510(k) Report

510(k) · Cleared

Cleared

Life Sound Sensor Amplifier-Lisa

K953833510(k) TraditionalCleared Dec 5, 1995112-day reviewClass II21 CFR 870.1875

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

Flowscan, Inc. · DQD Stethoscope, Electronic

Cleared on Dec 5, 1995 after a 112-day review. FDA lists a 510(k) statement for it but has not posted the file, so its predicates are not known.

Decided
Dec 5, 1995
Review
112 days
Class
Class II
Product code
DQD
Recalls
None
Predicates
0

FDA lists a 510(k) statement for it but has not posted the file, so its predicates are not known.

FIG. 1 — Lineage of K953833Source: FDA 510(k) database · How lineage is built

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

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 DQD? 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 DQD device

  1. #1 K200776 Eko COREscore 25.2 · 8 generations · no Class I recall
  2. #2 Held for the reportin the report
  3. #3 Held for the reportin the report
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What was it cleared against?

FDA lists a 510(k) statement for it but has not posted the file, so its predicates are not known.

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 DQD devices

DQD Stethoscope, Electronic: FDA decisions, review times, recalls and adverse event reports over 20 years.

FDA decisions per year · DQD

3in 2025

2007: 22008: 12009: 62010: 12011: 42012: 22013: 52015: 22016: 32017: 42018: 42019: 42020: 62021: 42022: 82023: 102024: 42025: 32026 (partial year): 6
2007high 10 (2023) · low 0 (2014)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · DQD

89in 2025

2009: 161 days median2011: 107 days median2013: 70 days median2016: 250 days median2017: 109 days median2018: 131 days median2019: 262 days median2020: 104 days median2021: 137 days median2022: 203 days median2023: 132 days median2024: 153 days median2025: 89 days median2026 (partial year): 236 days median
2007high 262 (2019) · low 70 (2013)2026

Receipt to decision; years with fewer than 3 clearances left blank.

Recalls per year · DQD

No recall names DQD since 2007.

Adverse event reports per year · DQD

1in 2024

2011: 12013: 12024: 1
2007high 1 (2011) · low 0 (2007)2025

MAUDE reports naming product code DQD, 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
20072—00
20081—00
2009616100
20101—00
2011410701
20122—00
201357001
20140—00
20152—00
2016325000
2017410900
2018413100
2019426200
2020610400
2021413700
2022820300
20231013200
2024415301
202538900
202662360—
Cite this page

510(k) Report. “K953833: Life Sound Sensor Amplifier-Lisa.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K953833

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