Actively controllable stent, stent graft, heart valve and method of controlling same
First Claim
1. A surgical implant, comprising:
- a deformable stent of a shape-memory material set to a given shape, the stent having a plurality of lumens comprising first and second segments, wherein the first segments have interior threads; and
a selectively adjustable assembly at the stent having adjustable elements with first and second portions and being operable to force a configuration change in at least a portion of the stent from the given shape to a different deformed shape, the first portions of the adjustable elements having exterior threads that threadably engage the interior threads of respective first segments of the lumens when the stent is in a crimped configuration and when the stent is in an expanded configuration, and the second portions of the adjustable elements being axially slidable through respective ones of the second segments of the lumens.
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0 Petitions
Accused Products
Abstract
Sealable and repositionable implant devices are provided with features that increase the ability of implants such as endovascular grafts and valves to be precisely deployed or re-deployed, with better in situ accommodation to the local anatomy of the targeted recipient anatomic site, and/or with the ability for post-deployment adjustment to accommodate anatomic changes that might compromise the efficacy of the implant. A surgical implant includes an implant body and a selectively adjustable assembly attached to the implant body, the assembly having adjustable elements and being operable to cause a configuration change in a portion of the implant body and, thereby, permit implantation of the implant body within an anatomic orifice to effect a seal therein under normal physiological conditions.
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Citations
29 Claims
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1. A surgical implant, comprising:
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a deformable stent of a shape-memory material set to a given shape, the stent having a plurality of lumens comprising first and second segments, wherein the first segments have interior threads; and a selectively adjustable assembly at the stent having adjustable elements with first and second portions and being operable to force a configuration change in at least a portion of the stent from the given shape to a different deformed shape, the first portions of the adjustable elements having exterior threads that threadably engage the interior threads of respective first segments of the lumens when the stent is in a crimped configuration and when the stent is in an expanded configuration, and the second portions of the adjustable elements being axially slidable through respective ones of the second segments of the lumens. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A surgical implant, comprising:
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a deformable stent of a shape-memory material set to a given shape, the stent having a wall with a wall thickness and a longitudinal extent, the wall defining at least one drive screw lumen within the wall thickness along the longitudinal extent, wherein at least a portion of the at least one drive screw lumen has interior threads; and a selectively adjustable assembly at the stent, having adjustable elements comprising at least one drive screw with a non-threaded portion and a threaded portion, and being operable to force a configuration change in at least a portion of the stent from the given shape to a different deformed shape, the non-threaded portion of the at least one drive screw being slidably movable within the at least one drive screw lumen, and the threaded portion of the at least one drive screw being rotationally movable within the at least one drive screw lumen and having exterior threads configured to engage the interior threads of the at least one drive screw lumen when the stent is in a delivery state and when the stent is in an expanded state. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification