Cleared Traditional

K904448 - TOWNLEY TOTAL KNEE (TTK)

K904448 is an FDA 510(k) clearance for TOWNLEY TOTAL KNEE (TTK), manufactured by Biopro, Inc.. The device is a Class 2 Orthopedic device with product code JWH cleared through the Traditional 510(k) pathway after a 292-day FDA review.

K904448 · Biopro, Inc. · Orthopedic device
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Jul 1991
Decision
292d
Days
Class 2
Risk

K904448 is an FDA 510(k) clearance for the TOWNLEY TOTAL KNEE (TTK). Classified as Prosthesis, Knee, Patellofemorotibial, Semi-constrained, Cemented, Polymer/metal/polymer (product code JWH), Class II - Special Controls.

Submitted by Biopro, Inc. (Port Huron, US). The FDA issued a Cleared decision on July 17, 1991 after a review of 292 days - an extended review cycle.

This device falls under the Orthopedic FDA review panel, regulated under 21 CFR 888.3560 - the FDA orthopedic device regulatory 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 Orthopedic review framework, consistent with the majority of Class II 510(k) submissions.

View all Biopro, Inc. devices

FDA 510(k) Submission Details - K904448

510(k) Number K904448 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received September 28, 1990
Decision Date July 17, 1991
Days to Decision 292 days
Submission Type Traditional
Review Panel Orthopedic (OR)
Summary -
Third-party Review No - reviewed directly by FDA
Combination Product No
PCCP Authorized No
Regulatory Context
Review time vs. panel average
170d slower than avg
Panel avg: 122d · This submission: 292d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

JWH Device Classification - Class 2, Special Controls

Product Code JWH Prosthesis, Knee, Patellofemorotibial, Semi-constrained, Cemented, Polymer/metal/polymer
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 888.3560
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 Orthopedic devices follow this clearance model.

Regulatory Peers - JWH Prosthesis, Knee, Patellofemorotibial, Semi-constrained, Cemented, Polymer/metal/polymer

All 887
Devices cleared under the same product code (JWH) and FDA review panel - the closest regulatory comparables to K904448.
ANATOMIC MODULAR KNEE POLYETHYLENE TIBIAL TRAY
K910940 · Depuy, Inc. · Sep 1991
AGC REVISION KNEE PROTHESIS
K912245 · Biomet, Inc. · Aug 1991
OSTEONICS 7000 SERIES STAND TOTAL KNEE FEMOR COMP
K912147 · Osteonics Corp. · Aug 1991
MG II POROUS COBAL T-CHROME FEMORAL COMPONENT
K911572 · Zimmer, Inc. · Jul 1991
PCA MTK II TOTAL KNEE SYSTEM
K910235 · Howmedica Corp. · Jun 1991
OSTEONICS 7000 SERIES TOTAL KNEE TIBIAL COMPONENTS
K910990 · Osteonics Corp. · Jun 1991