Cleared Traditional

K250331 - Astrasono A3Pro Bladder Scanner (A3Pro) (FDA 510(k) Clearance)

Class II Radiology device cleared through predicate-based substantial equivalence - typically does not require clinical trials.

K250331 · Astrasono Technology Co., Ltd. · Radiology device
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Sep 2025
Decision
237d
Days
Class 2
Risk

K250331 is an FDA 510(k) clearance for the Astrasono A3Pro Bladder Scanner (A3Pro). Classified as System, Imaging, Pulsed Echo, Ultrasonic (product code IYO), Class II - Special Controls.

Submitted by Astrasono Technology Co., Ltd. (Shenzhen, CN). The FDA issued a Cleared decision on September 30, 2025 after a review of 237 days - an extended review cycle.

This device falls under the Radiology FDA review panel, regulated under 21 CFR 892.1560 - the FDA radiology and imaging software oversight framework. The Traditional 510(k) pathway establishes clearance through substantial equivalence to a legally marketed predicate device, without requiring clinical trial data.

Device pattern: Standard predicate-based submission. Standard predicate reliance. This clearance follows a standard predicate-based equivalence path within the Radiology review framework, consistent with the majority of Class II 510(k) submissions.

View all Astrasono Technology Co., Ltd. devices

Submission Details

510(k) Number K250331 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received February 05, 2025
Decision Date September 30, 2025
Days to Decision 237 days
Submission Type Traditional
Review Panel Radiology (RA)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Combination Product No
PCCP Authorized No
Regulatory Context
Review time vs. panel average
130d slower than avg
Panel avg: 107d · This submission: 237d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code IYO System, Imaging, Pulsed Echo, Ultrasonic
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 892.1560
What this classification means

Class II devices require demonstration of substantial equivalence to a legally marketed predicate device. This pathway does not require clinical trials - it relies on engineering equivalence and performance data. Most Radiology devices follow this clearance model.

Regulatory Consultant

Manton Business and Technology Services
Charles Shen

The regulatory consultant manages the 510(k) submission process on behalf of the applicant - coordinating technical documentation, predicate strategy and FDA communications. Identifying the consultant behind a submission is a key signal for competitive regulatory intelligence.

Regulatory Peers - IYO System, Imaging, Pulsed Echo, Ultrasonic

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