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|1. (WO2017061228) DEVICE FOR SURGERY AND SMOKE EVACUATION SYSTEM|
|Title:||DEVICE FOR SURGERY AND SMOKE EVACUATION SYSTEM|
This device for surgery includes: a trocar 12b which has a check valve on a base end and to which an air supply tube 9 is connected; a trocar 12c which also has a check valve on a base end and to which a suction tube 8 is connected; and a sheath 13 which has a hole 132 for passing through gas on a base end and has a ring-shaped sealing member 133 on a peripheral surface of the base end. The sheath 13 is inserted into at least one of the trocars 12b and 12c, and the sealing member 133 maintains airtightness between the sheath 13 and the trocar 12b or 12c into which the sheath 13 is inserted.