Multi stent delivery system
First Claim
Patent Images
1. A catheter assembly comprising:
- a catheter, the catheter comprising a catheter shaft;
a first rotatable sheath, the first rotatable sheath being disposed about a portion of the catheter shaft, the first rotatable sheath having a length substantially less than that of the catheter shaft, the first rotatable sheath being expandable from a reduced sheath state to an expanded sheath state, in the reduced sheath state the first sheath being rotatable about the portion of the catheter shaft;
a first guidewire housing, the first guidewire housing defining a first guidewire lumen for passage of a first guidewire therethrough, at least a portion of the first guidewire housing being engaged to the first rotatable sheath;
a first stent, the first stent being expandable from a reduced stent state to an expanded stent state, in the reduced stent state the stent being disposed about at least a portion of the first rotatable sheath; and
a second stent, the second stent being expandable from a reduced stent state to an expanded stent state, in the reduced stent state the second stent being adjacent to the first stent.
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Abstract
A catheter assembly comprises a catheter having a catheter shaft with a first rotatable sheath rotatably disposed thereabout. A first guidewire housing which defines a first guidewire lumen for passage of a first guidewire therethrough is engaged to the first rotatable sheath. A first stent, which when in the reduced stent state, is disposed about at least a portion of the first rotatable sheath. A second stent, which when in the reduced stent state, is positioned adjacent to the first stent.
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Citations
40 Claims
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1. A catheter assembly comprising:
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a catheter, the catheter comprising a catheter shaft;
a first rotatable sheath, the first rotatable sheath being disposed about a portion of the catheter shaft, the first rotatable sheath having a length substantially less than that of the catheter shaft, the first rotatable sheath being expandable from a reduced sheath state to an expanded sheath state, in the reduced sheath state the first sheath being rotatable about the portion of the catheter shaft;
a first guidewire housing, the first guidewire housing defining a first guidewire lumen for passage of a first guidewire therethrough, at least a portion of the first guidewire housing being engaged to the first rotatable sheath;
a first stent, the first stent being expandable from a reduced stent state to an expanded stent state, in the reduced stent state the stent being disposed about at least a portion of the first rotatable sheath; and
a second stent, the second stent being expandable from a reduced stent state to an expanded stent state, in the reduced stent state the second stent being adjacent to the first stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A method of treating a vessel bifurcation comprising the steps of:
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advancing a portion of a catheter assembly along a first guidewire to a vessel bifurcation, the catheter assembly comprising;
a catheter, the catheter comprising a catheter shaft;
a first rotatable sheath, the first rotatable sheath being disposed about a portion of the catheter shaft, the first rotatable sheath having a length substantially less than that of the catheter shaft, the first rotatable sheath being expandable from a reduced sheath state to an expanded sheath state, in the reduced sheath state the first sheath being rotatable about the portion of the catheter shaft;
a first guidewire housing, the first guidewire housing defining a first guidewire lumen for passage of the first guidewire therethrough, at least a portion of the first guidewire housing being engaged to the first rotatable sheath;
a first stent, the first stent being expandable from a reduced stent state to an expanded stent state, in the reduced stent state the stent being disposed about at least a portion of the first rotatable sheath; and
a second stent, the second stent being expandable from a reduced stent state to an expanded stent state, in the reduced stent state the second stent being adjacent to the first stent;
allowing the rotatable sheath to align the first stent with a first branch of the vessel bifurcation;
deploying the first stent to the expanded stent state within the vessel adjacent to the first branch of the bifurcation;
deploying the second stent to the expanded stent state within a second branch of the bifurcation; and
withdrawing the catheter assembly from the vessel. - View Dependent Claims (35)
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36. A method of treating a vessel bifurcation comprising the steps of:
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advancing a primary guidewire and a secondary guidewire through a vessel to a bifurcation, the primary guidewire extending from the vessel into a primary branch of the bifurcation, the secondary guidewire extending from the vessel into a secondary branch of the bifurcation;
advancing a portion of a first catheter assembly along the primary guidewire and the secondary guidewire to the vessel bifurcation, the first catheter assembly comprising;
a first catheter, the first catheter comprising a first catheter shaft the first catheter shaft defining a primary guidewire lumen for passage of the primary guidewire therethrough;
a first rotatable sheath, the first rotatable sheath being disposed about a portion of the catheter shaft, the first rotatable sheath having a length substantially less than that of the catheter shaft, the first rotatable sheath being expandable from a reduced sheath state to an expanded sheath state, in the reduced sheath state the first rotatable sheath being rotatable about the portion of the first catheter shaft;
a secondary guidewire housing, the secondary guidewire housing defining a secondary guidewire lumen for passage of the secondary guidewire therethrough, at least a portion of the secondary guidewire housing being engaged to the first rotatable sheath; and
a first stent, the first stent being expandable from a reduced stent state to an expanded stent state, in the reduced stent state the first stent being disposed about at least a portion of the first rotatable sheath, at least a portion of the secondary guidewire housing positioned between the first rotatable sheath and the first stent, wherein a portion of the secondary guidewire housing extends radially through a secondary opening in the first stent;
allowing the first rotatable sheath to align the first stent with the secondary branch of the vessel bifurcation;
deploying the first stent to the expanded stent state, wherein a proximal portion of the first stent is positioned within the vessel proximally adjacent to the bifurcation, a distal portion of the fist stent is positioned in the primary branch of the bifurcation and the secondary opening of the first stent is in fluid communication with the secondary branch of the bifurcation; and
withdrawing the catheter assembly from the vessel. - View Dependent Claims (37)
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38. A method of treating a vessel bifurcation comprising the steps of:
advancing a portion of at least one catheter to a vessel bifurcation, the at least one catheter having at least two expandable stents disposed thereabout, at least one of the stents being substantially free to rotate about a shaft of the catheter prior to expansion. - View Dependent Claims (39, 40)
Specification