APPARATUS AND METHODS FOR IMPROVED STENT DEPLOYMENT
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0 Petitions
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. The proximal region of the at least one tine member (35-37) is selectively movable an incremental amount between the contracted and expanded configurations, in radially inward and outward directions, to facilitate positioning of the stent (60) within the body passage.
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Citations
40 Claims
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1-20. -20. (canceled)
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21. 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, and 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. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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30. 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; coupling the proximal region of the at least one tine member to an associated portion of a stent; 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 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. - View Dependent Claims (31, 32, 33, 34)
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35. 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; an inner cannula having proximal and distal ends, where the inner cannula comprises a lumen disposed between the proximal and distal ends to permit advancement of the inner cannula over a wire guide, and where the distal region of the control member is affixed to an outer surface of the inner cannula; and an outer cannula sized for longitudinal movement over a portion of the inner cannula and at least the distal region of the at least one tine member, where selective proximal advancement of the outer cannula over the distal region of the at least one tine member incrementally urges the proximal region of the at least one tine member in a radially inward direction relative to the central longitudinal axis to radially constrain the associated portion of the stent, where selective distal retraction of the outer cannula over the distal region of the at least one tine member permits incremental radial expansion of the proximal region of the at least one tine member relative to the central longitudinal axis to allow the stent to expand. - View Dependent Claims (36, 37, 38, 39, 40)
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Specification