Devices descending from K921452

2 later devices reach Acoustic Rhinometer through their predicates, nearest generation first.

Generation	Number	Device	Applicant	Decided	Own descendants	Recalls
+1	K170071	SGS ECCOVISIONTM Pharyngometer, SGS ECCOVISIONTM Rhinometer, SGS ECCOVISIONTM…	Sleep Group Solutions	2017	1	—
+2	K221892	Visionair	Pacificmd Biotech, LLC	2022	0	—