# K151717: twion

- Pathway: 510(k) (Traditional)
- Applicant: Alber GmbH
- Decided: Feb 23, 2016 after 243 days
- Product code: ITI (Wheelchair, Powered)
- Device class: 2
- Regulation: 21 CFR 890.3860
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 2 generations back to K001491 (2000). 3 ancestors in all.
2 later devices descend from it; 1 cites it directly.
0 of 6 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K140204: JWX-2, Yamaha Motor Co., Ltd. (2014) Summary page 4.

## Most influential descendants
- K192618: e-Motion M25 (2020), 1 descendant of its own
- K221215: e-motion M25 (2022), 0 descendants of its own

## Indications for use
The twion is a Power Assist Wheelchair Conversion Kit and suitable for the manual wheelchair users who are limited in their field of activities because of their physical conditions. The device can expand their field of activities by assisting their wheelchair operating force.

Source page: https://510kreport.com/device/K151717
Methodology: https://510kreport.com/methodology