Apparatus for loading and delivering a stent
First Claim
1. A stent loading and deployment device comprising:
- an outer tube having a distal end, a longitudinal length, and defining a lumen;
an intermediate tube positioned in the lumen of the outer tube, the intermediate tube having a distal end, a longitudinal length, and defining a lumen;
an inner tube positioned in the lumen of the intermediate tube, the inner tube defining a lumen and having a distal end and a longitudinal length greater than the longitudinal length of the intermediate tube and the longitudinal length of the outer tube;
the outer tube, the intermediate tube, and the inner tube being independently movable in a longitudinal direction;
the stent loading and deployment device having a fully loaded configuration, a delivery configuration, and a stent deployment configuration, the stent loading and deployment device being in the stent deployment configuration after being in the fully loaded and delivery configurations;
wherein;
in both the fully loaded and the delivery configurations the distal ends of the outer and inner tubes are axially aligned to define a stent deployment region for a loaded stent, the stent deployment region entirely covered by the outer tube, and the distal end of the intermediate tube is proximal to the axially aligned distal ends of the outer and inner tubes and to a distal end of the stent deployment region; and
in the stent deployment configuration, at least a portion of the stent deployment region is uncovered by the outer tube;
the outer tube having an outer tube handle at a proximal end, the intermediate tube having an intermediate tube handle at a proximal end, and the inner tube having an inner tube handle at a proximal end, wherein;
the intermediate tube handle has a distal opening larger than a proximal opening; and
the inner tube has;
a distal portion with a first diameter, the distal portion slidable through only a portion of the intermediate tube handle so that relative axial movement of the intermediate tube and the inner tube is limited;
a proximal portion with a second diameter less than the first diameter, the proximal portion is slidably disposed within the intermediate tube handle.
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Accused Products
Abstract
A stent loading and deployment device includes an outer elongate tubular member having opposed proximal and distal ends and an inner elongate tubular member having opposed proximal and distal ends and slidably disposed within the outer tubular member. When the distal ends of the outer tubular member and the inner tubular member are axially aligned, a stent deployment region is defined there in between. The device further includes a stent loading member having opposed proximal and distal ends and slidably disposed between the outer tubular member and the inner tubular member. The distal end of the stent loading member is slidable to a distal position past the distal end of the outer tubular member for receiving a stent and is further slidable toward the proximal end of the outer tubular member to a location past the stent deployment region for disengagement of a stent from the stent loading member.
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Citations
15 Claims
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1. A stent loading and deployment device comprising:
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an outer tube having a distal end, a longitudinal length, and defining a lumen; an intermediate tube positioned in the lumen of the outer tube, the intermediate tube having a distal end, a longitudinal length, and defining a lumen; an inner tube positioned in the lumen of the intermediate tube, the inner tube defining a lumen and having a distal end and a longitudinal length greater than the longitudinal length of the intermediate tube and the longitudinal length of the outer tube; the outer tube, the intermediate tube, and the inner tube being independently movable in a longitudinal direction; the stent loading and deployment device having a fully loaded configuration, a delivery configuration, and a stent deployment configuration, the stent loading and deployment device being in the stent deployment configuration after being in the fully loaded and delivery configurations; wherein; in both the fully loaded and the delivery configurations the distal ends of the outer and inner tubes are axially aligned to define a stent deployment region for a loaded stent, the stent deployment region entirely covered by the outer tube, and the distal end of the intermediate tube is proximal to the axially aligned distal ends of the outer and inner tubes and to a distal end of the stent deployment region; and
in the stent deployment configuration, at least a portion of the stent deployment region is uncovered by the outer tube;the outer tube having an outer tube handle at a proximal end, the intermediate tube having an intermediate tube handle at a proximal end, and the inner tube having an inner tube handle at a proximal end, wherein; the intermediate tube handle has a distal opening larger than a proximal opening; and
the inner tube has;a distal portion with a first diameter, the distal portion slidable through only a portion of the intermediate tube handle so that relative axial movement of the intermediate tube and the inner tube is limited; a proximal portion with a second diameter less than the first diameter, the proximal portion is slidably disposed within the intermediate tube handle. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A stent deployment device wherein:
- a stent is positioned between a tubular outer member and a tubular inner member, wherein distal ends of the tubular outer member and tubular inner member are axially aligned;
a tubular stent loading member is positioned between the tubular outer member and the tubular inner member, with a distal end of the tubular stent loading member positioned proximal to a proximal end of the stent; wherein the tubular stent loading member includes a stent engagement member, the stent engagement member forming the distal end of the tubular stent loading member, the stent engagement member being radially distensible and contractible for loading the stent onto the stent deployment device; and wherein the tubular outer member, the tubular stent loading member, and the tubular inner member are independently movable in a longitudinal direction. - View Dependent Claims (9, 10, 11)
- a stent is positioned between a tubular outer member and a tubular inner member, wherein distal ends of the tubular outer member and tubular inner member are axially aligned;
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12. A deployment device comprising a stent, a tubular outer member, a tubular inner member, and a tubular stent loading member, wherein:
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a distal region of the stent is concentrically arranged between the tubular outer member and the tubular inner member, the tubular outer member being independently movable from the tubular inner member; a proximal region of the stent is concentrically arranged between the tubular inner member and a distal region of the tubular stent loading member, a distal end of the tubular stent loading member being proximal to a distal end of the stent, the tubular stent loading member being independently movable from the tubular inner member; a proximal region of the tubular stent loading member is concentrically arranged between the tubular outer member and the tubular inner member, the tubular stent loading member being independently movable from the tubular outer member; and wherein the distal region of the tubular stent loading member is a radially distensible stent engaging member. - View Dependent Claims (13, 14, 15)
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Specification