Injector head with rotation mechanism

An injector head with rotation mechanism, comprising:

• a supporting part;
• a rotating part fixed on said supporting part to have a rotation axis extending substantially horizontally;
• an injector head body fixed on said rotating part to be rotatable about said rotation axis;
• and
• a syringe detachably attached to said injector head body;
• wherein
• said syringe includes a through hole at a front end side;
• in a state where said syringe is attached to said injector head body, when viewed from the direction perpendicular to and parallel to the rotation axis, central axis line of said syringe is inclined with respect to said rotation axis;
• and
• the rotating part rotates said injector head body about said rotation axis as the center of rotation to select one of a first state in which said syringe takes a priming orientation with said through hole side of said syringe positioned higher than said injector head body with respect to the rotation axis and a second state in which said syringe takes a contrast agent injectable orientation with said through hole side of said syringe positioned lower than said injector head body with respect to the rotation axis,
• said through hole is provided at a position eccentric to said central axis line of said syringe;
• and
• said syringe is mounted on said injector head body such that when said syringe is in said priming orientation, said through hole is positioned at the uppermost position, and when said syringe is in said contrast agent injectable orientation, said through hole is positioned at the lowermost position.