Rotating stent delivery system for side branch access and protection and method of using same
First Claim
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1. A system for treatment of a vessel bifurcation, the system comprising:
- a catheter, the catheter having a catheter shaft, the catheter shaft defining an inflation lumen therethrough, a portion of the catheter shaft characterized as an axle portion, the axle portion defining a fluid opening, the fluid opening being in fluid communication with the inflation lumen; and
a rotatable assembly, the rotatable assembly comprising a barrel, the barrel defining a substantially hollow longitudinal passage through which the axle portion extends, the rotatable assembly further comprising an expandable medical balloon sealingly disposed about the barrel, the balloon being expandable between a reduced state and an expanded state, wherein in the expanded state the balloon has a diameter greater than that in the reduced state, the barrel further defining at least one fluid port, the at least one fluid port being in fluid communication with the substantially hollow passage and an interior of the balloon.
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Abstract
A system for treatment of a vessel bifurcation and its method of use comprises a catheter having a catheter shaft, a portion of which is characterized as an axle about which a rotatable assembly is disposed and rotatable thereabout. The system employs a series of lumens, openings and/or ports to provide a balloon mounted on the rotatable assembly with fluid communication to the catheter shaft.
60 Citations
14 Claims
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1. A system for treatment of a vessel bifurcation, the system comprising:
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a catheter, the catheter having a catheter shaft, the catheter shaft defining an inflation lumen therethrough, a portion of the catheter shaft characterized as an axle portion, the axle portion defining a fluid opening, the fluid opening being in fluid communication with the inflation lumen; and
a rotatable assembly, the rotatable assembly comprising a barrel, the barrel defining a substantially hollow longitudinal passage through which the axle portion extends, the rotatable assembly further comprising an expandable medical balloon sealingly disposed about the barrel, the balloon being expandable between a reduced state and an expanded state, wherein in the expanded state the balloon has a diameter greater than that in the reduced state, the barrel further defining at least one fluid port, the at least one fluid port being in fluid communication with the substantially hollow passage and an interior of the balloon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for treating a vessel bifurcation comprising the steps of:
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providing a treatment system the treatment system comprising;
a catheter, the catheter having a catheter shaft, the catheter shaft defining an inflation lumen, a portion of the catheter shaft being characterized as an axle portion, the axle portion defining a fluid opening in fluid communication with the inflation lumen;
a rotatable assembly, the rotatable assembly disposed about the axle portion of the catheter shaft and being substantially freely rotatable thereabout, the rotatable assembly comprising an expandable balloon which has an interior in fluid communication with the inflation lumen, the rotatable assembly further comprising a secondary guidewire housing for passage of a secondary guidewire therethrough; and
a stent, the stent having an unexpanded configuration and an expanded configuration wherein in the expanded configuration the stent has a diameter greater than that in the reduced configuration, in the reduced configuration the stent being disposed about a portion of the balloon, at least a portion of the secondary guidewire housing underlying at least a portion of the stent, the secondary guidewire extending under the at least a portion of the stent and passing outward from the stent through one of the stent openings;
advancing the secondary guidewire into through a primary vessel and into a branch vessel at the bifurcation of the primary vessel and branch vessel;
advancing the system along the secondary guidewire to the bifurcation;
rotating the rotatable assembly such that the one of the stent openings is aligned with the ostium of the branch vessel; and
deploying the stent into the bifurcation.
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Specification