A tool for inserting an endotracheal tube, the endotracheal tube comprising a tubular sheath defining therein a longitudinally extending lumen, the tool comprising: • a longitudinal insertion member; and • a guide member configured to facilitate relative longitudinal motion between the insertion member and the endotracheal tube when the insertion member is received within its lumen and comprising a guide wheel having a circumferentially formed engagement arrangement comprising an inner portion and an outer portion, said engagement arrangement configured to engage with the endotracheal tube, when the insertion member is received within its lumen, to move it longitudinally relative to said insertion member, an inner portion of the engagement arrangement is smaller than an outer portion of the engagement arrangement such that said engagement arrangement comprises two sides sloping from the outer portion toward the inner portion; and said tool characterized by: said insertion member and said guide member are connected at respective proximal ends (12a, 14a) thereof by a bridge member; and said insertion member extends between a proximal end and a distal end thereof, said guide member comprising an arm attached to said bridge member and extending between a proximal end, being articulated to the proximal end of said insertion member, and a distal end thereof, wherein the arm of said guide member is shorter than said insertion member.; and wherein the distal end of the arm of said guide member is adjacent a middle portion of said insertion member. • a longitudinal insertion member; and • a guide member configured to facilitate relative longitudinal motion between the insertion member and the endotracheal tube when the insertion member is received within its lumen and comprising a guide wheel having a circumferentially formed engagement arrangement comprising an inner portion and an outer portion, said engagement arrangement configured to engage with the endotracheal tube, when the insertion member is received within its lumen, to move it longitudinally relative to said insertion member, an inner portion of the engagement arrangement is smaller than an outer portion of the engagement arrangement such that said engagement arrangement comprises two sides sloping from the outer portion toward the inner portion; and said tool characterized by: said insertion member and said guide member are connected at respective proximal ends (12a, 14a) thereof by a bridge member; and said insertion member extends between a proximal end and a distal end thereof, said guide member comprising an arm attached to said bridge member and extending between a proximal end, being articulated to the proximal end of said insertion member, and a distal end thereof, wherein the arm of said guide member is shorter than said insertion member.; and wherein the distal end of the arm of said guide member is adjacent a middle portion of said insertion member. an inner portion of the engagement arrangement is smaller than an outer portion of the engagement arrangement such that said engagement arrangement comprises two sides sloping from the outer portion toward the inner portion; and said tool characterized by: said insertion member and said guide member are connected at respective proximal ends (12a, 14a) thereof by a bridge member; and said insertion member extends between a proximal end and a distal end thereof, said guide member comprising an arm attached to said bridge member and extending between a proximal end, being articulated to the proximal end of said insertion member, and a distal end thereof, wherein the arm of said guide member is shorter than said insertion member.; and wherein the distal end of the arm of said guide member is adjacent a middle portion of said insertion member.