Patent ID: 8529591

Claim:
An anastomotic instrument comprising: a first unit attached to an insert section of an endoscope to be inserted into an alimentary canal on a side of a distal end of said insert section; a second unit set on said insert section on a side of a proximal end of said insert section relative to said first unit; a suction device for sucking out fluid from space enclosed by said first and second units in said alimentary canal so as to bring said space into negative pressure, and shrinking said alimentary canal in said space; a resecting device for shifting one of said first and second units relative to the other one of said first and second units, and resecting living body tissue of said alimentary canal in a state of being caught between said first and second units; and a fastening device for joining said alimentary canal so as to close an incision of said living body tissue, wherein said first unit has a first through hole that penetrates from a proximal end to a distal end of said first unit and has an inner diameter substantially equal to an outer diameter of said insert section, and wherein said second unit has a second through hole that penetrates from a proximal end to a distal end of said second unit and has an inner diameter substantially equal to said outer diameter of said insert section.