Medical pendant arm system and rotation shaft used for the same
A medical pendant assembly has an anchor plate that is attachable to a roof structure and a first rotation shaft that includes a shaft outer ring, a shaft inner ring, and a ball spacer sleeve. The ball spacer sleeve is disposed between the shaft outer ring and the shaft inner ring. A lower portion of the shaft outer ring includes a first flange. An upper portion of the shaft outer ring includes a second flange. The second flange of the first rotation shaft is either attached directly to the anchor plate or attached to the anchor plate via an extension assembly. A first arm is attached to the first flange of the first rotation shaft.
1. A medical pendant assembly, comprising:
an anchor plate that is attachable to a roof structure; and
a rotation shaft that includes a shaft outer ring, a shaft inner ring, and a ball spacer sleeve;
wherein the ball spacer sleeve is disposed between the shaft outer ring and the shaft inner ring;
wherein a lower portion of the shaft outer ring includes a first flange;
wherein an upper portion of the shaft outer ring includes a second flange;
wherein the second flange of the rotation shaft is either attached directly to the anchor plate or attached to the anchor plate via an extension assembly;
wherein a first arm is attached to the first flange of the rotation shaft; and
wherein a brake is disposed at the first flange;
the medical pendant assembly further comprising a rotation shaft cover disposed outside the rotation shaft, the rotation shaft cover including an upper rotation shaft cover, a lower rotation shaft cover, and a circular groove that is disposed between the upper rotation shaft cover and the lower rotation shaft cover; wherein the circular groove includes a brake indicator lamp.
2. The medical pendant assembly of claim 1 , wherein the brake is an electromagnetic brake or an air-bag brake.
3. The medical pendant assembly of claim 1 , wherein:
the brake is a mechanical brake; and
a periphery of the mechanical brake includes threads configured to be screwed into a threaded hole of the first flange.
4. The medical pendant assembly of claim 1 , wherein:
the brake is a mechanical brake; and
the brake includes a threaded portion, a friction head, and a disc spring disposed between the threaded portion and the friction head.