Delivery system and method for self-centering a Proximal end of a stent graft
First Claim
1. A method for implanting a prosthesis centrally within a curved lumen, which comprises:
- loading a prosthesis into a delivery sheath, the prosthesis having a proximal end and the sheath having a distal end;
advancing the sheath in a patient towards the curved lumen to place at least the proximal end within the curved lumen; and
centering at least one of;
the proximal end of the prosthesis; and
the distal end of the sheath, within the curved lumen.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for implanting a prosthesis centrally within a curved lumen includes loading a prosthesis into a delivery sheath, advancing the sheath in a patient towards the curved lumen to place at least the proximal end of the prosthesis within the curved lumen, and centering the proximal end of the prosthesis and/or the distal end of the sheath within the curved lumen. In a first advancing step, the outer catheter containing the inner sheath is advanced together towards the curved lumen to a location proximal of the curved lumen and, in a second advancing step, the inner sheath containing the prosthesis is advanced into the curved lumen to place at least the proximal end within the curved lumen while the outer catheter substantially remains at the location. After centering, the proximal end of the prosthesis is deployed centered within the curved lumen.
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Citations
25 Claims
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1. A method for implanting a prosthesis centrally within a curved lumen, which comprises:
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loading a prosthesis into a delivery sheath, the prosthesis having a proximal end and the sheath having a distal end;
advancing the sheath in a patient towards the curved lumen to place at least the proximal end within the curved lumen; and
centering at least one of;
the proximal end of the prosthesis; and
the distal end of the sheath, within the curved lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for centrally implanting a prosthesis, which comprises:
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placing at least a proximal end of a prosthesis in a curved lumen of a patient; and
centering the proximal end of the prosthesis within the curved lumen before implanting the prosthesis therein.
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24. A method for implanting a prosthesis centrally within a curved lumen, which comprises:
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loading a prosthesis into a delivery sheath, the prosthesis having a proximal end and the sheath having a distal end;
in a first advancing step, advancing the outer catheter containing the inner sheath together towards the curved lumen to a location proximal of the curved lumen; and
in a second advancing step, advancing the inner sheath containing the prosthesis into the curved lumen to place at least the proximal end within the curved lumen while the outer catheter substantially remains at the location;
centering at least one of;
the proximal end of the prosthesis; and
the distal end of the sheath, within the curved lumen; and
after carrying out the centering step, deploying the proximal end of the prosthesis centered within the curved lumen.
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25. A method of implanting a prosthesis in a patient at a treatment site, which comprises:
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providing a prosthesis delivery system with a relatively flexible inner sheath and a relatively stiff outer sheath;
loading a prosthesis inside the inner sheath;
loading the inner sheath containing the prosthesis within the outer sheath;
advancing the outer sheath in a patient towards the treatment site up to a given position at a distance from the treatment site;
while retaining the outer sheath in the given position;
advancing the inner sheath out from the outer sheath to the treatment site to place at least a proximal end of inner sheath within the treatment site; and
centering at least one of;
the proximal end of the prosthesis; and
a distal end of the inner sheath, within the curved lumen;
retracting the inner sheath to at least partially implant the prosthesis at the treatment site; and
upon completion of prosthesis implantation, retracting both of the inner and outer sheaths from the patient.
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Specification