Tissue anchors with hemostasis seal

Apparatus comprising:

• a deployment tool;
• and
• an implant configured to be delivered in the deployment tool to a cardiac chamber, and comprising:
• a tissue anchor configured to be delivered in a constrained state within the deployment tool, the tissue anchor comprising a shaft, wherein a distal portion of the tissue anchor extends from a distal end of the shaft and is configured to be advanced through an incision in a wall of the cardiac chamber and be coupled to a far outer side of the wall;
• a seal;
• and
• a spring, which is disposed proximal to the seal, and which is configured to distally push the seal against an inner side of the wall to seal the incision,
• wherein the tissue anchor, the seal, and the spring are configured to be entirely released from the deployment tool upon deployment of the implant from the deployment tool.

Apparatus for use with a deployment tool, the apparatus comprising:

• a tissue anchor configured to be delivered in a constrained state within the deployment tool, the tissue anchor comprising a shaft, wherein a distal portion of the tissue anchor extends from a distal end of the shaft and is configured to be advanced through an incision in a wall of a cardiac chamber and be coupled to a far outer side of the wall;
• a seal;
• a spring, which is disposed proximal to the seal, and which is configured to distally push the seal against an inner side of the wall to seal the incision;
• a flexible elongate tension member fixed to the distal portion of the tissue anchor, wherein the flexible elongate tension member passes through the seal and the spring;
• and
• one or more tethers coupled to the tissue anchor.