The present invention provides a suturing device for internally forming a knot in a suture within a body cavity, during surgeries, wherein said device comprising a flexible pre-shaped helical lumen having two opposite ends, said lumen comprising n loops n is a real number higher than or equal to 1 said helical lumen is adapted to accommodate at least a portion of said suture, such that said knot is obtained by threading by at least one end of said suture through at least one of said loops.
