(116 days)
No
The 510(k) summary describes a mechanical knee replacement system and its components, materials, and performance testing. There is no mention of software, algorithms, or any technology that would suggest the use of AI or ML.
Yes
The device is a total knee replacement system used to treat painful and disabling joint diseases of the knee, correct functional deformities, and address post-traumatic loss of knee function, which aligns with the definition of a therapeutic device designed to restore or improve physiological function.
No
Explanation: The device is described as a total knee replacement system, which is an implant used for treatment, not for diagnosing medical conditions. The "Indications for Use" describe conditions that necessitate the replacement, not conditions the device itself diagnoses.
No
The device description clearly outlines multiple physical components made of various materials (metal alloys, polyethylene) that are implanted in the body. This is a hardware-based medical device.
No, this device is not an IVD (In Vitro Diagnostic).
Here's why:
- IVD Definition: In Vitro Diagnostic devices are used to examine specimens taken from the human body (like blood, urine, tissue) to provide information for diagnosis, monitoring, or screening.
- Device Description: The A3 Total Knee System is a total knee replacement system. It is a physical implant designed to replace damaged knee joints.
- Intended Use: The intended use clearly states it is for treating painful and disabling joint disease of the knee, correcting deformities, and addressing post-traumatic issues and fractures. These are all related to the physical structure and function of the knee joint, not the analysis of biological specimens.
The information provided describes a surgical implant, not a diagnostic test performed on samples outside the body.
N/A
Intended Use / Indications for Use
The A3 Total Knee System indications for use is:
- Painful, disabling joint disease of the knee resulting from: non-inflammatory degenerative joint disease (including osteoarthritis, traumatic arthritis, or avascular necrosis) or rheumatoid arthritis.
- Correction of functional deformities.
- Post-traumatic loss of knee joint configuration and function.
- Moderate valgus, varus, or flexion deformity.
- . Knee fractures untreatable by other methods.
The A3 Total Knee System is indicated for cemented use only.
Product codes (comma separated list FDA assigned to the subject device)
JWH
Device Description
The subject device and both predicate devices are total knee replacement systems consisting of five components:
-
- Femoral Condyle
-
- Tibial Tray
-
- Tibial Insert
-
- Patellar Component
-
- Locking Mechanism
The subject device and both predicates have femoral condyle and tibial tray components manufactured from cast cobalt chromium molybdenum (Co-Cr-Mo) alloy. The femoral components of all devices are available in both left and right configurations.
The tibial inserts of the subject device and primary predicate device are manufactured from conventional ultra-high molecular weight polyethylene (UHMWPE), while the reference predicate is manufactured using a combination of UHMWPE and cobalt-chromium (Co-Cr). The range of available sizes of the tibial trays and inserts varies for the subject and predicate devices.
The subject device and primary predicate have a patellar component manufactured from UHMWPE, while the material of construct of the patella of the reference predicate is unknown. The subject and both predicate devices have a locking mechanism, although the configurations and method of operation are slightly different. The locking clip for the subject device is manufactured from titanium, the reference predicate locking wire is manufactured from Co-Cr and the material of the primary predicate is unknown. The subject and primary predicate devices have the same maximum degree of flexion (145°), while the maximum flexion of the reference predicate is slightly less (110°).
All devices are of a posterior stabilized design and none are cruciate ligament retaining devices. The subject and both predicates are shipped sterile.
Mentions image processing
Not Found
Mentions AI, DNN, or ML
Not Found
Input Imaging Modality
Not Found
Anatomical Site
Knee
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)
The mechanical properties of the AK Medical A3 Total Knee System device were tested in accordance with applicable international standards. The performance testing conducted on the A3 total knee system are listed below.
-
- The Tibial Tray Fatigue Testing.
-
- The Wear Mechanical Performance Testing.
-
- The Constraint Testing.
-
- The Contact Pressure Testing.
-
- The Shear Fatigue Testing of the Tibial Post.
-
- Surface Roughness Analysis.
-
- Physiological Loads Testing on Interlocking Mechanisms.
-
- The Shear Fatigue Testing on the Patellar Component.
-
- Patella Constraint Testing
-
- Patella Contact Testing
-
- Static Shear Testing of the Patellar Component
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.
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.
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
§ 888.3560 Knee joint patellofemorotibial polymer/metal/polymer semi-constrained cemented prosthesis.
(a)
Identification. A knee joint patellofemorotibial polymer/metal/polymer semi-constrained cemented prosthesis is a device intended to be implanted to replace a knee joint. 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 prostheses that have a femoral component made of alloys, such as cobalt-chromium-molybdenum, and a tibial component or components and a retropatellar resurfacing component made of ultra-high molecular weight polyethylene. This generic type of device is limited to those prostheses intended for use with bone cement (§ 888.3027).(b)
Classification. Class II.
0
Beijing AK Medical Co., Ltd. % Barry Sands President ROMIS, Inc. 110 Haverhill Road, Suite 526 Amesbury, Massachusetts 01913 June 22, 2018
Re: K180493
Trade/Device Name: A3 Total Knee System Regulation Number: 21 CFR 888.3560 Regulation Name: Knee Joint Patellofemorotibial Polymer Semi-Constrained Cemented Prosthesis Regulatory Class: Class II Product Code: JWH Dated: May 15, 2018 Received: May 21, 2018
Dear Barry Sands:
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. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to 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); medical device reporting of medical device-related adverse events) (21 CFR 803); good
1
manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803). please go to http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm.
For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/MedicalDevices/DeviceRegulationandGuidance/) and CDRH Learn (http://www.fda.gov/Training/CDRHLearn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (http://www.fda.gov/DICE) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
Mark N. Melkerson -S
Mark N. Melkerson Director Division of Orthopedic Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
2
DEPARTMENT OF HEALTH AND HUMAN SERV CES Food and Drug Administration
Indications for Use
Form Approved OMB No 0910-0120 Expiration Date 06/30/2020 See PRA Statement below
510(k) Number (if known)
Device Name
A3 Total Knee System
ndications for Use (Describe)
The A3 Total Knee System indications for use is:
- Painful, disabling joint disease of the knee resulting from: non-inflammatory degenerative joint disease (including osteoarthritis, traumatic arthritis, or avascular necrosis) or rheumatoid arthritis.
- Correction of functional deformities.
- Post-traumatic loss of knee joint configuration and function.
- Moderate valgus, varus, or flexion deformity.
- . Knee fractures untreatable by other methods.
The A3 Total Knee System is indicated for cemented use only.
| Type of Use (Select one or both as applicable) | ||
|---|---|---|
| ☑ Prescription Use (Part 21 CFR 801 Subpart D) ☐ Over-The-Counter Use (21 CFR 801 Subpart C) | ☑ Prescription Use (Part 21 CFR 801 Subpart D) | ☐ Over-The-Counter Use (21 CFR 801 Subpart C) |
| ☑ Prescription Use (Part 21 CFR 801 Subpart D) | ☐ Over-The-Counter Use (21 CFR 801 Subpart C) |
CONTINUE ON A SEPARATE PAGE IF NEEDED.
This section applies only to requirements of the Paperwork Reduction Act of 1995
*DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMA L ADDRESS BELOW *
The burden time for this collection of information is estimated to average 79 hours per response including the
time to review instructions search existing data sources gather and maintain the data needed and complete and
review the collection of information Send comments regarding this burden estimate or any other aspect of this
information collection including suggestions for reducing this burden to
Department of Health and Human Services
Food and Drug Administration
Office of Chief nformation Officer
Paperwork Reduction Act (PRA) Staff
PRAStaff@fda hhs gov
"An agency may not conduct or sponsor and a person is not required to respond to a collection of
information unless it displays a currently valid OMB number "
FORM FDA 3881 (7/17)
PSC Publishing Services (301) 443-6740 EF
3
510(k) SUMMARY
Beijing AK Medical Co., Ltd.'s A3 Total Knee System
| Submitter | Beijing AK Medical Co., Ltd.
Aiguo Liu, FDA Project Team Leader
No. 10 Baifuquan Road
102200, Beijing, China |
|--------------------------|-----------------------------------------------------------------------------------------------------------------------|
| Contact Person: | Barry Sands
RQMIS, Inc.
110 Haverhill Road, Suite 526
Amesbury, MA 01913
Phone: 978-358-7307 |
| Date Prepared: | February 16, 2018 |
| Name of Device | A3 Total Knee System |
| Name/Address of Sponsor: | Beijing AK Medical Co., Ltd.
Aiguo Liu, FDA Project Team Leader
No. 10 Baifuquan Road
102200, Beijing, China |
Common or Usual Name
Posteriorly Stabilized Total Knee Replacement
Classification Name
Per 21 CFR as follows: §888.3560 Knee joint patellofemorotibial polymer semi-constrained cemented prosthesis
Product Code JWH Regulatory Class II
Predicate Devices
Primary - K113550, Biomet Vanguard Complete Knee System Additional – K031729, Stryker Triatholon Posteriorly Stabilized (PS) Total Knee System
4
Intended Use / Indications for Use
Intended Use:
The A3 Total Knee System device is a total knee replacement product line. The intended use is the same as the primary predicate device.
Indications for Use:
The A3 Total Knee System indications for use is:
- . Painful, disabling joint disease of the knee resulting from: non-inflammatory degenerative joint disease (including osteoarthritis, traumatic arthritis, or avascular necrosis) or rheumatoid arthritis.
- Correction of functional deformities.
- Post-traumatic loss of knee joint configuration and function.
- Moderate valgus, varus, or flexion deformity.
- . Knee fractures untreatable by other methods. The A3 Total Knee System is indicated for cemented use only.
Technological Characteristics
The technological features implemented in the A3 Total Knee System device are similar to the predicates and no new safety or effectiveness issues are raised. The subject device has the same material technology and is similar in design, function, and application to the predicate devices.
The subject device and both predicate devices are total knee replacement systems consisting of five components:
-
- Femoral Condyle
-
- Tibial Tray
-
ന് Tibial Insert
- 4. Patellar Component
- ട. Locking Mechanism
The subject device and both predicates have femoral condyle and tibial tray components manufactured from cast cobalt chromium molybdenum (Co-Cr-Mo) alloy. The femoral components of all devices are available in both left and right configurations.
The tibial inserts of the subject device and primary predicate device are manufactured from conventional ultra-high molecular weight polyethylene (UHMWPE), while the reference predicate is manufactured using a combination of UHMWPE and cobalt-chromium (Co-Cr). The range of available sizes of the tibial trays and inserts varies for the subject and predicate devices.
The subject device and primary predicate have a patellar component manufactured from UHMWPE, while the material of construct of the patella of the reference predicate is unknown. The subject and both predicate devices have a locking mechanism, although the configurations and method of operation are slightly different. The locking clip for the subject device is manufactured from titanium, the reference predicate locking wire is manufactured from Co-Cr
5
and the material of the primary predicate is unknown. The subject and primary predicate devices have the same maximum degree of flexion (145°), while the maximum flexion of the reference predicate is slightly less (110°).
All devices are of a posterior stabilized design and none are cruciate ligament retaining devices. The subject and both predicates are shipped sterile.
The features and characteristics of the subject AK Medical A3 Total Knee System device are essentially the same as for the predicate devices with only minor differences that do not raise new questions of safety or efficacy, and all devices have the same intended use.
Performance Data
The mechanical properties of the AK Medical A3 Total Knee System device were tested in accordance with applicable international standards. The performance testing conducted on the A3 total knee system are listed below.
-
- The Tibial Tray Fatigue Testing.
-
- The Wear Mechanical Performance Testing.
-
- The Constraint Testing.
-
- The Contact Pressure Testing.
-
- The Shear Fatigue Testing of the Tibial Post.
-
- Surface Roughness Analysis.
-
- Physiological Loads Testing on Interlocking Mechanisms.
-
- The Shear Fatigue Testing on the Patellar Component.
-
- Patella Constraint Testing
-
- Patella Contact Testing
-
- Static Shear Testing of the Patellar Component
Conclusion
The A3 Total Knee System is substantially equivalent to other legally marketed total knee replacement predicate devices. The A3 Total Knee System has the same general intended use and substantially the same indications for use, technological characteristics, and principles of operation as the previously cleared primary predicate Biomet Vanguard Complete Knee System (K113550) and a second, reference predicate the Stryker Triathlon Posteriorly Stabilized (PS) Total Knee System (K031729). The performance testing – mechanical/bench testing – as well as the same indications for use and materials demonstrate that the A3 Total Knee System is as safe and effective as its predicate devices.