Disposable non-valved trocars are commonly used surgical trocars for laparoscopic surgery. The valveless trocars consist of an obturator and a sleeve. The sleeve is composed of a cannula, an inner seal and a durable universal seal. The valveless design can avoid air leakage during the operation. It is intended for use in a variety of gynecological, general, thoracic, and urological laparoscopic procedures to create and maintain access channels for laparoscopic instruments. This surgical trocar is available in 3 sizes.