Retrieval devices of Micro Tech Endoscopy are conducive to the removal of all kinds of resected objects (malignant tumors, cystic and purulent resects) and foreign bodies during endoscopic surgery, to prevent contact between pathological tissues and healthy tissues, and to avoid pathological residues. It is beneficial to the postoperative rehabilitation of patients and reduce the cost of treatment. Micro tech nanjing retrievers have various sizes and shapes in order to meet the demand of removing the resected objects.