US Patent 10211586 Surgical shaft assemblies with watertight housings

A slip ring assembly is used with a surgical shaft assembly. The slip ring assembly includes a first housing portion, a first connector supported in the first housing portion, and a first conductor mounted on the first connector. The slip ring assembly also includes a second housing portion, wherein one of the first housing portion and the second housing portion is rotatable relative to the other, a second connector supported in the second housing portion, and a second conductor mounted on the second connector, wherein the second conductor is in contact with the first conductor. An interface between the first housing portion and the second housing portion, wherein the interface is configured to effect a seal between the first housing portion and the second housing portion.