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Publication Number
US-11628064-B2
Publication Date
2023-04-18
Expiration Date
Abstract
Embodiments of the present disclosure include a cardiac device comprising a band configured for deployment within a heart. The band may include a first end and a second end, an actuatable clasp associated with the first end of the band and configured to transition, upon actuation, from an open configuration to a closed configuration for forming the band into a fixed length loop after the second end is moved beyond the clasp. The clasp may be configured for actuation via a catheter. The cardiac device may include a clasp retainer associated with the clasp, the clasp retainer being configured to hold the clasp in the open configuration and the clasp being configured to be actuated upon movement of the clasp retainer, and a clasp actuator configured to move the clasp retainer thereby actuating the clasp.
Core Innovation
The disclosure relates to a transcatheter papillary muscle repositioning cardiac device that includes a band with a first end and a second end configured for deployment within a heart. An actuatable clasp associated with the first end transitions, upon actuation, from an open configuration to a closed configuration for forming the band into a fixed length loop after the second end is moved beyond the clasp, and the clasp is configured for actuation via a catheter.
The device further includes a clasp retainer associated with the clasp. The clasp retainer is configured to hold the clasp in the open configuration and is moved to actuate closure, with a clasp actuator configured to move the clasp retainer thereby actuating the clasp.
To address ledge effect, the disclosure provides adjustable self-locking band geometry using sequential locking segments having ledged/ramped regions. The locking segments are described as flexing or aligning to reduce ledges during insertion into the clasp, including configurations with cone-shaped locking segments having ball-in-socket joints, bead/spacer-supported chains, tube-with internal locking segment embodiments, and hollow or indented locking segments.
The document also addresses clasp, band, and delivery visualization using radiopaque markers aligned for fluoroscopy to confirm proper insertion and clasp actuation. Delivery and actuator mechanisms described include pull wire and clasp retainer ring implementations, as well as catheter-actuated delivery-device mechanisms for clasp actuation and release.
Claims Coverage
Independent claim clm-00001 covers 4 core inventive features, supported by dependent claims that refine clasp structure, catheter interaction, and clasp retainer, actuation, and release behavior.
Catheter-actuatable clasp forming a fixed length loop
An actuatable clasp associated with the first end of the band transitions, upon actuation, from an open configuration to a closed configuration for forming the band into a fixed length loop after the second end is moved beyond the clasp, wherein the clasp is configured for actuation via a catheter.
Clasp retainer holding open configuration and moved for actuation
A clasp retainer associated with the clasp is configured to hold the clasp in the open configuration and the clasp is configured to be actuated upon movement of the clasp retainer; a clasp actuator moves the clasp retainer thereby actuating the clasp.
Fixed-length loop after second end passes clasp
The closed configuration forms the band into a fixed length loop after the second end is moved beyond the clasp.
Catheter-actuated clasp actuation via movement of clasp retainer
A clasp actuator moves the clasp retainer thereby actuating the clasp for the transition from open configuration to closed configuration.
Across the independent-claim core, the invention centers on a catheter-actuatable clasp and clasp retainer arrangement that transitions from open to closed to form a fixed length loop after the band second end passes the clasp, with claim refinements adding catheter-relative sizing constraints and cut-pattern/flap locking and disconnect behavior, as well as release coordination with the clasp actuator.
Stated Advantages
Reduces ledge effect during insertion by using adjustable self-locking band geometry with sequential locking segments having ledged/ramped regions.
Enables radiopaque visualization for fluoroscopy to confirm proper insertion and clasp actuation.
Documented Applications
Transcatheter papillary muscle repositioning within a heart using a band and actuatable clasp system.
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