Occlusion device with non-thrombogenic properties
First Claim
Patent Images
1. 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.
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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.
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Citations
70 Claims
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1. An occlusion device, the device comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An occlusion device for the closure of a physical anomaly, the device comprising:
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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. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An occlusion device, the device comprising:
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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. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. An occlusion device, the device comprising:
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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. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. An occlusion device for the closure of a physical anomaly, the occlusion device comprising:
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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. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57)
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58. An occlusion device, the device comprising:
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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. - View Dependent Claims (59, 60, 61, 62, 63, 64, 65, 66, 67)
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68. An occlusion device, the device comprising:
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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. - View Dependent Claims (69, 70)
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Specification