Cleared Traditional

K921957 - HEWLETT-PACKARD MODEL M1351A FETAL MONITOR (FDA 510(k) Clearance)

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

K921957 · Hewlett-Packard Co. · Obstetrics & Gynecology device
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Sep 1993
Decision
515d
Days
Class 2
Risk

K921957 is an FDA 510(k) clearance for the HEWLETT-PACKARD MODEL M1351A FETAL MONITOR. Classified as System, Monitoring, Perinatal (product code HGM), Class II - Special Controls.

Submitted by Hewlett-Packard Co. (Germany, DE). The FDA issued a Cleared decision on September 24, 1993 after a review of 515 days - an unusually long review period, suggesting complex equivalence evaluation.

This device falls under the Obstetrics & Gynecology FDA review panel, regulated under 21 CFR 884.2740 - 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 Hewlett-Packard Co. devices

Submission Details

510(k) Number K921957 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received April 27, 1992
Decision Date September 24, 1993
Days to Decision 515 days
Submission Type Traditional
Review Panel Obstetrics & Gynecology (OB)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
355d slower than avg
Panel avg: 160d · This submission: 515d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code HGM System, Monitoring, Perinatal
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 884.2740
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.

Regulatory Peers - HGM System, Monitoring, Perinatal

All 213
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