An infusion pump comprises a tube attachment section configured such that an infusion tube is detachably attachable to the tube attachment section, an access cover configured to close the tube attachment section in an openable manner, and a tube clamp mechanism located within the tube attachment section and configured to clamp and block a portion of the infusion tube. The tube clamp mechanism comprises a base member, a clip clamp member rotatably mounted on the base member, a tube clamp release lever rotatably mounted on the base member, and a tube clamp member rotatably mounted on the base member.
