Devices descending from K864173

2 later devices reach HPD Humidifying Chamber through their predicates, nearest generation first.

Generation	Number	Device	Applicant	Decided	Own descendants	Recalls
+1	K993282	Ipi Humidifier Chamber	I.P.I. Medical Products	2000	0	—
+1	K962223	Water Chambers for ST 3000 Heated Humidifier	Marquest Medical Products, Inc.	1997	1	—