Cleared Traditional

K893861 - TMI LW-100 PULSED DOPPLER SYSTEM

K893861 is an FDA 510(k) clearance for TMI LW-100 PULSED DOPPLER SYSTEM, manufactured by Titronics Medical Instruments, Inc.. The device is a Class 2 Radiology device with product code IYN cleared through the Traditional 510(k) pathway after a 256-day FDA review.

K893861 · Titronics Medical Instruments, Inc. · Radiology device
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Feb 1990
Decision
256d
Days
Class 2
Risk

K893861 is an FDA 510(k) clearance for the TMI LW-100 PULSED DOPPLER SYSTEM. Classified as System, Imaging, Pulsed Doppler, Ultrasonic within the IYN classification (a category covering pulsed Doppler and ultrasound imaging systems), Class II - Special Controls.

Submitted by Titronics Medical Instruments, Inc. (Iowa City, US). The FDA issued a Cleared decision on February 5, 1990 after a review of 256 days - an extended review cycle.

This device falls under the Radiology FDA review panel, regulated under 21 CFR 892.1550 - 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 Titronics Medical Instruments, Inc. devices

FDA 510(k) Submission Details - K893861

510(k) Number K893861 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received May 25, 1989
Decision Date February 05, 1990
Days to Decision 256 days
Submission Type Traditional
Review Panel Radiology (RA)
Summary -
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
149d slower than avg
Panel avg: 107d · This submission: 256d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

IYN Device Classification - Class 2, Special Controls

Product Code IYN System, Imaging, Pulsed Doppler, Ultrasonic
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 892.1550
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 Peers - IYN System, Imaging, Pulsed Doppler, Ultrasonic

All 1116
Devices cleared under the same product code (IYN) and FDA review panel - the closest regulatory comparables to K893861.
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