Overhead arm assembly for patient bed

1. 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.

2. The overhead arm assembly of claim 1 , further comprising a clip coupled to the substantially vertical portion of the first L-shaped arm, a substantially vertical portion of the second L-shaped arm being received by the clip when the overhead arm assembly is in the transport position.

3. The overhead arm assembly of claim 1 , wherein the third arm is situated above the first and second L-shaped arms, a first pivot joint assembly is provided at a first end of the third arm to pivotably interconnect the third arm and the first L-shaped arm, a second pivot joint assembly is provided at a second end of the third arm to pivotably interconnect the third arm and second L-shaped arm.

4. The overhead arm assembly of claim 3 , further comprising a first flexible pad attached to the first pivot joint assembly and a second flexible pad is attached to the second pivot joint assembly, the first and second pads serving as anti-skid feet when the overhead arm assembly is detached from the patient bed and turned upside down and resting on a floor for storage.

5. The overhead arm assembly of claim 1 , further comprising a strain relief attached to the substantially vertical portion of the first L-shaped arm and further comprising an electrical cable that is routed from the patient interface unit through the first and second L-shaped arms and the third arm and that exits the substantially vertical portion of the L-shaped arm behind the strain relief.

6. The overhead arm assembly of claim 5 , further comprising a first connector at a distal end of the cable, the first connector being configured to mate with a second connector included on the patient bed.

7. The overhead arm assembly of claim 6 , wherein the first connector is a 90 degree male D-sub connector.

8. The overhead arm assembly of claim 7 , wherein the second connector is a female connector situated on a downwardly facing surface of the bed such that the first connector is moved upwardly to mate with the second connector.

9. The overhead arm assembly of claim 1 , wherein the first bottom end of the first L-shaped arm includes a coupler configured to couple the first L-shaped arm to a frame of the patient bed and wherein the coupler includes a detent to control the position of the coupler relative to the frame of the patient bed.

10. The overhead arm assembly of claim 1 , wherein the patient interface unit includes a housing having a first side and a second side, wherein the patient interface unit includes a support structure positioned on the second side, the support structure being configured to support personal digital assistants of varying sizes, wherein the support structure includes a fixed base and a movable clamp, and wherein the movable clamp is movable relative to the fixed base with a locking mechanism resisting movement of the movable clamp away from the base.

11. The overhead arm assembly of claim 10 , wherein the movable clamp includes an actuator that releases the movable clamp for movement away from the base.

12. The overhead arm assembly of claim 11 , wherein the movable clamp comprises a first bias member that biases the locking mechanism to a locked position and a second bias member that biases the locking mechanism to a released position.

13. The overhead arm assembly of claim 12 , wherein first bias member has a bias that is greater than the second bias member.

14. The overhead arm assembly of claim 12 , wherein the first bias member comprises a torsional spring.

15. The overhead arm assembly of claim 14 , wherein the second bias member is integrally formed in the locking mechanism.

16. The overhead arm assembly of claim 10 , wherein the locking mechanism includes a lock that has a pair of arms, the arms formed to include catches, and the locking mechanism further includes guides that are each engaged by the respective arms.

17. The overhead arm assembly of claim 13 , wherein the guides include serrations engaged by the catches on the arms.

18. The overhead arm assembly of claim 1 , wherein the patient interface unit includes a first flex circuit overlay attached thereto, the first flex circuit overlay being selected from a plurality of different flex circuit overlays, the first flex circuit overlay having buttons for controlling a first set of features of the patient bed.

19. The overhead arm assembly of claim 18 , wherein the first flex circuit overlay includes a dead front nurse call button that is illuminated and visible in response to the patient bed being in communication with a nurse call system and that is not illuminated and substantially not visible in response to the patient bed not being in communication with the nurse call system.

20. The overhead arm assembly of claim 18 , wherein the first flex circuit overlay includes a stay in bed indicator that is illuminated in response to a bed exit or patient position monitoring system of the patient bed being enabled and that is not illuminated in response to the bed exit or patient position monitoring system of the patient bed not being enabled.