Tool · 510(k)

510(k) Predicate Finder

Find potential predicate devices for your 510(k) submission. Enter a K-number to find all clearances with the same product code, a three-letter product code to browse clearances directly, or search by device name.

Product Code: KNG FDA class 2

Monitor, Ultrasonic, Fetal

Obstetrics/Gynecology

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An Ultrasonic Fetal Monitor is a diagnostic device used in obstetrics to continuously detect and record fetal heart rate using Doppler ultrasound technology, providing real-time assessment of fetal wellbeing during pregnancy and labor. It is classified as FDA Class 2, indicating moderate risk requiring 510(k) premarket clearance. The product code is KNG and the applicable regulation is 21 CFR 884.2660 in the Obstetrics and Gynecology specialty. This device is eligible for third-party review.

510(k) Clearances

50+ matches
K Number
Device Name
Doppler FHR Detector (BF-500D+, BF-560)
Ultrasonic Fetal Doppler
Pocket Fetal Doppler (CONTEC 10D), Pocket Fetal Doppler (CONTEC 10E), Pocket Fetal Doppler (CONTEC 10F)
Pocket Fetal Doppler (Models CONTEC10C and CONTEC10CL)
Fetal Doppler
Fetal Doppler
HeraBEAT™ US
Fetal Doppler (Models: FD-231B, FD-231D, FD-640B, FD-640D, FD-200B, FD-200D, FD-591B, and FD-591D)
Fetal Doppler, Model FD88
Fetal Doppler
Ultrasonic Doppler (Model YM-2T8)
SD1 Ultrasonic Pocket Doppler
SD5 & SD6 Ultrasonic Tabletop Doppler
ULTRASONIC POCKET DOPPLER
FETAL ULTRASONIC MONITOR AND ACCESSORIES
TD-5000 & TD-6000 ULTRASONIC TABLETOP DOPPLER
FETAL DOPPLER
PD-100 SERIES ULTRASONIC POCKET DOPPLER
F10
FETAL DOPPLER JPD-100S
DOPPLER FETAL HEART RATE DETECTOR, MODEL FM-200
DOPPLER FETAL HEARTBEAT RATE DETECTOR
ULTRASONIC TABLETOP DOPPLER, MODELS SD5 AND SD6
CONTEC POCKET FETAL DOPPLER
MODEL PC-860 FETAL DOPPLER
SONOTRAX ULTRASONIC FETAL AND VASCULAR POCKET DOPPLER, MODELS LITE, BASIC, PRO, II, II PRO AND VASCULAR
BABYBEAT CORDLESS
SONOTRAX ULTRASONIC POCKET DOPPLER
OB1 OBSTETRICAL DOPPLER
HANDYDOP
ECHO SOUNDER, SINGLE-HANDED, MODEL ES-101EX
LIFEDOP DOPPLER
ECHO SOUNDER, ES-102EX
BABYCOM
CADENCE DOPPLER ULTRASOUND SYSTEM
MULTI DOPPLEX II / FETAL DOPPLEX II
POCKET SIZE FETAL HEART DETECTOR
OBTRASOUND STETHOSCOPE FETAL CALC
UST-974-5 CONVEX TRANSDUCER
IMEX DOP-TONE II
HUNTLEIGH FETAL DOPPLER, FD-1 & DOPCORD, D140
TOITU DOPPLER FETUS DETECTOR, FD-400D
PIE MEDICAL SCANNER 1000
ULTRASOUND LINEAR/SECTOR SCANNER 1100
HUNTLEIGH DOPCORD, D140
COMBISCOPE
OBSTETRICAL DOPPLER
PROGRAMALITH PROGRAMMER
FETAL PULSE DETECTORS, F50/F60
DOPPLEX-PLB & PXB

What is a Predicate Device?

A predicate device is a legally marketed device that a new 510(k) applicant uses to demonstrate substantial equivalence. The FDA's 510(k) pathway requires manufacturers to show that their device has the same intended use and similar technological characteristics as one or more predicate devices already cleared for commercial distribution.

Finding the right predicate is a critical step in 510(k) strategy. Manufacturers typically search for cleared devices with the same FDA product code, which groups devices by their intended use and regulatory classification. This tool helps you identify potential predicates by browsing all clearances within a product code.

Note that predicate devices must be legally marketed — they cannot be devices that were cleared but never commercialized, or devices subject to a mandatory recall. The determination of substantial equivalence considers intended use, technological characteristics, and performance data.

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