Percutaneous heart valve delivery systems
First Claim
1. A medical device comprising:
- an elongate sleeve having a distal end and a proximal end;
a plurality of apertures in the sleeve adjacent the distal end;
an elastic stent frame comprising a plurality of struts, each strut including a proximal aperture,wherein the proximal aperture in each strut together form a plurality of proximal apertures of the stent frame, wherein the stent frame further comprises a plurality of distal apertures, each distal aperture being in one of the plurality of struts of the stent frame; and
a plurality of filaments, each filament received within the sleeve from the proximal end, passing out of and looping over the sleeve, passing through one of the strut distal apertures, running directly along a length of one of the struts, passing through one of the strut proximal apertures, and passing through one of the sleeve apertures and into the sleeve.
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0 Petitions
Accused Products
Abstract
Embodiments described herein address the need for improved catheter devices for delivery, repositioning and/or percutaneous retrieval of the percutaneously implanted heart valves. One embodiment employs a plurality of spring-loaded arms releasably engaged with a stent frame for controlling expansion for valve deployment. Another embodiment employs a plurality of filaments passing through a distal end of a pusher sleeve and apertures in a self-expandable stent frame to control its state of deployment. With additional features, lateral positioning of the stent frame may also be controlled. Yet another embodiment includes plurality of outwardly biased arms held to complimentary stent frame features by overlying sheath segments. Still another embodiment integrates a visualization system in the subject delivery system. Variations on hardware and methods associated with the use of these embodiments are contemplated in addition to those shown and described.
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Citations
22 Claims
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1. A medical device comprising:
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an elongate sleeve having a distal end and a proximal end; a plurality of apertures in the sleeve adjacent the distal end; an elastic stent frame comprising a plurality of struts, each strut including a proximal aperture, wherein the proximal aperture in each strut together form a plurality of proximal apertures of the stent frame, wherein the stent frame further comprises a plurality of distal apertures, each distal aperture being in one of the plurality of struts of the stent frame; and a plurality of filaments, each filament received within the sleeve from the proximal end, passing out of and looping over the sleeve, passing through one of the strut distal apertures, running directly along a length of one of the struts, passing through one of the strut proximal apertures, and passing through one of the sleeve apertures and into the sleeve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A medical device delivery system comprising:
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an elongate sleeve having a distal end and a proximal end, a plurality of apertures in the sleeve adjacent the distal end; an elastic stent frame comprising a plurality of struts, each strut including an aperture, wherein the aperture in each strut together form a plurality of proximal apertures of the stent frame, wherein the stent frame further comprises a plurality of distal apertures, each distal aperture being in one of the plurality of struts of the stent frame; a plurality of filaments, each filament received within the sleeve from the proximal end, passing out and looping over the sleeve, passing through one of the proximal strut apertures, directly running along the length of one of the struts to, and passing through one of the distal apertures, and passing through one of the sleeve apertures and into the sleeve; and a handle at the proximal end, the handle including a pivot fitment, the filaments connected to the pivot fitment spaced in a radial orientation matching a radial orientation of the filaments at the stent frame. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification