K Number
K991869
Device Name
COBREX HIP STEM, MODEL 01-128-XXXXX
Manufacturer
Date Cleared
1999-07-14

(43 days)

Product Code
Regulation Number
888.3350
AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdparty
Intended Use
The Implex Cobrex Hip Stem is intended for use where severe degeneration, trauma, or other pathology of the hip joint indicates cemented or hybrid total hip arthroplasty.
Device Description
The Implex Cobrex Hip Stem, cemented, is a modular femoral hip stem manufactured from forged cobalt chromium alloy conforming to ASTM F-799. The Cobrex hip stem has a 12/14 taper and is available in five stem sizes (10, 11, 12, 13, and 14) with proportionally increasing neck offsets (24 mm, 30 mm, and 36 mm). Also, the Cobrex hip stem is collared with a cobra type flange on the proximal section.
More Information

Not Found

Not Found

No
The description focuses on the material, design, and mechanical properties of a hip stem, with no mention of software, algorithms, or AI/ML capabilities.

Yes
The device is a hip stem intended for total hip arthroplasty, which is a surgical procedure to treat hip joint pathology, fitting the definition of a therapeutic device.

No
The device, the Implex Cobrex Hip Stem, is an implant used for hip replacement surgery due to severe degeneration, trauma, or other pathology. It is a treatment device, not designed to diagnose conditions.

No

The device description explicitly states it is a "modular femoral hip stem manufactured from forged cobalt chromium alloy," indicating it is a physical implant, not software.

No, this device is not an IVD (In Vitro Diagnostic).

Here's why:

  • IVD Definition: In Vitro Diagnostics are medical devices used to examine specimens taken from the human body (like blood, urine, tissue) to provide information about a person's health. This information is used for diagnosis, monitoring, or screening.
  • Device Description: The Implex Cobrex Hip Stem is a surgical implant designed to replace a damaged hip joint. It is a physical device inserted into the body during surgery.
  • Intended Use: The intended use clearly states it's for "cemented or hybrid total hip arthroplasty," which is a surgical procedure.

The description and intended use of the Implex Cobrex Hip Stem are consistent with a surgical implant, not a device used for testing samples outside the body.

N/A

Intended Use / Indications for Use

The Implex Cobrex Hip Stem is intended for use where severe degeneration, trauma, or other pathology of the hip joint indicates cemented or hybrid total hip arthroplasty. The Cobrex Hip Stem is intended for cemented use with Continuum® Hip Stem Components only.

Product codes

JDI

Device Description

The Implex Cobrex Hip Stem, cemented, is a modular femoral hip stem manufactured from forged cobalt chromium alloy conforming to ASTM F-799. The Cobrex hip stem has a 12/14 taper and is available in five stem sizes (10, 11, 12, 13, and 14) with proportionally increasing neck offsets (24 mm, 30 mm, and 36 mm). Also, the Cobrex hip stem is collared with a cobra type flange on the proximal section.

Mentions image processing

Not Found

Mentions AI, DNN, or ML

Not Found

Input Imaging Modality

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Anatomical Site

Hip joint

Indicated Patient Age Range

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Intended User / Care Setting

Not Found

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

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

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Summary of Performance Studies

Fatigue testing has been provided to demonstrate that the Cobrex hip stem will perform as intended.

Key Metrics

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Predicate Device(s)

Not Found

Reference Device(s)

Not Found

Predetermined Change Control Plan (PCCP) - All Relevant Information

Not Found

§ 888.3350 Hip joint metal/polymer semi-constrained cemented prosthesis.

(a)
Identification. A hip joint metal/polymer semi-constrained cemented 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 includes prostheses that have a femoral component made of alloys, such as cobalt-chromium-molybdenum, and an acetabular resurfacing component made of ultra-high molecular weight polyethylene and is limited to those prostheses intended for use with bone cement (§ 888.3027).(b)
Classification. Class II.

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Image /page/0/Picture/1 description: The image contains a sequence of alphanumeric characters. The sequence starts with the letter 'K', followed by the number '991869'. The characters are handwritten and slightly slanted to the right.

510(k) SUMMARY OF SAFETY AND EFFECTIVENESS

Submitter Name:Implex Corp.
Submitter Address:80 Commerce Drive
Allendale, New Jersey 07401-1600
Contact Person:John Schalago or Robert Poggie
Phone Number:(201) 818-1800
Fax Number:(201) 818-0567
Date Prepared:May 28, 1999
Device Trade Name:Implex Cobrex Hip System, Femoral Component
Device Common Name:Hip Prosthesis, Femoral Component Cemented or
Uncemented
Classification Number
and Name:21 CFR § 888.3360
Substantial Equivalence:The term "substantial equivalence" as used in this
510(k) notification is limited to the definition of
substantial equivalence found in the Federal Food,
Drug and Cosmetic Act, as amended and as applied
under 21 CFR 807, Subpart E under which a device
can be marketed without premarket approval or
reclassification. A determination of substantial
equivalency under this notification is not intended to
have any bearing whatsoever on the resolution of
patent infringement suits or any other patent matters.
No statements related to, or in support of substantial
equivalence herein shall be construed as an
admission against interest under the US Patent Laws
or their application by the courts.
Device Description:The Implex Cobrex Hip Stem, cemented, is a modular
femoral hip stem manufactured from forged cobalt
chromium alloy conforming to ASTM F-799. The Cobrex
hip stem has a 12/14 taper and is available in five stem
sizes (10, 11, 12, 13, and 14) with proportionally
increasing neck offsets (24 mm, 30 mm, and 36 mm).
Also, the Cobrex hip stem is collared with a cobra type
flange on the proximal section.
Indications for Use:The Implex Cobrex Hip Stem is intended for use where
severe degeneration, trauma, or other pathology of the hip
joint indicates cemented or hybrid total hip arthroplasty.
Device Technological
Characteristics and
Comparison to
Predicate Device:A comparison of technological characteristics of the
subject and predicate devices supports a determination of
substantial equivalence.
Performance Data:Fatigue testing has been provided to demonstrate that the
Cobrex hip stem will perform as intended.
Conclusion:The Implex Cobrex Hip Stem is substantially equivalent to
the identified predicate devices.

The Cobrex Hip Stem is intended for cemented use with Continuum® Hip Stem Components only.

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Image /page/2/Picture/1 description: The image shows the logo for the Department of Health & Human Services (HHS). The logo features a stylized caduceus, which is a symbol often associated with medicine and healthcare. The words "DEPARTMENT OF HEALTH & HUMAN SERVICES • USA" are arranged around the caduceus in a circular fashion.

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

JUL 14 1999

Mr. John A Schalago Regulatory Affairs Manager Implex® Corp. 80 Commerce Drive Allendale, New Jersey 07401-1600

Re: K991869 Trade Name: Cobrex Hip Stem Regulatory Class: II Product Code: JDI Dated: May 28, 1999 Received: June 1, 1999

Dear Mr. Schalago:

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. 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 (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 Regulation (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 regulations.

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Page 2 - Mr. John A. Schalago

This letter will allow you to begin marketing your device as described in your 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 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 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,

C. Collin Wilcox, Ph.D., M.D.

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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Cobrex Hip Stem
Implex Corp
510(k) Number (if known):K991869
------------------------------------

Device Name:

Cobrex Hip Stem

Indications For Use:

The Implex Cobrex Hip Stem is intended for use where severe degeneration, trauma, or other pathology of the hip joint indicates cemented or hybrid total hip arthroplasty.

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

Concurrence of CDRH; Office of Device Evaluation (ODE)

Prescription Use
X
(Per 21 CFR 801.109)
OR...
Over-The-Counter Use

(Optional Format 1-2-96)

(Division Sign-Off)
Division of General Restorative Devices
510(k) Number K991869