STENT ATTACHMENT AND DEPLOYMENT MECHANISM
First Claim
Patent Images
1. A stent attachment and deployment system comprising:
- an inner member having a proximal end and a distal end;
an endoprosthesis having a proximal end and a distal end mounted coaxially about the inner member; and
a restraining mechanism mounted at least partially coaxially about the inner member, the restraining mechanism comprising a collar configured for engaging the distal end of the endoprosthesis, a hold down wire for securing the distal end of the endoprosthesis to the collar and an activation wire releasably connected to the hold down wire, the activation wire being configured to position the hold down wire such that the hold down wire secures the distal end of the endoprosthesis to the collar as long as the activation wire remains secured to the hold down wire and wherein when the activation wire is moved in the proximal direction it releases the hold down wire.
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Accused Products
Abstract
A stent attachment and deployment mechanism is utilized to prevent the distal end of an endoprosthesis comprising fixation barbs or other fixation mechanism from deploying prior to the remaining sections of the fixation device. With this stent attachment and deployment mechanism accurate deployment may be achieved.
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Citations
13 Claims
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1. A stent attachment and deployment system comprising:
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an inner member having a proximal end and a distal end; an endoprosthesis having a proximal end and a distal end mounted coaxially about the inner member; and a restraining mechanism mounted at least partially coaxially about the inner member, the restraining mechanism comprising a collar configured for engaging the distal end of the endoprosthesis, a hold down wire for securing the distal end of the endoprosthesis to the collar and an activation wire releasably connected to the hold down wire, the activation wire being configured to position the hold down wire such that the hold down wire secures the distal end of the endoprosthesis to the collar as long as the activation wire remains secured to the hold down wire and wherein when the activation wire is moved in the proximal direction it releases the hold down wire. - View Dependent Claims (2, 3, 11)
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4. A stent attachment and deployment system comprising:
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an inner member having a proximal end and a distal end; an endoprosthesis having a proximal end and a distal end mounted coaxially about the inner member; and a restraining mechanism mounted at least partially coaxially about the inner member, the restraining mechanism comprising a collar, having first and second end at least one radially protruding member for engaging and holding the distal end of the endoprosthesis, the at least one radially protruding member being attached to the first end of the collar and an activation wire attached to the second end of the collar, wherein when the activation wire is moved in the proximal direction, the collar moves in the proximal direction thereby causing the at least one protruding member to release the distal end of the endoprosthesis. - View Dependent Claims (5, 6, 12)
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7. A stent attachment and deployment system comprising:
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an inner member having a proximal end and a distal end; an endoprosthesis having a proximal end and a distal end mounted coaxially about the inner member; and a restraining mechanism mounted at least partially coaxially about the inner member, the restraining mechanism comprising a first collar mounted on the inner member at a first side of the distal end of the endoprosthesis, a second collar mounted on the inner member at a second side of the distal end of the endoprosthesis, and at least one hold down wire releasably interconnected between the first and second collars and to the distal end of the prosthesis for securing the distal end of the prosthesis in an unexpanded state. - View Dependent Claims (8, 9, 10, 13)
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Specification