Cleared Traditional

K971570 - EPXPRESS SYSTEM (TIMBERWOLF REVISION) /000391

K971570 is an FDA 510(k) clearance for EPXPRESS SYSTEM (TIMBERWOLF REVISION) /..., manufactured by Quinton Electrophysiology Corp.. The device is a Class 2 Cardiovascular device with product code DRR cleared through the Traditional 510(k) pathway after a 244-day FDA review.

K971570 · Quinton Electrophysiology Corp. · Cardiovascular device
Download Printable Device Report (PDF)
Optimized for regulatory review, auditing and printing
Dec 1997
Decision
244d
Days
Class 2
Risk

K971570 is an FDA 510(k) clearance for the EPXPRESS SYSTEM (TIMBERWOLF REVISION) /000391. Classified as Amplifier And Signal Conditioner, Biopotential (product code DRR), Class II - Special Controls.

Submitted by Quinton Electrophysiology Corp. (Bothell, US). The FDA issued a Cleared decision on December 29, 1997 after a review of 244 days - an extended review cycle.

This device falls under the Cardiovascular FDA review panel, regulated under 21 CFR 870.2050 - the FDA cardiovascular device 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 Cardiovascular review framework, consistent with the majority of Class II 510(k) submissions.

View all Quinton Electrophysiology Corp. devices

FDA 510(k) Submission Details - K971570

510(k) Number K971570 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received April 29, 1997
Decision Date December 29, 1997
Days to Decision 244 days
Submission Type Traditional
Review Panel Cardiovascular (CV)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Combination Product No
PCCP Authorized No
Regulatory Context
Review time vs. panel average
119d slower than avg
Panel avg: 125d · This submission: 244d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

DRR Device Classification - Class 2, Special Controls

Product Code DRR Amplifier And Signal Conditioner, Biopotential
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 870.2050
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 Cardiovascular devices follow this clearance model.

Regulatory Peers - DRR Amplifier And Signal Conditioner, Biopotential

All 12
Devices cleared under the same product code (DRR) and FDA review panel - the closest regulatory comparables to K971570.
HORIZON 9000/HIS OPTION AMPLIFIER
K914381 · Mennen Medical, Inc. · Jan 1992
CARDIAC ELECTROPHYSICAL LEAD SELECTOR, MODIFIED
K911935 · Gould, Inc. · Jul 1991
BARD BIOPOTENTIAL AMPLIFIER
K874441 · C.R. Bard, Inc. · Jan 1988
EPC FILTER
K813123 · Codman & Shurtleff, Inc. · Nov 1981
HP MODEL 8880A FILTER
K802686 · Hewlett-Packard Co. · Nov 1980
MODEL 15055A MAINFRAME
K791964 · Hewlett-Packard Co. · Oct 1979