Apparatus and methods for improved stent deployment
First Claim
1. An apparatus for deploying a stent, the apparatus comprising:
- a control member having at least one tine member comprising proximal and distal regions, where the proximal region of the at least one tine member is configured to engage an associated portion of a stent,a sheath at least partially disposed over the at least one tine member in a constrained state,where the control member comprises a contracted delivery configuration in which the proximal region of the at least one tine member is radially contracted and an expanded configuration in which the proximal region of the at least one of the tine member is radially expanded relative to a central longitudinal axis,where the proximal region of the at least one tine member is selectively and incrementally movable between the contracted and expanded configurations to facilitate positioning of the stent within a body passage,where the proximal region of the at least one tine member has a bend towards the central longitudinal axis in a state unconstrained by the sheath,where the proximal region of the at least one tine member comprises a first width and a first length, and the distal region of the at least one tine member comprises a second width greater than the first width and a second length greater than the first length, such that a stepped portion is formed between the proximal and distal regions of the at least one tine member.
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Accused Products
Abstract
Apparatus for facilitating deployment of a an implantable medical device includes a control member (20) having at least one tine member (35-37). A proximal region (35b-37b) of at least one of the tine members (35-37) is configured to engage an associated portion of a stent (60). In use, the control member (20) comprises a contracted delivery configuration in which the proximal region of the at least one of the tine member (35-37) is radially contracted, to radially constrain the associated portion of the stent (60). The control member (20) also comprises an expanded configuration in which the proximal region of the at least one of the tine member (35-37) expands radially outward relative to the central longitudinal axis to allow the stent to engage a body passage.
27 Citations
19 Claims
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1. An apparatus for deploying a stent, the apparatus comprising:
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a control member having at least one tine member comprising proximal and distal regions, where the proximal region of the at least one tine member is configured to engage an associated portion of a stent, a sheath at least partially disposed over the at least one tine member in a constrained state, where the control member comprises a contracted delivery configuration in which the proximal region of the at least one tine member is radially contracted and an expanded configuration in which the proximal region of the at least one of the tine member is radially expanded relative to a central longitudinal axis, where the proximal region of the at least one tine member is selectively and incrementally movable between the contracted and expanded configurations to facilitate positioning of the stent within a body passage, where the proximal region of the at least one tine member has a bend towards the central longitudinal axis in a state unconstrained by the sheath, where the proximal region of the at least one tine member comprises a first width and a first length, and the distal region of the at least one tine member comprises a second width greater than the first width and a second length greater than the first length, such that a stepped portion is formed between the proximal and distal regions of the at least one tine member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for deploying a stent, the method comprising:
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providing a control member having at least one tine member comprising proximal and distal regions; providing a sheath at least partially disposed over the at least one tine member in a constrained state; coupling the proximal region of the at least one tine member to an associated portion of a stent without an external wire; advancing the control member into a body passage in a contracted delivery configuration in which the proximal region of the at least one tine member is radially contracted relative to a central longitudinal axis of the control member to radially constrain the associated portion of the stent; deploying the control member to an expanded configuration in which the proximal region of the at least one tine member expands radially outward relative to the central longitudinal axis to allow the stent to expand, and further where the proximal region of the at least one tine member has a bend towards the central longitudinal axis in a state unconstrained by the sheath; and selectively and incrementally moving the proximal region of the at least one tine member between the contracted and expanded configurations to facilitate positioning of the stent, wherein the proximal region of the at least one tine member comprises a first width and a first length, and the distal region of the at least one tine member comprises a second width greater than the first width and a second length greater than the first length, such that a stepped portion is formed between the proximal and distal regions of the at least one tine member. - View Dependent Claims (10, 11, 12, 13)
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14. An apparatus for deploying a stent, the apparatus comprising:
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a control member having at least one tine member comprising proximal and distal regions, where the proximal region of the at least one tine member is configured to engage an associated portion of a stent, where the control member comprises a contracted delivery configuration in which the proximal region of the at least one tine member is radially contracted and an expanded configuration in which the proximal region of the at least one of the tine member is radially expanded relative to a central longitudinal axis, where the proximal region of the at least one tine member is selectively and incrementally movable between the contracted and expanded configurations to facilitate positioning of the stent within a body passage, where the proximal region of the at least one tine member comprises a first width, and the distal region of the at least one tine member comprises a second width greater than the first width, such that a stepped portion is formed between the proximal and distal regions of the at least one tine member, where the proximal region of the at least one tine member has a bend towards the central longitudinal axis, and wherein the bend is disposed in the proximal region of the first width. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification