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The SFX Snap-Fit Cross Connectors are designed to transversely connect two rods used in spinal instrumentation constructs. The SFX Snap-Fit Cross Connector devices are intended for use with components of the commercially available EXPEDIUM™ 5.5mm Spine System.

The uses of the legally marketed EXPEDIUM™ 5.5mm Spine System are as follows:

The EXPEDIUM™ Spine System is intended for noncervical pedicle fixation and nonpedicle fixation for the following indications: 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; pseudoarthrosis; and failed previous fusion in skeletally mature patients.

The SFX Snap-Fit Cross Connectors are designed to transversely connect two rods used in spinal instrumentation constructs. The SFX Snap-Fit Cross Connector devices are intended for use with components of the commercially available VIPER™ System.

The uses of the legally marketed VIPER™ are as follows:

The VIPER Spine System is intended for noncervical pedicle fixation and nonpedicle fixation for the following indications: 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; pseudoarthrosis; and failed previous fusion in skeletally mature patients.

When used in a percutaneous, posterior approach with MIS instrumentation, the VIPER System is intended for noncervical pedicle fixation and nonpedicle fixation for the following indications: 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; pseudoarthrosis; and failed previous fusion in skeletally mature patients.

The SFX Snap-Fit Cross Connectors are designed to transversely connect two rods used in spinal instrumentation constructs. The SFX Snap-Fit Cross Connector devices are intended for use with components of the commercially available VSP® 6.35mm Spine System.

The uses of the legally marketed VSP® Spine System are as follows:

The VSP System is indicated for degenerative spondylolisthesis, in skeletally mature patients, with objective evidence of neurologic impairment, fracture, dislocation, scoliosis, kyphosis, spinal tumor, and failed previous fusion (pseudoarthrosis). Levels of fixation are for the thoracic, lumbar and sacral spine.

The VSP® Spine System is also indicated for pedicle screw fixation for severe spondylolisthesis (Grade 3 and 4) at L5-S1, in skeletally mature patients, when autogeous bone graft is used, when affixed to the posterior lumbosacral spin, and intended to be removed after solid fusion is attained. Levels of fixation are from L3-S1.

The SFX Snap-Fit Cross Connectors are designed to transversely connect two rods used in spinal instrumentation constructs. The SFX Snap-Fit Cross Connector devices are intended for use with components of the commercially available ISOLA® 6.35mm Spine System.

The uses of the legally marketed ISOLA 6.35mm Spine System are as follows:

The ISOLA Spine Systems is a pedicle screw system intended to provide immobilization and stabilization of spinal segments in skeletally mature patients as an adjunct to fusion in the treatment of the following acute and chronic instabilities or deformities of the thoracic, lumbar, and sacral spine: degenerative spondylolisthesis with objective evidence of neurological impairment, fracture, dislocation, scoliosis, spinal tumor, and failed previous fusion (pseudarthrosis).

The ISOLA Spine Systems is also indicated for pedicle screw fixation for the treatment of severe spondylolisthesis (Grades 3 and 4) of the L5-S1 vertebra in skeletally mature patients receiving fusion by autogenous bone graft having implants attached to the lumbar and sacral spine (L3 to sacrum) with removal of the implants after the attainment of a solid fusion.

The ISOLA Spine Systems is also a hook and sacral/iliac screw fixation system of the noncervical spine indicated for degenerative disc disease (defined as discogenic back pain with degeneration of the disc confirmed by history and radiographic studies), spondylolisthesis, trauma (fracture and/or dislocation), spinal stenosis, deformities (scoliosis, lordosis and/or kyphosis), tumor, and previous failed fusion (pseudarthrosis).

The ISOLA Spinal System when used with pedicle screws is indicated for degenerative disc disease (defined as discogenic back pain with degeneration of the disc confirmed by history and radiographic studies). Levels of fixation are for the thoracic, lumbar and sacral spine.

The SFX Snap-Fit Cross Connectors are designed to transversely connect two rods used in spinal instrumentation constructs. The SFX Snap-Fit Cross Connector devices are intended for use with components of the commercially available MOSS® MIAMI 5.5mm and 6.35mm Spine Systems.

The uses of the legally marketed MOSS MIAM1 5.5mm and 6.35mm Spine Systems are as follows:

When used as a posterior, noncervical hook, and/or sacral/iliac screw fixation system, or as an anterior, thoracic/lumbar screw fixation system, the MOSS MIAMI Spinal System is intended to treat scoliosis, kyphosis and lordosis, fracture, loss of stability due to tumor, spinal stenosis, spondylolisthesis, a previously failed fusion surgery or degenerative disc disease (i.e., discogenic back pain with degeneration of the disc confirmed by patient history and radiographic studies).

When used as a pedicle screw fixation system of the noncervical spine in skeletally mature patients, the MOSS MIAMI Spinal System is indicated for degenerative spondylolisthesis with objective evidence of neurologic impairment, fracture, dislocation, scoliosis, kyphosis, spinal tumor and failed previous fusion (pseudoarthrosis).

The MOSS MIAMI Spine Systems is also indicated for pedicle screw fixation in skeletally mature patients with severe spondylolisthesis (Grades 3 and 4) of the L5-S1 vertebral joint, having fusions with autogenous bone graft, with the device fixed or attached to the lumbar and sacral spine (levels of pedicle screw fixation are L3-S1) and for whom the device system is intended to be removed after solid fusion is attained.

The SFX Snap-Fit Cross Connectors are designed to transversely connect two rods used in spinal instrumentation constructs. The SFX Snap-Fit Cross Connector devices are intended for use with components of the commercially available MONARCH® 5.5mm and 6.35mm Spine Systems.

The uses of the legally marketed MONARCH 5.5mm and 6.35mm Spine Systems are as follows:

The MONARCH Spine Systems is a pedicle screw system intended to provide immobilization and stabilization of spinal segments in skeletally mature patients as an adjunct to fusion in the treatment of the following acute and chronic instabilities or deformities of the thoracic, lumbar, and sacral spine: degenerative spondylolisthesis with objective evidence of neurological impairment, fracture, dislocation, scoliosis, kyphosis, spinal tumor, and failed previous fusion (pseudoarthrosis).

The MONARCH Spine Systems is also indicated for pedicle screw fixation for the treatment of severe spondylolisthesis (Grades 3 and 4) of the L5-S1 vertebra in skeletally mature patients receiving fusion by autogenous bone graft having implants attached to the lumbar and sacral spine (L3 to sacrum) with removal of the implants after the attainment of a solid fusion.

The MONARCH Spine Systems is also a hook and sacral/iliac screw fixation system of the noncervical spine indicated for degenerative disc disease (defined as discogenic back pain with degeneration of the disc confirmed by history and radiographic studies), spondylolisthesis, trauma (fracture and/or dislocation), spinal stenosis, deformities (scoliosis, lordosis and/or kyphosis), tumor, and previous failed fusion (pseudarthrosis).

The MONARCH Spine System when used with pedicle screws is indicated for degenerative disc disease {defined as discogenic back pain with degeneration of the disc confirmed by history and radiographic studies). Levels of fixation are for the thoracic, lumbar and sacral spine.

The SFX Snap-Fit Cross Connectors are designed to transversely connect two rods used in spinal instrumentation constructs. The SFX Snap-Fit Cross Connector devices are intended for use with components of the commercially available TIMX® 6.35mm Spine System.

The uses of the legally marketed TIMX Spine System are as follows:

The TIMX Spine Systems is a pedicle screw system intended to provide immobilization and stabilization of spinal segments in skeletally mature patients as an adjunct to fusion in the treatment of the following acute and chronic instabilities or deformities of the thoracic, lumbar, and sacral spine: degenerative spondylolisthesis with objective evidence of neurological impairment, fracture, dislocation, scoliosis, kyphosis, spinal tumor, and failed previous fusion (pseudarthrosis).

The TIMX Spine Systems is also indicated for pedicle screw fixation for the treatment of severe spondylolisthesis (Grades 3 and 4) of the L5-S1 vertebra in skeletally mature patients receiving fusion by autogenous bone graft having implants attached to the lumbar and sacral spine (L3 to sacrum) with removal of the implants after the attainment of a solid fusion.

The TIMX Spine Systems is also a hook and sacral/iliac screw fixation system of the noncervical spine indicated for degenerative disc disease (defined as discogenic back pain with degeneration of the disc confirmed by history and radiographic studies), spondylolisthesis, trauma (fracture and/or dislocation), spinal stenosis, deformities (scollosis, lordosis and/or kyphosis), tumor, and previous failed fusion (pseudarthrosis).

The SFX Connector is designed to transversely connect two rods used in spinal instrumentation constructs. The connector minimizes the torsional forces on the construct, thus reducing the micromotion and the probability of the construct shifting after placement. It is designed to accommodate the 5.5mm spinal rods of the EXPEDIUM Spine System.

The SFX Connector is designed to transversely connect two rods used in spinal instrumentation constructs. The connector minimizes the torsional forces on the construct, thus reducing the micromotion and the probability of the construct shifting after placement. It is designed to accommodate the 5.5mm spinal rods of the VIPER System.

The SFX Connector is designed to transversely connect two rods used in spinal instrumentation constructs. The connector minimizes the torsional forces on the construct, thus reducing the micromotion and the probability of the construct shifting after placement. It is designed to accommodate the 6.35mm spinal rods of the VSP Spine System.

The SFX Connector is designed to transversely connect two rods used in spinal instrumentation constructs. The connector minimizes the torsional forces on the construct, thus reducing the micromotion and the probability of the construct shifting after placement. It is designed to accommodate the 6.35mm spinal rods of the ISOLA Spine System.

The SFX Connector is designed to transversely connect two rods used in spinal instrumentation constructs. The connector minimizes the torsional forces on the construct, thus reducing the micromotion and the probability of the construct shifting after placement. It is designed to accommodate the 5.5mm and 6.35mm spinal rods of the MOSS MIAMI Spine System.

The SFX Connector is designed to transversely connect two rods used in spinal instrumentation constructs. The connector minimizes the torsional forces on the construct, thus reducing the micromotion and the probability of the construct shifting after placement. It is designed to accommodate the 5.5mm and 6.35mm spinal rods of the MONARCH Spine System.

The SFX Connector is designed to transversely connect two rods used in spinal instrumentation constructs. The connector minimizes the torsional forces on the construct, thus reducing the micromotion and the probability of the construct shifting after placement. It is designed to accommodate the 6.35mm spinal rods of the TIMX Spine System.

The provided documentation describes the SFX Snap-Fit Cross Connector, a medical device designed to connect two rods in spinal instrumentation constructs, aimed at reducing micromotion and construct shifting. The submission is a 510(k) premarket notification, which means the device is seeking clearance by demonstrating substantial equivalence to a legally marketed predicate device, rather than proving novel effectiveness or safety through extensive clinical trials as would be required for a PMA.

Therefore, the "study" described focuses on performance data and demonstrating substantial equivalence to the predicate device (MOSS MIAMI Spinal System Transverse Connector, K955348), rather than a clinical study evaluating human reader performance with or without AI, or establishing ground truth through expert consensus as might be seen for diagnostic AI devices.

Here's an analysis of the provided information based on your requested categories:

1. Table of Acceptance Criteria and Reported Device Performance

The submission does not provide specific, quantifiable acceptance criteria or reported device performance in the format typically seen for a diagnostic or AI device (e.g., sensitivity, specificity, AUC). Instead, it states that "Performance data were submitted to characterize the SFX Snap-Fit Cross Connector." This type of performance data for a spinal implant device typically includes mechanical testing results to demonstrate structural integrity, fatigue life, and other physical properties. The goal of these tests is usually to show that the new device performs at least as well as, or is substantially equivalent to, the predicate device in these mechanical aspects.

Since the specific mechanical test results and associated acceptance criteria are not detailed in the provided text, a table cannot be constructed with this information. However, based on the nature of a 510(k) clearance for such a device, the implicit acceptance criteria would involve:

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

This is a physical medical device, not an AI or diagnostic software. Therefore, the "test set" would consist of physical samples of the SFX Snap-Fit Cross Connector and possibly constructs built with it.

• Sample Size: The document does not specify the sample size used for mechanical testing. This information is typically found in the full test reports, which are not included in this summary.
• Data Provenance: The testing would be conducted in a laboratory setting by the manufacturer (DePuy Spine) or a contract testing facility. "Country of origin of data" is not applicable in the typical sense; the tests conform to international standards (e.g., ASTM). The data would be prospective in the sense that the tests are designed and performed to evaluate the new device, but not in the context of patient data.

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

This concept is not applicable to this type of device. "Ground truth" in the context of an implantable spinal fixation device is established through objective mechanical testing against recognized industry standards and direct comparison to the predicate device's performance. Expert clinicians would evaluate the intended use and design features, but not establish "ground truth" on performance in the same way radiologists might for an imaging algorithm.

4. Adjudication Method for the Test Set

Not applicable. Adjudication methods like 2+1 or 3+1 are used for human interpretation of clinical data, not for objective mechanical performance testing of a physical implant.

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

Not applicable. MRMC studies are relevant for diagnostic devices that involve human interpretation of medical images or data. This device is a physical spinal implant.

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

Not applicable. This is not an algorithm.

7. The Type of Ground Truth Used

The "ground truth" for this device's performance is established by:

• Mechanical Testing Standards: Adherence to relevant ASTM (American Society for Testing and Materials) or ISO (International Organization for Standardization) standards for spinal implants, which define acceptable mechanical properties (e.g., fatigue strength, static force resistance).
• Predicate Device Performance: Performance data demonstrating substantial equivalence to the legally marketed MOSS MIAMI Spinal System Transverse Connector (K955348) under similar testing conditions. This means the new device must perform comparably to or better than the predicate.

8. The Sample Size for the Training Set

Not applicable. This device does not use a "training set" in the context of machine learning or AI.

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

Not applicable. As this is not an AI/ML device, there is no training set or associated ground truth establishment process in that sense.

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