# K931428: Cadwell 6200 a

- Pathway: 510(k) (Traditional)
- Applicant: Cadwell Laboratories, Inc.
- Decided: Jun 22, 1993 after 88 days
- Product code: GWF (Stimulator, Electrical, Evoked Response)
- Device class: 2
- Regulation: 21 CFR 882.1870
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
39 later devices descend from it; 2 cite it directly.
0 of 40 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. The FDA summary names no predicate by number.

## Most influential descendants
- K962455: Four-Channel Preamplifier (1997), 37 descendants of its own
- K112718: Nuvasive NVM5 System (2012), 35 descendants of its own
- K123307: Nuvasive NVM5 System (2013), 33 descendants of its own
- K132694: Nuvasive NVM5 System (2014), 24 descendants of its own
- K141968: Nuvasive NVM5 System (2014), 23 descendants of its own

## Indications for use
The Cadwell 6200A is designed to perform the measurements needed for Electromyography (EMG), Nerve Conduction Velocity (NCV, F wave, H wave), Evoked Potentials (Brain Stem, Visual, Somatosensory) and Repetitive Nerve Stimulation.

Source page: https://510kreport.com/device/K931428
Methodology: https://510kreport.com/methodology