Guiding catheter for positioning a medical device within an artery
First Claim
1. A guiding catheter for positioning a medical device within an artery, said guiding catheter comprising:
- a flexible elongate member having an outer surface, a distal region adapted to enter an artery, a proximal region extending outside the artery, a port in the distal region, and a lumen extending from the proximal region to the distal region, and communicating with the port, wherein the lumen is adapted to receive a medical device which can pass through the port to access the lumen of the artery;
an expandable filter disposed within the distal region of the elongate member and proximal the port, the filter being expandable between a contracted condition and an enlarged condition, the filter having a first proximal edge circumferentially in contact with the outer surface of the flexible elongate member, wherein during use plaque disrupted by the medical device is captured by the filter.
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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.
510 Citations
13 Claims
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1. A guiding catheter for positioning a medical device within an artery, said guiding catheter comprising:
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a flexible elongate member having an outer surface, a distal region adapted to enter an artery, a proximal region extending outside the artery, a port in the distal region, and a lumen extending from the proximal region to the distal region, and communicating with the port, wherein the lumen is adapted to receive a medical device which can pass through the port to access the lumen of the artery; an expandable filter disposed within the distal region of the elongate member and proximal the port, the filter being expandable between a contracted condition and an enlarged condition, the filter having a first proximal edge circumferentially in contact with the outer surface of the flexible elongate member, wherein during use plaque disrupted by the medical device is captured by the filter. - View Dependent Claims (2)
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3. A guiding catheter for positioning a medical device within an artery, said guiding catheter comprising:
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a flexible elongate member having an outer surface, a distal region adapted to enter an artery, a proximal region extending outside the artery, a port in the distal region, and a lumen extending from the proximal region to the distal region and communicating with the port, wherein the lumen is adapted to receive a medical device which can pass through the port to access the lumen of the artery; and at least one positioning member disposed within the distal region of the flexible elongate member and proximal the port, wherein during use said positioning member is deployed to stabilize or deflect the elongate member within the vessel lumen. - View Dependent Claims (4, 5, 6, 7, 8, 9)
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10. A method for protecting a patient from embolization during a percutaneous medical procedure, comprising the steps of:
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providing a guiding catheter comprising a flexible elongate member having a lumen extending from a proximal to a distal region of the elongate member, and having an expandable filter within the distal region of the elongate member; advancing the distal region of the guiding catheter to a region of interest within a vessel of the patient; expanding the expandable filter downstream of the region of interest; deploying a medical instrument through the lumen of the elongate member; and performing a percutaneous procedure on the vessel upstream of the filter, wherein embolic material dislodged by the procedure is captured by the filter. - View Dependent Claims (11, 12, 13)
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Specification