# K202110: MStim Drop Model: LGT-233

- Pathway: 510(k) (Traditional)
- Applicant: Guangzhou Longest Science & Technology Co., Ltd.
- Decided: Nov 5, 2021 after 463 days
- Product code: GZI (Stimulator, Neuromuscular, External Functional)
- Device class: 2
- Regulation: 21 CFR 882.5810
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 9 generations back to K800380 (1980). 27 ancestors in all.
No later device cites it as a predicate yet.
0 of 28 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K162407: L300 Go System, Bioness, Inc. (2017) Summary page 5.
- K141812: Mygait Stimulation System, Otto Bock Healthcare Products GmbH (2015) Summary page 5.

## Indications for use
The MStim Drop LGT-233 is intended to provide ankle dorsiflexion in individuals who have a dropped foot as a consequence of upper motor neuron injury. The device electrically stimulates muscles in the affected leg to provide ankle dorsiflexion of the foot and/or knee flexion or extension; thus, it also may improve the individual’s gait. The MStim Drop LGT-233 may also: *Prevent/retard disuse atrophy *Maintain or increase joint range of motion eIncrease local blood flow

Source page: https://510kreport.com/device/K202110
Methodology: https://510kreport.com/methodology