Method and apparatus for emboli containment
First Claim
1. A method of protecting a patient from embolization during a percutaneous procedure on a vessel, comprising the steps of:
- providing a guidewire having proximal and distal ends, a proximal and a distal region, an expandable filter associated with the distal region, and a removable sheath which covers the expandable filter and is slidable over the guidewire;
introducing the distal end of the guidewire into the patient'"'"'s vessel with the sheath covering the expandable filter, and positioning the filter downstream of a region of interest, wherein the sheath and guidewire cross the region of interest;
sliding the sheath toward the proximal end of the guidewire and removing the sheath from the vessel, wherein the expandable filter is uncovered;
deploying the filter;
advancing over the guidewire a stent-deployment catheter to the region of interest; and
expanding the stent at the region of interest, wherein embolic material is generated and captured before the expandable filter is removed from the patient'"'"'s vessel.
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Accused Products
Abstract
Disclosed herein is a catheter for use in an emboli containment system. In one embodiment, the catheter has a tubular body with a metallic braid construction. Two lumens extend through the tubular body, the lumen being in a side-by-side configuration. One of the lumens functions as an inflation lumen, and is in fluid communication with an inflatable balloon mounted on the distal end of the catheter. The second lumen is adapted to receive other therapeutic catheters which comprise the emboli containment system. In another embodiment, apparatus is provided for treatment of a stenosis in a lumen in a blood-carrying vessel comprising a main catheter and a therapeutic catheter. The main catheter comprises a first flexible elongate tubular member having proximal and distal extremities. A sealing element is carried on the distal extremity of the first flexible elongate tubular member. The first flexible elongate tubular member has a main lumen therein extending from the proximal extremity to the distal extremity and exits through the distal extremity. An adapter is mounted on the proximal extremity of the first flexible elongate tubular member. The therapeutic catheter comprises a second flexible elongate tubular member having proximal and distal extremities. An element for performing work is mounted on the distal extremity of the second flexible elongate tubular member. An adapter is mounted on the proximal extremity of the second flexible elongate tubular member. The second flexible elongate tubular member is slidably mounted in the main lumen of the first elongate tubular member. A mechanism is carried by the first flexible elongate tubular member for causing the sealing element to form an occlusion in the vessel proximal of the stenosis to provide a working space distal of the sealing element. A mechanism is coupled to the attachment of the therapeutic catheter for causing operation of the element for performing work in the working space adjacent the stenosis.
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Citations
24 Claims
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1. A method of protecting a patient from embolization during a percutaneous procedure on a vessel, comprising the steps of:
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providing a guidewire having proximal and distal ends, a proximal and a distal region, an expandable filter associated with the distal region, and a removable sheath which covers the expandable filter and is slidable over the guidewire;
introducing the distal end of the guidewire into the patient'"'"'s vessel with the sheath covering the expandable filter, and positioning the filter downstream of a region of interest, wherein the sheath and guidewire cross the region of interest;
sliding the sheath toward the proximal end of the guidewire and removing the sheath from the vessel, wherein the expandable filter is uncovered;
deploying the filter;
advancing over the guidewire a stent-deployment catheter to the region of interest; and
expanding the stent at the region of interest, wherein embolic material is generated and captured before the expandable filter is removed from the patient'"'"'s vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A percutaneous system having filter and stent deployment capabilities, comprising:
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a guidewire having proximal and distal ends, a proximal and distal region, and an expandable filter associated with the distal region;
a sheath which is shaped to receive the guidewire and retain the filter in a contracted condition, and to slidably release the filter to an expanded condition when the sheath moves toward the proximal end of the guide wire;
a catheter having a proximal and a distal end, a proximal and a distal region, and a lumen which slidably receives the guidewire; and
an expandable stent disposed about the distal region of the catheter, the stent having a first diameter which permits intraluminal delivery of the stent into a body passageway and which places the stent in close proximity to the catheter, and having a second expanded diameter adapted to substantially engage a wall of the body passageway, wherein, during use, the guidewire is positioned across a region of interest, the filter is expanded, and the stent is deployed within the region of interest and remains in place after removal of the catheter from the vessel. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification