Two-section combination nasogastric tube

A two-section combination nasogastric tube, comprising:

• an internal tube comprising an inserting end and an opposite mounting end, the inserting end configured to be placed into a human body through a nasal cavity of the human body, the mounting end configured to be arranged outside the nasal cavity of the human body;
• an external tube comprising a feeding end and an opposite connecting end, the feeding end being connected with a feeding port connector;
• a joint comprising a first joint part and an opposite second joint part, the first joint part being removably connected with the connecting end of the external tube, the second joint part comprising a rotatable thread ring;
• and
• a combining member removably connected between the internal tube and the joint, the combining member comprising a base part, a combining part, and a screwing part, the combining part and the screw part being disposed on opposite lateral sides of the base part, respectively, wherein an end part of the combining part is formed in a cone shape, the mounting end of the internal tube is mounted around the end part of the combining part, the combining part comprises a first body section and a second body section;
• the first body section is connected between the base part and the second body section;
• the second body section is formed in a cone shape;
• the first body section comprises a ring-shaped protrusion block, and an outer diameter of the protrusion block is larger than a maximum outer diameter of the second body section, the second body section comprises a plurality of retaining grooves concavely formed on an outer surface thereof, and the screwing part is screwedly combined with the thread ring of the second joint part.