Patent ID: 11896506
Assignee: BOSTON SCIENTIFIC SCIMED, INC.
Field: Medical technology (Instruments)
Classification: CPC A  B | IPC A  B

Claim 8:
9. A mandrel for forming a stent with a tapered outer profile and anti-migration features, the mandrel comprising:
a mandrel body including:
a first stent shaping segment having a first diameter and a first threaded aperture extending within the first stent shaping segment along a longitudinal axis of the mandrel body;
a second stent shaping segment having a second diameter less than the first diameter and a second threaded aperture extending within the second stent shaping segment along the longitudinal axis of the mandrel body;
a tapered segment disposed between the first stent shaping segment and the second stent shaping segment, the tapered segment including a tapered surface surrounding the longitudinal axis; and
a plurality of apertures extending through only the tapered surface and radially disposed about the longitudinal axis of the mandrel body;

a mandrel cap releasably securable to the second stent shaping segment, the mandrel cap including a third stent shaping segment having a third diameter greater than the second diameter;
a plurality of movable pins, each of the plurality of movable pins configured to extend radially outwardly of the longitudinal axis from one of the plurality of apertures at an acute angle relative to the longitudinal axis of the mandrel body, the plurality of movable pins configured to form the anti-migration features in the stent; and
an actuation element including:
a tapered end configured to engage the plurality of movable pins; and
a threaded body configured to threadingly engage the first threaded aperture;

wherein rotating the actuation element causes the actuation element to advance along the longitudinal axis of the mandrel body into the first stent shaping segment such that the tapered end drives the plurality of movable pins in an outward direction.