Methods of using non-cylindrical mandrels

摘要

Methods of forming a structure for treating a vessel include providing a mandrel and braiding a plurality of filaments around the mandrel. The mandrel may include a strand having a longitudinal axis and a plurality of balls coupled to the strand along the longitudinal axis. Pairs of the plurality of balls may be spaced along the longitudinal axis. Braiding the plurality of filaments around the mandrel may include, during braiding, forming a plurality of bulbs around the plurality of balls and forming necks between pairs of the plurality of balls. The methods may include, after braiding the plurality of filaments, heat treating (e.g., shape setting) the plurality of filaments on the mandrel. Portions of the braided plurality of filaments may be secured to the mandrel, for example using bangles, wire, and/or adhesive.

主权项

1. A method of forming a structure for treating a vessel, the method comprising:
arranging a plurality of filaments extending from individual carriers of a yarn wheel, at least one of the plurality of filaments being a shape memory filament and at least another of the plurality of filaments being a radiopaque filament; providing a mandrel comprising:
a strand having a longitudinal axis, anda plurality of balls coupled to the strand along the longitudinal axis by at least one of welding and soldering,pairs of the plurality of balls spaced along the longitudinal axis; braiding the plurality of filaments around the mandrel including, during braiding, forming a plurality of bulbs around the plurality of balls, and
forming necks between pairs of the plurality of bulbs; after braiding the plurality of filaments, heat treating the plurality of filaments on the mandrel; and after heat treating the plurality of filaments on the mandrel, removing the plurality of filaments from the mandrel, the structure comprising the heat-treated plurality of filaments including the plurality of bulbs and the necks.