30 words
The occlusion device of claim 13 wherein the sheets are treated with heparin by plasma etching a surface of the sheets and dipping the sheets in a solution comprising heparin.
Claim 19
Dependent Claim
23 words
The occlusion device of claim 13 wherein the heparin is bonded to the polyvinyl alcohol during formation of the polyvinyl alcohol foam sheets.
Claim 20
Dependent Claim
20 words
The occlusion device in claim 12 wherein the center section has an axial length of less than about 20 millimeters.
Claim 21
Dependent Claim
24 words
The occlusion device in claim 12 wherein the first and second flexible arms are pre-shaped and heat treated stranded wire formed of nickel-titanium wires.
Claim 22
Dependent Claim
22 words
The occlusion device of claim 12 wherein an atraumatic tip is located at an outer end of each stranded wire flexible arm.
Claim 23
Dependent Claim
22 words
The occlusion device of claim 12 wherein the first and second flexible arms are formed by cables formed by multiple stranded wire.
Claim 24
Dependent Claim
19 words
The occlusion device of claim 12 wherein the first and second flexible arms are formed of multiple stranded wires.
Claim 25
Dependent Claim
19 words
The occlusion device of claim 12 wherein the first and second flexible arms are a mesh of stranded wire.
Claim 26
Dependent Claim
16 words
The occlusion device of claim 12 wherein the center section is a mesh of stranded wire.
Claim 27
Dependent Claim
72 words
An occlusion device, the device comprising: a center strut; a first plurality of fixation devices extending from a first end of the center strut; a first sheet attached to the first plurality of fixation devices, wherein the first sheet is formed of a foam mixture comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol; and a second plurality of fixation devices extending from a second end of the center strut.
Claim 28
Dependent Claim
72 words
An occlusion device, the device comprising: a center strut; a first plurality of fixation devices extending from a first end of the center strut; a first sheet attached to the first plurality of fixation devices, wherein the first sheet is formed of a foam mixture comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol; and a second plurality of fixation devices extending from a second end of the center strut.
Claim 29
Dependent Claim
40 words
The occlusion device of claim 25 and further comprising a second sheet attached to the second plurality of fixation devices, wherein the second sheet is formed of a foam comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol.
Claim 30
Dependent Claim
23 words
The occlusion device of claim 26 wherein the sheets are treated with heparin by dipping the sheets in a solution of comprising heparin.
Claim 31
Dependent Claim
30 words
The occlusion device of claim 26 wherein the sheets are treated with heparin by plasma etching the surface of the sheets and dipping the sheets in a solution comprising heparin.
Claim 32
Dependent Claim
23 words
The occlusion device of claim 26 wherein the heparin is chemically bonded to the polyvinyl alcohol during formation of the polyvinyl alcohol foam.
Claim 33
Dependent Claim
20 words
The occlusion device in claim 25 wherein the center strut has an axial length of less than about 20 millimeters.
Claim 34
Dependent Claim
21 words
The occlusion device in claim 25 wherein the fixation devices are pre-shaped and heat treated stranded wire formed of nickel-titanium wires.
Claim 35
Dependent Claim
20 words
The occlusion device in claim 25 wherein an atraumatic tip is located at the outer end of each fixation device.
Claim 36
Dependent Claim
19 words
The occlusion device of claim 25 wherein the fixation devices are formed by cables formed of multiple wire strands.
Claim 37
Dependent Claim
16 words
The occlusion device of claim 25 wherein the fixation devices are formed of multiple wire strands.
Claim 38
Dependent Claim
16 words
The occlusion device of claim 25 wherein the fixation devices are a mesh of stranded wires.
Claim 39
Dependent Claim
16 words
The occlusion device of claim 35 wherein the center strut is a mesh of stranded wire.
Claim 40
Dependent Claim
16 words
The occlusion device of claim 25 wherein the center strut is a mesh of stranded wires.
Claim 41
Dependent Claim
112 words
An occlusion device, the device comprising: a center strut having distal and proximal ends; a first set of stranded wire support arms extending from the distal end of the center strut; a first sheet attached to the first set of arms, wherein the first sheet is formed from a foam mixture comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol; a second set of stranded wire support arms extending from the proximal end of the center strut; and a second sheet attached to the second set of support arms, wherein the second sheet is formed from a foam mixture comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol.
Claim 42
Dependent Claim
112 words
An occlusion device, the device comprising: a center strut having distal and proximal ends; a first set of stranded wire support arms extending from the distal end of the center strut; a first sheet attached to the first set of arms, wherein the first sheet is formed from a foam mixture comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol; a second set of stranded wire support arms extending from the proximal end of the center strut; and a second sheet attached to the second set of support arms, wherein the second sheet is formed from a foam mixture comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol.
Claim 43
Dependent Claim
24 words
The occlusion device in claim 38 wherein the first and second sheets have a thickness of between about 0.2 millimeter and about 2.0 millimeters.
Claim 44
Dependent Claim
20 words
The occlusion device in claim 38 wherein the center strut has an axial length of less than about 20 millimeters.
Claim 45
Dependent Claim
21 words
The occlusion device in claim 38 wherein the support arms are pre-shaped and heat treated stranded wire formed of nickel-titanium wires.
Claim 46
Dependent Claim
20 words
The occlusion device in claim 38 wherein an atraumatic tip is located at the outer end of each support arm.
Claim 47
Dependent Claim
25 words
The occlusion device of claim 38 wherein the first and second sheets are treated with heparin by dipping the sheets in a solution comprising heparin.
Claim 48
Dependent Claim
33 words
The occlusion device of claim 38 wherein the first and second sheets are treated with heparin by plasma etching a surface of the sheets and dipping the sheets in a solution comprising heparin.
Claim 49
Dependent Claim
14 words
The occlusion device of claim 38 wherein the support arms are formed of cables.
Claim 50
Dependent Claim
16 words
The occlusion device of claim 38 wherein the support arms are a mesh of stranded wire.
Claim 51
Dependent Claim
16 words
The occlusion device of claim 38 wherein the heparin chemically bonds to the polyvinyl alcohol foam.
Claim 52
Dependent Claim
82 words
An occlusion device for the closure of a physical anomaly, the occlusion device comprising: a center piece extending in an axial direction; first and second collapsible support frames spaced from one another and emanating from the center piece, the support frames being formed by multiwire strands; and first and second foam sheets attached to the first and second collapsible support frames, respectively, wherein the sheets are formed from a foam mixture comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol.
Claim 53
Dependent Claim
82 words
An occlusion device for the closure of a physical anomaly, the occlusion device comprising: a center piece extending in an axial direction; first and second collapsible support frames spaced from one another and emanating from the center piece, the support frames being formed by multiwire strands; and first and second foam sheets attached to the first and second collapsible support frames, respectively, wherein the sheets are formed from a foam mixture comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol.
Claim 54
Dependent Claim
24 words
The occlusion device of claim 48 wherein the first and second sheets have a thickness of between about 0.2 millimeter and about 2.0 millimeters.
Claim 55
Dependent Claim
25 words
The occlusion device of claim 48 wherein the first and second sheets are treated with heparin by dipping the sheets in a solution comprising heparin.
Claim 56
Dependent Claim
33 words
The occlusion device of claim 48 wherein the first and second sheets are treated with heparin by plasma etching a surface of the sheets and dipping the sheets in a solution comprising heparin.
Claim 57
Dependent Claim
15 words
The occlusion device of claim 48 wherein the heparin chemically bonds to the polyvinyl alcohol.
Claim 58
Dependent Claim
20 words
The occlusion device of claim 48 wherein the center strut has an axial length of less than about 20 millimeters.
Claim 59
Dependent Claim
18 words
The occlusion device of claim 48 wherein the multiple wire strands are pre-shaped and heat treated nickel-titanium wires.
Claim 60
Dependent Claim
19 words
The occlusion device of claim 48 wherein the support frames are formed of cables formed by multiple stranded wires.
Claim 61
Dependent Claim
16 words
The occlusion device of claim 48 wherein the support frames are a mesh of stranded wire.
Claim 62
Dependent Claim
16 words
The occlusion device of claim 48 wherein the center strut is a mesh of stranded wire.
Claim 63
Dependent Claim
96 words
An occlusion device, the device comprising: a first collapsible support frame; a second collapsible support frame, the second collapsible support frame being spaced from and connected to the first collapsible support frame; a first sheet attached to the first collapsible support frame, wherein the first sheet is formed from a foam mixture comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol; and a second polyvinyl alcohol sheet attached to the second collapsible support frame, wherein the second sheet is formed from a foam comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol.
Claim 64
Dependent Claim
96 words
An occlusion device, the device comprising: a first collapsible support frame; a second collapsible support frame, the second collapsible support frame being spaced from and connected to the first collapsible support frame; a first sheet attached to the first collapsible support frame, wherein the first sheet is formed from a foam mixture comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol; and a second polyvinyl alcohol sheet attached to the second collapsible support frame, wherein the second sheet is formed from a foam comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol.
Claim 65
Dependent Claim
28 words
The occlusion device in claim 58 wherein the first and second sheets are polyvinyl alcohol foam having a thickness of between about 0.2 millimeter and about 2.0 millimeters.
Claim 66
Dependent Claim
25 words
The occlusion device of claim 58 wherein the first and second sheets are treated with heparin by dipping the sheets in a solution comprising heparin.
Claim 67
Dependent Claim
33 words
The occlusion device of claim 58 wherein the first and second sheets are treated with heparin by plasma etching a surface of the sheets and dipping the sheets in a solution comprising heparin.
Claim 68
Dependent Claim
21 words
The occlusion device of claim 58 wherein the heparin is chemically bonded to the polyvinyl alcohol during manufacturing of the sheets.
Claim 69
Dependent Claim
24 words
The occlusion device in claim 58 wherein the first and second support frames are pre-shaped and heat treated stranded wire formed of nickel-titanium wires.
Claim 70
Dependent Claim
20 words
The occlusion device of claim 58 wherein the center section has an axial length of less than about 20 millimeters.
Claim 71
Dependent Claim
19 words
The occlusion device of claim 58 wherein the support frames are formed by cables formed by multiple stranded wires.
Claim 72
Dependent Claim
16 words
The occlusion device of claim 58 wherein the support frames are a mesh of stranded wire.
Claim 73
Dependent Claim
16 words
The occlusion device of claim 58 wherein the center section is a mesh of stranded wire.
Claim 74
Dependent Claim
42 words
An occlusion device, the device comprising: a support structure; and a polyvinyl alcohol foam occlusion member attached to the support structure wherein the occlusion member is formed from a foam mixture comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol.
Claim 75
Dependent Claim
42 words
An occlusion device, the device comprising: a support structure; and a polyvinyl alcohol foam occlusion member attached to the support structure wherein the occlusion member is formed from a foam mixture comprising polyvinyl alcohol and heparin chemically bonded to the polyvinyl alcohol.
Claim 76
Dependent Claim
24 words
The occlusion device of claim 68 wherein the foam member is treated with heparin by dipping the foam member in a solution comprising heparin.
Claim 77
Dependent Claim
19 words
The occlusion device of claim 68 wherein the heparin is bonded to the foam when the member is manufactured.
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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) | 2005-04-29 | 2005-10-29 | 2006-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-04-29 | 2009-10-29 | 2010-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-04-29 | 2013-10-29 | 2014-04-30 | $7700.00 | Window Closed / Lapsed |