Apparatus and method for making a spider occlusion device

An apparatus for making a vascular occlusion device for occluding a body cavity, the apparatus comprising:

• a frame including a hub extending along a longitudinal axis from a proximal end to a distal end, a plurality of arcuate legs being attached to the hub and extending distally to a distal leg portion, the arcuate legs being flexible and having inner surfaces defining an inner profile extending radially away from the longitudinal axis in an unconstrained state;
• a mandrel having an outer surface and a biocompatible material being releasably disposed thereon, the outer surface corresponding to the inner profile of the arcuate legs;
• and
• the inner surfaces of the arcuate legs of the frame being disposed over the outer surface of the mandrel onto the base layer and at least the arcuate legs being attached to the base layer to form a membrane extending along and between each of the arcuate legs.