Apparatus for guiding subcutaneous placement of puncture indwelling drainage tube

An apparatus for guiding subcutaneous placement of a puncture indwelling drainage tube, comprising:

• a cannula in which a first puncture needle core, a second puncture needle core, a third puncture needle core and a fourth puncture needle core are arranged;
• the front portion of the first puncture needle core is a tip, the first puncture needle core has a first engagement portion, and the tail portion of the first puncture needle core is provided with a first handle;
• the front end of the second puncture needle core has a second engagement portion that matches the first engagement portion of the first puncture needle core, and the tail portion of the second puncture needle core is provided with a second handle;
• the front portion of the third puncture needle core is a tip, the third puncture needle core has a third engagement portion, and the tail portion of the third puncture needle core is provided with a third handle;
• the front end of the fourth puncture needle core has a fourth engagement portion that matches the third engagement portion of the third puncture needle core, and the tail portion of the fourth puncture needle core is provided with a fourth handle;
• the front ends of the four puncture needle cores all protrude from the front end of the cannula;
• the four handles all protrude from the rear end of the cannula.