Devices descending from K822733

2 later devices reach Sigma Reagent System NO. 885 through their predicates, nearest generation first.

Generation	Number	Device	Applicant	Decided	Own descendants	Recalls
+1	K990398	Plateletworks	Array Medical, Inc.	1999	1	—
+2	K023761	Plateletworks, Models PW-a, PW-C	Helena Laboratories	2003	0	—