After hearing this, I seemed to understand a little bit, but also seemed to understand a little bit. A tangled expression flashed on the patient's face.
This situation once again tests a doctor's ability to touch the patient's brain.
"I think what you are confused about is where exactly this place is located. Having said so much, it is difficult to imagine it without an actual reference object." Xie Wanying said.
Lin Jiayin nodded: "Yes. Doctor Xie, where is it? When you say the bottom, do you mean the bottom of the brain?"
"It's the bottom, the bottom of the cup." Xie Wanying picked up a cup on the table and pointed to the bottom to show the patient, emphasizing that the patient heard correctly.
The patient's expression showed confusion again: "It's at the bottom of my head, isn't it right here on the chin?"
Sure enough, this is what ordinary people understand. The bottom of the head is the chin.
The bottom of the skull is definitely not at the chin. The chin is the lower part of the mouth. We know that the mouth continues to be the throat, esophagus, and trachea, and has nothing to do with brain tissue.
"When we touch the back of the head, it is the occipital bone. The front point of the occipital bone is the two temporal bones, and the temporal bone is further forward and connected to the sphenoid bone in the middle. The part of the mouth is the mandible, and the famous temporomandibular joint is connected to the temporal bone upward. Look at the height of the mandible
It almost reaches the ears. So, to be more precise, the sphenoid bone does not reach the horizontal line of the disc body in the middle of the chin. It needs to be lifted up closer to the nose. There is an important structural point inside the sphenoid bone called the sphenoid sinus.
Connected to the nasal cavity."
After a doctor compared and explained with specific and intuitive reference objects, the non-medical people at the scene suddenly became enlightened. Usually laymen understand that most of the horizontal lines of the brain should reach the chin, which is wrong. In fact, you can know by touching the back of a person's head.
If you walk diagonally upward, most of the brain tissue is destined to fail to reach the lower parts, that is, the cerebral hemispheres cannot reach it.
The brain and the nose are connected, so it is not too difficult to understand.
Because we mentioned before that patients with brain trauma have cerebrospinal fluid rhinorrhea. If you think that cerebrospinal fluid usually does not flow out from other places but only from the nasal cavity, there must be some mystery of the human body here. Now the answer has been revealed, it is due to the sphenoid sinus.
The sphenoid sinus is a cavity that communicates with the nose. The sphenoid bone is the brain inside the skull, so the sphenoid sinus naturally becomes a natural window connecting the brain and the nose.
On the other hand, there is a natural opening like the sphenoid sinus that leads to the outside world through the nose. There seems to be a natural hole in front of the doctor, forming a hole that can be drilled. Through this hole, one can directly access the brain that is densely wrapped by the skull without opening the skull.
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The opening of the sphenoid sinus is very small, and the doctor cannot enter it with bare hands. It is located deeper than the nose, and the doctor's eyes cannot see it. The doctor can only use special surgical instruments if he wants to drill through this small hole.
This kind of surgical method sounds very familiar. Yes, we can quickly think of other human body surgeries with similar surgical principles and methods, such as gastroscopy surgery and colonoscopy surgery. This type of surgery uses the natural openings of the human body to access the inside of the human body.
There is no need to use a scalpel to make an opening in the human body.
The instrument used for gastroscopy is called a gastroscope, the instrument used for colonoscopy is called a colonoscope, and by analogy, the instrument used for surgery through the nose is called a nasal endoscope.
From what has been said above, we can know that nasal endoscopy can perform nose surgery and brain surgery.