Anchors and locks for percutaneous valve implants

1. Apparatus configured to lock an intrabody implant over a thread passing through the implant, the apparatus comprising:

a lock body configured to advance to the implant over the thread and comprising at least one rotatable element, the lock body being configured to grip the thread proximally to the implant upon rotation of the rotatable element,

wherein the lock body further comprises a block, and wherein the lock body is configured to grip the thread between the rotatable element and the block; and

a rotation-maintaining element, configured to inhibit a reversal of the rotation of the rotatable element by engaging with the lock body.

2. The apparatus according to claim 1 , wherein the lock body comprises a jagged surface, and wherein the lock body is configured to grip the thread with the jagged surface.

3. The apparatus according to claim 2 , wherein the rotatable element comprises the jagged surface.

4. The apparatus according to claim 1 ,

wherein the block is shaped to define a depression,

wherein the rotatable element is shaped to define a protrusion configured to fit into the depression upon the rotation of the rotatable element, and

wherein the lock body is configured to grip the thread between the protrusion and the depression.

5. The apparatus according to claim 1 , wherein the at least one rotatable element comprises a pair of opposing rotatable elements, and wherein the lock body is configured to grip the thread between the pair of opposing rotatable elements.

6. The apparatus according to claim 1 , wherein the rotation-maintaining element comprises a ring, configured to cause the rotatable element to rotate, and to inhibit the reversal of the rotation, by fitting over the lock body.

7. The apparatus according to claim 6 , wherein the lock body is shaped to define one or more notches, and wherein the ring is shaped to define respective tabs configured to fit into the notches.

8. The apparatus according to claim 6 , wherein the ring is configured to cause the rotatable element to rotate by fitting over the rotatable element.

9. The apparatus according to claim 8 , further comprising:

a hollow outer longitudinal element, configured to push the ring onto the rotatable element; and

a hollow inner longitudinal element, configured to advance the lock body over the thread while the thread passes through the inner longitudinal element and the inner longitudinal element passes through the outer longitudinal element, prior to the pushing of the ring onto the rotatable element.

10. The apparatus according to claim 9 ,

wherein the inner longitudinal element is shaped to define an aperture, and

wherein the ring is shaped to define a tab configured to fit into the aperture while the lock body is advanced over the thread.

11. The apparatus according to claim 9 , wherein the inner longitudinal element comprises a sharp distal edge configured to cut the thread subsequently to the pushing of the ring onto the rotatable element.

12. The apparatus according to claim 6 , wherein the lock body further comprises a shaft disposed next to the rotatable element, and wherein the ring is configured to cause the rotatable element to rotate by fitting over the shaft such that the ring pushes the rotatable element.

13. The apparatus according to claim 1 , wherein the rotation-maintaining element comprises a spring.

14. The apparatus according to claim 13 , wherein the rotatable element is shaped to define an aperture, and wherein the spring comprises a wire configured to spring into the aperture following the rotation of the rotatable element, thus inhibiting the reversal of the rotation.