Heart valve clip

Inventors

Wallace, Daniel T.

Assignees

Capstan Medical Inc

Abstract

A valve repair device, e.g., for treating mitral valve regurgitation, includes a tubular body defining a longitudinal axis, paddles supported by the tubular body and movable to change abduction of the paddles relative to the longitudinal axis, and retention members supported by the tubular body proximal the paddles and similarly movable to change abduction of the retention members relative to the longitudinal axis to facilitate capture of native valve leaflets between pairs of paddles and retention members. Movement of the paddles and/or retention members is provided by one or more control mechanisms including a collar a shaft extending within the tubular body. Each shaft is threadedly engaged to a respective collar and coupled to one or more of the movable elements such that, when the collar is rotated, the shaft translates to change abduction of the movable element relative to the longitudinal axis.

Core Innovation

The invention relates to a valve repair device configured to attach to a native valve of a patient for mitral regurgitation. The device includes a tubular body defining a longitudinal axis, with a paddle supported by the tubular body and movable to change abduction of the paddle relative to the longitudinal axis. The device further includes a retention member supported by the tubular body proximal the paddle, with the retention member movable to change abduction relative to the longitudinal axis to facilitate capture of a valve leaflet between the paddle and the retention member.

The abduction changes are driven by a paddle control mechanism and, optionally, a retention member control mechanism. Each control mechanism includes a rotatable collar extending within the tubular body and a shaft extending within the tubular body. The shaft is threadedly engaged to the rotatable collar and coupled to the corresponding paddle or retention member, such that rotation of the collar translates the shaft and translates the paddle or retention member to change abduction relative to the longitudinal axis.

The invention also covers multiple actuation relationships and structural configurations that use the collar-and-threaded-shaft drive. Embodiments include concentric and radially offset arrangements of collars, including concentric collars and collar placement where one collar extends radially inward of another. Additional embodiments include independent vs simultaneous actuation of multiple paddles and/or multiple retention members, and retention-member features that engage leaflet tissue, with coupling to a drive component via a suture loop.

Claims Coverage

The partial content provides three independent claims covering valve repair devices for a native valve with collar-and-threaded-shaft translation to change abduction, including configurations with single vs multiple paddles/retention members and actuation relationships. Each independent claim includes multiple inventive features, primarily in how the collar and threaded shaft translate to adjust abduction to facilitate capture of a valve leaflet.

Across the independent claims, the claim coverage centers on translating abduction relative to a longitudinal axis using rotatable collars with threadedly engaged shafts that couple to a paddle and/or a retention member, to facilitate capture of a valve leaflet between the paddle and the retention member. The independent claims additionally cover configurations with multiple paddles and retention members, and include both simultaneous and single-component movement relationships.

Stated Advantages

Documented Applications