Total occlusion guidewire device
First Claim
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1. A guidewire for crossing an occluded vessel lumen, said guidewire comprising:
- a flexible wire having an outer diameter, an inner diameter, a proximal end and a distal end;
a generally solid core wire having an outer diameter, a proximal end and a distal end, said distal end of said core wire slidably insertable into said proximal end of said flexible wire; and
a spreader attached to said distal end of said flexible wire, said spreader comprising means for incrementally opening the occluded vessel lumen, said spreader having a proximal end and a distal end, a smaller first diameter for insertion into said lumen, and a second larger diameter for expanding said lumen, and a second maintaining said smaller first diameter when said core wire is slidably inserted through said flexible wire and said spreader, until said distal end of said core wire is substantially in contact with said distal end of said spreader, and said spreader having said larger second diameter when said spreader and said flexible wire are slidably advanced over said core wire until said distal end of said core wire is substantially in contact with said proximal end of said spreader.
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Abstract
A guidewire comprising a spreader or at least one centering device which may be used to open occluded vessels or other biological passages, especially chronic total occlusions. The guidewire may be used to either open the lumen or to center a boring device within the lumen, so that the chronic total occlusion can be crossed, and an interventional procedure can then be performed.
141 Citations
22 Claims
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1. A guidewire for crossing an occluded vessel lumen, said guidewire comprising:
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a flexible wire having an outer diameter, an inner diameter, a proximal end and a distal end;
a generally solid core wire having an outer diameter, a proximal end and a distal end, said distal end of said core wire slidably insertable into said proximal end of said flexible wire; and
a spreader attached to said distal end of said flexible wire, said spreader comprising means for incrementally opening the occluded vessel lumen, said spreader having a proximal end and a distal end, a smaller first diameter for insertion into said lumen, and a second larger diameter for expanding said lumen, and a second maintaining said smaller first diameter when said core wire is slidably inserted through said flexible wire and said spreader, until said distal end of said core wire is substantially in contact with said distal end of said spreader, and said spreader having said larger second diameter when said spreader and said flexible wire are slidably advanced over said core wire until said distal end of said core wire is substantially in contact with said proximal end of said spreader. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A guidewire for crossing an occluded vessel lumen, said guidewire comprising:
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a flexible wire having an outer diameter, an inner diameter, a proximal end and a distal end;
a spreader attached to said distal end of said flexible wire, said spreader comprising means for incrementally opening the occluded vessel lumen, said spreader having a proximal end and a distal end, a plurality of struts extending therebetween, a smaller first diameter for insertion into said lumen, and a second larger diameter for expanding said lumen; and
a generally solid core wire having an outer diameter, a proximal end and a distal end, a longitudinal axis therebetween, with said distal end of said solid core wire slidably insertable into said proximal end of said flexible wire, and said distal end of said core wire permanently attached to said distal end of said spreader, wherein said spreader maintaining said smaller first diameter when said solid core wire is slidably advanced through said flexible wire and said spreader and said struts assume a position substantially parallel to said core wire, and said spreader having said larger second diameter when said flexible wire and said spreader are slidably advanced over said core until said struts assume a position substantially removed from said longitudinal axis of said core wire. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification
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Current AssigneeCardinal Health Switzerland 515 GmbH (Cardinal Health, Inc.)
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Original AssigneeCordis Corporation (Cardinal Health, Inc.)
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InventorsHojeibane, Hikmat, Majercak, David C., Duerig, Thomas W.
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Primary Examiner(s)Calvert, John J.
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Assistant Examiner(s)MORAN, KATHERINE M
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Application NumberUS09/800,351Publication NumberTime in Patent Office833 DaysField of Search606/198, 606/200, 606/127, 600/434, 600/585US Class Current606/198CPC Class CodesA61B 17/22 Implements for squeezing-of...A61B 17/3207 Atherectomy devices working...A61B 17/320758 with a rotating cutting ins...A61B 2017/22042 Details of the tip of the g...A61B 2017/22044 with a pointed tipA61B 2017/22068 CenteringA61B 2017/22069 Immobilising; StabilisingA61B 2017/320004 abrasiveA61M 2025/09183 having tools at the distal tipA61M 25/09 Guide wiresA61M 25/0905 extendable, e.g. mechanisms...
