Devices descending from K770431

2 later devices reach Catheter, Two Stage Venous Return through their predicates, nearest generation first.

Generation	Number	Device	Applicant	Decided	Own descendants	Recalls
+1	K964374	Sarns Venous Return Catheters with Duraflo Treatment	3M Healthcare	1997	0	—
+1	K964195	Chase Two Stage Venous Return Catheter	Chase Medical, Inc.	1997	0	—