510(k) · Cleared
Recalled · Class II · 2023Liss Cranial Stimulator Model SBL202-B
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Medical Consultants Intl., Ltd. · QJQ Cranial Electrotherapy Stimulator To Treat Insomnia And/Or Anxiety
Cleared on Oct 4, 1990 after a 90-day review. FDA has not posted a summary or statement for it, so its predicates are not known. 1 later device descends from it. It has been recalled once.
- Decided
- Oct 4, 1990
- Review
- 90 days
- Class
- Class II
- Product code
- QJQ
- Recalls
- 1
- Predicates
- 0
1 later device descends from it, 1 citing it directly.
- This deviceK903654 Liss Cranial Stimulator Model SBL202-BMedical Consultants Intl., Ltd. · 1990
- Descendant · cites it directly · 0 of its ownK024377 Transcranial Electrotherapy Stimulator-a, Model Tesa-1Kalaco Scientific, Inc. · 2003
Most influential descendants
Showing 1 of 1 · See all- K024377Transcranial Electrotherapy Stimulator-a, Model Tesa-1Kalaco Scientific, Inc. · 2003 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| 0 (this device) | K903654 | Liss Cranial Stimulator Model SBL202-B | Medical Consultants Intl., Ltd. | 1990 | — |
| +1 | K024377 | Transcranial Electrotherapy Stimulator-a, Model Tesa-1 | Kalaco Scientific, Inc. | 2003 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2003 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in QJQ? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
Top candidate predicates for a new QJQ device
- #1 K252951 Genesis Sleepscore 11.2 · 3 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against?
FDA has not posted a summary or statement for it, so its predicates are not known.
What descends from it? (1)
1 later device cites it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K024377 | Transcranial Electrotherapy Stimulator-a, Model Tesa-1 | 2003 | 0 |
Has anything in its family been recalled? (0 Class I)
Recalls of this device
| Date | Class | Recall | Root cause | Reason |
|---|---|---|---|---|
| Apr 6, 2023 | Class II | Z-1600-2023 | Nonconforming Material/Component | If the batteries are installed incorrectly, the product may overheat, possibly leading to pain, discomfort, irritation, or even burns during use of the device. |
No ancestor or descendant has a Class I recall.
What does this lineage say?
- Of its descendants, K024377 (Kalaco Scientific, Inc., 2003) has gone furthest, with 0 descendants of its own.
How does its category compare?
All QJQ devicesQJQ Cranial Electrotherapy Stimulator To Treat Insomnia And/Or Anxiety: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · QJQ
1in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · QJQ
Too few QJQ 510(k)s in any year since 2007 to give a median.
Recalls per year · QJQ
No recall names QJQ since 2007.
Adverse event reports per year · QJQ
39in 2023
MAUDE reports naming product code QJQ, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 1 | — | 0 | 0 |
| 2008 | 1 | — | 0 | 0 |
| 2009 | 1 | — | 0 | 0 |
| 2010 | 0 | — | 0 | 0 |
| 2011 | 0 | — | 0 | 0 |
| 2012 | 0 | — | 0 | 0 |
| 2013 | 0 | — | 0 | 0 |
| 2014 | 0 | — | 0 | 0 |
| 2015 | 0 | — | 0 | 0 |
| 2016 | 0 | — | 0 | 0 |
| 2017 | 0 | — | 0 | 0 |
| 2018 | 0 | — | 0 | 0 |
| 2019 | 1 | — | 0 | 0 |
| 2020 | 0 | — | 0 | 0 |
| 2021 | 0 | — | 0 | 0 |
| 2022 | 0 | — | 0 | 0 |
| 2023 | 1 | — | 0 | 39 |
| 2024 | 1 | — | 0 | 0 |
| 2025 | 1 | — | 0 | 0 |
| 2026 | 0 | — | 0 | — |
https://510kreport.com/device/K903654 · printed Nov 6, 2026
Cite this page
510(k) Report. “K903654: Liss Cranial Stimulator Model SBL202-B.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K903654
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Record history
- FDA decision record loaded May 2, 2026
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026