Heart valve docking system
First Claim
1. A docking device for docking a prosthetic valve at a native heart valve, the docking device comprising:
- a flexible body comprising an elongate tubular structure, a first lumen extending at least partially through the flexible body, and a second lumen extending at least partially through the flexible body;
a first coil more rigid than the flexible body, comprising a first plurality of circular turns, the first coil configured to fit within the first lumen, and the first plurality of circular turns comprising a first diameter in a relaxed state;
a second coil more rigid than the flexible body, comprising a second plurality of circular turns, the second coil configured to fit within the second lumen, and the second plurality of circular turns comprising a second diameter in a relaxed state that is less than the first diameter;
wherein the docking device has a first configuration with a third diameter when the first coil is positioned within the first lumen;
wherein the docking device has a second configuration with a fourth diameter when the second coil is positioned within the second lumen, and wherein the fourth diameter is less than the first diameter and the third diameter.
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Accused Products
Abstract
Docking devices can be configured to be positioned at a native valve of a human heart to provide structural support for docking a prosthetic valve. The docking devices generally have coiled structures that define an inner space in which the prosthetic valve can be held. Some docking devices can be adjusted from a first wider configuration which facilitates easier advancement of the docking device around the valve anatomy, to a second narrower configuration after the docking device has been delivered to more securely hold the prosthetic valve. The docking device may also be better held in position at the native valve after adjustment to the narrower configuration. Some docking devices include a stabilization segment or double coil configuration, where a main coil region is configured to securely hold a prosthetic valve, while a stabilization coil region is configured to more stably hold the docking device at the native valve.
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Citations
16 Claims
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1. A docking device for docking a prosthetic valve at a native heart valve, the docking device comprising:
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a flexible body comprising an elongate tubular structure, a first lumen extending at least partially through the flexible body, and a second lumen extending at least partially through the flexible body; a first coil more rigid than the flexible body, comprising a first plurality of circular turns, the first coil configured to fit within the first lumen, and the first plurality of circular turns comprising a first diameter in a relaxed state; a second coil more rigid than the flexible body, comprising a second plurality of circular turns, the second coil configured to fit within the second lumen, and the second plurality of circular turns comprising a second diameter in a relaxed state that is less than the first diameter; wherein the docking device has a first configuration with a third diameter when the first coil is positioned within the first lumen; wherein the docking device has a second configuration with a fourth diameter when the second coil is positioned within the second lumen, and wherein the fourth diameter is less than the first diameter and the third diameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for replacing a heart valve, the system comprising:
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a replacement valve; and a docking device, wherein the docking device comprises; a flexible body comprising an elongate tubular, a first lumen extending at least partially through the flexible body, and a second lumen extending at least partially through the flexible body; a first coil more rigid than the flexible body, comprising a first plurality of circular turns, the first coil configured to fit within the first lumen, and the first plurality of circular turns comprising a first diameter in a relaxed state; a second coil more rigid than the flexible body, comprising a second plurality of circular turns, the second coil configured to fit within the second lumen, and the second plurality of circular turns comprising a second diameter in a relaxed state that is less than the first diameter; wherein the docking device has a first configuration with a third diameter when the first coil is positioned inside the first lumen; wherein the docking device has a second configuration defining an inner space having a fourth diameter when the second coil is positioned inside the second lumen, and wherein the fourth diameter is less than the first diameter and the third diameter; wherein the replacement valve comprises an expandable frame and a plurality of leaflets and is configured to be inserted in the inner space and expanded, the expandable frame defining an expanded outer diameter when in an expanded configuration; and wherein the replacement valve in the expanded configuration is configured to apply an outward pressure to the docking device sufficient to maintain a stable position of the replacement valve within the inner space of the docking device. - View Dependent Claims (13, 14, 15, 16)
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Specification