(193 days)
The indications for use of the total hip replacement prosthesis include: degenerative joint disease including osteoarthritis and avascular necrosis; rheumatoid arthritis; correction of functional deformity; revision procedures where other treatments or devices have failed; and treatment of nonunion, femoral neck and trochanteric fractures of the proximal femur with head involvement, which is unmanageable using other techniques.
This document is a 510(k) premarket notification for a medical device: Zirconia ceramic femoral heads for use with specific hip stems. The content is primarily a summary of safety and effectiveness used to demonstrate substantial equivalence to predicate devices, rather than a detailed study report with acceptance criteria and performance data.
Therefore, the requested information regarding acceptance criteria, device performance, study details, and ground truth cannot be fully extracted from the provided text. The document focuses on demonstrating that the new Zirconia ceramic heads are comparable in material, design, and clinical indications to existing, cleared devices.
Based on the provided text, the following information can be stated:
- Acceptance Criteria and Reported Device Performance: This information is not explicitly stated in the document. The filing is a 510(k) premarket notification, which relies on demonstrating "substantial equivalence" to predicate devices, rather than establishing de novo acceptance criteria with detailed performance metrics.
- Sample Size Used for the Test Set and Data Provenance: Not applicable. This document is not a report of a clinical trial or a test set evaluation. It's a regulatory submission demonstrating equivalence.
- Number of Experts Used to Establish the Ground Truth for the Test Set and Qualifications of those Experts: Not applicable. This document does not describe a ground truth establishment process for a test set.
- Adjudication Method for the Test Set: Not applicable.
- Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study: Not applicable.
- If a standalone (i.e., algorithm only without human-in-the-loop performance) was done: Not applicable, as this is a physical medical device (femoral head), not an algorithm or AI system.
- The type of ground truth used: Not applicable in the context of an AI/algorithm. For a physical device, "ground truth" would relate to material properties, wear performance, or clinical outcomes, which are not detailed as a "ground truth" for a specific test set in this document. The "truth" in this context is established through a body of evidence including material testing and comparable clinical performance of predicate devices.
- Sample size for the training set: Not applicable, as this is a physical medical device, not an AI/ML algorithm.
- How the ground truth for the training set was established: Not applicable.
Summary of the document's relevance to the request:
The document outlines an intention to market Zirconia ceramic heads for hip replacement prostheses. The core of the submission is to establish substantial equivalence to predicate devices. This means that instead of presenting a new study with explicit acceptance criteria for performance, the submission argues that the device is "equivalent in material, design and clinical indications" to already cleared devices. This equivalency is the "proof" that the device meets regulatory requirements.
The predicate devices mentioned are Zirconia heads manufactured by Demarquest for Zimmer (K944601), DuPuy (K926395), and Smith and Nephew Richards, Inc. (K935921). The "acceptance criteria" are effectively that the new device performs sufficiently similar to these cleared predicate devices according to established material and design standards for hip prostheses.
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K96 5002
Summary of Safety and Effectiveness
JUN 27 1997
Encore Orthopedics™, Inc. 8900 Shoal Creek Bldg. 300 Austin, TX 78757 512-795-8696 Ashley M. Bock
Trade Name: Zirconia ceramic heads for use with Encore® Vitality™, SL and SLR PLUS, and Foundation™ Forged, Textured and Porous Stems.
Common Name: Ceramic femoral head
Classification Name: Hip joint metal/ceramic/polymer semi-constrained cemented prosthesis per 21 CFR 888.3353. (LZO).
Description: Zirconia ceramic heads for use with Foundation® Forged (K952191), Textured (K935263) and Porous Stems (K952297), the Encore® Vitality™ Stem (K962560) and the SL and SLR PLUS (K932481) Hip Stems which have been cleared for commercial distribution.
Indications for Use: The indications for use of the total hip replacement prosthesis include: degenerative joint disease including osteoarthritis and avascular necrosis; rheumatoid arthritis; correction of functional deformity; revision procedures where other treatments or devices have failed; and treatment of nonunion, femoral neck and trochanteric fractures of the proximal femur with head involvement, which is unmanageable using other techniques.
Comparable Features to Predicate Device(s): The Zirconia ceramic heads to be used with Foundation® Forged, Textured and Porous Stems, the Encore ® Vitality™ Stem and SL and SLR PLUS Hip Stems are equivalent in material, design and clinical indications to the zirconia heads also manufactured by Demarquest for Zimmer (K944601) , DuPuy (K926395), and Smith and Nephew Richards, Inc. (K935921).
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Image /page/1/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo is circular and features the department's name around the perimeter. In the center of the logo is a stylized image of three human profiles facing to the right, representing the department's focus on people and health.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
Ms. Ashley M. Bock Requlatory Specialist Encore Orthopedics; Inc: 9800 Metric Boulevard Austin, Texas 78758
JUN 27 1997
Re : K965002 Zirconia Ceramic Femoral Heads for use with the Foundation Forged, Textured, and Porous Stems, the Encore Vitality Stem, and SL and SLR PLUS Hip Stems Regulatory Class: II Product Code: LZO Dated: April 15, 1997 Received: April 17, 1997
Dear Ms. Bock:
We have reviewed your Section 510 (k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to 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). You may, therefore, market the device, subject to the general controls provisions of the Act and the following limitation that the package insert must reflect that the Zirconia Ceramic Femoral Heads for use with the Foundation Forged, Textured, and Porous Stems, the Encore Vitality Stem, and SL and SLR PLUS Hip Stems are to be used only with cobalt-chrome and Ti6Al4V alloy hip stems with the Cerasiv taper trunnions.
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.
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Page 2 - Ms. Ashley M. Bock
If your device is classified (see above) into either class II (Special Controls) or class III (Premarket Approval), 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 895. A substantially equivalent determination assumes compliance with the current Good Manufacturing Practice requirement, as set forth in the Quality System Requlation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic (QS) inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal Laws or Requlations.
This letter will allow you to begin marketing your device as described in your 510(k) premarket notification immediately. An FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4659. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). Other general information on your responsibilities under the Act may be
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Page 3 - Ms. Ashley M. Bock
obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address "http://www.fda.gov/cdrh/dsmamain.html".
Sincerely yours, J
Marie Afchude, ms, PT
Image /page/3/Picture/4 description: The image shows a handwritten word, which appears to be "for". The writing is in a cursive style, with the letters connected. The image is in black and white, and the writing is clear and legible.
Celia M. Witten, Ph.D., M.D. Director
Division of General and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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| 510(k) Number (if known): | K965002 |
|---|---|
| Device Name: | Encore Zirconia Femoral Heads |
Indications For Use:
Encore® Zirconia Heads Indications For Use
The indications for use of the total hip replacement prosthesis include: noninflammatory degenerative joint disease including osteoarthritis and avascular necrosis; rheumatoid arthritis; correction of functional deformity; revision procedures where other treatments or devices have failed; and treatment of nonunion, femoral neck and trochanteric fractures of the proximal femur with head involvement, which is unmanageable using other techniques.
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE) rer. · "IVe Devic 1971981 (NUTIDET
Prescription Use (per 21 CFR 801. 109)
OR
Over-The-Counter Use
(Optional Format 1-2-96)_
§ 888.3353 Hip joint metal/ceramic/polymer semi-constrained cemented or nonporous uncemented prosthesis.
(a)
Identification. A hip joint metal/ceramic/polymer semi-constrained cemented or nonporous uncemented prosthesis is a device intended to be implanted to replace a hip joint. This device limits translation and rotation in one or more planes via the geometry of its articulating surfaces. It has no linkage across-the-joint. The two-part femoral component consists of a femoral stem made of alloys to be fixed in the intramedullary canal of the femur by impaction with or without use of bone cement. The proximal end of the femoral stem is tapered with a surface that ensures positive locking with the spherical ceramic (aluminium oxide, A12 03 ) head of the femoral component. The acetabular component is made of ultra-high molecular weight polyethylene or ultra-high molecular weight polyethylene reinforced with nonporous metal alloys, and used with or without bone cement.(b)
Classification. Class II.