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: HNN FDA class 1

Knife, Ophthalmic

Ophthalmic

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An Ophthalmic Knife is a surgical cutting instrument designed for precise incisions in ocular surgery, used to create controlled cuts in the cornea, sclera, or other eye structures during procedures such as cataract removal or refractive surgery. This device is FDA Class 1 (lowest risk), requiring only general controls without premarket notification. It carries product code HNN and is regulated under 21 CFR 886.4350, within the Ophthalmic medical specialty.

510(k) Clearances

50+ matches
K Number
Device Name
CLEARCUT S SAFETY KNIFE
OPHTHALMIC KNIFE
RETRACTIVE INCISION MICROMETER (RIM) GUAGE
MVR/STILETTO BLADE 20GA. - P/N 1900
PRISMA DISPOSABLE MVR/STILETTO BLADE
OPHTHALMIC TIP & BLADE SCALPELS
OPHTHALMIC DISPOSABLE BLADES
OPHTHALMIC PHACO-BLADE
KNIFE, OPHTHALMIC
RK-M & RK-DK DIAMOND KNIVES WITH MEASURING GAUGE
CATARACT DIAMOND KNIFE
THE ULTIMATE
SAPPHIRE KNIFE BLADE
RUBY & SAPPHIRE BLADE HOLDER
ROPHAE DIAMOND KNIFE
STORZ E9050 & E9055 DIAMOND KNIVES
CILCO DIAMOND KNIVES & DIAMOND KNIFE LINEAR GAUGE
SAPPHIRE BLADE SURGICAL KNIFE
STORZ E9040 & E9046 DIAMOND KNIVES
DIAMOND BLADE MICROMETER KNIFE
DISPOSABLE SURGICAL KNIFE
BEAVER MICRO-GEM GAUGE BLOCK
OPHTHALMIC KNIFE W/REMOVALE DEPTH GUIDE
VERSABLADE
BEAVER R-K KNIFE
SMARTKNIFE SYSTEM
STORZ DIAMOND KNIFE
VERSABLADE
MICRON-SCOPE
BEAVER MULTIPURPOSE SAPPHIRE KNIFE
37-200 TO 37-246 VARIOUS OPHTHALMOLOGY SCALPELS/KN
CATARACT TRAY
KATENA MICROMETER KNIFE W/XTAL BLADE OF CRYSTAL SA
MICRA DIAMOND KNIFE MICRA ADJUSTABLE KNIFE
CILCO DIAMOND KNIFE
MICROSURGICAL KNIFE
CORNEAL SCLERAL LANCE
SURGICAL KNIFE
RUBY KNIVES FOR OPHTH. SURGERY
LEADING EDGE OPHTHALMIC KNIFE
MICROSURGICAL KNIFE
DIAMOND KNIFE
OPHTHALMIC KNIFE
V LANCE
MICROSURGERY KNIFE
PILLING K KNIFE
ADJUSTABLE MICROSURGICAL KNIFE
KOI DIAMOND KNIFE
TOME'S #'S 1221,1222,1223,1314,6640,6642
SWAN KNIFE NEEDLE 1.5MM CAT # 1170

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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