Prosthesis deployment system
First Claim
1. An introducer for an expandable endovascular prosthesis having a tubular member defining a lumen about a longitudinal axis, including a proximal portion, a distal portion, and a middle portion between the proximal and distal portions, the prosthesis being radially movable between a compressed configuration and an expanded configuration, the introducer comprising:
- a distal prosthesis positioning mechanism including a distal retention section positioned radially inside of a sheath to retain said prosthesis distal portion until deployment, and a first control member to selectively disengage the distal retention section from said prosthesis distal portion;
a proximal prosthesis positioning mechanism including a cylindrical sleeve to maintain the proximal portion of said prosthesis in the compressed configuration until deployment, the cylindrical sleeve having a tapered extension coupled thereto and extending proximally therefrom, and a second control member to selectively disengage said prosthesis proximal portion from the cylindrical sleeve,wherein the second control member includes a first region coupled to the distal prosthesis positioning mechanism extending longitudinally therefrom, and a second region including an enlarged uninflatable tip coupled to the first region, the enlarged tip comprising a conical surface facing the proximal direction, the enlarged tip positioned within said prosthesis lumen, the conical surface selectively abutting a distal end of said prosthesis proximal portion to retain said prosthesis proximal portion in the cylindrical sleeve; and
the sheath positioned radially outside of the cylindrical sleeve to retain the distal and middle portions of said prosthesis in the compressed configuration until deployment.
3 Assignments
0 Petitions
Accused Products
Abstract
An introducer for an expandable endovascular prosthesis having a self expanding stent has a distal prosthesis positioning mechanism and a proximal prosthesis retention mechanism. The proximal prosthesis retention mechanism includes a cylindrical sleeve adapted to retain the self expanding stent. A release mechanism extends proximally from the distal prosthesis positioning mechanism and exerts a force in the proximal direction on an interior surface of the self expanding stent to retain the self expanding stent in the cylindrical sleeve.
101 Citations
28 Claims
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1. An introducer for an expandable endovascular prosthesis having a tubular member defining a lumen about a longitudinal axis, including a proximal portion, a distal portion, and a middle portion between the proximal and distal portions, the prosthesis being radially movable between a compressed configuration and an expanded configuration, the introducer comprising:
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a distal prosthesis positioning mechanism including a distal retention section positioned radially inside of a sheath to retain said prosthesis distal portion until deployment, and a first control member to selectively disengage the distal retention section from said prosthesis distal portion; a proximal prosthesis positioning mechanism including a cylindrical sleeve to maintain the proximal portion of said prosthesis in the compressed configuration until deployment, the cylindrical sleeve having a tapered extension coupled thereto and extending proximally therefrom, and a second control member to selectively disengage said prosthesis proximal portion from the cylindrical sleeve, wherein the second control member includes a first region coupled to the distal prosthesis positioning mechanism extending longitudinally therefrom, and a second region including an enlarged uninflatable tip coupled to the first region, the enlarged tip comprising a conical surface facing the proximal direction, the enlarged tip positioned within said prosthesis lumen, the conical surface selectively abutting a distal end of said prosthesis proximal portion to retain said prosthesis proximal portion in the cylindrical sleeve; and the sheath positioned radially outside of the cylindrical sleeve to retain the distal and middle portions of said prosthesis in the compressed configuration until deployment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An introducer for an expandable endovascular prosthesis having a tubular member defining a lumen about a longitudinal axis, including a distal portion, a proximal portion having a self-expanding stent at a proximal end of said prosthesis proximal portion, and a middle portion between the proximal and distal portions, the prosthesis being radially movable between a compressed configuration and an expanded configuration, the introducer comprising:
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a control section to be maintained external to a patient; a sheath positioned radially outside of said prosthesis and contactable therewith to retain the distal and middle portions of said prosthesis in the compressed configuration; a cylindrical sleeve positioned radially inside of the sheath to maintain the self-expanding stent of said prosthesis in the compressed configuration; and a control member including a first region coupled to the control section extending longitudinally therefrom, and a second region coupled to the first region including an uninflatable conical tip positioned within said prosthesis lumen between the prosthesis distal portion and the self-expanding stent, the conical tip having a conical surface facing the proximal direction, the conical surface abutting a distal end of the self expanding stent to retain the self expanding stent within the cylindrical sleeve until said prosthesis is positioned at a desired site within a body vessel lumen of the patient. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. An introducer for an expandable endovascular prosthesis having a tubular member defining a lumen about a longitudinal axis, including a distal portion, a proximal portion having a self-expanding stent at a proximal end of said prosthesis proximal portion, and a middle portion between the proximal and distal portions, the prosthesis being radially movable between a compressed configuration and an expanded configuration, the introducer comprising:
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a distal prosthesis positioning mechanism including a distal retention section positioned radially inside of a sheath to retain the prosthesis distal portion until deployment, and a first control member to selectively disengage the distal retention section from the prosthesis distal portion; and a proximal prosthesis positioning mechanism including a cylindrical sleeve to maintain the proximal self-expanding stent of said prosthesis in the compressed configuration until deployment, the cylindrical sleeve having a tapered extension extending proximally therefrom, and a second control member and a third control member to selectively disengage the proximal self-expanding stent from the cylindrical sleeve, wherein the second control member includes a first region coupled to the distal prosthesis positioning mechanism extending longitudinally therefrom, and a second region including an enlarged conical tip, the second region coupled to the first region and extending longitudinally therefrom, the enlarged uninflatable conical tip positioned within said prosthesis lumen and having a conical surface facing the proximal direction, said conical surface selectively abutting a distal end of the proximal self-expanding stent of said prosthesis to retain the proximal self-expanding stent in the cylindrical sleeve, and wherein the third control member is attached to the tapered extension of the cylindrical sleeve, the third control member being slidably engaged with the second control member to selectively disengage the cylindrical sleeve from said prosthesis by proximal movement of the cylindrical sleeve until the prosthesis proximal portion radially moves to the expanded configuration; and the sheath positioned radially outside of the cylindrical sleeve and contacting the distal and middle portions of said prosthesis to retain the distal and middle portions of said prosthesis in the compressed configuration until deployment. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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Specification