Overhead arm assembly for patient bed

An overhead arm assembly for a patient bed, the overhead arm assembly comprising

• a first L-shaped arm having a first bottom end configured to couple to the patient bed,
• a second L-shaped arm,
• a third arm pivotably interconnecting the first and second L-shaped arms, and
• a patient interface unit suspended from a bottom region of the second L-shaped arm, wherein the overhead arm assembly has a use position in which the first and second L-shaped arms are pivoted with respect to the third arm such that the patient interface unit is suspended for use by a patient on the patient bed, wherein the overhead arm assembly has a transport position in which the first and second L-shaped arms are collapsed together such that the patient interface unit is situated adjacent a substantially vertical portion of the first L-shaped arm, wherein the overhead arm assembly has a T-shaped configuration in the transport position.