(221 days)
- Non-inflammatory degenerative ioint disease including osteoarthritis and avascular necrosis, 2) Rheumatoid arthritis, 3) Correction of functional deformity 4) Treatment of nonunion, femoral neck and trochanteric fractures of the proximal femur with head involvement, unmanageable using other techniques, 5) Revision of previously failed total hip arthroplasty. Cemented and Uncemented Applications.
Biomet Manufacturing Corp. is modifying the manufacturing process of UHMWPE used in the fabrication of polyethylene acetabular components. The modified manufacturing process results in a higher cross-linked polyethylene, that Biomet will herein refer to as ArComXL™.
The provided document describes the ArComXL™ Polyethylene Liners and studies conducted to demonstrate their performance compared to a predicate device. The information is extracted from a 510(k) summary, which focuses on demonstrating substantial equivalence to a legally marketed predicate device, rather than defining explicit "acceptance criteria" in the same way one might for a new, novel product with performance goals.
However, we can infer the acceptance criteria from the reported performance improvements over the predicate device. The studies are standalone (algorithm only, no human-in-the-loop performance is relevant here as it's a material science evaluation). The ground truth is based on physical material testing and established ASTM standards, not expert consensus or clinical outcomes.
Here's the breakdown:
1. Table of Acceptance Criteria and Reported Device Performance
Note: "Acceptance Criteria" are inferred as improved performance over the predicate device, as this is a 510(k) submission for a modification to an existing device. The goal is to show the new device is "substantially equivalent" or better.
| Category | Acceptance Criteria (Inferred from Predicate Performance Baseline) | Reported Device Performance (ArComXL™) |
|---|---|---|
| Hip Simulator Wear | Volumetric wear rate ≤ predicate (65.8 mm³/10⁶ cycles) | 47% reduction (34.9 mm³/10⁶ cycles) vs. predicate |
| Abrasive Hip Wear | Volumetric wear rate ≤ predicate (309.0 mm³/10⁶ cycles) | 64% reduction (109.8 mm³/10⁶ cycles) vs. predicate |
| Free Radicals | Number of free radicals ≤ predicate (3.82 x 10¹⁵ spins/g) | 94% reduction (0.22 x 10¹⁵ spins/g) vs. predicate |
| Oxidative Stability | Oxidation index ≤ predicate (>=1.1 at 1mm depth) after aging | No measurable oxidation (index < 0.4) after accelerated aging (ASTM F2003-00). Average ultimate load 31% higher (91.8N vs 70.2N). |
| Mechanical Strength | Ultimate tensile strength ≥ predicate (47 MPa) | 30% increase (61 MPa) in ultimate tensile strength vs. predicate |
2. Sample Size Used for the Test Set and Data Provenance
The document does not explicitly state the numerical sample size (e.g., number of inserts or material samples). Instead, it refers to "ArComXL™ polyethylene acetabular inserts" and "predicate polyethylene liners/material."
- Sample Size: Not explicitly stated as a numerical count beyond referring to "ArComXL™ polyethylene acetabular inserts" or "material" for each test. For the Hip Simulator Wear, it states "All inserts in this study mate with either a 50 or 52mm acetabular shell...", implying multiple samples were tested for each group (ArComXL™ and predicate).
- Data Provenance: The studies are in vitro laboratory tests. There is no mention of data country of origin or whether it's retrospective/prospective, as this is not clinical data.
3. Number of Experts Used to Establish the Ground Truth for the Test Set and Qualifications of Those Experts
Not applicable. The ground truth for these material science tests is established through objective physical measurements using standardized testing methods (e.g., ASTM standards, hip simulator protocols), not subjective expert assessment. The free radical testing was performed by "an independent laboratory."
4. Adjudication Method for the Test Set
Not applicable. Adjudication methods like 2+1 or 3+1 are used for clinical image interpretation or diagnostic performance assessments, not for material property testing. The results are quantitative measurements.
5. If a Multi Reader Multi Case (MRMC) Comparative Effectiveness Study was done, If so, what was the effect size of how much human readers improve with AI vs without AI assistance
Not applicable. This is a material science study evaluating the physical properties of a polyethylene liner for hip implants, not a diagnostic device involving human readers or AI assistance.
6. If a Standalone (i.e., algorithm only without human-in-the-loop performance) was done
Yes, all presented studies are standalone physical performance tests of the device material itself, without human intervention in the device's functional performance or a human-in-the-loop element during testing.
7. The Type of Ground Truth Used
The ground truth used is based on:
- Physical Measurements and Mechanical Testing: Volumetric wear rate (mm³/10⁶ cycles), number of free radicals (spins/g), oxidation index (FTIR), ultimate tensile strength (MPa), and ultimate load (N) are objective, quantitative physical properties measured according to established protocols or ASTM standards.
- Established Standards: ASTM F-648 for UHMWPE, ASTM F2003-00 for accelerated aging, ASTM F2183-02 for small punch testing, and ASTM D638-02a for tensile testing.
8. The Sample Size for the Training Set
Not applicable. There is no mention of a "training set" as this is not a machine learning or AI-driven device. These are material tests of manufactured components.
9. How the Ground Truth for the Training Set was Established
Not applicable, as there is no training set mentioned or relevant for this type of device and study.
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BIOMET
MAR 8 - 2005
510(k) Summary
| NATA |
|---|
Sponsor: Biomet Manufacturing Corp. 56 East Bell Drive P.O. Box 587 Warsaw, IN 46581-0587 Contact Person: Tracy Bickel Johnson, RAC ArComXL™ Polyethylene Liners Proprietary Name: Common Name; UHMWPE Classification Name: - hip jolnt metal/polymer/metal semi-constralned porous coated uncemented prosthesis (888.3358) - hip joint metal/polymer semi-constrained cemented prosthesis (888.3350) Substantlally Equivalent Devices: -ArCom® Polyethylene Liners and Components (K023357) -RingLoc® 36mm Liners (K032396) Device Description: Biomet Manufacturing Corp. is modifying the manufacturing process of UHMWPE used in the fabrication of polyethylene acetabular components. The modified manufacturing process results in a higher cross-linked polyethylene, that Biomet will herein refer to as ArComXL™. Indications for Use: 1) Non-inflammatory degenerative ioint disease including osteoarthritis and avascular necrosis, 2) Rheumatoid arthritis, 3) Correction of functional deformity 4) Treatment of nonunion, femoral neck and trochanteric fractures of the proximal femur with head involvement, unmanageable using other techniques, 5) Revision of previously failed total hip arthroplasty. Cemented and Uncemented Applications. Summary of Technologies: The intended use, indications, contraindications, and design specifications of the subject components remain identical to their predicate component counterparts. The raw material being utilized in the manufacture of both the subject and the predicate devices remains a ultra-high molecular weight polyethylene (UHMWPE) per ASTM F-648. The modifications to the manufacturing process of this polyethylene will be Introduced in order to create a higher crosslinked polyethylene. The safety and effectiveness of this crosslinked polyethylene in acetabular applications, as well as the proposed wear claims, are adequately supported by the substantial equivalence information, materials data, and testing results provided within this Premarket Notlfication.
MAILING ADDRESS P.O. Box 587 Warsaw, IN 46581-0587
1
SHIPPING ADDRESS 56 E. Bell Drive Warsaw, IN 46582
1
OFFICE 574.267.6639
ドヘメ 574.267.8137
E-MAIL hiomet@blomet.com
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042051
510(k) Summary- Page 2 of 3 ArComXL™ Polyethylene Liners
Claims:
Hip Simulator Wear
The Biomet ArComXL™ polyethylene acetabular inserts (Part No.: XL-105933) tested are isostatically compression molded highly crosslinked components (50kGy gamma irradiated under argon) that are sterilized in alr by either gas plasma or ethylene oxide. ArComXL™ was compared to identical predicate polyethylene liners (Part No.: 12-105893) that were machined from isostatically molded polyethylene that was subsequently gamma sterilized (25-40kGy) in argon. A side by side hip simulator wear test of the two materials showed a 47% reduction in the volumetric wear rate (34.9 opposed to 65.8 mm³/10° cycles) for ArComXL™ (EtO sterilized) when compared to the predicate device. All inserts In this study mate with either a 50 or 52mm acetabular shell, have a standard rim, a 32 mm inner dlameter, and a 4.75 mm bearing thickness. Testing was performed under multiaxial hip joint simulation for five (5) million cycles, using a Paul Hip load profile with a maximum load of 2.4kN, 32 mm CoCr articulating heads, and a bovine calf servim lubricant. The results of in vitro hip wear simulator tests have not been shown to quantitatively predict clinical wear performance.
Abrasive Hip Simulator Wear
The Biomet ArComXL™ polyethylene acetabular inserts (Part No.: XL-105933) tested are isostatically compression molded highly crosslinked components (50kGy gamma irradiated under argon) that are sterilized in air by either gas plasma or ethylene oxide. ArComXL™ was compared to Identical predicate polyethylene liners (Part No.: 12-105893) that were machined from isostatically moded polyethylene that was subsequently gamma sterilized (25-40kGy) in argon. After 5 million cycles of hip simulator wear with no additives, bone cement particulate was added to simulate abrasive conditions for two (2) million cycles. Under abrasive conditions, the Biomet ArComXL™ (EtO sterilized) polyethylene acetabular insert (Part No.: XL-105933) showed a 64% reduction In volumetric wear rate (109.8 opposed to 309.0 mm /10 cycles) when compared to the same acetabular inserts fabricated from the predicate polyethylene (Part No .: 12-105893). These Inserts mate with either a 50 or 52mm acetabular shell, have a standard rim, a 32mm inner diameter, and a 4.75 mm bearing thickness. Testing was performed under multiaxial hip joint slawlation for two (2) million cycles, using a Paul Hip load profile with a maximum load of 2.4kN, 32 mm CoCr articulating heads, and bovine calf serum lubricant. The results of in vitro hip wear simulator tests have not been shown to quantitatively predict clinical wear performance.
Free Radicals
The Biomet ArComXL™ polyethylene material tested is isostatically compression molded, highly crosslinked (50kGy gamma irradiated under argon), and sterilized in air by either gas plasma or ethylene oxlde. ArComXL™ was compared to predicate polyethylene material that was machined from isostatically molded polyethylene that was subsequently gamma sterllized (25-40kGy) in argon. The Biomet ArComXL™ (Gas Plasma sterflized) material, showed a 94% reduction in the number of free radicals (0.22x1055 compared to 3.82x1045 spins/g) versus the predicate polyethylene material. Testing was performed by an independent laboratory using Electron Spin Resonance (ESR). Results of in vitro free radical testing have not been shown to quantitatively predict oxldation resistance.
OxIdative Stability
The Biomet ArComXL™ polyethylene material tested is isostatically compression molded, highly crosslinked (50kGy gamma irradlated under argon), and sterilized in air by elther gas plasma or ethylene oxide, ArComXL™ was compared to predicate polyethylene material that was machined from isostatically molded polyethylene that was subsequently gamma sterilized (25-40KGy) in argon.
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042051
510(k) Summary- Page 3 of 3 ArComXL™ Polyethylene Liners
The Biomet ArComXL™ (Gas Plasma sterlized) material did not show any measurable oxidation by FTIR (oxidation index less than 0.4 throughout the sample) after accelerated aging per ASTM F2003-00, which is designed to simulate several years of shelf-aging in air. In contrast, when the predicate material was removed from inert packaging that was vacuum sealed after purging with argon), it did show measurable levels of oxidation after accelerated aging (oxidation index was greater than 1.1 at a depth of 1 mm). Further, after accelerated aging the average ultimate load for all three ArComXL™ axes (Gas Plasma Sterilized) remained higher than the peak load (31% higher; 91.8N vs. 70.2N); whereas the uttimate load for the isotropic predicate material was significantly less than the peak load (44% lower; 42.6N) as measured by small punch testing, ASTM F2183-02.
Mechanical Strength
The Biomet ArComXL™ polyethylene material tested is isostatically compression molded, highly crosslinked (50kGy gamma irradiated under argon), and sterilized in air by either gas plasma or ethylene oxide. ArComXL™ was compared to predicate polyethylene material that was machined from isostatically molded polyethylene that was subsequently gamma sterilized (25-40kGy) in argon. The Biomet ArComXL™ (EtO sterilized) material showed a 30% increase in ultimate tensile strength (from 47 MPa to 61 MPa) in the longitudinal axis versus the predicate polyethylene material. The tensile testing was performed per ASTM standard D638-02a using Type 5 tensile specimens.
Non-Clinical Testing: Verification activities were performed on ArComXL. Met or exceeded current standards or guidelines.
Clinical Testing: None provided as a basis for substantial equivalence.
All trademarks are property of Biomet, Inc.
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Image /page/3/Picture/1 description: The image shows the logo for the U.S. Department of Health and Human Services. The logo is circular and contains the text "DEPARTMENT OF HEALTH AND HUMAN SERVICES - USA" around the perimeter. Inside the circle is a symbol that resembles a stylized caduceus, with three lines representing snakes intertwined around a staff.
Public Health Service
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
MAR 8 - 2005
Ms. Tracy Bickel Johnson, RAC Regulatory Associate Biomet Manufacturing Corp. 56 East Bell Drive P.O. Box 587 Warsaw, Indiana 46581-0587
Re: K042051
Trade Name: ArComXL™ Polyethylene Liners -Regulation Number: 21 CFR 888.3350, 21 CFR 888.3358 Regulation Name: Hip joint metal/polymer semi-constrained cemented prosthesis, Hip joint metal/polymer/metal semi-constrained porous-coated uncemented prosthesis Regulatory Class: II
Product Code: JDI, LPH Dated: December 6, 2004 Received: December 8, 2004
Dear Ms. Johnson:
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
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Page 2 - Ms. Tracy Bickel Johnson, RAC
CFR Part 807); labeling (21 CFR Part 801); good manufacturing practice requirements as set Of It 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.
This letter will allow you to begin marketing your device as described in your Section 510(k) I mb loter vill and wy of substantial equivalence of your device of your device to a legally premaince hodicate 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 n you attire 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 other Economic 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,
Muriaml Provert
Miriam Provost, Ph.D. Acting Director Division of General, Restorative and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Indications for Use
510(k) Number (if known): K042051
Device Name: ArComXL™ Polyethylene Liners
Indications For Use:
-
- Noninflammatory degenerative joint disease including osteoarthritis and avascular necrosis.
-
- Rheumatoid arthritis.
-
- Correction of functional deformity.
-
- Treatment of non-union, femoral neck fracture, and trochanteric fractures of the proximal femur with head involvement, unmanageable using other techniques.
-
- Revision of previously failed total hip arthroplasty.
Cemented and Uncemented Applications
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)
Mariam C. Parrott
(Division Sign-6 Division of General, Restorative, and Neurological Devices
Page 1 of 3
510(k) Number K072051
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Claim Statements:
Hip Simulator Wear
The Biomet ArComXL™ polyethylene acetabular inserts (Part No.: XL-105933) tested are lsostatically compression molded highly crosslinked components (50kGy gamma irradlated under argon) that are sterilized in alr by either gas plasma or ethylene oxide. ArComXL™ was compared to Identical predicate polyethylene liners (Part No .: 12-105893) that were machined from isostatically molded polyethylene that was subsequently gamma sterlilized (25-40kGy) in argon, A side by side hip simulator wear test of the two materials showed a 47% reduction In the volumetric wear rate (34.9 opposed to 65,8 mm²/10° cycles) for ArComXL™ (EtO sterilized) when compared to the predicate device. All inserts in this study mate with either a 50 or 52mm acetabular shell, have a standard rim, a 32 mm inner diameter, and a 4.75 mm bearing thickness. Testing was performed under multiaxial hip Joint simulation for five (5) million cycles, using a Paul Hip load profile with a maximum load of 2.4kN, 32 mm CoCr articulating heads, and a bovine calf serum lubricant. The results of in vitro hip wear simulator tests have not been shown to quantitatively predict clinical wear performance.
Abrasiye Hip Simulator Wear
The Blomet ArComXL™ polyethylene acetabular inserts (Part No .: XL-105933) tested are Isostatically compression molded highly crosslinked components (50kGy gamma irradiated under argon) that are sterilized in air by either gas plasma or ethylene oxide. ArComXL™ was compared to identical predicate polyethylene liners (Part No .: 12-105893) that were machined from isostatically molded polyethylene that was subsequently gamma sterlized (25-40kGy) in argon. After 5 million cycles of hip simulator wear with no additives, bone cement particulate was added to simulate abrasive conditions for two (2) million cycles. Under abrasive conditions, the Blomet. ArComXL™ (EtO sterllized) polyethylene acetabular insert (Part No.: XL-105933) showed a 64% reduction in volumetric wear rate (109.8 opposed to 309.0 mm²/10° cycles) when compared to the same acetabular inserts fabricated from the predicate polyethylene (Part No.; 12-105893). These inserts mate with either a 50 or 52mm acetabular shell, have a standard rim, a 32mm Inner diameter, and a 4.75 mm bearing thickness. Testing was performed under multlaxial hip joint simulation for two (2) million cycles, using a Paul Hip load profile with a maxlmum foad of 2.4kN, 32 mm CoCr articulating heads, and bovine calf serum lubricant. The results of in vitro hip wear simulator tests have not been shown to quantitatively predict clinical wear performance.
Free Radicals
The Blomet ArComXL™ polyethylene material tested is isostatically compression molded, highly crosslinked (50kGy gamma irradiated under argon), and sterilized in air by either gas plasma or ethylene oxide. ArComXL™ was compared to predicate polyethylene material that was machined from isostatically molded polyethylene that was subsequently gamma sterflized (25-40kGy) in argon. The Blomet ArComXL™ (Gas Plasma sterilized) material, showed a 94% reduction in the number of free radicals (0.22x1055 compared to 3.82x1015 spins/g) versus the predicate polyethylene material. Testing was performed by an Independent laboratory using Electron Spin Resonance (ESR). Results of In vitro free radical testing have not been shown to quantitatively predict oxidation resistance.
Oxidative Stablilty
The Biomet ArComXL™ polyethylene material tested is isostatically compression molded, highly crosslinked (50kGy gamma irradiated under argon), and sterilized in air by elther gas plasma or ethylene oxide. ArComXL™ was compared to predicate polyethylene material that was machined from isostatically molded polyethylene that was subsequently gamma sterilized (25-40KGy) In argon. The Biomet ArComXL™ (Gas Plasma sterllized) material did not show any measurable Page 2 of 3
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oxidation by FTIR (oxidation index less than 0.4 throughout the sample) after accelerated aging per ASTM F2003-00, which is designed to simulate several years of shelf-aging in alr. In contrast, when the predicate material was removed from inert packaging that was vacuum sealed after purging with argon), it did show measurable levels of oxIdation after accelerated aging (oxidation Index was greater than 1.1 at a depth of 1 mm), Further, after accelerated aging the average ultimate load for all three ArComXL™ axes (Gas Plasma Sterilized) remalned higher than the peak load (31% higher; 91.8N vs. 70.2N); whereas the ultimate load for the isotropic predicate material was significantly less than the peak load (44% lower; 42.6N vs. 75.6N) as measured by small punch testing, ASTM F2183-02.
Mechanical Strength
The Biomet ArComXL To polyethylene material tested is isostatically compression molded, highly crosslinked (50kGy gamma irradlated under argon), and sterilized in air by either gas plasma or ethylene oxide. ArComXL™ was compared to predicate polyethylene material that was machined from isostatically molded polyethylene that was subsequently gamma sterilized (25-40KGy) in argon. The Biomet ArComXL™ (EtO sterilized) material showed a 30% increase in ultimate tensile strength (from 47 MPa) in the longitudinal axis versus the predicate polyethylene material. The tensile testing was performed per ASTM standard D638-02a using Type 5 tensile specimens.
§ 888.3358 Hip joint metal/polymer/metal semi-constrained porous-coated uncemented prosthesis.
(a)
Identification. A hip joint metal/polymer/metal semi-constrained porous-coated uncemented prosthesis is a device intended to be implanted to replace a hip 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 has a femoral component made of a cobalt-chromium-molybdenum (Co-Cr-Mo) alloy or a titanium-aluminum-vanadium (Ti-6Al-4V) alloy and an acetabular component composed of an ultra-high molecular weight polyethylene articulating bearing surface fixed in a metal shell made of Co-Cr-Mo or Ti-6Al-4V. The femoral stem and acetabular shell have a porous coating made of, in the case of Co-Cr-Mo substrates, beads of the same alloy, and in the case of Ti-6Al-4V substrates, fibers of commercially pure titanium or Ti-6Al-4V alloy. The porous coating has a volume porosity between 30 and 70 percent, an average pore size between 100 and 1,000 microns, interconnecting porosity, and a porous coating thickness between 500 and 1,500 microns. The generic type of device has a design to achieve biological fixation to bone without the use of bone cement.(b)
Classification. Class II.