Falloposcopy (occasionally also falloscopy[1]) is the inspection of the fallopian tubes through a micro- endoscope.

[2] A coaxial falloposcope is an microendoscope of 0.5 mm diameter that is flexible and contains optical and illuminating fibers; it has a magnifying capacity.

In contrast, the LEC system consists of an external unfurling ballon catheter with an internal endoscope that is used transcervically without the need for a hysteroscope.

[2] The patient needs general anesthesia or conscious sedation for the duration of the procedure and is in a lithotomy position.

For the coaxial system initially a hysteroscope is introduced into the uterus to identify the proximal tubal ostium.

[2][5] In 2001, Rimbach et al. reported in a large multicenter study involving 367 patients on the limitations of the procedure.