Lock for medical devices, and related systems and methods

A lock for positioning a first medical device with respect to a second medical device, the lock comprising:

• a spacer for allowing partial advancement of the first medical device towards the second medical device, the spacer being elongate and having a first abutment surface and a second abutment surface spaced apart along a longitudinal axis of the spacer, wherein the spacer is movable between a lock position and an unlock position, wherein in the lock position the spacer is moved transverse to the longitudinal axis with respect to the unlock position;
• and
• a clip integral with the spacer and removably securable to the first medical device in a first position to secure the spacer in the unlock position, and removably securable to the first medical device in a second position to secure the spacer in the lock position, wherein the clip comprises a tongue extending orthogonally from the spacer and defining a slot for receiving a portion of the first medical device, and the tongue comprises a first detent engageable with the portion of the first medical device to secure the spacer in the unlock position, and a second detent spaced from the first detent and engageable with the portion of the first medical device to maintain the spacer in the lock position.