Endovascular stent graft assembly and delivery device

A stent graft comprising:

• a main tubular body of a biocompatible graft material defining a main lumen having a first end and a second end;
• at least one scalloped fenestration formed in the graft material at the second end;
• at least one fenestration formed in the graft material of the main tubular body;
• an internal side branch defining a lumen and extending from the fenestration towards the second end of the stent graft within the lumen of the main tubular body;
• wherein the internal side branch is configured to extend at least partially around the scalloped fenestration.

A stent graft assembly comprising:

• a main stent graft comprising a tubular body of a biocompatible graft material defining a main lumen having a first end and a second end;
• at least one scalloped fenestration formed in the graft material at the second end;
• at least one fenestration formed in the graft material of the main tubular body;
• an internal side branch defining a lumen and extending from the fenestration towards the second end of the stent graft within the lumen of the main tubular body;
• wherein the internal side branch is configured to extend at least partially around the scalloped fenestration;
• a connection stent graft comprising a tubular body of a biocompatible graft material defining a main lumen, the connection stent graft extending from the fenestration formed in the main tubular body.