Tissue anchor for annuloplasty device

A tissue anchor for use with a valve-repair implant configured to be coupled to cardiac tissue of a patient, the tissue anchor comprising:

• a distal tissue coupling element configured to couple the tissue anchor to the cardiac tissue of the patient;
• and
• a proximal implant-penetrating element configured to penetrate at least a portion of the valve-repair implant and facilitate coupling of the valve-repair implant to the tissue anchor, the proximal implant-penetrating element comprising:
• a post;
• and
• an implant-restraining element coupled to a portion of the post, the implant-restraining element being configured to restrain the valve-repair implant from separating from the implant-penetrating element, wherein the implant-restraining element has a greatest cross-sectional area that is at least 1.5 times a greatest cross-sectional area of the post.

A tissue anchor for use with a valve-repair implant configured to be coupled to cardiac tissue of a patient, the tissue anchor comprising:

• a distal tissue coupling element configured to couple the tissue anchor to the cardiac tissue of the patient;
• and
• a proximal implant-penetrating element configured to penetrate at least a portion of the valve-repair implant and facilitate coupling of the valve-repair implant to the tissue anchor, the proximal implant-penetrating element comprising:
• an implant-restraining element configured to restrain the valve-repair implant from separating from the implant-penetrating element, wherein the implant-restraining element comprises a barb, the barb:
• comprising one or more arms that are radially expandable to rest against an external surface of the implant following coupling of the implant to the implant-penetrating element, and
• configured to restrict proximal movement of the implant along the implant-penetrating element.