Medical device delivery system with captive inner member
First Claim
1. A delivery system for placing a medical device within a body vessel, said delivery system comprising:
- a sheath member having a sheath member proximal end, a sheath member distal end, a circumferential wall, an inner surface, and an outer surface, the sheath member defining a first passageway having a first passageway proximal end and a first passageway distal end, the first passageway extending between the sheath member proximal and sheath member distal ends and having a distal cavity located within the first passageway and axially spaced from the sheath member proximal end, the circumferential wall defining an opening providing access from the environment external to the sheath member to the first passageway;
an inner member having an inner member distal end comprising a distal tip, an inner member proximal end comprising a proximal flange, and a mounting region about which said medical device can be disposed, the inner member defining a second passageway extending between the distal tip and proximal flange and being slidably disposed within the distal cavity such that the inner member proximal end is disposed within the distal cavity, the inner member movable between a first position in which the inner member is disposed entirely within the first passageway and a second position in which the inner member is partially disposed within the first passageway and partially disposed outside the first passageway; and
a fluid disposed in the first passageway and in contact with the proximal flange;
wherein only the fluid is disposed within an axial portion of the first passageway extending between the first passageway proximal end and the opening in the circumferential wall;
wherein the inner surface of the sheath member defines a groove adapted to temporarily engage the proximal flange of the inner member.
3 Assignments
0 Petitions
Accused Products
Abstract
Delivery systems for delivering and deploying expandable intraluminal medical devices at a desired point of treatment within a body vessel are provided. The delivery systems comprise a sheath member and an inner member slideably disposed within a cavity formed by the sheath member. An expandable intraluminal medical device is disposed about the inner member and is initially positioned within the delivery system. A means for preventing axial movement of the inner member holds the inner member in position so that, while the delivery system and medical device are positioned at a desired point of treatment, the sheath member can be retracted while an axial position of the inner member is substantially maintained.
19 Citations
18 Claims
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1. A delivery system for placing a medical device within a body vessel, said delivery system comprising:
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a sheath member having a sheath member proximal end, a sheath member distal end, a circumferential wall, an inner surface, and an outer surface, the sheath member defining a first passageway having a first passageway proximal end and a first passageway distal end, the first passageway extending between the sheath member proximal and sheath member distal ends and having a distal cavity located within the first passageway and axially spaced from the sheath member proximal end, the circumferential wall defining an opening providing access from the environment external to the sheath member to the first passageway; an inner member having an inner member distal end comprising a distal tip, an inner member proximal end comprising a proximal flange, and a mounting region about which said medical device can be disposed, the inner member defining a second passageway extending between the distal tip and proximal flange and being slidably disposed within the distal cavity such that the inner member proximal end is disposed within the distal cavity, the inner member movable between a first position in which the inner member is disposed entirely within the first passageway and a second position in which the inner member is partially disposed within the first passageway and partially disposed outside the first passageway; and a fluid disposed in the first passageway and in contact with the proximal flange; wherein only the fluid is disposed within an axial portion of the first passageway extending between the first passageway proximal end and the opening in the circumferential wall; wherein the inner surface of the sheath member defines a groove adapted to temporarily engage the proximal flange of the inner member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A delivery system for placing a medical device within a body vessel, said delivery system comprising:
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a sheath member having a sheath member proximal end, a sheath member distal end, a circumferential wall, an inner surface, and an outer surface, the sheath member defining a first passageway having a first passageway proximal end and a first passageway distal end, the first passageway extending between the sheath member proximal and sheath member distal ends and having a distal cavity located within the first passageway and axially spaced from the sheath member proximal end, the circumferential wall defining an opening providing access from the environment external to the sheath member to the first passageway; an inner member having an inner member distal end comprising a distal tip, an inner member proximal end comprising a proximal flange, and a mounting region about which said medical device can be disposed, the inner member defining a second passageway extending between the distal tip and proximal flange and being slidably disposed within the distal cavity such that the inner member proximal end is disposed within the distal cavity, the inner member movable between a first position in which the inner member is disposed entirely within the first passageway and a second position in which the inner member is partially disposed within the first passageway and partially disposed outside the first passageway; a reservoir disposed on the proximal end of the sheath member and defining a chamber in fluid communication with the first passageway; a fluid disposed in the first passageway and in contact with the proximal flange; and a plunger associated with the reservoir and adapted to force a portion of the fluid from the chamber and into the first passageway; wherein only the fluid is disposed within an axial portion of the first passageway extending between the first passageway proximal end and the opening in the circumferential wall; wherein the inner surface of the sheath member defines a groove adapted to temporarily engage the proximal flange of the inner member. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A delivery system for placing a medical device within a body vessel, said delivery system comprising:
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a sheath member having a sheath member proximal end, a sheath member distal end, a circumferential wall, an inner surface, and an outer surface, the sheath member defining a first passageway having a first passageway proximal end and a first passageway distal end, the first passageway extending between the sheath member proximal and sheath member distal ends and having a distal cavity, the circumferential wall defining an opening providing access from the environment external to the sheath member to the first passageway; an inner member having a distal tip, a proximal flange, and a mounting region about which said medical device can be disposed, the inner member defining a second passageway extending between the distal tip and proximal flange and being slidably disposed within the distal cavity, the inner member movable between a first position in which the inner member is disposed entirely within the first passageway and a second position in which the inner member is partially disposed within the first passageway and partially disposed outside the first passageway; a reservoir disposed on the proximal end of the sheath member and defining a chamber in fluid communication with the first passageway, the reservoir including a stem defining a third passageway extending between the chamber and the first passageway of the sheath member and providing fluid communication between the chamber and the first passageway; a fluid disposed in the first passageway and in contact with the proximal flange;
a plunger associated with the reservoir and adapted to force a portion of the fluid from the chamber and into the first passageway; anda grip disposed on the proximal end of the sheath member;
wherein the inner surface of the sheath member defines a groove adapted to temporarily engage the proximal flange of the inner member; andwherein only the fluid and the stem are disposed within an axial portion of the first passageway extending between the first passageway proximal end and the opening in the circumferential wall. - View Dependent Claims (18)
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Specification