Cleared Traditional

K923335 - ULTRASOUND TRANSUCER, MODEL US915 -- MODIFICATION (FDA 510(k) Clearance)

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

K923335 · Advanced Medical Systems, Inc. · Obstetrics & Gynecology device
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Jul 1994
Decision
774d
Days
Class 2
Risk

K923335 is an FDA 510(k) clearance for the ULTRASOUND TRANSUCER, MODEL US915 -- MODIFICATION. Classified as Transducer, Ultrasonic, Obstetric (product code HGL), Class II - Special Controls.

Submitted by Advanced Medical Systems, Inc. (Hamden, US). The FDA issued a Cleared decision on July 22, 1994 after a review of 774 days - an unusually long review period, suggesting complex equivalence evaluation.

This device falls under the Obstetrics & Gynecology FDA review panel, regulated under 21 CFR 884.2960 - the FDA obstetrics and gynecology device framework. The Traditional 510(k) pathway establishes clearance through substantial equivalence to a legally marketed predicate device, without requiring clinical trial data.

Device pattern: High-complexity regulatory submission. Elevated predicate reliance profile. The extended review timeline suggests the FDA required additional documentation before confirming substantial equivalence - a pattern common in complex or first-of-kind Obstetrics & Gynecology submissions.

View all Advanced Medical Systems, Inc. devices

Submission Details

510(k) Number K923335 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received June 08, 1992
Decision Date July 22, 1994
Days to Decision 774 days
Submission Type Traditional
Review Panel Obstetrics & Gynecology (OB)
Summary Statement
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
614d slower than avg
Panel avg: 160d · This submission: 774d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code HGL Transducer, Ultrasonic, Obstetric
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 884.2960
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 Obstetrics & Gynecology devices follow this clearance model.