US Patent 9974653 Implantation of repair devices in the heart

Apparatus is provided, including an intracardiac annuloplasty structure configured for placement on an annulus of a heart valve, a first rotatable ring coupled to the annuloplasty structure and a second rotatable ring coupled to the annuloplasty structure. The first and second rotatable rings are arranged such that the first rotatable ring is rotatable to contract the annuloplasty structure while the second rotatable ring remains stationary, and the second rotatable ring is rotatable to contract the annuloplasty structure while the first rotatable ring remains stationary. Other embodiments are also described.