Long-distance ESD changes the dependence on a narrow close-range view. By rebuilding the spatial relationship between the endoscope, the lesion, and the dissection instrument, the operator can work with a clearer and more stable field.
This stability can improve both efficiency and safety. It supports tissue layer recognition, helps maintain margins, reduces hesitation during complex lesions, and improves the conditions for training advanced endoscopists.
When paired with original instruments such as the Zhang Dissection Knife, long-distance ESD becomes an integrated technical system that supports broader clinical adoption.