System for mitral valve repair and replacement

摘要

Systems for mitral valve repair are disclosed where one or more mitral valve interventional devices may be advanced intravascularly into the heart of a patient and deployed upon or along the mitral valve to stabilize the valve leaflets. The interventional device may also facilitate the placement or anchoring of a prosthetic mitral valve implant. The interventional device may generally comprise a distal set of arms pivotably and/or rotating coupled to a proximal set of arms which are also pivotably and/or rotating coupled. The distal set of arms may be advanced past the catheter opening to a subannular position (e.g., below the mitral valve) and reconfigured from a low-profile delivery configuration to a deployed securement configuration. The proximal arm members may then be deployed such that the distal and proximal arm members may grip the leaflets between the two sets of arms to stabilize the leaflets.

主权项

1. A system for the treatment of conditions affecting a native mitral valve, the native mitral valve having a native annulus and native leaflets, and the system comprising:
a proximal stabilizing structure having a first pair of first arm members pivotally coupled to a second pair of second arm members at joints between individual first arm members and individual second arm members to move between a low-profile axially-elongated configuration positionable in the lumen of the catheter and a laterally-elongated configuration in which the proximal stabilizing structure is configured to engage tissue of a native valve, wherein, in the laterally-elongated configuration, (a) the joints are spaced laterally apart from each other by lengths of the first and second arm members, and (b) each second arm member has a lower surface configured to extend along and engage a periphery of an atrial surface of the native mitral valve annulus; and a distal stabilizing structure having a third pair of third arm members pivotally coupled to a fourth pair of fourth arm members at joints between individual third arm members and individual fourth arm members to move between the low-profile axially-elongated configuration and the laterally-elongated configuration in which the distal stabilizing structure is configured to engage tissue of the native valve, wherein, in the laterally-elongated configuration, (a) the joints are spaced laterally apart from each other by lengths of the third and fourth arm members, and (b) each third arm member has an upper surface configured to extend along and engage a periphery of a ventricular surface of the mitral valve annulus behind the leaflet;
wherein the lower surfaces face the upper surfaces so as to clamp the mitral valve annulus therebetween in the laterally-elongated configuration.