Why does a doctor need to cover the operation with cloth through a hole to operate on?

When I was a little doctor, I had the same problem.

We all know that surgery needs to be sterile, right? what is aseptic? That means no bacteria. I was just learning when I was thinking, how can this be!

Knowing the operation brushes that I learned, put a finger on a petri dish with my finger, and after the bacteria had been cultured for 5 days, the laboratory told me to rest assured! No bacteria! Clean!

At that time I had an intuitive understanding that the operation was really sterile.

So it’s not possible to see every potential bacterium in an operation. How can we ensure that the field of vision is completely sterile?

There is a principle in the operating room that the air is laminar, so it is difficult for bacteria to “float” through the air into the incision, doctors and nurses are wearing masks and hats, and bacteria in dandruff and saliva are difficult to fall in. Then the only way to spread bacteria is to be left.


As long as there is no contact, the aseptic will always be aseptic, but only the basic knowledge of aseptic surgery (in a certain period of time, can be guaranteed).

Imagine what if we didn’t use the cloth to surround the area? Did our hands touch the clothes of the patient? Are we and our teammates absolutely sterile? It’s hard to judge.

But if you do.


After we’ve completely disinfected, we’ve completely enclosed the surgical area with a list, and you can get a fairly large sterile area, basically the whole body of the patient is covered with a green cloth, you can gently lean on the patient, and you can put your hand on the patient’s leg. Even some devices (such as pliers, scissors, etc.) can be placed on patients for a short period of time, easy to use.

As long as the green cloth is not soaked with blood, the top of the green cloth will always be sterile. If you get the green cloth wet by careless blood, you need to cover it with a green cloth.

In short, green cloth is the most appropriate way to ensure that sterile areas are the best way to ensure that health care workers are aware of the situation and that everyone is aseptic in the process of operation.

So, it’s not afraid of patients peeking.

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