Intrathoracic L-shaped positioning device adopting 3D printing in endoscopy and manufacturing method thereof

The invention discloses an intrathoracic L-shaped positioning device adopting 3D printing in an endoscopy and a manufacturing method thereof. The L-shaped positioning device is an L-shaped hollow tube adopting the 3D printing and comprises a vertical section, an elbow and a horizontal section, wherein a head end fit with the top face of the thorax of a patient is arranged at the top of the vertical section, the tail end of the horizontal section is closed, and a nidus marking device connected with the hollow tube is arranged on the horizontal section. When the intrathoracic L-shaped positioning device is used, the positioning device is arranged and fixed in the thorax of the patient in a conformal mode and marks the ground-glass node position of the lung through the nidus marking device. The L-shaped positioning device avoids the problem that a node and a hook-wire cannot be touched by adopting a method of touching by hand or a micro-coil is unhooked or falls into the thoracic cavity, the CV exposure to the patient and the working amount of a medical worker are decreased, and meanwhile the influence on the ribs or shoulder blades due to dissection is eliminated.