EMBOLIC PROTECTION DEVICE WITH MAXIMIZED FLOW-THROUGH
First Claim
1. An embolic protection device for capturing emboli during treatment of a lesion in a blood vessel, the device comprising:
- a plurality of struts having a predetermined shape and being configured to move between an expanded state for engagement with the blood vessel and a collapsed state for filter retrieval and delivery; and
a filter portion circumferentially attached to the struts having a proximal end and a distal end;
the filter portion extending freely from the proximal end to a closed distal end;
wherein the filter portion forms at least one annulus chamber in the expanded state with the closed distal end of the chamber being not coincident with the center longitudinal axis of the blood vessel;
wherein the filter portion is configured in the expanded state to allow blood to flow there through and to capture emboli in the annulus chamber.
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Accused Products
Abstract
An embolic protection device for capturing emboli during treatment of a lesion in a blood vessel is presented. This embolic protection device generally comprises a plurality of struts having a predetermined shape and being configured to move between an expanded state for engagement with the blood vessel and a collapsed state for filter retrieval and delivery and a filter portion circumferentially attached to the struts having a proximal end and a distal end; the filter portion extending freely from the proximal end to a closed distal end. The filter portion forms at least one annulus chamber in the expanded state with the closed distal end of each chamber being not coincident to the center longitudinal axis of the blood vessel in order capture emboli in the chambers and to reduce any overall restriction of blood flow through the filter portion.
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Citations
20 Claims
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1. An embolic protection device for capturing emboli during treatment of a lesion in a blood vessel, the device comprising:
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a plurality of struts having a predetermined shape and being configured to move between an expanded state for engagement with the blood vessel and a collapsed state for filter retrieval and delivery; and a filter portion circumferentially attached to the struts having a proximal end and a distal end;
the filter portion extending freely from the proximal end to a closed distal end;wherein the filter portion forms at least one annulus chamber in the expanded state with the closed distal end of the chamber being not coincident with the center longitudinal axis of the blood vessel; wherein the filter portion is configured in the expanded state to allow blood to flow there through and to capture emboli in the annulus chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for embolic protection during treatment of a stenotic lesion in a blood vessel, the method comprising the steps of:
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introducing a catheter into the blood vessel; placing the embolic protection device in the catheter in a collapsed state; deploying an embolic protection device in a collapsed state into the blood vessel past the lesion and causing the device to move from the collapsed state to an expanded state in order to capture emboli during treatment, the device comprising; a plurality of struts having a predetermined shape and being configured to move between an expanded state for engagement with the blood vessel and a collapsed state for filter retrieval and delivery; a core wire slideably received by a spiral section formed by the struts at their proximal end; and a filter portion circumferentially attached to the struts having a proximal end and a distal end;
the filter portion extending freely from the proximal end to a closed distal end; and
forming at least one annulus chamber in the expanded state with the closed distal end being not coincident to the center longitudinal axis of the blood vessel; andtreating the stenotic lesion. - View Dependent Claims (10, 11, 12, 13)
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14. An assembly for removing emboli from a body vessel, the assembly comprising:
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an embolic protection device including a plurality of struts having a predetermined shape and being configured to move between an expanded state for engagement with the body vessel and a collapsed state for filter retrieval and delivery; and
a filter portion circumferentially attached to the struts having a proximal end and a distal end;
the filter portion extending freely from the proximal end to a closed distal end and forming at least one annulus chamber in the expanded state with the closed distal end of the chamber being not coincident to the center longitudinal axis of the body vessel; anda balloon catheter having a tubular body portion and an expandable balloon attached to and in fluid communication with the tubular body portion;
the balloon catheter facilitating delivery of the embolic protection device in the collapsed state to a position distal to a lesion in the body vessel;wherein the embolic protection device is configured in the expanded state to allow blood to flow there through and to capture emboli in the annulus chamber of the filter portion. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification