Devices descending from K934509

3 later devices reach Pulmoguard Disposable Baterial/Viral Filter through their predicates, nearest generation first.

Generation	Number	Device	Applicant	Decided	Recalls
+1	K062913	Astraguard Pulmonary Function Filter	Sdi Diagnostics, Inc.	2007	—
+1	K050424	Ergofilter Spi Accessory to Spirolyser SPL-50	Fim Medical	2005	—
+1	K980662	Lichen, Bacterial in Line Breathing Filter	Dhd Healthcare Corp.	1998	—