The present invention relates to an abdominal cavity cutter for laparoscopic surgery and, more particularly, to an abdominal cavity cutter for laparoscopic surgery which is capable of preventing the cutter from being separated during using of the cutter while enabling the cutter to be simply replaced whenever using the cutter used in laparoscopic surgery. An abdominal cavity cutter for laparoscopic surgery according to the present invention includes: a blade part (100) including a cutting surface (120) for cutting a cutting target while using a laparoscope a fixing part (200) which adheres to or separated from the blade part (100) to connect or separate the blade part (100) a supporting rod part (300) which is removably and extendably formed on the fixing part (200), supports the fixing part (200), and is formed in a rod shape such that the blade part (100) is positioned close to the cutting target a holding part (400) which is extended and formed on the supporting rod part (300) and has a polygonal bar shape such that a user is capable of holding the holding part and a fastening spanner part (500) which is disposed such that the fastening spanner part (500) is projected to the outside from the inside of the holding part (400), and which assists in maintaining the state that the fixing part (200) and the supporting rod part (300) are fastened to each other while the fastening spanner part (500) is being rotated with the outer surface of the fixing part (200) being pressed by the fastening spanner part (500) when drawing out the fastening spanner part (500) from the holding part (400).COPYRIGHT KIPO 2016본 발명은 복강경 시술을 위한 복강 세절기에 관한 것으로, 더욱 상세하게는, 복강경 시술시에 사용되는 세절기를 사용시마다 간편하게 교체가 가능하면서도, 세절기가 사용중 분리되는 것을 방지할 수 있는 복강경 시술을 위한 복강 세절기에 관한 것이다.본 발명에 따른 복강경 시술을 위한 복강 세절기는, 복강경 사용중 절개대상물을 세절하기 위한 세절면(120)을 포함하는 칼날부(100) 상기 칼날부(100)가 결합 또는 분리될 수 있도록 칼날부(100)를 사이에 두고 상호 밀착 또는 이격되는 고정부(200) 상기 고정부(200)에 탈착가능하게 연장형성되면서 고정부(200)를 지지하고, 상기 칼날부(100)가 절개대상물에 근접하게 위치할 수 있도록 봉형태로 형성되는
