Devices descending from K991441
44 later devices reach Cadence Doppler Ultrasound System through their predicates, nearest generation first.
| Generation | Number | Device | Applicant | Decided | Own descendants | Recalls |
|---|---|---|---|---|---|---|
| +1 | K040480 | Sonotrax Ultrasonic Pocket Doppler | Edan Instruments, Inc. | 2004 | 21 | — |
| +1 | K033156 | OB1 Obstetrical Doppler | D. E. Hokanson, Inc. | 2003 | 0 | — |
| +1 | K030466 | Handydop | Elcat, GmbH | 2003 | 1 | — |
| +1 | K024197 | Lifedop Doppler | Summit Doppler Systems, Inc. | 2003 | 31 | 1 |
| +1 | K023143 | Echo Sounder, ES-102EX | Koven Technology, Inc. | 2002 | 1 | — |
| +2 | K110630 | F10 | Mediana Co., Ltd. | 2011 | 0 | — |
| +2 | K101816 | STN Probe | Summit Doppler Systems, Inc. | 2010 | 0 | — |
| +2 | K090510 | Doppler Fetal Heartbeat Rate Detector | Shenzhen Bestman Instrument Co., Ltd. | 2010 | 1 | — |
| +2 | K093393 | Lifedop Model 300ABI | Summit Doppler Systems, Inc. | 2009 | 0 | — |
| +2 | K090499 | Lifedop Model, L350R | Summit Doppler Systems, Inc. | 2009 | 0 | — |
| +2 | K082480 | Contec Pocket Fetal Doppler | Contec Medical System Co., Ltd. | 2009 | 12 | — |
| +2 | K082055 | Model PC-860 Fetal Doppler | Shenzhen Creative Industry Co., Ltd. | 2009 | 0 | — |
| +2 | K080087 | Sonotrax Ultrasonic Fetal and Vascular Pocket Doppler, Models Lite, Basic, Pro, II, II… | Edan Instruments, Inc. | 2008 | 13 | — |
| +2 | K060410 | Echoheart Transvaginal Doppler Probe | Summit Doppler Systems, Inc. | 2006 | 0 | — |
| +2 | K060064 | Stethoflux | Odvi | 2006 | 0 | — |
| +2 | K052190 | Fetal Monitor, Models BT-300 and BT-200 | Bistos Co., Ltd. | 2005 | 3 | — |
| +2 | K031504 | Echo Sounder, Single-Handed, Model ES-101EX | Koven Technology, Inc. | 2003 | 0 | — |
| +3 | K242846 | Doppler FHR Detector (BF-500D+, BF-560) | Shenzhen Bestman Instrument Co., Ltd. | 2025 | 0 | — |
| +3 | K110124 | Fetal Doppler JPD-100S | Shenzhen Jumper Medical Equipment Co., Ltd. | 2011 | 1 | — |
| +3 | K102138 | Ultrasonic Tabletop Doppler; Ultrasonic Tabletop Doppler | Edan Instruments, Inc. | 2010 | 5 | — |
| +3 | K101960 | Sonotrax Series Ultrasonic Pocket Doppler | Edan Instruments, Inc. | 2010 | 4 | — |
| +3 | K100885 | Fetal Monitor Model: BT-200T | Bistos Co., Ltd. | 2010 | 1 | — |
| +3 | K100626 | Doppler Fetal Heart Rate Detector, Model FM-200 | Shenzhen Biocare Electronics Co., Ltd. | 2010 | 9 | — |
| +3 | K092997 | Ultrasonic Tabletop Doppler, Models SD5 and SD6 | Edan Instruments, Inc. | 2009 | 7 | — |
| +4 | K153475 | SD5 & SD6 Ultrasonic Tabletop Doppler | Edan Instruments, Inc. | 2016 | 4 | — |
| +4 | K142799 | Model BT-220L and BT-220C | Bistos Co., Ltd. | 2015 | 0 | — |
| +4 | K142769 | Fetal Doppler | Icare Newlife Technologies, Inc. | 2015 | 0 | — |
| +4 | K140579 | Ultrasonic Pocket Doppler | Edan Instruments, Inc. | 2015 | 3 | — |
| +4 | K112529 | TD-5000 & TD-6000 Ultrasonic Tabletop Doppler | Advanced Instrumentations, Inc. | 2011 | 0 | — |
| +4 | K112911 | Fetal Doppler | Beijing Choice Electronic Technololgy Co., Ltd. | 2011 | 8 | — |
| +5 | K212084 | Fetal Doppler | Shenzhen Mericonn Technology Co., Ltd. | 2021 | 0 | — |
| +5 | K191110 | HeraBEAT™ US | Heramed, Ltd. | 2019 | 0 | — |
| +5 | K191388 | FloPatch (FP110) | Flosonics Medical (R/A 1929803 Ontario Corp.) | 2019 | 1 | — |
| +5 | K180419 | Ultrasonic Doppler (Model YM-2T8) | Shenzhen Imdk Medical Technology Co., Ltd. | 2018 | 2 | — |
| +5 | K172780 | SD1 Ultrasonic Pocket Doppler | Edan Instruments, Inc. | 2018 | 0 | — |
| +5 | K131457 | Fetal Ultrasonic Monitor and Accessories | Shenzhen Jumper Medical Equipment Co., Ltd. | 2014 | 6 | — |
| +6 | K242487 | Laminar P1 (LDH-HW-001) | Laminar Digital Health, Inc. | 2024 | 0 | — |
| +6 | K182526 | Fetal Doppler (Models: FD-231B, FD-231D, FD-640B, FD-640D, FD-200B, FD-200D, FD-591B… | Vcomin Technology Limited | 2019 | 4 | — |
| +6 | K182710 | Fetal Doppler, Model FD88 | Shenzzhen Luckcome Technology Inc., Ltd. | 2019 | 0 | — |
| +6 | K182190 | Fetal Doppler | Shenzhen AOJ Medical Technology Co., Ltd. | 2018 | 0 | — |
| +7 | K220245 | Pocket Fetal Doppler (Models CONTEC10C and CONTEC10CL) | Contec Medical Systems Co.,Ltd | 2022 | 1 | — |
| +7 | K211940 | Fetal Doppler | Shenzhen Taikang Medical Equipment Co., Ltd. | 2022 | 1 | — |
| +8 | K252669 | Fetal Doppler U8-25, U9-25 | Zhongshan Xiaolan Town Senlan Electronic Factory | 2026 | 0 | — |
| +8 | K232893 | Pocket Fetal Doppler (CONTEC 10D), Pocket Fetal Doppler (CONTEC 10E), Pocket Fetal… | Contec Medical Systems Co.,Ltd | 2024 | 0 | — |