Anastomotic device

An anastomotic device for the formation of anastomoses, comprising:

• an introducer sheath configured for insertion into a body lumen;
• a head section at a distal end of the introducer sheath, the head section including an annular housing defining outlets for ejecting respective fasteners therethrough, and an annular guide lumen including inner and outer walls defining an annular channel between them and concentrically disposed with the head section, and a retaining pin movable within the annular guide lumen, the outer wall radially spaced apart from the annular housing:
• an actuating part at a proximal end of the introducer sheath;
• and
• an insufflation liquid supply channel interconnecting at least the actuating part and the head section,
• wherein the annular guide lumen is connected to the insufflation liquid supply channel such that an inflation liquid is dischargeable into the body lumen during insertion of the head section and the introducer sheath into the body lumen, the inflation liquid providing a visual indication of a leak in a formed anastomosis.