The 4.5mm Facet Compression Device, which is included in the Disposable Posterior Lumbar Stabilization Procedure Kit, is indicated for spondylolisthesis, spondylolysis, degenerative disc disease (DDD) as defined by back pain of discogenic origin as confirmed by radiographic studies, degeneration of the facets with instability and fracture, pseudoarthrosis or failed previous fusion.

The intended use of the 4.5mm Facet Compression Device is to stabilize the spine as an aid to fusion through bilateral immobilization of the facet joints. The screws are inserted posteriorly through the superior side of the facet, across the facet joint and into the pedicle. The 4.5mm Facet Compression Device is indicated for bilateral facet fixation, with or without bone graft, at single or multiple levels from L1 to S1. The intended use of the associated manual surgical instruments is to aid in the implantation of the 4.5mm Facet Compression Device.

Device Description

The 4.5mm Facet Compression Device(s) contained in the Disposable Posterior Lumbar Stabilization Procedure Kit is a double-helix screw with a compression-locking collar and self-retaining washer. It is available as 4.5mm diameter device and is obtainable in a 30-40mm length range. Disposable surgical instruments for use in implanting the device are also included in the kit. The kit is provided "STERILE"; sterilization is by gamma radiation. The re-usable Compression Tool is provided separately in a "NONSTERILE" condition; sterilization is by moist heat (steam autoclaye) and is performed on-site.

AI/ML Overview

Here's an analysis of the provided 510(k) summary regarding the Disposable Posterior Lumbar Stabilization Procedure Kit, focusing on the requested information:

1. Table of Acceptance Criteria and Reported Device Performance

The provided 510(k) summary for the Triage Medical Disposable Posterior Lumbar Stabilization Procedure Kit (K062391) is a premarket notification for a Class II medical device. For such devices, the acceptance criteria are generally based on substantial equivalence to a previously cleared predicate device. This typically means demonstrating that the new device has the same intended use, similar technological characteristics, and that any differences do not raise new questions of safety or effectiveness.

The document does not explicitly state numerical "acceptance criteria" in terms of performance metrics (e.g., a specific strength value that must be met). Instead, the performance is evaluated in comparison to the predicate device to establish substantial equivalence.

Acceptance Criteria Category	Specific Criteria (Implicit from 510(k) process)	Reported Device Performance
Material Biocompatibility	Meets established material standards for implants.	Made of titanium alloy meeting ASTM F-136. Materials are identical to those in legally marketed orthopedic spinal fixation devices.
Functional Performance	Device performs its intended stabilization function safely and effectively.	"Performance test results indicate that the device is safe and satisfies functional and performance requirements when used as indicated."
Instrument Performance	Associated surgical instruments perform their intended function safely and effectively.	"The associated instruments have also met functional and performance requirements."
Substantial Equivalence	Demonstrates equivalence in intended use, technological characteristics, and safety/effectiveness to predicate device.	"Test results demonstrate that the devices contained in the Disposable Posterior Lumbar Stabilization Procedure Kit is substantially equivalent to the predicate devices and are capable of safely and effectively performing the stated intended use."

2. Sample Size Used for the Test Set and Data Provenance

The 510(k) summary does not provide details on specific sample sizes for any mechanical or performance testing. It generally states "performance test results indicate..." without quantifying the number of units tested.

Regarding data provenance, the document does not specify the country of origin for the testing or whether the data was retrospective or prospective. Given the nature of a 510(k) for an orthopedic implant, the testing would typically involve in vitro mechanical testing and material characterization, rather than clinical data in the same way an AI/software device would generate.

3. Number of Experts Used to Establish Ground Truth for the Test Set and Qualifications of those Experts

This type of information is not applicable to this 510(k) document. The device is a physical medical implant (a facet screw and associated instruments). "Ground truth" established by experts, especially for a "test set" in the context of diagnostic or AI performance, is not a relevant concept for this type of device submission. The primary evaluation is based on engineering principles, material science, and mechanical testing, often performed by engineers and material scientists, not clinical experts establishing ground truth from patient data.

4. Adjudication Method for the Test Set

This is not applicable to this 510(k) document for the same reasons as point 3. Adjudication methods like 2+1 or 3+1 are used in clinical studies, particularly for diagnostic devices where human expert disagreement needs resolution. This is not how the performance of a facet screw is assessed for a 510(k) submission.

5. If a Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study Was Done, and Effect Size

No, a Multi-Reader Multi-Case (MRMC) comparative effectiveness study was not done or reported in this 510(k) summary. MRMC studies are typically performed for diagnostic imaging devices where human readers interpret medical images, often assisted by AI. This device is a surgical implant; therefore, MRMC studies are not relevant to its evaluation.

6. If a Standalone (i.e., algorithm only without human-in-the-loop performance) Was Done

This is not applicable. The device is a physical surgical implant and instruments; it does not involve an algorithm or AI.

7. The Type of Ground Truth Used

As mentioned, "ground truth" in the context of expert consensus, pathology, or outcomes data is not directly relevant for the performance evaluation of this specific device for its 510(k) submission. The "ground truth" for the device's characteristics and performance would be derived from:

Material specifications: Conformance to ASTM F-136.
Mechanical testing standards: (Implicitly) demonstrating strength, fatigue resistance, and other biomechanical properties relevant to spinal stabilization.
Predicate device's known performance: The BONE-LOK® 4.5mm Facet Screw, which serves as the benchmark for "substantial equivalence."

8. The Sample Size for the Training Set

This is not applicable. The device is a physical implant, not an AI or machine learning model that requires a training set.

9. How the Ground Truth for the Training Set Was Established

This is not applicable for the same reasons as point 8.

Summary

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K06239l

510(k) SUMMARY OF SAFETY AND EFFECTIVENESS

SUBMITTER INFORMATION

A.	Company Name:	Triage Medical, Inc
B.	Company Address:	13700 Alton ParkwaySuite 160Irvine, CA 92618
C.	Company Phone:	(949) 472-0006
D.	Company Facsimile:	(949) 472-0016
E.	Contact Person:	Gayle HirotaManager, Quality Assurance & RegulatoryAffairs

DEVICE IDENTIFICATION

A.	Trade Name:	Disposable Posterior Lumbar StabilizationProcedure Kit and Re-usable Compression Tool
B.	Catalog Number:	9045-01, 9045-02 and 6113-00
C.	Common Name:	Facet Screw and associated manual surgicalinstruments
D.	Classification Name:	Unclassified, various manual surgicalinstruments
E.	Product Code:	MRW, HXI, HTW, HXX, HWB, HWX, MJG, HWN
F.	Device Panel:	Orthopedic and General and Plastic Surgery
G.	Device Class:	Class II

IDENTIFICATION OF MODIFIED DEVICE

The Disposable Posterior Lumbar Stabilization Procedure Kit is similar in design and intended use to the Triage Medical BONE-LOK® 4.5mm Facet Screw and BONE-LOK® FS Instrument Kit cleared under 510(k) K043351.

DEVICE DESCRIPTION

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also included in the kit. The kit is provided "STERILE"; sterilization is by gamma radiation. The re-usable Compression Tool is provided separately in a "NONSTERILE" condition; sterilization is by moist heat (steam autoclaye) and is performed on-site.

INDICTIONS FOR USE

The 4.5mm Facet Compression Device with Washer, which is included in the Disposable Posterior Lumbar Stabilization Procedure Kit, is indicated for spondylolisthesis. spondylolysis, degenerative disc disease (DDD) as defined by back pain of discogenic origin as confirmed by radiographic studies, degeneration of the facets with instability and fracture, pseudoarthrosis or failed previous fusion.

INTENDED USE

The intended use of the 4.5mm Facet Compression Device contained in the Disposable Posterior Lumbar Stabilization Disposable Kit is to stabilize the spine as an aid to fusion through bilateral immobilization of the facet joints, with or without bone graft at single or multiple levels from L1 to S1. The intended use of the associated manual surgical instruments is to aid in the implantation of the 4.5mm Facet Compression Device.

TECHNOLOGICAL CHARACTERISTICS

The 4.5mm Facet Compression Device contained in the Disposable Posterior Lumbar Stabilization Procedure Kit is identical to the previously cleared BONE-LOK® 4.5mm Facet Screw. The manual surgical instruments are substantially equivalent to the instruments cleared as the BONE-LOK® FS Instrument Kit.

BIOCOMPATIBILITY AND PERFORMANCE DATA

The 4.5mm Facet Compression Device is made of a titanium alloy, which meets the requirements of ASTM F-136. The materials for the devices as well as the instruments are identical to materials used in a myriad of legally marketed orthopedic spinal fixation devices and instruments.

Performance test results indicate that the device is safe and satisfies functional and performance requirements when used as indicated. The associated instruments have also met functional and performance requirements.

CONCLUSIONS DRAWN FROM STUDIES

Test results demonstrate that the devices contained in the Disposable Posterior Lumbar Stabilization Procedure Kit is substantially equivalent to the predicate devices and are capable of safely and effectively performing the stated intended use.

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Image /page/2/Picture/1 description: The image shows the logo for the U.S. Department of Health and Human Services. The logo features the department's name in a circular arrangement around a symbol. The symbol consists of four stylized human figures in profile, arranged in a row and facing to the right.

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

SEP 1 4 2006

Triage Medical, Inc. % Ms. Gayle Hirota Manager, Quality Assurance and Regulatory Affairs 13700 Alton Parkway, Suite 160 Irvine. California 92618

Re: K062391

Trade/Device Name: Disposable Posterior Lumbar Stabilization (PLS) Procedure Kit Regulation Name: facet screw spinal device system Regulatory Class: Unclassified Product Code: MR W Dated: August 14, 2006 Received: August 16, 2006

Dear Ms. Hirota:

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 $07): iabeling (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.

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Page 2 – Ms. Gayle Hirota

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 (240) 276-3150 or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html.

Sincerely vours.

barbare Buchin

Mark N. Melkerson 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):

Device Name:

Indications For Use:

K062391

Disposable Posterior Lumbar Stabilization (PLS) Procedure Kit

The intended use of the 4.5mm Facet Compression Device is to stabilize the spine as an aid to fusion through bilateral immobilization of the facet joints. The screws are inserted posteriorly through the superior side of the facet, across the facet joint and into the pedicle. The 4.5mm Facet Compression Device is indicated for bilateral facet fixation. with or without bone graft, at single or multiple levels from L1 to S1. The intended use of the associated manual surgical instruments is to aid in the implantation of the 4.5mm Facet Compression Device.

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)

Karlae Brickner/fs MKM
(Division Sign Off)

Division of General. Restorative. and Neurological Devices

510(k) Number K062391

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Regulation Number and Section

N/A