Vascular and bodily duct treatment devices and methods
First Claim
1. An embolic obstruction retrieval device comprising:
- an elongate self-expandable member expandable from a first delivery position to a second position, in the first delivery position the self-expandable member being in an unexpanded position and having a first nominal diameter and in the second position the self-expandable member being in a radially expanded position and having a second nominal diameter greater than the first nominal diameter for deployment within an embolic obstruction within a vessel of a patient, the self-expandable member comprising a plurality of generally longitudinal undulating elements with adjacent undulating elements being interconnected in a manner to form a plurality of diagonally disposed cell structures, the self-expandable member having a proximal end portion and an elongate cylindrical main body portion, the cell structures in the elongate cylindrical main body portion extending circumferentially around a longitudinal axis of the self-expandable member, the cell structures in the proximal end portion extending less than circumferentially around the longitudinal axis of the self-expandable member, the proximal end portion having a plurality of outer-most cell structures that include outer-most wall segments that form first and second rail segments that each extend from a position at or near a proximal-most end of the self-expandable member to a position at or near the elongate cylindrical main body portion, a proximal-most cell structure of the proximal end portion comprising first and second outer struts that extend distally from a proximal antenna, when the self-expandable member is cut and laid flat on a surface at least a portion of each of the first and second outer struts comprise a straight segment, each of the straight segments being coextensive with the proximal antenna, the proximal-most cell structure being a closed four-sided structure when the self-expandable member is cut and laid flat on a surface, the closed four-sided structure comprising the first outer strut, the second outer strut, a first inner strut and a second inner strut, the first inner strut extending distally from the first outer strut, the second inner strut extending distally from the second outer strut, when the self-expandable member is cut and laid flat on a surface all or substantially all of the first and second inner struts are curvilinear.
2 Assignments
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Accused Products
Abstract
Devices including, but not limited to, a self-expandable member having a proximal end portion and a main body portion. The self-expandable member is movable from a first delivery position to a second placement position, in the first delivery position the expandable member being in an unexpanded position and having a nominal first diameter and in the second position the expandable member being in a radially expanded position and having a second nominal diameter greater than the first nominal diameter for deployment within a vessel or duct of a patient. The expandable member includes a plurality of cell structures with the cell structures in the main body portion extending circumferentially around a longitudinal axis of the expandable member and the cell structures in the proximal end portion extending less than circumferentially around the longitudinal axis of the expandable member to form first and second peripheral rails that vary in width along their lengths.
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Citations
32 Claims
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1. An embolic obstruction retrieval device comprising:
- an elongate self-expandable member expandable from a first delivery position to a second position, in the first delivery position the self-expandable member being in an unexpanded position and having a first nominal diameter and in the second position the self-expandable member being in a radially expanded position and having a second nominal diameter greater than the first nominal diameter for deployment within an embolic obstruction within a vessel of a patient, the self-expandable member comprising a plurality of generally longitudinal undulating elements with adjacent undulating elements being interconnected in a manner to form a plurality of diagonally disposed cell structures, the self-expandable member having a proximal end portion and an elongate cylindrical main body portion, the cell structures in the elongate cylindrical main body portion extending circumferentially around a longitudinal axis of the self-expandable member, the cell structures in the proximal end portion extending less than circumferentially around the longitudinal axis of the self-expandable member, the proximal end portion having a plurality of outer-most cell structures that include outer-most wall segments that form first and second rail segments that each extend from a position at or near a proximal-most end of the self-expandable member to a position at or near the elongate cylindrical main body portion, a proximal-most cell structure of the proximal end portion comprising first and second outer struts that extend distally from a proximal antenna, when the self-expandable member is cut and laid flat on a surface at least a portion of each of the first and second outer struts comprise a straight segment, each of the straight segments being coextensive with the proximal antenna, the proximal-most cell structure being a closed four-sided structure when the self-expandable member is cut and laid flat on a surface, the closed four-sided structure comprising the first outer strut, the second outer strut, a first inner strut and a second inner strut, the first inner strut extending distally from the first outer strut, the second inner strut extending distally from the second outer strut, when the self-expandable member is cut and laid flat on a surface all or substantially all of the first and second inner struts are curvilinear.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An embolic obstruction retrieval device comprising;
- an elongate self-expandable member expandable from a first delivery position to a second position, in the first delivery position the self-expandable member being in an unexpanded position and having a first nominal diameter and in the second position the self-expandable member being in a radially expanded position and having a second nominal diameter greater than the first nominal diameter for deployment within an embolic obstruction within a vessel of a patient, the self-expandable member comprising a plurality of generally longitudinal undulating elements with adjacent undulating elements being interconnected in a manner to form a plurality of diagonally disposed cell structures, the self-expandable member having a proximal end portion and an elongate cylindrical main body portion, the cell structures in the elongate cylindrical main body portion extending circumferentially around a longitudinal axis of the self-expandable member, the cell structures in the proximal end portion extending less than circumferentially around the longitudinal axis of the self-expandable member, a first set of outer-most cell structures in the proximal end portion having outer-most wall segments that form a non-undulating rail segment that extends from a position at or near a proximal-most end of the self-expandable member to a position at or near the elongate cylindrical main body portion, and a second set of outer-most cell structures in the proximal end portion having outer-most wall segments that form an undulating rail segment that extends from a position at or near the proximal-most end of the self-expandable member to a position at or near the elongate cylindrical main body portion.
- View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
Specification