Devices descending from K921441
34 later devices reach Interferential Stimulator Model Inf 4150/a through their predicates, nearest generation first.
| Generation | Number | Device | Applicant | Decided | Own descendants | Recalls |
|---|---|---|---|---|---|---|
| +1 | K952683 | Apex Medical Corp. Portable Interferential Stimulation Device | Wholesale Medical Imports, Inc. | 1997 | 33 | — |
| +2 | K092780 | Inf 4160 Plus, Model D-FJ31F | Fuji Dynamics Limited | 2010 | 0 | — |
| +2 | K071869 | Tens/IF 14 | Emsi | 2008 | 0 | — |
| +2 | K070890 | Everlife Interferential Current Therapy, Model IF-100507 | Everlife Medical Equipment Co., Ltd. | 2007 | 0 | — |
| +2 | K060246 | Infrex | Johari Digital Healthcare, Ltd. | 2006 | 14 | — |
| +2 | K043407 | Inf 4160, Model D-FJ27F | Fuji Dynamics Limited | 2005 | 0 | — |
| +2 | K032719 | GM3 Series IF Tens, Model GM3X2IF (Where X IS a Parameter of Different Housing) | Gemore Technology Co, Ltd. | 2003 | 7 | — |
| +2 | K024100 | IF Series True Sine Interferential Stimulator/Model: WL-2206, Well IF, Life IF and the… | Theratech, Inc. | 2003 | 6 | — |
| +3 | K122944 | Gemore True Sine Interferential Stimulator | Gemore Technology Co, Ltd. | 2012 | 0 | — |
| +3 | K120054 | Ultima Neo | Pain Management Technologies | 2012 | 2 | — |
| +3 | K073438 | Prostim 1000/2000 | Bio Protech, Inc. | 2008 | 0 | — |
| +3 | K072123 | Homewave Neuromodulations Pain Therapy Device | Biowave Corporation | 2008 | 11 | — |
| +3 | K050847 | IF True Sine Interferential Stimulator, Model WL-2206A | Theratech, Inc. | 2005 | 5 | — |
| +3 | K042559 | Gem-Twin Tens/ Models GM3XY/Z | Gemore Technology Co, Ltd. | 2004 | 2 | — |
| +4 | K232441 | Unipro (K-UNIPRO-US) | Tenscare, Ltd. | 2024 | 1 | — |
| +4 | K161154 | Smartpatch PNS MicroLead and Accessories, Smartpatch PNS Stimulator, Pads, and… | Spr Therapeutics, LLC | 2016 | 9 | — |
| +4 | K122948 | Gem-Stim Combo Stimulator | Gemore Technology Co, Ltd. | 2012 | 0 | — |
| +4 | K110509 | Everyway Interferntial Stimulator, Model IF-908 | Everyway Medical Instruments Co.,Ltd | 2011 | 0 | — |
| +4 | K090866 | Neurocalm Model 1 and 2 | Neuromed Devices, Inc. | 2009 | 0 | — |
| +4 | K082057 | DX6605E-Tens, DX6605E-G, DX6609-G | Shenzhen Dongdixin Technology Co., Ltd. | 2009 | 0 | — |
| +4 | K060975 | IF True Sine Interferential Stimulator / Model WL-2206A1 & WI-2206A2 | Theratech, Inc. | 2006 | 3 | — |
| +5 | K252236 | CP Relief Wand Rx - TENS/NMES | N & C Holdings, LLC | 2025 | 0 | — |
| +5 | K243782 | StimTrial Neuromodulation System | Bioventus, LLC | 2025 | 0 | — |
| +5 | K212859 | First Relief | Dyansys, Inc. | 2021 | 0 | — |
| +5 | K170902 | Sprint System, Single Procedure Kit, Sprint System with Pad II, Single Procedure Kit… | Spr Therapeutics, LLC | 2017 | 7 | — |
| +5 | K090023 | IF Series True Sine Interferential Stimulator, Model: WL-2206B and WL-2106E | Well-Life Healthcare Limited | 2009 | 2 | — |
| +6 | K181422 | SPRINT Peripheral Nerve Stimulation System, Extensa, SPRINT Peripheral Nerve Stimulation… | Spr Therapeutics, Inc. | 2018 | 6 | — |
| +6 | K092763 | IF True Sine Interferential Stimulator, WL-2206D | Well-Life Healthcare Limited | 2009 | 1 | — |
| +7 | K202660 | SPRINT PNS System | Spr Therapeutics, Inc. | 2021 | 5 | — |
| +7 | K100399 | 4 Channels Multiple Model Digital Electrical Stimulator, Model Nuvostim IV, WL-2504A | Well-Life Healthcare Limited | 2010 | 0 | — |
| +8 | K213188 | Primary Relief | Dyansys, Inc. | 2022 | 1 | — |
| +8 | K211801 | SPRINT PNS System | Spr Therapeutics, Inc. | 2021 | 1 | — |
| +9 | K223306 | SPRINT Peripheral Nerve Stimulation (PNS) System | Spr Therapeutics, Inc. | 2023 | 0 | — |
| +9 | K221425 | Primary Relief | Dyansys, Inc. | 2022 | 0 | — |