The FDA issued Femasys of Suwanee, Georgia 510(k) clearance for the FemVue Saline-Air Device. 
FemVue is used to introduce an alternating mixture of air and saline into the uterine cavity as a contrast agent for fluoroscopic hysterosalpingogram (HSG) procedures. Sono HSG is used to asses any potential blockages within fallopian tubes.
Press release: Femasys Announces FDA 510(k) Clearance of New Device for In-Office Diagnostic Sono HSG Test for Evaluating Fallopian Tube…
Product page: FemVue Saline-Air Device…
FemVue Air-Saline Injector for Sono HSG to Help Evaluate Fallopian Tubes
May 4th, 2011 
Medgadget Editors Ob/Gyn