Aligning device for stent graft delivery system

摘要

A prosthesis implanting system includes a delivery sheath for receiving the prosthesis and delivering it to the treatment site and an alignment device on the sheath visible to a user for indicating a rotational and an axial position of the sheath with respect to the treatment site. The alignment device is part of a delivery assembly slidably disposed in a handle. The delivery assembly has a hollow first lumen for slidably receiving therein a guidewire, a hollow second lumen slidably disposed about the first lumen, a hollow third lumen slidably disposed about the second lumen and having a distal end at which the sheath is connected and is disposed about the first and second lumen. The sheath holds the prosthesis therein prior to implantation and the alignment device is connected to the sheath. A relatively stiff outer lumen is slidably disposed about the third lumen and sheath.

主权项

1. A system for implanting a prosthesis, comprising:
a) a prosthesis that is asymmetric about a major longitudinal axis; b) a prosthesis delivery sheath in direct contact with and constraining the prosthesis for delivering the prosthesis to a treatment site; and c) an alignment device connected to said prosthesis delivery sheath, each component of the alignment device appearing asymmetric relative to a respective axis running through a center of the component and transverse to the major longitudinal axis when viewed along the transverse axis, each component also being asymmetric relative to an axis parallel to a major longitudinal axis of the prosthesis delivery sheath, wherein said alignment device is visible to a user, thereby indicating a rotational and an axial position of the sheath with respect to the treatment site and said alignment device is a pair of markers, said markers having a contact diameter and being symmetrical about said contact diameter on opposing sides of said contact diameter.