510(k) Report

PMA · Approved

Approved

Reactiv8 Implantable Neurostimulation System

P190021/S006PMAApproved Aug 15, 202333-day reviewClass III

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

Mainstay Medical Limited · QLK Stimulator, Neuromuscular, Lower Back Muscles, Totally Implanted For Pain Relief

Approved on Aug 15, 2023 through premarket approval, which rests on the device’s own clinical evidence after a 33-day review.

Decided
Aug 15, 2023
Review
33 days
Class
Class III
Product code
QLK
Recalls
None

PMA approvals rest on their own clinical evidence and do not claim a predicate, so this family tree starts here.

FIG. 1 — Lineage of P190021/S006Source: FDA PMA database · How lineage is built

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

Sources: FDA PMA database (decision fields and supplements), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.

Planning a device in QLK? 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?

PMA 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 QLK devices

QLK Stimulator, Neuromuscular, Lower Back Muscles, Totally Implanted For Pain Relief: FDA decisions, review times, recalls and adverse event reports over 20 years. 2023, this device’s year, is highlighted.

FDA decisions per year · QLK

1in 2025

2020: 12023: 42024: 22025: 12026 (partial year): 1
2007high 4 (2023) · low 0 (2007)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · QLK

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

Recalls per year · QLK

No recall names QLK since 2007.

Adverse event reports per year · QLK

148in 2025

2021: 42022: 272023: 582024: 1032025: 148
2007high 148 (2025) · low 0 (2007)2025

MAUDE reports naming product code QLK, not matched to any one device; reports are not rates.

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
20201—00
20210—04
20220—027
20234—058
20242—0103
20251—0148
20261—0—
Cite this page

510(k) Report. “P190021/S006: Reactiv8 Implantable Neurostimulation System.” Lineage record from FDA PMA data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/P190021/S006

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Record history
  • FDA decision record loaded May 2, 2026
  • Page last updated Nov 3, 2026