Medical device
First Claim
1. A collapsible filter element for a transcatheter embolic protection device, the filter element comprising:
- a collapsible filter body which is movable between a collapsed stored position for movement through a vascular system and an expanded position for extension across a blood vessel such that blood passing through the blood vessel is delivered through the filter element;
a proximal inlet portion of the filter body having one or more inlet openings sized to allow blood and embolic material enter the filter body;
a distal outlet portion of the filter body having a plurality of outlet openings to allow through-passage of blood, but to retain embolic material within the filter body;
the filter element being pre-wrapped in a ordered configuration which can eliminate air emboli in the loading process and the filter body comprising a thin membrane and a hydrophilic coating.
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Abstract
A collapsible filter element (40) for a transcatheter embolic protection device (1). The filter element (40) comprises a collapsible filter body (41) which is movable between a collapsed stored position for movement through a vascular system and an expanded position for extension across a blood vessel such that blood passing through the blood vessel is delivered through the filter element (40). A proximal inlet portion of the filter body (41) has two inlet openings (50) sized to allow blood and embolic material enter the filter body (41), and a distal outlet portion of the filter body (41) has a plurality of small outlet openings (51) to allow through-passage of blood, but to retain embolic material within the filter body (41). The filter body (41) is of an oriented polymeric material.
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Citations
23 Claims
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1. A collapsible filter element for a transcatheter embolic protection device, the filter element comprising:
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a collapsible filter body which is movable between a collapsed stored position for movement through a vascular system and an expanded position for extension across a blood vessel such that blood passing through the blood vessel is delivered through the filter element; a proximal inlet portion of the filter body having one or more inlet openings sized to allow blood and embolic material enter the filter body; a distal outlet portion of the filter body having a plurality of outlet openings to allow through-passage of blood, but to retain embolic material within the filter body; the filter element being pre-wrapped in a ordered configuration which can eliminate air emboli in the loading process and the filter body comprising a thin membrane and a hydrophilic coating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification