Atherectomy device having trapping and excising means for removal of plaque from the aorta and other arteries
First Claim
1. A catheter for removing plaque from a blood vessel, comprising:
- a flexible elongate member having an outer surface and a distal region;
expansion means disposed at the elongate member which is expandable between a contracted condition and an enlarged condition;
a filter mesh movable relative to the outer surface and having a first edge and a second edge;
the first edge attached to the expansion means;
the second edge closely associated with the outer surface of the flexible elongate member; and
an atherectomy assembly disposed within the distal region of the elongate member, the atherectomy assembly comprising means for plaque removal and trapping means, wherein during use plaque is trapped and held by the trapping means and excised from a blood vessel by the means for plaque removal.
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Accused Products
Abstract
An arterial catheter system for removing plaque from the aorta and other arteries is disclosed. The system typically includes an elongate catheter member, a filtration apparatus disposed within the distal region, and an atherectomy assembly which includes a mechanism for trapping and holding mobile or fixed plaque and an excising mechanism for removing the plaque. In use, the catheter is positioned so that the atherectomy assembly lies within a region of interest, the filtration apparatus is deployed downstream of the region of interest, the plaque is trapped and held by a snare, vacuum, or other trapping means, and then the excising mechanism is activated to remove the plaque. Methods are also disclosed for removing plaque from the aorta and other arteries.
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Citations
67 Claims
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1. A catheter for removing plaque from a blood vessel, comprising:
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a flexible elongate member having an outer surface and a distal region;
expansion means disposed at the elongate member which is expandable between a contracted condition and an enlarged condition;
a filter mesh movable relative to the outer surface and having a first edge and a second edge;
the first edge attached to the expansion means;
the second edge closely associated with the outer surface of the flexible elongate member; and
an atherectomy assembly disposed within the distal region of the elongate member, the atherectomy assembly comprising means for plaque removal and trapping means, wherein during use plaque is trapped and held by the trapping means and excised from a blood vessel by the means for plaque removal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A catheter for removing plaque from a blood vessel, comprising:
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a flexible elongate member having an outer surface and a distal region;
an inflation seal expandable between a contracted position and an enlarged condition;
an inflation system comprising a first lumen adapted to receive pressurized fluid and a second lumen adapted to evacuate gas, and wherein the inflation seal further includes an entry port in fluid communication with the first lumen of the flexible elongate member, so that When fluid is advanced through the first lumen, the fluid enters the inflation seal and forces gas from the inflation seal through the second lumen, thereby purging the system of gas;
a filter mesh movable relative to the outer surface and having a first edge and a second edge;
the first edge attached to the inflation seal;
the second edge being disposed circumferentially relative to the outer surface of the flexible elongate member; and
an atherectomy assembly disposed within the distal region of the elongate member, the atherectomy assembly comprising means for plaque removal and trapping means, wherein during use plaque is trapped and held by the trapping means and excised from a blood vessel by the means for plaque removal. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A catheter for removing plaque from a blood vessel, comprising:
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a flexible elongate member having an outer surface and a distal region;
expansion means disposed at the elongate member which is expandable between a contracted condition and an enlarged condition;
a filter mesh longitudinally movable relative to the outer surface and having a first edge and a second edge;
the first edge attached to the expansion means;
the second edge being disposed circumferentially relative to the outer surface of the flexible elongate member; and
an atherectomy assembly disposed within the distal region of the elongate member, the atherectomy assembly comprising means for plaque removal and a suction device, wherein during use plaque is trapped and held by the suction device and excised from a blood vessel by the means for plaque removal. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67)
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Specification