Embolic protection devices
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Accused Products
Abstract
An embolic protection device for use in a blood vessel when an interventional procedure is being performed in a stenosed or occluded region to capture any embolic material which may be created and released into the bloodstream during the procedure. The device includes a filtering assembly having a self-expanding strut assembly and a filter element attached thereto. In one embodiment, the filtering assembly is attached to the distal end of a guidewire and is deployed within the patient'"'"'s vasculature as the guidewire is manipulated into the area of treatment. A restraining sheath placed over the filtering assembly in a coaxial arrangement maintains the filtering assembly in its collapsed position until it is ready to be deployed by the physician. Thereafter, the sheath can be retracted to expose the filtering assembly which will then self-expand within the patient'"'"'s vasculature. Interventional devices can be delivered over the guidewire and any embolic debris created during the interventional procedure and released into the blood stream will enter the filtering assembly and be captured therein. Other embodiments include filtering assemblies attached to an outer tubular member and inner shaft member which apply axial force to the distal ends of the assembly to either expand or contract the struts as needed.
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Citations
127 Claims
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1-100. -100. (canceled)
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101. A filter element for capturing embolic debris in the body fluid flowing in a body vessel, comprising:
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a central filter having an inlet opening and defining a storage reservoir for capturing embolic debris, the central filter having a plurality of openings adapted to allow blood to flow therethrough but capture embolic debris larger than the size of the openings and contain the debris within the reservoir; and
a proximal section integral with the central filter and having a proximal inlet opening, the proximal section adapted to move between collapsed and expanded positions, the proximal section being adapted to expand to contact the wall of the vessel and direct blood and any embolic debris in the blood vessel into the central filter. - View Dependent Claims (102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114)
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115. A filter element for capturing embolic debris in the body fluid flowing in a body vessel, comprising:
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a central filter having an inlet opening and defining a storage reservoir for capturing embolic debris, the central filter having a plurality of openings adapted to allow blood to flow therethrough but capture embolic debris larger than the size of the openings and contain the debris within the reservoir; and
a proximal section integral with the central filter and having a proximal inlet opening, the proximal section adapted to move between a collapsed position and an expanded position; and
at least one barrier member forming part of the proximal section and located near the inlet opening of the central filter, the barrier member being movable with the movement of the proximal section and adapted to at least partially cover the inlet opening of the central filter when the proximal section is placed in its collapsed position. - View Dependent Claims (116, 117, 118)
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119. A filter element for capturing embolic debris in the body fluid flowing in a body vessel, comprising:
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a central filter having an inlet opening and a plurality of openings adapted to allow blood to flow therethrough but capture embolic debris larger than the size of the openings; and
a fluid diverting member located proximate to the inlet opening of the central filter which diverts the fluid flow in the body vessel along the body vessel wall just proximate to the inlet opening when the filter element is placed in the body vessel. - View Dependent Claims (120, 121, 122, 123, 124, 125, 126, 127)
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Specification