Stent with a crush-resistant zone
AssigneeCook Medical Technologies LLC
InventorsDarin G. Schaeffer, Scott E. Boatman, Jay A. Dittman, David Ernest Hartley
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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.
Claims20
A balloon expandable stent comprising:
- a generally tubular body portion, a flareable proximal end portion, and a crush resistant zone disposed intermediate the body portion and the flareable proximal end portion, wherein the crush resistant zone is more crush-resistant than the body portion such that the crush resistant zone is more resistant to plastic deformation than the body portion when exposed to a concentrated and localized stress.
A balloon expandable stent comprising:
- a generally tubular body portion;
- a flareable proximal end portion,
- a crush resistant zone disposed intermediate the body portion and the flareable proximal end portion;
- and
- a graft material covering;
- wherein the crush resistant zone is more crush-resistant than the body portion such that the crush resistant zone is more resistant to plastic deformation than the body portion when exposed to a concentrated and localized stress.
A balloon expandable stent comprising:
- a generally tubular body portion comprising a plurality of interconnected rows of cells having an interconnection frequency;
- a flareable proximal end portion comprising at least one row of cells disposed radially about the balloon expandable stent;
- and
- a crush resistant zone disposed intermediate the body portion and the flareable proximal end portion and comprising at least one row of cells disposed radially about the balloon expandable stent;
- wherein an interconnection frequency between the at least one row of cells of the flareable proximal end portion and the at least one row of cells of the crush resistant zone is greater than an interconnection frequency between the at least one row of cells of the crush resistant zone and a proximal most row of cells of the plurality of rows of cells of the tubular body portion;
- and
- wherein the crush resistant zone is more crush-resistant than the body portion such that the crush resistant zone is more resistant to plastic deformation than the body portion when exposed to a concentrated and localized stress.
Dependencies are inferred from the claim text.