LAGUNA PEDICLE SCREW SYSTEM by ALLEZ SPINE, LLC

The Laguna Spinal System is intended for posterior, non-cervical fixation for the following conditions: degenerative disc disease (defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies); spondylolisthesis; trauma (i.e. fracture or dislocation); spinal stenosis; curvatures (i.e. scoliosis, kyphosis and/or lordosis); tumor pseudarthrosis; and/or failed previous fusion.

Device Description

The Laguna TM Pedicle Screw System is intended to help provide correction, immobilization and stabilization of spinal segments as an adjunct to fusion of the thoracic, lumbar and/or sacral space. The Laguna Spinal System consists of a variety of rods and screws, which can be rigidly locked into a variety of configurations, with each construct being tailor made for the individual case. Multi axial implant screws are supplied in 5mm, 6mm, 7mm and 8mm diameter sizes. All sizes are able to receive 5.5mm connecting rods only. The Laguna Spinal System implant components are fabricated from medical grade titanium alloy described by such standards as ASTM F136 or ISO 5832-3 or 5832-2.

AI/ML Overview

The provided text is a 510(k) summary for the Allez Spine Laguna™ Pedicle Screw System and a determination letter from the FDA. This document is for a medical device and therefore, the acceptance criteria and study information typically associated with AI/ML-based software (like those related to diagnostic performance or multi-reader studies) are not applicable.

Instead, the "performance data" section in this submission refers to biomechanical tests for the pedicle screw system, comparing its physical properties and mechanical strength to similar, already-approved implants. This is a common practice for hardware-based medical devices seeking 510(k) clearance via substantial equivalence.

Here's how to interpret the provided information in the context of a medical device submission, focusing on the available "performance data" section:

1. Table of Acceptance Criteria and Reported Device Performance

Acceptance Criteria (Implied)	Reported Device Performance
Equivalence to predicate device in biomechanical properties	"The test results were equivalent to other similar implants"
Sufficient for in vivo loading (implies adequate strength/durability)	"sufficient for in vivo loading"

Explanation:
For a 510(k) submission based on substantial equivalence for a pedicle screw system, the "acceptance criteria" are not explicitly stated in numerical terms like sensitivity/specificity for AI, but are implied by the requirement to demonstrate that the new device performs as safely and effectively as a legally marketed predicate device. This is typically shown through comparative biomechanical testing. The performance data states that the Laguna™ system's biomechanical test results were equivalent to other similar implants and sufficient for in vivo loading, thus meeting the implicit acceptance criteria for substantial equivalence.

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

Sample Size for Test Set: This information is not provided in the document. Biomechanical testing typically involves a specific number of samples of the device components (e.g., screws, rods, constructs) tested under various loading conditions, but the exact number of components tested is not detailed here.
Data Provenance: Not applicable in the human data sense. Biomechanical tests are laboratory-based studies performed on the device itself.

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

Number of Experts: Not applicable. Ground truth for biomechanical tests is established by engineering standards and measurements, not expert clinical interpretation.
Qualifications of Experts: Not applicable.

4. Adjudication Method for the Test Set

Adjudication Method: Not applicable. Biomechanical tests are analytical measurements, not subjective evaluations requiring adjudication.

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

MRMC Study: No, an MRMC comparative effectiveness study was not done. This type of study is relevant for diagnostic or image-interpretation software where human readers' performance with and without AI assistance is evaluated. This device is a surgical implant.
Effect Size of Human Readers Improvement: Not applicable.

6. If a Standalone (Algorithm Only Without Human-in-the-Loop Performance) Was Done

Standalone Performance Study: No, a standalone algorithm performance study was not done. This concept applies to AI/ML software; the device described is a physical implant.

7. The Type of Ground Truth Used

Type of Ground Truth: The ground truth for biomechanical testing is based on engineering principles, material science standards (e.g., ASTM F136 or ISO 5832-3 or 5832-2 for materials), and established mechanical testing protocols. "Equivalence" is determined by comparing measured properties (e.g., strength, stiffness, fatigue resistance) against the predicate device's known performance or against accepted industry standards for spinal implants deemed sufficient for in vivo loading.

8. The Sample Size for the Training Set

Sample Size for Training Set: Not applicable. This concept applies to machine learning models, not physical medical devices undergoing biomechanical testing.

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

Ground Truth for Training Set: Not applicable.

Summary in Context of the Device:

The Allez Spine Laguna™ Pedicle Screw System is a physical implant, not an AI/ML-based software. The "performance data" refers to biomechanical tests conducted to demonstrate that its physical properties and mechanical performance are equivalent to predicate devices already on the market, ensuring its safety and effectiveness for its intended use as an adjunct to spinal fusion. The acceptance criteria are therefore implicit in proving substantial equivalence through these physical tests as opposed to clinical or diagnostic performance criteria.

Summary

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MAY - 4 2005	510(k) Summary of Safety and Effectiveness [in accordance with SMDA of 1990, 21 CFR 807.92(c)]	K0500601/1
Contact:	Mr. Hartmut Loch, RACRegulatory Consultant & Official FDACorrespondent for Allez Spine, LLC.President, HHL Consulting Tel: 619-885-7733Fax: 760-632-9133c/o Allez Spine, LLC.19772 Mac Arthur Blvd., Suite 150Irvine, CA 92612
Trade name:	Allez Spine Laguna TM Pedicle Screw System
Common name:	Spinal Fixation System
Classification name:	Appliance, Fixation, Spinal Interlaminal - § 888.3050 (KWP)Appliance, Fixation, Spinal Intervertebral - § 888.3060 (KWQ)Orthosis, Spinal Pedicle Fixation - § 888.3070 (MNI)Orthosis, SpondylolisthesisSpinal Fixation - § 888.3070 (MNH)
	All Class II, Orthopedic Device Panel 87
Product Code:	KWP, KWQ, MNI & MNH
Device Description and Characteristics:	The Laguna TM Pedicle Screw System is intended to help provide correction,immobilization and stabilization of spinal segments as an adjunct to fusionof the thoracic, lumbar and/or sacral space.
	The Laguna Spinal System consists of a variety of rods and screws, whichcan be rigidly locked into a variety of configurations, with each constructbeing tailor made for the individual case. Multi axial implant screws aresupplied in 5mm, 6mm, 7mm and 8mm diameter sizes. All sizes are able toreceive 5.5mm connecting rods only.
	The Laguna Spinal System implant components are fabricated from medicalgrade titanium alloy described by such standards as ASTM F136 or ISO5832-3 or 5832-2.
Equivalence:	Allez Spine Laguna TM Pedicle Screw System is substantially equivalent tothe CD HORIZON Spinal System, which is manufactured and marketed byMedtronic Sofamore Danek
	K981676 S/E January 28, 1999
Indications:	The Laguna Spinal System is intended for posterior, non-cervical fixation forthe following conditions: degenerative disc disease (defined as back pain ofdiscogenic origin with degeneration of the disc confirmed by history andradiographic studies); spondylolisthesis; trauma (i.e. fracture or dislocation);spinal stenosis; curvatures (i.e. scoliosis, kyphosis and/or lordosis); tumorpseudarthrosis; and/or failed previous fusion.
Performance data:	Biomechanical tests have been performed. The test results were equivalentto other similar implants and are sufficient for in vivo loading.

510(K) PREMARKET NOTIFICATION – Laguna™ Pedicle Screw System
January 10, 2005

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Image /page/1/Picture/12 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. Inside the circle is an abstract symbol resembling an eagle or bird in flight, composed of three curved lines.

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

MAY - 4 2005

Allez Spine, LLC C/o Mr. Hartmut Loch, RAC HHL Consulting, Inc. 2009 Freda Lane Cardiff, California 92007

Re: K050060

Trade/Device Name: LAGUNA™ Pedicle Screw System Regulation Number: 21 CFR 888.3050, 888.3060, 888.3070 Regulation Name: Spinal interlaminal fixation orthosis, Spinal intervertebral body fixation orthosis, Pedicle screw spinal system Regulatory Class: II Product Code: MNI, KWP, KWQ, MNH Dated: April 15, 2005 Received: April 18, 2005

Dear Mr. Loch:

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 11 your de roo 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 or any I with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (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 - Mr. Hartmut Loch, RAC

This letter will allow you to begin marketing your device as described in your Section 510(k) This icticle with anow you to ogin maxing of substantial equivalence of your device to a legally prematicated 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 If you desire specific as at (240) 276-__. Also, please note the regulation entitled, Connact the Oriece of Comparket notification" (21CFR Part 807.97). You may obtain other general information on your responsibilities under the Act from the Division of Small other general informational 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,

Stypt Rhodes

Miriam C. 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): K050060

Device Name:

LAGUNA™ Pedicle Screw System

Indications For Use:

The Laguna Spinal System is intended for posterior, non-The Laguna Spinal System in The following conditions: degenerative disc
cervical fixation for the following conditions: degenerative with cervical itxation for the following our of discogenic origin with disease (denned as back pain of creates by history and degeneration radiographic studies), spondylolisticss(i.e.scoliosis, kyphosis, kyphosis
dislocation); spinal stenosis; curvatures fi.e.sedios failod, previous dislocation), spinal stenoolo, surrature (and/or failed previous fusion.

Prescription Use (Part 21 CFR 801 Subpart D) AND/OR

Over-The-Counter Use (21 CFR 801 Subpart C)

(Please do not WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)

Concurrence of CDRH, Office of Device Evaluation (ODE)

Stpt Clurda

Division of General Restorative, and Neurological Devices

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510(k) Number

Regulation Number and Section

N/A