US 2025/0049558 A1 · CONSTRAINT ARRANGEMENT FOR A STENT-GRAFT LOADED ONTO A DELIVERY SYSTEM

Abstract

A constraint arrangement for a stent-graft loaded onto a delivery system having a suture extending circumferentially around a surface of a graft from a first fixed end fixed to a stent-graft to a positionable region, and through the graft at a first constraining perforation into the lumen and returning out of the lumen to the surface of the graft at a second constraining perforation to a second fixed end fixed to the stent-graft, thereby forming a loop of the suture within a lumen of the graft, the loop wrapped circumferentially around a cannula such that a pair of legs of the loop hold the positionable region with respect to the cannula, wherein a bight of the loop extends through a gap between the legs and wherein the release wire extends through the bight thereby capturing the bight and releaseably securing the loop around the cannula.

Claims20

Dependent claims

A constraint arrangement for a stent-graft loaded onto a delivery system, the stent-graft having a graft defining an elongate lumen, a plurality of stents and at least one positionable region adjacent to a feature, the delivery system having a cannula and a release wire, the constraint arrangement comprising:

at least one suture extending at least partially circumferentially around a surface of the graft to the positionable region, and through the graft at a first perforation into the lumen and returning out of the lumen to the surface of the graft at a second perforation, thereby forming a loop portion of the at least one suture within the lumen,
wherein the loop portion is wrapped circumferentially around the cannula such that a pair of legs of the loop hold the positionable region with respect to the cannula, and
wherein a bight of the loop portion extends through a gap between the legs and wherein the release wire extends through the bight thereby capturing the bight and releasably securing the loop portion around the cannula.

a first suture extending circumferentially around a surface of the graft from a first fixed end fixed to the stent-graft to the positionable region, and through the graft and into the lumen and returning out of the lumen to the surface of the graft to a second fixed end fixed to the stent-graft, thereby forming a first loop portion of the first suture within the lumen, the second fixed end being longitudinally spaced from the first fixed end, the first suture being stitched in and out of the graft between the first and second fixed ends along a first path adjacent to a boundary of the feature,
a second suture extending circumferentially around the surface of the graft from a third fixed end fixed to the stent-graft to the positionable region, and into the lumen and returning out of the lumen to the surface of the graft to a fourth fixed end fixed to the stent-graft, thereby forming a second loop portion of the second suture within the lumen, the fourth fixed end being longitudinally spaced from the third fixed end, the second suture being stitched in and out of the graft between the third and fourth fixed ends along a second path adjacent to a boundary of the feature,
wherein the release wire releasably secures the first loop portion and the second loop portion around the cannula to hold the positionable region with respect to the cannula.

Dependencies are inferred from the claim text.

Constraint arrangement for a stent-graft loaded onto a delivery system

Life of this patent

Constraint arrangement for a stent-graft loaded onto a delivery system

Life of this patent

Abstract

Claims20