Method for aligning a stent graft delivery system
First Claim
1. A method of implanting a prosthesis in a patient at a treatment site, comprising the steps of:
- (a) loading a prosthesis into a prosthesis delivery sheath, the prosthesis delivery sheath including an alignment device having a pair of hemispherical-shaped radiopaque markers, each marker having a contact diameter and being symmetrical about the contact diameter on opposing sides of the contact diameter, wherein the hemispherical shaped radiopaque markers are on opposite sides of the prosthesis delivery sheath along respective longitudinal axes of the prosthesis delivery sheath; and
(b) advancing the prosthesis delivery sheath in a patient to the treatment site, whereby the hemispherical-shaped radiopaque markers align to form a complete circular shape when the markers are viewed along an axis orthogonal to a major axis of the treatment site where the radiopaque markers are to be located.
1 Assignment
0 Petitions
Accused Products
Abstract
A method of implanting a prosthesis in a patient at a treatment site includes the steps of providing a prosthesis delivery sheath with an alignment device, loading a prosthesis into the sheath, advancing the sheath in a patient up to the treatment site, and viewing at least one of a rotational and an axial position of the alignment device at the treatment site and, if the sheath is not in a desired position, moving the sheath to the desired position based upon the position of the alignment device. The alignment device can be a pair of markers on opposing sides of a longitudinal axis of the sheath such that, when viewed from a side of the sheath, the pair forms a given shape that communicates to a user a direction in which the sheath needs to rotate minimally to align the markers and form the given shape.
-
Citations
17 Claims
-
1. A method of implanting a prosthesis in a patient at a treatment site, comprising the steps of:
-
(a) loading a prosthesis into a prosthesis delivery sheath, the prosthesis delivery sheath including an alignment device having a pair of hemispherical-shaped radiopaque markers, each marker having a contact diameter and being symmetrical about the contact diameter on opposing sides of the contact diameter, wherein the hemispherical shaped radiopaque markers are on opposite sides of the prosthesis delivery sheath along respective longitudinal axes of the prosthesis delivery sheath; and (b) advancing the prosthesis delivery sheath in a patient to the treatment site, whereby the hemispherical-shaped radiopaque markers align to form a complete circular shape when the markers are viewed along an axis orthogonal to a major axis of the treatment site where the radiopaque markers are to be located. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method of implanting a prosthesis in a patient at a treatment site, comprising the steps of:
-
(a) loading a prosthesis into a prosthesis delivery sheath, the prosthesis delivery sheath including an alignment device having a pair of D-shaped radiopaque markers, each marker having a contact diameter and being symmetrical about the contact diameter on opposing sides of the contact diameter, wherein the D-shaped radiopaque markers are located on opposite sides of the prosthesis delivery sheath along respective longitudinal axes of the prosthesis delivery sheath; and (b) loading a prosthesis into the prosthesis delivery sheath; (c) advancing the prosthesis delivery sheath in a patient to the treatment site, whereby the D-shaped markers align to form a complete ovular shape with the markers when the markers are viewed along an axis orthogonal to a major axis of the treatment site where the radiopaque markers are to be located.
-
-
15. A method of implanting a prosthesis in a patient at a treatment site, comprising the steps of:
-
(a) loading a prosthesis into a prosthesis delivery sheath, the prosthesis delivery sheath including an alignment device having a pair of radiopaque markers, each marker having a first shape and being connected to opposing sides of the prosthesis delivery sheath, each of the first shapes including an alignment segment, and, in a plan view of one of the markers, the alignment segments aligning with one another to, together, define a second shape different from the first shape, wherein each of the radiopaque markers has a shape selected from the group consisting of a hemisphere, a D-shape, a triangle, and an isosceles triangle; and (b) advancing the prosthesis delivery sheath in a patient to the treatment site, whereby the radiopaque markers align to substantially form the second shape when viewed along an axis orthogonal to a major axis of the treatment site where the radiopaque markers are to be located.
-
-
16. A method of implanting a prosthesis in a patient at a treatment site, comprising the steps of:
-
a) loading a prosthesis into a prosthesis delivery sheath, the prosthesis delivery sheath including an alignment device having a pair of radiopaque markers on opposing sides of a longitudinal axis of the prosthesis delivery sheath, wherein the radiopaque markers each have a first shape selected from the group consisting of a hemispherical shape, a D-shape, and a triangular shape when viewed along an axis orthogonal to a major axis of the prosthesis delivery sheath; b) advancing the prosthesis delivery sheath in the patient to the treatment site in a blood vessel; and c) rotating the prosthesis delivery sheath until the markers substantially form a second shape when viewed along an axis orthogonal to a major axis of the treatment site where the radiopaque markers are to be located, and wherein the markers form the second shape that is a composite of two of the first shapes along complimentary sides of the first shape when the prosthesis is aligned in the blood vessel.
-
-
17. A method of implanting a prosthesis in a patient at a treatment site, comprising the steps of:
-
a) loading a prosthesis into a prosthesis delivery sheath, the prosthesis delivery sheath including an alignment device having a pair of radiopaque markers on opposing sides of a longitudinal axis of the prosthesis delivery sheath, wherein the radiopaque markers have a shape selected from the group consisting of;
a circle, a diamond, and an oval when viewed along an axis orthogonal to a major axis of the prosthesis delivery sheath;b) advancing the prosthesis delivery sheath in the patient to the treatment site in a blood vessel; and c) rotating the prosthesis delivery sheath until the markers substantially form the shape when viewed along an axis orthogonal to a major axis of the treatment site where the radiopaque markers are to be located, and wherein the markers form the shape when the prosthesis is aligned in the blood vessel.
-
Specification