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US 11,684,474 B2Granted
Delivery system for aided replacement valve recapture and repositioning post-deployment
AssigneeEdwards Lifesciences Corporation
InventorsHarish Manickam Srinimukesh, Travis Zenyo Oba, David Robert Landon, Glen T. Rabito
Life of this patent
Estimating the term…
Abstract
Disclosed herein are embodiments of a delivery system which can be used to recapture and/or reposition a replacement valve, such as a replacement mitral valve, after initial deployment of the valve. Embodiments of the disclosure can use the crimping/tensioning of sutures in order to re-crimp the replacement valve after release, though longitudinal or rotational forces.
Claims15
A delivery system for a replacement valve, the delivery system comprising:
- a tether configured to releasably hold a replacement valve;
- a torqueing manifold configured to retain a first end of the tether;
- an engagement pin configured to move from a locked position to an unlocked position, the engagement pin configured to releasably retain a second end of the tether;
- a manifold shaft having the torqueing manifold on a distal end of the manifold shaft, the torqueing manifold having at least one protrusion extending distally from a distal end of the torqueing manifold;
- a bearing rotatably retained within the torqueing manifold;
- and
- a pin lock shaft having a release plate located proximal of the bearing and located on a distal end of the pin lock shaft, wherein the pin lock shaft is configured to engage the engagement pin in the locked position and the unlocked position;
- wherein longitudinal translation of the engagement pin from the locked position to the unlocked position releases the second end of the tether and the replacement valve from the delivery system;
- and
- wherein rotational movement of the torqueing manifold with respect to the engagement pin is configured to crimp or uncrimp a portion of the replacement valve.
7 more elements
A method of releasing a replacement valve from a delivery system, the method comprising:
- expanding the replacement valve from a compressed configuration to an expanded configuration, the replacement valve having a distal end and a proximal end, the replacement valve releasably attached to a manifold of the delivery system at a location distal to the replacement valve through at least one tether releasably retained on an engagement pin connected to the manifold in a locked position;
- rotating a manifold shaft located radially inwards of the replacement valve in a first direction with respect to a locking shaft, wherein the manifold shaft has the manifold on a distal end located distal to the replacement valve, wherein the at least one tether is connected to the manifold and the locking shaft, and wherein the manifold shaft is located within a lumen of the locking shaft, wherein the rotating the manifold shaft in the first direction loosens the at least one tether to uncrimp the distal end of the replacement valve;
- and
- proximally translating the engagement pin from the locked position to an unlocked position outside of the manifold, thereby releasing the at least one tether and the replacement valve.
1 more element
Dependencies are inferred from the claim text.