510(k) Report

510(k) · Cleared

Cleared

Portable Electric Motor-Handpiece Unit, Handy-Mate

K990646510(k) TraditionalCleared Mar 19, 199918-day reviewClass I21 CFR 872.4200

Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly, last Nov 3, 2026

Nsk Nakanishi, Inc. · EKX Handpiece, Direct Drive, Ac-Powered

Cleared on Mar 19, 1999 after an 18-day review. FDA’s file for it is a 510(k) statement, which names no predicate.

Decided
Mar 19, 1999
Review
18 days
Class
Class I
Product code
EKX
Recalls
None
Predicates
0

FDA’s file for it is a 510(k) statement, which names no predicate.

FIG. 1 — Lineage of K990646Source: FDA 510(k) database · How lineage is built

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Notable FDA decisions, review times and new Class I recalls. See an issue.

Sources: FDA 510(k) database (decision fields), the FDA 510(k) statement (indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.

Planning a device in EKX? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.

Top candidate predicates for a new EKX device

  1. #1 K261987 Reusable SmartPegscore 13.2 · 5 generations · no Class I recall
  2. #2 Held for the reportin the report
  3. #3 Held for the reportin the report
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What was it cleared against?

FDA’s file for it is a 510(k) statement, which names no predicate.

What descends from it?

No later submission names this one as a predicate yet.

Has anything in its family been recalled? (0 Class I)

No FDA recall names this device.

No ancestor or descendant has a Class I recall.

How does its category compare?

All EKX devices

EKX Handpiece, Direct Drive, Ac-Powered: FDA decisions, review times, recalls and adverse event reports over 20 years.

FDA decisions per year · EKX

5in 2025

2007: 12008: 32009: 42010: 32011: 42012: 22013: 22014: 32015: 32016: 32017: 22018: 32019: 32020: 12021: 52022: 32023: 42024: 42025: 52026 (partial year): 1
2007high 5 (2021) · low 1 (2007)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · EKX

244in 2025

2008: 101 days median2009: 186 days median2010: 114 days median2011: 75 days median2014: 251 days median2015: 178 days median2016: 274 days median2018: 293 days median2019: 349 days median2021: 214 days median2022: 359 days median2023: 152 days median2024: 276 days median2025: 244 days median
2007high 359 (2022) · low 75 (2011)2026

Receipt to decision; years with fewer than 3 clearances left blank.

Recalls per year · EKX

No recall names EKX since 2007.

Adverse event reports per year · EKX

9in 2025

2007: 92008: 102009: 112010: 202011: 62012: 272013: 452014: 1022015: 682016: 662017: 102018: 492019: 562020: 672021: 792022: 372023: 142024: 192025: 9
2007high 102 (2014) · low 6 (2011)2025

MAUDE reports naming product code EKX, not matched to any one device; reports are not rates.

View these four charts as a table
YearDecisionsMedian 510(k) review, daysRecalls (Class I)MAUDE reports
20071—09
20083101010
20094186011
20103114020
201147506
20122—027
20132—045
201432510102
20153178068
20163274066
20172—010
20183293049
20193349056
20201—067
20215214079
20223359037
20234152014
20244276019
2025524409
20261—0—

What is it indicated for?

The device is a dc electric micromotor driven by the battery power pack control device with emphasis in mobility to visit schools, nursing homes, house calls, and for emergency need.

- It is intended for use in general dental applications for light work such as cutting a tooth for crown preparation, cavity preparation, finishing the crown, inlay or the filling, polishing, and endodontic treatment, with use of straight, right-angle or contra-angle ISO E-type attachment.

Special Note:

The electric motor and its cord are not autoclavable: therefore, an adequate covering by plastic sleeving as commonly used in dental for infection control method is necessary.

Indications for use read by OCR from a scanned FDA 510(k) statement, so letters may be misread. Check the PDF before quoting it.

Cite this page

510(k) Report. “K990646: Portable Electric Motor-Handpiece Unit, Handy-Mate.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K990646

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Record history
  • FDA decision record loaded May 2, 2026
  • Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
  • Page last updated Nov 3, 2026