Implant introducer with helical trigger wire
AssigneeCook Medical Technologies LLC
InventorJeffry Scott Melsheimer
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Abstract
A delivery device for deploying an expandable, endoluminal prosthesis within a body vessel is disclosed. The delivery device may include one or more stent graft retention scaffolds having a plurality of arches, each arch encompassing an aperture forming a helical path and a trigger wire passing through at least two of the apertures following the helical path, wherein at least a portion of the stent graft is retained in a compressed configuration on the delivery device by the retention scaffold and trigger wire.
Claims20
An endovascular delivery device, comprising:
- a central catheter;
- a stent graft circumferentially located about a portion of the central catheter, the stent graft comprising a tubular body of a biocompatible material with a lumen therethrough;
- a retention scaffold comprising a plurality of arches, each arch encompassing an aperture forming a helical path;
- a trigger wire passing through at least two of the apertures following the helical path, wherein at least a portion of the stent graft is retained in a compressed configuration on the delivery device by the retention scaffold and the trigger wire.
An endovascular delivery device, comprising:
- a central catheter;
- a shaft;
- a stent graft circumferentially located about a portion of the central catheter, the stent graft comprising a tubular body of a biocompatible material with a lumen therethrough;
- a retention scaffold comprising a proximal end and a piloting end and a plurality of arches, each arch encompassing an aperture forming a helical path, wherein the piloting end is configured to form an interlock with the shaft for rotating or longitudinally displacing a portion of the retention scaffold,
- a trigger wire passing through at least two of the apertures following the helical path, wherein the stent graft is retained in a compressed configuration on the delivery device by the retention scaffold and the trigger wire.
A method of deploying a stent graft in a patient, comprising:
- providing an endovascular delivery device, comprising:
- a central catheter;
- a stent graft circumferentially located about the central catheter comprising a tubular body of a biocompatible material with a lumen therethrough;
- a retention scaffold comprising a plurality of arches, each arch encompassing an aperture forming a helical path;
- a trigger wire passing through at least two of the apertures in the helical path, wherein the stent graft is retained in a compressed configuration on the delivery device by the retention scaffold and the trigger wire;
- and
- withdrawing the trigger wire through the apertures.
Dependencies are inferred from the claim text.