Endoscope with double joint knives won the national invention patent authorization
November 02, 2016 Source: China Food and Drug Network
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The "double joint sickle knife" developed by Professor Liu Bingrong, director of the Department of Gastroenterology, the Second Affiliated Hospital of Harbin Medical University, Heilongjiang Province, recently obtained the national invention patent authorization.
Professor Liu Bingrong took the lead in changing the endoscopic special cutting knife from a straight knife to a machete. The purpose is to make the operation of digestive endoscopic minimally invasive surgery more convenient and reduce the risk of secondary damage to the surrounding tissue.
At present, endoscopic mucosal dissection has become an important means to curb early gastrointestinal cancer and precancerous lesions. It has been recognized by doctors and patients for its advantages of small trauma, ability to retain organs, and rapid postoperative recovery. However, such surgery has high requirements on the operation technique, and improper operation may cause risks such as perforation. This limits the wide-ranging application of the procedure.
It is understood that the existing endoscopic special cutting knives are straight knives, which can not change the angle freely. When the spatial position of the blade body and the surgical field plane exceeds a certain angle, the difficulty of controlling the electric cutting by the doctor is greatly increased, which is easy to cause the depth of cut or even perforation. Waiting for danger. At the same time, because the blade is rod-shaped, the doctor must perform the endoscopic movement to achieve the cutting, which also increases the difficulty and risk factor of the operation.
In response to the above bottlenecks, Professor Liu Bingrong skillfully designed a double joint knives that can flexibly adjust the angle and spatial position. Except that the cutting surface is made of metal, the other surfaces are tightly wrapped with ceramic materials. Its two rotatable joints allow multiple angles of movement of the cutting face without the lens limitations, helping to reduce operating time.
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