K Number
K050473
Device Name
RBK PATELLA FEMORAL KNEE
Date Cleared
2005-11-14

(263 days)

Product Code
Regulation Number
888.3540
AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdparty
Intended Use
The RBK Patella Femoral Knee is intended for use in treating patients with osteoarthritis in the distal femur and patella, patients with a history of patellar fracture and those patients with failed previous surgery where pain, deformity or dysfunction persists. The device is a singleuse implant that is intended for use with bone cement.
Device Description
The RBK Patella Femoral Knee System consists of femoral and patellar components. The femoral component is anatomic in design, to provide coverage of the condyles from posterior to anterior. The anatomic shape of the femoral component necessitates separate left and right geometries. A group of four pegs (posts) on the back of the femoral component assists in cement fixation and rotational stability. The device is manufactured from cobalt chrome alloy that conforms to ASTM F-75-01. The patella components are offered in one configuration; circular, domed, all UHMWPE. The polymer components are manufactured from compression molded ultra-high molecular weight polyethylene (UHMWPE) that conforms to ASTM F-648-00. The domed, all poly patella buttons are available in 5 diameters (24mm - 40mm).
More Information

Not Found

Not Found

No
The description focuses solely on the physical components, materials, and intended use of a knee implant, with no mention of software, algorithms, or data processing that would indicate AI/ML.

Yes
The device is described as an implant intended for treating patients with osteoarthritis, patellar fracture, and failed previous surgeries, which indicates a therapeutic purpose.

No

This device is an implantable knee system (femoral and patellar components) used for treating patients with osteoarthritis, patellar fractures, or failed previous surgeries. Its intended use is therapeutic, not diagnostic.

No

The device description clearly states it consists of physical components (femoral and patellar components made of cobalt chrome alloy and UHMWPE) which are implanted in the body.

Based on the provided text, this device is not an IVD (In Vitro Diagnostic).

Here's why:

  • Intended Use: The intended use clearly states that the device is an implant for treating patients with osteoarthritis and other knee conditions. This is a therapeutic use, not a diagnostic one.
  • Device Description: The description details the physical components of a knee implant (femoral and patellar components made of metal and plastic). This is consistent with a surgical implant, not a device used to test samples from the body.
  • Lack of IVD Characteristics: There is no mention of analyzing biological samples (blood, urine, tissue, etc.), detecting markers, or providing diagnostic information.

IVD devices are used to examine specimens derived from the human body to provide information for the diagnosis, prevention, monitoring, treatment, or alleviation of disease. This device is a physical implant used to replace or augment damaged joint structures.

N/A

Intended Use / Indications for Use

The RBK Patella Femoral Knee is intended for use in treating patients with osteoarthritis in the distal femur and patella, patients with a history of patellar fracture and those patients with failed previous surgery where pain, deformity or dysfunction persists. The device is a singleuse implant that is intended for use with bone cement.

Product codes (comma separated list FDA assigned to the subject device)

KRR

Device Description

The RBK Patella Femoral Knee System consists of femoral and patellar components.

The femoral component is anatomic in design, to provide coverage of the condyles from posterior to anterior. The anatomic shape of the femoral component necessitates separate left and right geometries. A group of four pegs (posts) on the back of the femoral component assists in cement fixation and rotational stability. The device is manufactured from cobalt chrome alloy that conforms to ASTM F-75-01.

The patella components are offered in one configuration; circular, domed, all UHMWPE. The polymer components are manufactured from compression molded ultra-high molecular weight polyethylene (UHMWPE) that conforms to ASTM F-648-00. The domed, all poly patella buttons are available in 5 diameters (24mm - 40mm).

Mentions image processing

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Mentions AI, DNN, or ML

Not Found

Input Imaging Modality

Not Found

Anatomical Site

distal femur and patella

Indicated Patient Age Range

Not Found

Intended User / Care Setting

Not Found

Description of the training set, sample size, data source, and annotation protocol

Not Found

Description of the test set, sample size, data source, and annotation protocol

Not Found

Summary of Performance Studies (study type, sample size, AUC, MRMC, standalone performance, key results)

Not Found

Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)

Not Found

Predicate Device(s): If the device was cleared using the 510(k) pathway, identify the Predicate Device(s) K/DEN number used to claim substantial equivalence and list them here in a comma separated list exactly as they appear in the text. List the primary predicate first in the list.

Not Found

Reference Device(s): Identify the Reference Device(s) K/DEN number and list them here in a comma separated list exactly as they appear in the text.

Not Found

Predetermined Change Control Plan (PCCP) - All Relevant Information for the subject device only (e.g. presence / absence, what scope was granted / cleared under the PCCP, any restrictions, etc).

Not Found

§ 888.3540 Knee joint patellofemoral polymer/metal semi-constrained cemented prosthesis.

(a)
Identification. A knee joint patellofemoral polymer/metal semi-constrained cemented prosthesis is a two-part device intended to be implanted to replace part of a knee joint in the treatment of primary patellofemoral arthritis or chondromalacia. The device limits translation and rotation in one or more planes via the geometry of its articulating surfaces. It has no linkage across-the-joint. This generic type of device includes a component made of alloys, such as cobalt-chromium-molybdenum or austenitic steel, for resurfacing the intercondylar groove (femoral sulcus) on the anterior aspect of the distal femur, and a patellar component made of ultra-high molecular weight polyethylene. This generic type of device is limited to those devices intended for use with bone cement (§ 888.3027). The patellar component is designed to be implanted only with its femoral component.(b)
Classification. Class II. The special controls for this device are:(1) FDA's:
(i) “Use of International Standard ISO 10993 ‘Biological Evaluation of Medical Devices—Part I: Evaluation and Testing,’ ”
(ii) “510(k) Sterility Review Guidance of 2/12/90 (K90-1),”
(iii) “Guidance Document for Testing Orthopedic Implants with Modified Metallic Surfaces Apposing Bone or Bone Cement,”
(iv) “Guidance Document for the Preparation of Premarket Notification (510(k)) Applications for Orthopedic Devices,” and
(v) “Guidance Document for Testing Non-articulating, ‘Mechanically Locked’ Modular Implant Components,” and
(2) International Organization for Standardization's (ISO):
(i) ISO 5832-3:1996 “Implants for Surgery—Metallic Materials—Part 3: Wrought Titanium 6-Aluminum 4-Vandium Alloy,”
(ii) ISO 5832-4:1996 “Implants for Surgery—Metallic Materials—Part 4: Cobalt-Chromium-Molybdenum Casting Alloy,”
(iii) ISO 5832-12:1996 “Implants for Surgery—Metallic Materials—Part 12: Wrought Cobalt-Chromium-Molybdenum Alloy,”
(iv) ISO 5833:1992 “Implants for Surgery—Acrylic Resin Cements,”
(v) ISO 5834-2:1998 “Implants for Surgery—Ultra-high Molecular Weight Polyethylene—Part 2: Moulded Forms,”
(vi) ISO 6018:1987 “Orthopaedic Implants—General Requirements for Marking, Packaging, and Labeling,”
(vii) ISO 7207-2:1998 “Implants for Surgery—Components for Partial and Total Knee Joint Prostheses—Part 2: Articulating Surfaces Made of Metal, Ceramic and Plastic Materials,” and
(viii) ISO 9001:1994 “Quality Systems—Model for Quality Assurance in Design/Development, Production, Installation, and Servicing,” and
(3) American Society for Testing and Materials':
(i) F 75-92 “Specification for Cast Cobalt-28 Chromium-6 Molybdenum Alloy for Surgical Implant Material,”
(ii) F 648-98 “Specification for Ultra-High-Molecular-Weight Polyethylene Powder and Fabricated Form for Surgical Implants,”
(iii) F 799-96 “Specification for Cobalt-28 Chromium-6 Molybdenum Alloy Forgings for Surgical Implants,”
(iv) F 1044-95 “Test Method for Shear Testing of Porous Metal Coatings,”
(v) F 1108-97 “Titanium-6 Aluminum-4 Vanadium Alloy Castings for Surgical Implants,”
(vi) F 1147-95 “Test Method for Tension Testing of Porous Metal Coatings,”
(vii) F 1537-94 “Specification for Wrought Cobalt-28 Chromium-6 Molybdenum Alloy for Surgical Implants,” and
(viii) F 1672-95 “Specification for Resurfacing Patellar Prosthesis.”

0

K050473

SUMMARY OF SAFETY AND EFFECTIVENESS

Sponsor: Global Orthopaedic Technology USA. Inc. 5349 Red Leaf Court Oviedo, Florida 32765

Device: RBK Patella Femoral Knee System

Classification Name: Knee Joint Patellofemoral Polymer/Metal Semi-constrained Cemented Prosthesis - Class II (21 CFR 888.3540)

Intended Use: The RBK Patella Femoral Knee is intended for use in treating patients with osteoarthritis in the distal femur and patella, patients with a history of patellar fracture and those patients with failed previous surgery where pain, deformity or dysfunction persists. The device is a singleuse implant that is intended for use with bone cement.

Device Description: The RBK Patella Femoral Knee System consists of femoral and patellar components.

The femoral component is anatomic in design, to provide coverage of the condyles from posterior to anterior. The anatomic shape of the femoral component necessitates separate left and right geometries. A group of four pegs (posts) on the back of the femoral component assists in cement fixation and rotational stability. The device is manufactured from cobalt chrome alloy that conforms to ASTM F-75-01.

The patella components are offered in one configuration; circular, domed, all UHMWPE. The polymer components are manufactured from compression molded ultra-high molecular weight polyethylene (UHMWPE) that conforms to ASTM F-648-00. The domed, all poly patella buttons are available in 5 diameters (24mm - 40mm).

Potential Risks: The potential risks associated with this device are the same as with any joint replacement device. These include, but are not limited to:

Reaction to bone cement Deformity of the joint Cardiovascular disorders Fracture of bone cement Implant loosening/migration Nerve damage

Blood vessel damage Soft tissue imbalance Delayed wound healing Metal sensitivity Fracture of the components

Bone fracture Infection Hematoma Dislocation Excessive wear

1

Image /page/1/Picture/1 description: The image shows the logo for the U.S. Department of Health and Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH AND HUMAN SERVICES . USA" around the perimeter. Inside the circle is an abstract symbol that resembles a stylized caduceus or a representation of human figures.

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

NOV 1 4 2005

Carl Knobloch, M.Sc. Chief Operating Officer Global Orthopaedic Technology, USA, Inc. 5349 Red Leaf Court Oviedo, Florida 32765

Re: K050473

Trade/Device Name: RBK Patella Femoral Knee System Regulation Number: 21 CFR 888.3540 Regulation Name: Knee joint patellofemoral polymer/metal semi-constrained cemented prosthesis Regulatory Class: II Product Code: KRR Dated: November 4, 2005 Received: November 7, 2005

Dear Mr. Knobloch:

We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices. good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.

If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.

Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.

2

Page 2- Carl Knobloch, M.Sc.

This letter will allow you to begin marketing your device as described in your Section 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.

If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Office of Compliance at (240) 276-0120. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html.

Sincerely yours.

Barbara Buchund
for

Mark N. Melkerson Acting Director Division of General, Restorative and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health

Enclosure

3

INDICATIONS FOR USE

510(k) Number (if known): K050473

Device Name: RBK Patella Femoral Knee System

Indications for Use:

The RBK Patella Femoral Knee is intended for use in treating patients with osteoarthritis in The NDR Patella i emoral Nith a history of patellar dislocation or patellar fracture the distal formal und putfailed previous surgery where pain, deformity or dysfunction and those patients with failou provious carger) in the is intended for use with bone cement.

X Prescription Use (Part 21 CFR 801 Subpart D) AND/OR

Over the Counter Use (21 CFR 807 Subpart C)

(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)

Concurrence of CDRH, Office of Device Evaluation (ODE)

Barbara Buehrig

Division of General, Restorative. and Neurological Devices

510(k) Number K050473