Percutaneous mechanical fragmentation catheter system
DCFirst Claim
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1. A method for fragmenting thrombotic material in a vascular conduit comprising the steps of:
- (a) introducing a fragmentation catheter in the vascular conduit, wherein the fragmentation catheter comprises an expandable distal end that automatically expands to conform to the shape and diameter of the inner lumen of the vascular conduit upon deployment of the expandable distal end;
(b) deploying the expandable distal end;
(c) rotating the expandable distal end at a speed capable of homogenizing thrombotic material; and
(d) withdrawing the rotating expandable distal end through thrombotic material in the vascular conduit.
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Abstract
A percutaneous thrombolytic device, also referred to herein as a percutaneous mechanical fragmentation catheter system, that includes a wire cage or basket attached to a rotational drive motor. The fragmentation basket, ensheathed in an outer catheter, is introduced into the clotted graft or vessel via an introducer sheath. When deployed, the basket will automatically conform to the inner dimensions of the vessel lumen. The rotating basket is slowly withdrawn through the clotted graft, mechanically fragmenting the clot. The fragmented, homogenized debris can be flushed into the venous system or aspirated.
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52 Claims
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1. A method for fragmenting thrombotic material in a vascular conduit comprising the steps of:
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(a) introducing a fragmentation catheter in the vascular conduit, wherein the fragmentation catheter comprises an expandable distal end that automatically expands to conform to the shape and diameter of the inner lumen of the vascular conduit upon deployment of the expandable distal end; (b) deploying the expandable distal end; (c) rotating the expandable distal end at a speed capable of homogenizing thrombotic material; and (d) withdrawing the rotating expandable distal end through thrombotic material in the vascular conduit. - 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 method for fragmenting thrombotic material in a vascular conduit comprising the steps of:
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(a) introducing a fragmentation catheter in the vascular conduit, wherein the fragmentation catheter comprises an expandable distal end that automatically expands to conform to the shape and diameter of the inner lumen of the vascular conduit upon deployment of the expandable distal end; (b) deploying the expandable distal end; (c) rotating the expandable distal end at a speed capable of homogenizing thrombotic material; and (d) advancing the rotating expandable distal end through thrombotic material in the vascular conduit. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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Specification