Stent delivery system
First Claim
1. A stent delivery system comprising:
- a catheter system including an elongate member including a chamber arranged at a distal end of said system, said chamber being structured and arranged to receive a preloaded stent;
a sheath for covering said stent receiving section, said sheath having a proximal sheath portion extending over a proximal portion of said chamber and structured and arranged to be moveable in a proximal direction and a distal sheath portion extending over a distal portion of said chamber structured and arranged to be moveable in a distal direction; and
means for controlling the movement of said proximal sheath portion in said proximal direction and means for controlling the movement of said distal sheath portion in said distal direction;
wherein said means for controlling the movement of said proximal sheath portion in said proximal direction and the movement of said distal sheath portion in said distal direction comprises;
a rotatable proximal housing; and
a stationary distal housing operably coupled to said rotatable outer proximal housing;
wherein said rotatable proximal housing includes an internal throat portion; and
wherein said means for controlling the movement of said proximal sheath portion in said proximal direction and the movement of said distal sheath portion in said distal direction further comprises;
an annular sleeve operably coupled to said throat portion of said rotatable proximal housing such that upon rotation of said rotatable proximal housing said annular sleeve moves in a distal direction.
1 Assignment
0 Petitions
Accused Products
Abstract
A first stent delivery system provided with a sheath for covering the stent, the sheath including proximal sheath portion adapted to be movable in a proximal direction and a distal sheath portion adapted to be moveable in a distal direction. A second stent delivery system including an outer and intermediate tubular members covering a chamber with a preloaded stent, the outer tubular member being retractable prior to the retraction of the intermediate sheath and release of the stent. A third stent delivery system including with an inflatable balloon at a distal end of the system for fixing the system in place within the vessel prior to the release of the stent thereby insure accurate stent deployment.
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Citations
29 Claims
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1. A stent delivery system comprising:
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a catheter system including an elongate member including a chamber arranged at a distal end of said system, said chamber being structured and arranged to receive a preloaded stent;
a sheath for covering said stent receiving section, said sheath having a proximal sheath portion extending over a proximal portion of said chamber and structured and arranged to be moveable in a proximal direction and a distal sheath portion extending over a distal portion of said chamber structured and arranged to be moveable in a distal direction; and
means for controlling the movement of said proximal sheath portion in said proximal direction and means for controlling the movement of said distal sheath portion in said distal direction;
wherein said means for controlling the movement of said proximal sheath portion in said proximal direction and the movement of said distal sheath portion in said distal direction comprises;
a rotatable proximal housing; and
a stationary distal housing operably coupled to said rotatable outer proximal housing;
wherein said rotatable proximal housing includes an internal throat portion; and
wherein said means for controlling the movement of said proximal sheath portion in said proximal direction and the movement of said distal sheath portion in said distal direction further comprises;
an annular sleeve operably coupled to said throat portion of said rotatable proximal housing such that upon rotation of said rotatable proximal housing said annular sleeve moves in a distal direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A stent delivery system comprising:
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a catheter system including an elongate member including a chamber arranged at a distal end of said system, said chamber being structured and arranged to receive a preloaded stent;
a sheath for covering said stent receiving section, said sheath having a proximal sheath portion extending over a proximal portion of said chamber and structured and arranged to be moveable in a proximal direction and a distal sheath portion extending over a distal portion of said chamber structured and arranged to be moveable in a distal direction; and
means for controlling the movement of said proximal sheath portion in said proximal direction and means for controlling the movement of said distal sheath portion in said distal direction;
wherein said means for controlling the movement of said proximal sheath portion in said proximal direction and the movement of said distal sheath portion in said distal direction further comprises;
a plunger operably coupled to an inner tubular member, said plunger being operably coupled to an annular sleeve during at least a selected phase of movement of said annular sleeve such that upon rotation of said rotatable proximal member said plunger moves conjointly with said annular sleeve in a distal direction thereby moving said distal sheath portion in said distal direction; and
wherein said means for controlling the movement of said proximal sheath portion in said proximal direction and the movement of said distal sheath portion in said distal direction further comprises;
a locking mechanism, said locking mechanism being structured and arranged to prevent the distal movement of said plunger during an initial phase of movement of said annular sleeve and permit said plunger to move conjointly with said annular sleeve during said selected phase of movement of said annular sleeve in the system, when the junction of said distal and proximal sheath portions are located initially towards a distal end of said stent receiving section. - View Dependent Claims (11, 12, 13, 14)
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15. A stent delivery system comprising:
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a catheter system including an elongate member including a chamber arranged at a distal end of said system, said chamber being structured and arranged to receive a preloaded stent;
a sheath for covering said stent receiving section, said sheath having a proximal sheath portion extending over a proximal portion of said chamber and structured and arranged to be moveable in a proximal direction and a distal sheath portion extending over a distal portion of said chamber structured and arranged to be moveable in a distal direction; and
means for controlling the movement of said proximal sheath portion in said proximal direction and means for controlling the movement of said distal sheath portion in said distal direction;
wherein said means for controlling the movement of said proximal sheath portion in said proximal direction and the movement of said distal sheath portion in said distal direction comprises;
a rotatable proximal housing; and
a stationary distal housing operably coupled to said rotatable outer proximal housing;
wherein said rotatable proximal housing includes an internal throat portion; and
wherein said means for controlling the movement of said proximal sheath portion in said proximal direction and the movement of said distal sheath portion in said distal direction further comprises;
an annular sleeve operably coupled to said throat portion of said rotatable proximal housing such that upon rotation of said rotatable proximal housing said annular sleeve moves in a distal direction wherein said means for controlling the movement of said proximal sheath portion in said proximal direction and the movement of said distal sheath portion in said distal direction further comprises;
a plunger operably coupled to an inner tubular member, said plunger being operably coupled to said annular sleeve during at least a selected phase of movement of said annular sleeve such that upon rotation of said rotatable proximal member said plunger moves conjointly with said annular sleeve in a distal direction thereby moving said distal sheath portion in said distal direction; and
wherein said means for controlling the movement of said proximal sheath portion in said proximal direction and the movement of said distal sheath portion in said distal direction further comprises;
means for operably coupling said plunger to said annular sleeve such that as soon as said annular sleeve begins moving in a distal direction said plunger and said distal portion of said sheath also move conjointly with said sleeve in said distal direction when a junction between said proximal and distal sheath portions is initially arranged over a middle portion of said stent receiving section.
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16. A stent delivery system comprising:
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a sheath for covering a stent, said sheath having a proximal sheath portion structured and arranged to be moveable in a proximal direction and a distal sheath portion structured and arranged to be moveable in a distal direction;
means for controlling the movement of said proximal sheath portion in said proximal direction and means for controlling the movement of said distal sheath portion in said distal direction;
wherein said means for controlling the movement of said proximal sheath portion in said proximal direction and the movement of said distal sheath portion in said distal direction comprises;
a rotatable proximal housing; and
a stationary distal housing operably coupled to said rotatable outer proximal housing;
wherein said rotatable proximal housing includes an internal throat portion; and
wherein said means for controlling the movement of said proximal sheath portion in said proximal direction and the movement of said distal sheath portion in said distal direction further comprises;
an annular sleeve operably coupled to said throat portion of said rotatable proximal housing such that upon rotation of said rotatable proximal housing said annular sleeve moves in a distal direction; and
whereby when said proximal sheath portion is moved in said proximal direction and said distal sheath portion is moved in said distal direction a middle portion of said stent is exposed prior to the exposure and expansion of the terminal end portions of said stein. - View Dependent Claims (17, 18)
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19. A catheter assembly for delivering and deploying a self-expanding stent, comprising:
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an elongate member having an axially extending stent-mounting portion at a distal end region thereof;
a self-expanding stent having proximal and distal ends coaxially mounted in a collapsed configuration on said stent-mounting portion of said elongate member;
an outer tubular proximal sheath portion coaxially mounted on said elongate member at said distal region thereof, said proximal sheath portion having a distal end and being structured and arranged to move between a closed position in which said distal end of said proximal sheath portion overlies said stent and is situated between the ends of said stent, and an open position in which said distal end of said proximal sheath portion, does not overlie said stent and is situated proximally of said proximal end of said stent;
an outer tubular distal sheath portion coaxially mounted on said elongate member at said distal region thereof, said distal sheath portion having a proximal end and being structured and arranged to move between a closed position in which said proximal end of said distal sheath portion overlies said stent and is situated between the ends of said stent, and an open position in which said proximal end of said distal sheath portion does not overlie said stent and is situated distally of said distal end of said stent;
means for controlling the movement of said proximal sheath portion situated in part at, and operable from, a proximal end region of said catheter assembly for controlling the movement of said proximal sheath portion in said proximal direction and distal sheath portions in said distal direction from said closed to said open positions thereof wherein said means for controlling the movement comprises;
a rotatable proximal housing; and
a stationary distal housing operably coupled to said rotatable outer proximal housing;
wherein said rotatable proximal housing includes an internal throat portion; and
wherein said means for controlling the movement of said proximal sheath portion in said proximal direction and the movement of said distal sheath portion in said distal direction further comprises;
an annular sleeve operably coupled to said throat portion of said rotatable proximal housing such that upon rotation of said rotatable proximal housing said annular sleeve moves in a distal direction; and
whereby said stent is delivered to a desired treatment site within said vessel while mounted in a collapsed configuration on said stent-mounting portion of said elongate member with said proximal and distal sheath portions situated in their closed positions restraining the expansion of said stent, and is deployed at said treatment site by operation of said means for controlling to move said proximal and distal sheath portions to their open positions to allow the expansion and deployment of said stent. - View Dependent Claims (20, 21, 22, 23)
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24. An elongate catheter assembly for delivering and deploying a self-expanding stent, comprising:
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an elongate member having an axially extending stent-mounting portion at a distal end region thereof;
an outer tubular proximal sheath portion coaxially mounted on said elongate member at said distal region thereof, said proximal sheath portion being structured and to move between a closed position in which said proximal sheath portion partially overlies said stent-mounting portion of said elongate member, and an open position in which said proximal sheath portion does not overlie said stent-mounting portion of said elongate member or any part thereof;
an outer tubular distal sheath portion coaxially mounted on said elongate member at said distal region thereof, said distal sheath portion being structured and arranged to move between a closed position in which said distal sheath portion partially overlies said stent-mounting portion of said elongate member, and an open position in which said distal sheath portion does not overlie said stent-mounting portion or any part thereof;
a means for controlling the movement situated in part at, and operable from, a proximal end region of said catheter assembly for controlling the movement of said proximal and distal sheath portions from said closed to said open positions thereof;
wherein said means for controlling the movement comprises;
a rotatable proximal housing; and
a stationary distal housing operably coupled to said rotatable outer proximal housing;
wherein said rotatable proximal housing includes an internal throat portion; and
wherein said means for controlling the movement further comprises;
an annular sleeve operably coupled to said throat portion of said rotatable proximal housing such that upon rotation of said rotatable proximal housing said annular sleeve moves in a distal direction; and
whereby a stent is delivered to a desired treatment site within said vessel while mounted in a collapsed configuration on said stent-mounting portion of said elongate member with said proximal and distal sheath portions situated in their closed positions restraining the expansion of the stent, and is deployed at said treatment site by operation of said means for controlling to move said proximal and distal sheath portions to their open positions to allow the expansion and deployment of the stent. - View Dependent Claims (25, 26, 27, 28, 29)
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Specification