Stent with a crush-resistant zone
First Claim
Patent Images
1. An endoluminal prosthesis comprising:
- a stent having a generally tubular body portion, a flareable proximal end portion, and a coupling portion disposed intermediate the body portion and the flareable portion, where the coupling portion is more crush-resistant than the body portion, whereby the coupling portion is more resistant to plastic deformation and bending than the body portion.
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Accused Products
Abstract
An endoluminal prosthesis system for a branched body lumen comprises a branch vessel prosthesis. The branch vessel prosthesis is deployable within a branch vessel body lumen and comprises a stent having a generally tubular body portion, a flareable proximal end portion, and a coupling portion disposed intermediate the body portion and the flareable portion. The coupling portion is more crush-resistant than the body portion. The flareable proximal end may be disposed within a fenestrated stent graft wit with coupling portion disposed in the fenestration of the fenestrated stent graft.
115 Citations
20 Claims
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1. An endoluminal prosthesis comprising:
a stent having a generally tubular body portion, a flareable proximal end portion, and a coupling portion disposed intermediate the body portion and the flareable portion, where the coupling portion is more crush-resistant than the body portion, whereby the coupling portion is more resistant to plastic deformation and bending than the body portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An endoluminal prosthesis comprising:
a stent having a generally tubular body portion, a flareable proximal end portion, and a bending portion connecting the body portion and the flareable portion, where the stiffness of the flareable portion increases in the direction of the bending portion to form a coupling portion intermediate the flareable portion and the body portion, the coupling portion having a higher crush-resistance than the body portion, whereby the coupling portion is more resistant to plastic deformation and bending than the body portion. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A method of repairing a body lumen at an intersection between a main vessel and a branch vessel, the method comprising the steps of:
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inserting a branch vessel prosthesis into the branch vessel and through a fenestration in the sidewall of a main vessel prosthesis disposed within the main vessel, the branch vessel prosthesis comprising a stent having a generally tubular body portion, a flareable proximal end portion, and a coupling portion disposed intermediate the body portion and the flareable portion and having a higher crush-resistance than the body portion, whereby the coupling portion is more resistant to plastic deformation and bending than the body portion; positioning the branch vessel prosthesis so that the coupling portion is aligned with the fenestration; and expanding the branch vessel prosthesis so that the distal end of the branch vessel prosthesis engages the lumen of the branch vessel, the flareable portion flares within the lumen of the main vessel prosthesis, and the coupling portion engages the main body prosthesis at the fenestration.
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Specification