# K972569: E-Type Speed Increaser Contra Angle, External Irrigation, Internal Irrigation

- Pathway: 510(k) (Traditional)
- Applicant: Nsk Nakanishi, Inc.
- Decided: Oct 8, 1997 after 90 days
- Product code: EGS (Handpiece, Contra- And Right-Angle Attachment, Dental)
- Device class: 1
- Regulation: 21 CFR 872.4200
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
7 later devices descend from it; 3 cite it directly.
0 of 8 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. FDA’s file for it is a 510(k) statement, which names no predicate.

## Most influential descendants
- K112305: Vigor a Low Speed Air Motor, Vigor C Low Speed Contra-Angle Handpieces, Vigor S Low Speed Straight Handpieces (2012), 4 descendants of its own
- K141886: MDK Handpieces (2015), 3 descendants of its own
- K262144: DIAMED Handpiece;DIAMED Airmotor;DIAMED Airmotor Handpiece (2026), 0 descendants of its own
- K251388: Dental air-motor handpiece (TM-203B2, TM-203M4, TM-205B2, TM-205M4, TM-IS, TM-ES, TM-SG20, TM-X25, TM-BB, TM-IC, TM-RA41) (2026), 0 descendants of its own
- K202786: Dental Low-speed Handpieces and Accessories (2021), 0 descendants of its own

## Indications for use
The device is intended for use where high speed such as 200,000 rpm is required in general dentistry with or without use of coolant; such as cutting a tooth for cavity and/or crown preparation and finishing, cutting and/or finishing of dentures, denture bases, crowns, inlays and metal plates. The device is driven by an electric micromotor or an air motor handpiece that has the I1S0-3964 Coupling.

Source page: https://510kreport.com/device/K972569
Methodology: https://510kreport.com/methodology