Devices descending from K133053

2 later devices reach Milestone Spinal System through their predicates, nearest generation first.

Generation	Number	Device	Applicant	Decided	Own descendants	Recalls
+1	K172828	Double Medical Cage System	Double Medical Technology, Inc.	2018	1	—
+2	K253151	Fule Interbody Fusion Cage System	Beijing Fule Science & Technology Development Co., Ltd.	2026	0	—