Wire-guided recanalization system
First Claim
1. A recanalization catheter assembly for recanalizing a blood vessel having an occlusion in a lumen thereof, the catheter assembly comprising:
- an elongate shaft including a tubular portion having a lumen, a distal opening, and a guide member fixed to and extending distal of the distal opening, the guide member including a guidewire lumen for receiving a guidewire therethrough;
a rotary ablation tool extending distally from the distal opening alongside the guide member; and
a cutting member between the guide member and the rotary ablation tool, the cutting member located proximal of the rotary ablation tool;
wherein the guide member is configured to be advanced over a guidewire in a subintimal space between a first tissue layer and a second tissue layer of a wall of the blood vessel, while the rotary ablation tool is advanced in the lumen of the blood vessel to ablate the occlusion,wherein the cutting member is configured to cut through the first tissue layer between the guide member and the rotary ablation tool as the rotary ablation tool is advanced distally through the occlusion,wherein the rotary ablation tool includes a drive shaft rotatably extending through the lumen of the elongate shaft.
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Accused Products
Abstract
A recanalization catheter assembly for recanalization of an occluded blood vessel is disclosed. The recanalization catheter assembly includes an elongate shaft having a tubular portion, a guide member, and a rotary ablation tool. The tubular portion includes a distal opening, from where the rotary ablation tool extends distally. The guide member extends distal of the distal opening and includes a guidewire lumen to receive a guidewire therethrough. The guide member is configured to advance over the guidewire in a subintimal space between a first tissue layer and a second tissue layer of a wall of the blood vessel, while the rotary ablation tool is advanced in a true lumen of the blood vessel.
112 Citations
17 Claims
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1. A recanalization catheter assembly for recanalizing a blood vessel having an occlusion in a lumen thereof, the catheter assembly comprising:
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an elongate shaft including a tubular portion having a lumen, a distal opening, and a guide member fixed to and extending distal of the distal opening, the guide member including a guidewire lumen for receiving a guidewire therethrough; a rotary ablation tool extending distally from the distal opening alongside the guide member; and a cutting member between the guide member and the rotary ablation tool, the cutting member located proximal of the rotary ablation tool; wherein the guide member is configured to be advanced over a guidewire in a subintimal space between a first tissue layer and a second tissue layer of a wall of the blood vessel, while the rotary ablation tool is advanced in the lumen of the blood vessel to ablate the occlusion, wherein the cutting member is configured to cut through the first tissue layer between the guide member and the rotary ablation tool as the rotary ablation tool is advanced distally through the occlusion, wherein the rotary ablation tool includes a drive shaft rotatably extending through the lumen of the elongate shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A recanalization catheter assembly for recanalizing a blood vessel having an occlusion in a lumen thereof, the catheter assembly comprising:
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an elongate shaft including a tubular portion having a first lumen extending therethrough to a distal opening, a guide member fixed to and extending distal of the distal opening, and a guidewire lumen extending through the guide member for receiving a guidewire therethrough; a rotary ablation tool including a elongate drive shaft rotatably extending through the first lumen to a rotatable cutter extending distally from the distal opening alongside the guide member; and a stationary cutting member secured to the elongate shaft proximal of the rotatable cutter and distal to the distal opening; wherein the guide member is configured to be advanced over a guidewire in a subintimal space between a first tissue layer and a second tissue layer of a wall of the blood vessel, while the rotary ablation tool is advanced in the lumen of the blood vessel to ablate the occlusion; and wherein the cutting member is configured to cut through the first tissue layer between the guide member and the rotary ablation tool as the rotary ablation tool is advanced distally through the occlusion. - View Dependent Claims (14, 15, 16, 17)
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Specification