Using water as a knife is not the peerless magic in martial arts novels, but a medical device that can be used for surgery-a medical water knife. We know that high-pressure water guns can wash away dirt and high-pressure water jets can cut steel. But in medical operations, how can water be used as a knife? What kind of medical equipment is a medical water knife?
With water as a knife, it can be cut freely during the operation
Those who are familiar with the medical field should know that a medical device that doctors often use when performing surgery is called a medical high-frequency electrosurgical unit. It can cut and coagulate at the same time. It can be widely used in the operation of bleeding sites. However, in some operations that require selective tissue separation and segmentation, not only high-frequency electrosurgical knives, but also ultrasonic knives and laser knives are powerless.
As a result, a new type of medical equipment "medical water jet" came into being. It not only has the ability of general conventional surgical instruments to cut human soft tissues, but also has the ability to selectively separate and segment tissues, and it does not generate heat during the operation and does not cause thermal damage to the tissues.
"In layman's terms, the'water knife' is to use water as a knife. Through precise control of the pressure on the water, the water produces different cutting forces, and the different resistance, toughness and elasticity of various organs to the water pressure are used to achieve this cutting force. It’s not necessary to cut it without any damage.” Taking liver surgery as an example, using a medical water knife can cut the liver tissue without cutting the blood vessels in the liver.
It is reported that waterjet cutting technology has been widely used in industry, but medical waterjet technology factories have long been monopolized by foreign countries, and only two foreign companies in the world have mastered "medical waterjet" technology. It takes about 1.5 million yuan to import a medical water knife in China, and the consumables used once are 18,000 yuan, which is very expensive.
