A hub assembly for a robotically driven interventional device can include an interventional device hub having an interventional device and at least one magnet. The hub assembly can be configured to be positioned on a sterile side of a sterile field barrier and magnetically couple to a hub adapter on a non-sterile side of the sterile field barrier so that hub assembly moves axially in response to axial movement of the hub adapter and the at least one magnet of the hub assembly rotates in response to rotation of at least one magnet of the hub adapter.

Disclosed herein are lock mechanisms configured for locking and unlocking rotation of a driver and a driven gear system in implantable distraction and compression systems, and implantable medical devices and implantable distraction and compression systems including such lock mechanisms. The lock mechanisms include a keeper that is configured to move from a locked position to an unlocked position in response to a rotation of the driver, wherein, in the locked position, the keeper is configured to resist rotation of the driven features and the driver under a load on the driven features, and in the unlocked position, permits rotation of the drive gear and the driver.