510(k) Report

De Novo · Granted

Granted

Quell-FM

DEN210046De NovoGranted May 18, 2022225-day reviewClass II21 CFR 882.5888

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

Neurometrix, Inc. · QSQ Transcutaneous Electrical Nerve Stimulator To Treat Fibromyalgia Symptoms

Granted on May 18, 2022 as a new device type through De Novo after a 225-day review.

Decided
May 18, 2022
Review
225 days
Class
Class II
Product code
QSQ
Recalls
None

De Novo grants create a new device type without a predicate, so this family tree starts here.

FIG. 1 — Lineage of DEN210046Source: FDA De Novo database · How lineage is built

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

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

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

  • Candidate predicates for a device like this, rankedin the report
  • Recall history across each candidate’s familyin the report
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Does it have a predicate?

De Novo decisions do not claim a predicate device.

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 QSQ devices

QSQ Transcutaneous Electrical Nerve Stimulator To Treat Fibromyalgia Symptoms: FDA decisions, review times, recalls and adverse event reports over 20 years. 2022, this device’s year, is highlighted.

FDA decisions per year · QSQ

1in 2022

2022: 1
2007high 1 (2022) · low 0 (2007)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · QSQ

Too few QSQ 510(k)s in any year since 2007 to give a median.

Recalls per year · QSQ

No recall names QSQ since 2007.

Adverse event reports per year · QSQ

No MAUDE report names QSQ since 2007.

View these four charts as a table
YearDecisionsMedian 510(k) review, daysRecalls (Class I)MAUDE reports
20070—00
20080—00
20090—00
20100—00
20110—00
20120—00
20130—00
20140—00
20150—00
20160—00
20170—00
20180—00
20190—00
20200—00
20210—00
20221—00
20230—00
20240—00
20250—00
20260—0—

What is it indicated for?

The Quell-FM is a transcutaneous electrical nerve stimulation (TENS) device indicated as an aid for reducing the symptoms of fibromyalgia in adults with high pain sensitivity. The Quell-FM may be used during sleep. The Quell-FM is labeled for use only with compatible NeuroMetrix electrodes.

Indications for use as stated in the FDA summary.

Cite this page

510(k) Report. “DEN210046: Quell-FM.” Lineage record from FDA De Novo data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/DEN210046

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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