Bifurcated stent and delivery system
First Claim
1. A system for deploying a bifurcated stent to a bifurcation site, the system comprising a catheter, the catheter being adapted for insertion into a body vessel, the catheter being advanced to the bifurcation site along a primary guide wire and a secondary guide wire, the catheter having a stent retaining region for retaining the bifurcated stent in an unexpanded state thereon, the catheter having a closed configuration and an open configuration, in the closed configuration a proximal housing and a distal housing overlie the stent retaining region, in the closed the proximal housing and the distal housing being immediately adjacent to one another to define a split region, in the open configuration the proximal housing and the distal housing being separated to enlarge the spit region and expose the stent retaining region, in the open configuration at least a portion of the bifurcated stent being released from the stent retaining region through the spit region to expand from the unexpanded state to an expanded state.
1 Assignment
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Accused Products
Abstract
Systems for delivering a bifurcated stent to a bifurcation site comprise catheters and/or bifurcated stents delivered therefrom.
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Citations
42 Claims
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1. A system for deploying a bifurcated stent to a bifurcation site, the system comprising
a catheter, the catheter being adapted for insertion into a body vessel, the catheter being advanced to the bifurcation site along a primary guide wire and a secondary guide wire, the catheter having a stent retaining region for retaining the bifurcated stent in an unexpanded state thereon, the catheter having a closed configuration and an open configuration, in the closed configuration a proximal housing and a distal housing overlie the stent retaining region, in the closed the proximal housing and the distal housing being immediately adjacent to one another to define a split region, in the open configuration the proximal housing and the distal housing being separated to enlarge the spit region and expose the stent retaining region, in the open configuration at least a portion of the bifurcated stent being released from the stent retaining region through the spit region to expand from the unexpanded state to an expanded state.
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22. A stent delivery system comprising:
a catheter, the catheter being adapted for insertion into a body vessel and advancement to a bifurcation site along a primary guide wire and a secondary guide wire, the catheter having;
a primary angioplasty balloon and a secondary angioplasty balloon, the primary angioplasty balloon being advanced to the bifurcation site along the primary guide wire, the secondary angioplasty balloon being advanced to the bifurcation site along the secondary guide wire, the secondary guide wire guiding the secondary angioplasty balloon into a secondary vessel of the bifurcation site, the primary guide wire guiding the primary angioplasty balloon into a primary vessel of the bifurcation site, and a primary stent delivery balloon and a secondary stent delivery balloon, the primary stent delivery balloon being advanced to the bifurcation site along the primary guide wire, the primary stent delivery balloon being positioned on the primary guide wire proximal to the primary angioplasty balloon, the secondary stent delivery balloon being advanced to the bifurcation site along the secondary guide wire, the secondary stent delivery balloon being positioned on the secondary guide wire proximal to the primary angioplasty balloon. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A bifurcated stent comprising:
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a first stent section, the first stent section being expandable from a predeployed state to a deployed state, in the deployed state the first stent section defining a primary flow path;
a second stent section, the second stent section being expandable from a predeployed state to a deployed state, in the deployed state the second stent section defining a secondary flow path, the secondary flow path in fluid communication with the primary flow path, the first stent section the second stent section being expandable independently from one another; and
at least one linkage member, the at least one linkage member linking an end of the secondary stent section to a portion of the first stent section, the at least one linkage member constructed and arranged to provide an articulated engagement between the first stent section and the second stent section. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. A bifurcated stent expandable from an unexpanded state to an expanded state for implantation at a bifurcation site, the stent comprising:
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a first stent section, the first stent section being expandable from a predeployed state to a deployed state, in the deployed state the first stent section defining a primary flow path;
a second stent section, the second stent section being expandable from a predeployed state to a deployed state, in the deployed state the second stent section defining a secondary flow path, the secondary flow path in fluid communication with the primary flow path, the first stent section the second stent section being expandable independently from one another, in the deployed state the first stent section being deployed into a primary vessel of the bifurcation site adjacent to the carina, in the deployed state the secondary stent section being deployed into a secondary vessel of the bifurcation site, in the deployed state the first stent section extending across the secondary vessel but not substantially beyond the carina of the bifurcation site.
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Specification