An extrusion device for a multi-lumen tubular product in a multi-coronal arrangement, the body (2) defining a passage cavity (2a) and a mean outflow direction (2b), said opposing faces of said body (2). A body (2) defining an inlet face (3) and an outlet face (4) respectively formed in the inlet, the inlet face (3) and the outlet face (4) being centripetal and centrifugal in the passage cavity (2a) respectively. And the extrusion device is functionally associated with the exit face (4) and is configured to orient the spontaneous expansion flow of said extruded material through the exit face (4) in the mutual direction of the mutual intersections. It further comprises an extension (4a). [Selection diagram] Figure 1マルチ冠状配列のマルチルーメン管状製品のための押出装置であって、通路キャビティ(2a)と平均流出方向(2b)とを画定する本体(2)であって、前記本体(2)の対向する面にそれぞれ形成された入口面(3)と出口面(4)とを画定する本体(2)を備え、入口面(3)と出口面(4)はそれぞれ通路キャビティ(2a)に求心性および遠心性を持ち、押出装置は、出口面(4)と機能的に関連し、相互交差の相互方向における出口面(4)を通る前記押出材料の自然膨張流を相互に方向付けるように構成された拡張部分(4a)をさらに備える。【選択図】図1