STENT DELIVERY SYSTEM
First Claim
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1. A stent delivery system comprising:
- a distal-side tube possessing a guide wire lumen;
a proximal-side tube;
a fixing tube fixed to a proximal portion of the distal-side tube and fixed to a distal portion of the proximal-side tube so as not to close a rear end opening of the distal-side tube;
a stent containing tubular member enclosing a distal portion of the distal-side tube and slidable toward the proximal end of the distal-side tube;
at least one pulling wire extending inside the proximal-side tube, the at least one pulling wire having one end section fixed to the stent containing tubular member so that a proximal direction pulling force applied to the at least one pulling wire moves the stent containing tubular member in the proximal direction toward the proximal-side tube;
a cylindrically-shaped stent located in the stent containing tubular member, the stent being located in the stent containing tubular member in a compressed state in which the stent is compressed inwardly toward a central axis of the stent, the stent being expandable outwardly when released to outside the stent containing tubular member;
a stent proximal end lock section located on a distal side of the distal-side tube and abutting on a proximal end of the stent contained in the stent containing tubular member to restrict movement of the stent in the proximal direction;
at least one distal-side priming slit passing through a side wall of the distal-side tube in proximity to the stent proximal end lock section;
at least one proximal-side priming slit passing through the side wall of the distal-side tube on a proximal side of the distal-side tube; and
the at least one distal-side priming slit and the at least one proximal-side priming slit are opened by injecting liquid into the guide wire lumen, with a distal opening or a rear end opening of the guide wire lumen closed.
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Accused Products
Abstract
A stent delivery system includes a distal-side tube, a proximal-side tube, a fixing tube, a stent containing tubular member, a stent in the stent containing tubular member, and a pulling wire for moving the stent containing tubular member to the proximal side. The distal-side tube includes a distal-side priming slit provided in a side wall in proximity to a stent proximal end lock section and a proximal-side priming slit provided in a side wall on the proximal side of the distal-side tube. The slits are opened by injecting liquid, with the distal opening or the rear end opening of a guide wire lumen of the distal-side tube closed.
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Citations
19 Claims
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1. A stent delivery system comprising:
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a distal-side tube possessing a guide wire lumen; a proximal-side tube; a fixing tube fixed to a proximal portion of the distal-side tube and fixed to a distal portion of the proximal-side tube so as not to close a rear end opening of the distal-side tube; a stent containing tubular member enclosing a distal portion of the distal-side tube and slidable toward the proximal end of the distal-side tube; at least one pulling wire extending inside the proximal-side tube, the at least one pulling wire having one end section fixed to the stent containing tubular member so that a proximal direction pulling force applied to the at least one pulling wire moves the stent containing tubular member in the proximal direction toward the proximal-side tube; a cylindrically-shaped stent located in the stent containing tubular member, the stent being located in the stent containing tubular member in a compressed state in which the stent is compressed inwardly toward a central axis of the stent, the stent being expandable outwardly when released to outside the stent containing tubular member; a stent proximal end lock section located on a distal side of the distal-side tube and abutting on a proximal end of the stent contained in the stent containing tubular member to restrict movement of the stent in the proximal direction; at least one distal-side priming slit passing through a side wall of the distal-side tube in proximity to the stent proximal end lock section; at least one proximal-side priming slit passing through the side wall of the distal-side tube on a proximal side of the distal-side tube; and the at least one distal-side priming slit and the at least one proximal-side priming slit are opened by injecting liquid into the guide wire lumen, with a distal opening or a rear end opening of the guide wire lumen closed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A stent delivery system comprising:
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a distal-side tube possessing a guide wire lumen to receive a guide wire, the guide wire lumen being surrounded by a side wall of the distal-side tube, the guide wire lumen extending from an open distal end to an open proximal end so that a guide wire received in the guide wire lumen passes through the open distal end of the guide wire lumen and passes through the open proximal end of the guide wire lumen; a proximal-side tube; a fixing tube positioned axially between the distal-side tube and the proximal-side tube; a stent containing tubular member, a distal portion of the distal-side tube passing through the stent containing tubular member so that the distal-side tube and the stent containing tubular member axially overlap one another with an annular space between an inner surface of the stent containing tubular member and an outer surface of the distal-side tube, the stent containing tubular member being axially movable in a proximal direction relative to the distal-side tube; at least one pulling wire positioned in the proximal-side tube and possessing an end fixed to the stent containing tubular member so that a pulling force applied to the at least one pulling wire in the proximal direction moves the stent containing tubular member in the proximal direction; a cylindrically-shaped stent located in the annular space between the inner surface of the stent containing tubular member and the outer surface of the distal-side tube, the stent being compressed inwardly while in the annular space and being automatically expandable outwardly when released to outside the annular space; a stent proximal end lock section fixed to the distal-side tube, the stent proximal end lock section being positioned axially between a proximal end of the stent and a proximal-most end of the stent containing tubular member to restrict movement of the stent in the proximal direction; at least one priming slit passing through the side wall of the distal-side tube and configured to be opened upon injecting liquid into the guide wire lumen while the open distal end or the open proximal end is closed, the at least one priming slit being positioned between a proximal end of the stent containing tubular member and a distal end of the stent containing tubular member; and the at least one priming slit passing through the side wall of the distal-side tube at a location between a distal end of the stent containing tubular member and a proximal end of the stent containing tubular member. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method of priming a stent delivery system comprising:
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sealing an open end of a guide wire lumen in a distal-side tube of the stent delivery system, the stent delivery system also comprising a proximal-side tube; a fixing tube positioned axially between the distal-side tube and the proximal-side tube; a stent containing tubular member through which extends a distal portion of the distal-side tube; at least one pulling wire positioned in the proximal-side tube and possessing an end fixed to the stent containing tubular member to move the stent containing tubular member in a proximal direction by applying a pulling force to the at least one pulling wire in the proximal direction; a cylindrically-shaped stent located in the stent containing tubular member in an axially inwardly compressed state, the stent being automatically expandable outwardly when released to outside the stent containing tubular member; a stent proximal end lock section fixed to the distal-side tube at a position axially between a proximal-most end of the stent and a proximal-most end of the stent containing tubular member to restrict movement of the stent in the proximal direction; and at least one priming slit passing through a side wall of the distal-side tube at a location between a proximal end of the stent containing tubular member and a distal end of the stent containing tubular member; introducing priming solution into the guide wire lumen while the one end of the guide wire is closed; and the introduction of the priming solution into the guide wire lumen opening the at least one priming slit so that the priming solution flows through the priming slit such that the priming solution flowing through the at least one priming slit contacts an outer surface of the distal-side tube. - View Dependent Claims (19)
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Specification