Devices descending from K163709

3 later devices reach FIRMap Catheter through their predicates, nearest generation first.

Generation	Number	Device	Applicant	Decided	Own descendants	Recalls
+1	K223666	Ablacath™ Mapping Catheter	Ablacon, Inc.	2023	2	—
+2	K253205	OptiMap Catheter - 50mm (OPTI-CATH2-50)	Cortex, Inc.	2026	1	—
+3	K261012	OptiMap Catheter - 60mm (OPTI-CATH2-60)	Cortex, Inc.	2026	0	—