Operating light construction

Regarding the products’ construction and composition, the “Guidelines for the review of operating light registration technology” points that: Operating lights are different according to their usage, installation method, optics principles and light source. Generally, operating light has 3 compositions: light head, hanging arm and base, camera and monitor are optional. It composition is as below:

For your better understanding, we can refer to Mingtai LED760/560 operating light, it is classic double domes operating light.

Now double domes operating light is the first choice for most hospital: one is main light, supporting main lighting; another is auxiliary light, supporting auxiliary lighting, making up main light’s lighting blind zone. Besides, the auxiliary light can be used in time when the main light failed.

1.      Light head

It is operating light head part, support shadowless condition for surgery field. Most manufacturers’ head design is different according to different working principle, sometimes it will equip with other special functions. So light head is the core part for operating light.

The light head we talked generally includes 2 parts: light head and universal joint, universal joints is the bent pipe which connect light head and spring arm. Generally 2 bent pipes will be used, as above picture, light head can be rotated along 3 axial leads (light head and bent pipe joint, 2 bent pipes joint, bent pipe and spring arm joint) by 2 bent pipes’ rotation, convenient for surgery light’s adjustment.

2.      Hanging arm

Hanging arm consists of 2 parts: rotary module and spring module.

Rotary module connects base and spring module, including central axis and rotation arm. Above picture is classic double dome operating light, central axis is the vertical bar in the red frame. 2 rotation arm installed under it. With this construction design, rotation arm can rotate 360° along with central axis. In general, max 4 rotation arms can be installed on central axis, light head, monitor and camera can be equipped. And the arm length is not settled, if you have high space requirement, customized arm length can offer you better choice.

Spring arm is link mechanism which connect rotation arm and light head, reciprocating motion shown as above picture can be achieved by it, and 2 end connecting rods’ direction will not change during movement. And inner spring structure can make sure that the spring arm can bear certain weight. So the light head’s position can be adjusted easily by using spring arm.

It can be seen that by hanging arm which composed by rotary module and spring module, not only horizontal rotation can be achieved, vertical reciprocating motion also can be achieved, with the light head universal joint, all those improve operating light’s mobility.

3.      Base

Generally base is designed as long hanging tube, connecting flange in the end. Flange connect hidden parts which are in the ceiling space, another hanging tube side sticks out ceiling space, connects with rotation joints. The red frame showed in the above picture is the stick out hanging tube. Round cover is installed to hidden inner construction.