Medical trocars are used in many areas of medicine, including gynecology, urology, and surgery. They are also used in laparoscopic surgeries to create a puncture while maintaining the integrity of the surrounding tissues and subsequently inserting endoscopic instruments into the incision. Description: A trocar is a hollow, triangular tube equipped with a valve that prevents carbon dioxide leakage from the cavity. The endoscopic trocar also has a special carbon dioxide valve for insufflation and desufflation. A trocar is used in laparoscopy to create a surgical space and provide instrumental access to internal organs. Trocar use: The purpose of the instrument is determined by its internal diameter. For example, a universal 5mm trocar [https://eleps.ru/katalog/laparo-i-torakoskopiya-instrument-troakary-kanyuli-torakoporty-aksessuary-dlya-troakarov/] is most often used to insert instruments into the abdominal cavity. A universal 10mm trocar [https://eleps.ru/katalog/laparo-i-torakoskopiya-instrument-troakary-kanyuli-torakoporty-aksessuary-dlya-troakarov/] is used to insert an endocliper, laparoscope or other instruments of a similar diameter.