Cleared Traditional

K840571 - EKG 503A

K840571 is an FDA 510(k) clearance for EKG 503A, manufactured by Bosch Hearing Instruments, Inc.. The device is a Class 2 Cardiovascular device with product code DPS cleared through the Traditional 510(k) pathway after a 691-day FDA review.

K840571 · Bosch Hearing Instruments, Inc. · Cardiovascular device
Download Printable Device Report (PDF)
Optimized for regulatory review, auditing and printing
Dec 1985
Decision
691d
Days
Class 2
Risk

K840571 is an FDA 510(k) clearance for the EKG 503A. Classified as Electrocardiograph (product code DPS), Class II - Special Controls.

Submitted by Bosch Hearing Instruments, Inc. (Walker, US). The FDA issued a Cleared decision on December 30, 1985 after a review of 691 days - an unusually long review period, suggesting complex equivalence evaluation.

This device falls under the Cardiovascular FDA review panel, regulated under 21 CFR 870.2340 - 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: 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 Cardiovascular submissions.

View all Bosch Hearing Instruments, Inc. devices

FDA 510(k) Submission Details - K840571

510(k) Number K840571 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received February 08, 1984
Decision Date December 30, 1985
Days to Decision 691 days
Submission Type Traditional
Review Panel Cardiovascular (CV)
Summary -
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
566d slower than avg
Panel avg: 125d · This submission: 691d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

DPS Device Classification - Class 2, Special Controls

Product Code DPS Electrocardiograph
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 870.2340
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 - DPS Electrocardiograph

All 436
Devices cleared under the same product code (DPS) and FDA review panel - the closest regulatory comparables to K840571.
CARDIOFAX ECG-6353
K860212 · Nihon Kohden America, Inc. · Apr 1986
CARDIMAX FX-1164
K853979 · Brentwood Instruments, Inc. · Feb 1986
ESCORT ECG MONITOR SIEMENS SIRECUST 466
K854234 · Medical Data Electronics · Jan 1986
VSM-5
K852322 · Physio-Control Corp. · Sep 1985
CARDIOSTAT 3 RECORDER
K851044 · Siemens Elema AB · Jun 1985
CARDIOSTAT 1 ECG RECORDER
K844392 · Siemens Elema AB · Apr 1985