How to Choose an Operating Room Class? A Guide to Lighting and Bed Tower Configurations

When you walk into a hospital operating room, you’ll notice that the equipment and configurations vary from room to room. Some are capable of performing high-risk surgeries such as coronary artery bypass grafting and brain tumor resection. In contrast, others are suitable only for minor procedures such as appendectomies and cesarean sections. The key distinction lies in the operating room’s cleanliness grade. As a professional manufacturer with 27 years of experience in the operating room equipment sector, Weyuan Medical has provided overseas distributors with comprehensive lighting and bed tower solutions that meet the standards for various cleanliness grades.

Some may view the surgical lights on the operating table and the medical towers beside them as merely auxiliary equipment, unaware that an incorrect selection can trigger a series of chain reactions. (Not only does it compromise the clean environment, but it also hinders the surgeon’s procedures and may even increase the risk of infection.)

I.What are the common classifications of operating room grades? What exactly distinguishes operating rooms of different grades?

Common operating room grades include Class 100, Class 1,000, and Class 10,000. The core differences among these three lie in cleanliness standards, applicable surgical procedures, airflow, and material configurations. In simple terms, “the lower the grade number, the higher the cleanliness requirements and the higher the cost.” See the table below for detailed comparative data:

II. Why is it crucial to clearly distinguish between operating room classifications and select the appropriate lighting and bed towers?

1. The risk of infection during surgery is directly related to the number of airborne particles and microorganisms. Therefore, the risk of surgical contamination determines the “threshold” for cleanliness requirements.

2. Using a Class 10,000 operating room for organ transplant surgery poses an extremely high risk; conversely, using a Class 100 operating room for minor surgeries results in a waste of costs and resources (the construction cost of a Class 100 operating room is 3–5 times that of a Class 10,000 operating room).

3. Incorrect configuration or placement of the surgical light and bed tower can compromise the cleanliness “defense line.” (If the temperature of the surgical light rises too high, it may affect tissue viability at the surgical site; if positioned in the airflow path, it can disrupt airflow direction, creating “localized vortices” that cause dust and bacteria to accumulate near the operating table. If the medical bed tower is not made of antimicrobial material, it can become a “hotspot for dirt and bacteria.”)

III. What type of lighting and bed tower configuration are appropriate for operating rooms of different classes?

First, the operating room class must be taken into account; second, the following three risk factors must be carefully evaluated: whether the materials are antimicrobial, whether airflow is disrupted, and whether the functionality is appropriate. Weyuan Medical strictly adheres to the above classification standards, and all products undergo cleanroom compatibility testing before leaving the factory to ensure that, once installed, they do not disrupt airflow or introduce contamination.

1. Class 100 Operating Room Standards: Functions must be perfectly tailored with zero interference.

In addition to ensuring that “airflow is not disrupted and no contamination is introduced,” the light and bed tower must also meet the following requirements:
The surgical light must be a “cold-light shadowless lamp” with an illuminance of ≥150,000 lux to ensure a clear surgical field of view; the temperature rise must be ≤0.5°C, and the light must be treated to prevent glare.

Medical bed towers must be “flush-mounted,” with medical gas outlets protruding no more than 5 mm from the wall; if used for cardiovascular angiography, they must include 3 mm thick lead shielding (for radiation protection), and the material must comply with the JIS Z2801:2010 antibacterial standard (antibacterial rate ≥99%) to prevent bacterial growth.

2. Class 1,000 Operating Room Standards: Balancing Cleanliness and Cost-Effectiveness.

Surgical lights must meet the following requirements: illuminance ≥ 150,000 lux to ensure “no blind spots in the light coverage”—featuring a design with no exposed screws; the connections at the light arms must be sealed to prevent dust accumulation and allow for direct wiping with alcohol.

Medical bed towers must meet the following requirements: Gas outlets must be “centrally arranged around the operating table,” with ≥4 ports on each side (to accommodate simultaneous use of multiple instruments), and a spacing of ≥30 cm between ports. The bed frame must be made of 304 stainless steel; recessed installation is not required, but the bed must be positioned ≥30 cm from the wall.

3. Class 10,000 Operating Rooms: Prioritize practicality and ease of operation.
Surgical lights must meet the following requirements: illuminance ≥ 100,000 lux, uniformity ≥ 0.6; cold-light types are not required, but the temperature rise must be ≤ 5°C; “split-type” lamp bodies are acceptable.

Medical bed towers should meet the following requirements: Gas outlets should follow the “basic configuration”—2 outlets each for oxygen, negative pressure, and air; materials must be resistant to disinfection; and parts in contact with the floor must have a slip-resistant finish.

If you are planning to build or upgrade an operating room and are unsure which configuration to choose, Weyuan Medical can provide a professional solution based on your on-site layout and the appropriate grade requirements. Please feel free to contact us for a customized proposal.