Surgical light

The surgical shadowless light is a vital light source in the operating room, directly related to the operation effect. In this quick guide, we discuss some of the key points in choosing the operating lights.

First of all, we need to understand how surgical light is used under normal circumstances.
During the preparation phase, the nurse (or doctor) moves the surgical light to the approximate position of the operation area. The doctor usually stands under the operating light with the back of the head facing the lamp cap, and then reach out to hold the sterile handle in the middle of the lamp cap, while watching the light spot formed by the convergence of the light in the surgical area. Slowly adjust the position of the lamp head until the surgical field becomes more satisfactory and bright for users.

surgical light

Generally, the position of the operating light won’t be moved after starting the operation. However, when the incision depth and position of the surgical field changes, it needs to be adjusted. At this time, the doctor could fine-tune the position of the lamp holder through the sterile handle to obtain clearer surgical field lighting. After a long-term operation is over, the nurse (or doctor) removes the lamp cap to the outside of the operation area, unloads the sterile handle, and disinfects it.

As can be seen from the above process, the main users of surgical shadowless lights are doctors and nurses. Before and after each operation, the nurse needs to move the surgical shadowless light a long distance. During the operation, whether the surgeon or the assistant, they basically stand under the shadowless light, and has close contact with the surgical light for a long time.

The following three aspects should generally be considered when choosing the right operating light for surgery.

Safety of the Surgical Light

Safety is always the most important indicator of medical equipment. The safety here not only refers to the product itself but also includes the safety of the product for users and objects.

The safety of the product itself will not be detailed here since the current domestic and foreign standards involved in surgical lights are pretty mature. Most manufacturers have generally higher standards for the delivery of medical devices, so the safety of the product itself rarely arises.
However, it is not uncommon that the installation is improper due to the overly complex design, or inadequate training, causing problems during use.

For example, in the two most common situations, some halogen lamps suddenly flicker, go out, or dim during the operation, resulting in the blurred and unclear surgical field. Most of the cases are due to the failure to replace the halogen bulbs or connectors in time. In addition, the cantilever component cannot be fixed in place. The lamp head cannot be accurately positioned due to drift during the operation, which is mainly caused by the cantilever component or the mounting and fixing component not being installed in place.

It is foreseeable that if the surgical field is blurred or the surgical field spot drifts during the operation, the impact on the surgeon will be significant, and it may directly or indirectly cause the failure of the operation and bring unimaginable consequences. Therefore, safety awareness needs to be taken seriously during the operation.

Suitable Lighting Environment

In addition to safety, a good lighting environment is of great importance. During the operation, the doctor spends more than 90% of the time staring at the surgical field intently, and most of the other medical staff also check the situation in the surgical field. A suitable lighting environment allows medical staff to “see clearly and see for a long time.” For surgery, ‘see clearly’ can be interpreted as undistorted colors, distinguishable tissues and organs, without shadows.

During the operation, the color remains unchanged for a long time. If not, for example, the original red is changed to other colors after being illuminated by a light source, it will inevitably cause the doctor to make a mistake in judgment. When the incision is deep, the organs and blood vessels are easy to stick together with similar color, which is hard for doctors to distinguish. Besides, due to the occlusion of surgical instruments, a part of the shadow may be formed in the deep cavity, obstructing the doctor’s sight.

Convenient, Flexible and Accurate

Shadowless light

Before and after the operation, the lamp cap needs to be able to move in and out of the operation area quickly and conveniently; during the operation, the angle and position of the lamp cap can be flexibly adjusted according to the needs of the doctor. 

In general, the lamp cap of the surgical shadowless light is relatively large in size and weight. Therefore, high design demand for lamp cap and the cantilever assembly is required to achieve convenient, flexible, and accurate operation. The lamp cap should be small in volume and weight as much as possible under the premise of providing a suitable lighting environment. In terms of appearance design, it is necessary to lower the impact on the purification laminar flow as much as possible. The cantilever assembly should be safe to carry the lamp cap to ensure its convenient movement, flexible rotation and accurate positioning, and do not occupy space as much as possible.

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