| 主权项 |
1. An apex capture device, comprising:
a) a proximal apex capture portion, including
i. a nose, wherein the nose defines at least one radial restraint that is substantially parallel to a major axis of the proximal capture portion, andii. a plurality of tines extending distally from the nose, the tines radially distributed about the major axis radial to a most proximal radial restraint and substantially parallel to the major axis; b) a distal apex capture portion defining slots distributed radially about the major axis, the slots mateable with the tines by relative movement of the proximal and distal apex capture portions along the major axis; c) a plurality of bosses extending radially from the major axis between the nose and the distal apex capture portion and aligned with the slots along the major axis in non-interfering relation with movement of the tines into mating relation with the slots; d) an elongate member to which the distal apex capture portion is fixed, the elongate member extending through the proximal apex capture portion and the plurality of bosses; and e) a lumen to which the proximal apex capture portion is fixed, through which the elongate member extends, whereby movement of the lumen causes movement of the proximal apex capture portion along the major axis between a first position, in which the tines are mated with the slots and overlie the bosses, and a second position, in which the tines are not mated with the slots and do not overlie the bosses. |
