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ASTRA and AVANT Navigated Reusable Instruments are indicated for preparation and placement of SpineCraft ASTRA Spine system pedicle screws during thoracolumbar sacroiliac spinal surgery to assist surgeon in precisely locating anatomical structures in either open, minimally invasive procedures, or percutaneous, procedures.

ASTRA and AVANT Navigated Reusable Instruments are specifically designed for use with Medtronic StealthStation® System S8 (V1.2.0), which is indicated for any medical condition in which the use of stereotactic surgery may be appropriate and where reference to a rigid anatomical structure such as a vertebra can be identified relative to a CT or MR based model, fluoroscopy images, or digitized landmarks of the anatomy. Use of the ASTRA and AVANT Navigated Reusable Instruments is limited to use only with ASTRA Spine System implants.

ASTRA-OCT Navigated Reusable instruments are indicated for preparation and placement of SpineCraft ASTRA-OCT Spine screws during cervico-thoracic spinal surgery to assist surgeon in precisely locating anatomical structures in open procedures.

ASTRA-OCT Navigated Reusable Instruments are specifically designed for use with Medtronic StealthStation® System S8 (V1.2.0), which is indicated for any medical condition in which the use of stereotactic surgery may be appropriate and where reference to a rigid anatomical structure such as a vertebra can be identified relative to a CT or MR based model, fluoroscopy images, or digitized landmarks of the anatomy. Use of the ASTRA-OCT Navigated Reusable Instruments is limited to use only with ASTRA-OCT Spine System implants.

The ASTRA, AVANT and ASTRA-OCT Navigation instruments are non-sterile, reusable surgical instruments designed for compatibility with the Medtronic NavLock Trackers and to ultimately provide seamless interaction with the Medtronic StealthStation® System. The ASTRA and AVANT Navigation instruments are for use with ASTRA Spine System pedicle screws and the ASTRA-OCT Navigation instruments are for use with ASTRA-OCT Spine System pedicle screws. The instruments are manufactured from medical grade stainless steel. The ASTRA-OCT navigation instruments are available in same or similar diameters and lengths as the corresponding predicate Medtronic navigated instruments. This includes awls, probes, drill bits, taps and screwdrivers.

This looks like a 510(k) summary for a medical device rather than a study evaluating the performance of an AI/ML powered device. As such, it does not contain the specific information requested in the prompt regarding acceptance criteria and a study proving the device meets those criteria for an AI/ML system.

However, I can extract information related to the device's performance testing based on the provided document:

1. A table of acceptance criteria and the reported device performance

The document provides a list of performance tests conducted according to ASTM F2554-18, implying that the device performance demonstrated it "perform[s] as designed, are suitable for their intended use and are substantially equivalent to the cited corresponding predicate devices under the same test conditions." However, specific numerical acceptance criteria (e.g., "accuracy must be greater than X") and corresponding numerical performance results are not provided in this summary.

2. Sample size used for the test set and the data provenance (e.g., country of origin of the data, retrospective or prospective)

This document describes non-clinical performance testing of physical surgical instruments, not a study involving patient data or an AI/ML algorithm's test set. Therefore, information regarding "sample size for the test set" and "data provenance" (country of origin, retrospective/prospective) is not applicable in the context of this 510(k) summary. The testing was laboratory-based.

3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts (e.g. radiologist with 10 years of experience)

This is not applicable as the document describes non-clinical performance testing of physical instruments, not an AI/ML algorithm requiring expert ground truth for a test set.

4. Adjudication method (e.g. 2+1, 3+1, none) for the test set

This is not applicable for the reasons stated above.

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

A multi-reader multi-case (MRMC) comparative effectiveness study was not performed as this device is a set of navigated surgical instruments, not an AI/ML assistance system for human readers. No clinical studies were performed.

6. If a standalone (i.e. algorithm only without human-in-the-loop performance) was done

This refers to an AI/ML algorithm. The device described, "ASTRA & AVANT Navigation Instruments System and ASTRA-OCT Navigation Instruments System," is a set of non-sterile, reusable surgical instruments designed for compatibility with a navigation system (Medtronic StealthStation® System S8). It is not a standalone AI/ML algorithm. Non-clinical performance testing was done on the instruments themselves.

7. The type of ground truth used (expert consensus, pathology, outcomes data, etc)

For the non-clinical performance testing, the "ground truth" would be established by the precise measurement systems and methodologies outlined in ASTM F2554-18 for determining positional accuracy. This is a technical standard measurement, not expert consensus, pathology, or outcomes data typically associated with AI/ML clinical studies.

8. The sample size for the training set

This is not applicable as there is no AI/ML algorithm being trained by this device.

9. How the ground truth for the training set was established

This is not applicable for the reasons stated above.

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The ASTRA Spine System is intended to provide immobilization of spinal segments in skeletally mature patients as an adjunct to fusion in the following acute and chronic instabilities or deformities of the thoracic. lumbar, and sacral spine: severe spondylolisthesis (grades 3 and 4) of the L5-S1 vertebra: degenerative spondylolisthesis with objective evidence of neurologic impairment; fracture; dislocation; scoliosis; spinal tumor; and failed previous fusion (pseudo-arthrosis).

The ASTRA Spine System is also a sacral/iliac screw fixation system of the 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 (pseudo-arthrosis).

When used in a percutaneous, posterior approach with AVANT Spine MIS instrumentation, the ASTRA Spine System is intended for non-cervical pedicle fixation for the following indications: degenerative disc discogenic back pain with degeneration of the disc confirmed by history and radiographic studies), spondylolisthesis, trauma (i.e., fracture or dislocation), spinal stenosis, curvatures (i.e., scoliosis, and/or lordosis), tumor, pseudo-arthrosis, and failed previous fusion in skeletally mature patients . Levels of fixation are for the thoracic, lumbar and sacral spine.

When used for posterior non-cervical pedicle screw fixation in pediatric patients, the ASTRA Spine System implants are indicated as an adjunct to fusion to treat progressive spinal deformities (i.e., scoliosis, or lordosis) including idiopathic scoliosis, neuromuscular scoliosis, and congenital scoliosis. Additionally, the ASTRA Spine System is intended to treat pediatric patients diagnosed with the following conditions:

spondylolisthesis/spondylolysis, fracture caused by tumor and/or trauma, pseudarthrosis, and/or failed previous fusion. These devices are intended to be used with autograft. Pediatric pedicle screw fixation is limited to a posterior approach.

The subject ASTRA Spine System is top loading, multiple components, posterior system which consists of rods, cannulated and non-cannulated monoaxial, uniplanar and polyaxial screws, hooks, iliac connectors, rod connectors, and cross connectors. Most of the components are available in a variety of sizes to match the patient's anatomy more closely.

The subject ASTRA Spine System includes the pediatric use in the indications and other labeling updates to provide more clarity to the device insert.

The provided text is a 510(k) premarket notification for the ASTRA Spine System, which is a medical device. This type of submission relies on demonstrating substantial equivalence to a legally marketed predicate device, rather than proving safety and effectiveness through extensive clinical trials as typically done for new drug applications or certain high-risk medical devices.

Therefore, the document does not contain the information requested in your prompt regarding acceptance criteria, device performance studies, sample sizes, ground truth establishment, or multi-reader multi-case studies.

Here's why and what the document does describe:

• Acceptance Criteria & Reported Device Performance: This section is explicitly missing because the submission is not focused on proving the device meets specific performance criteria through new studies. Instead, it argues that the device's design, materials, and function are similar enough to existing, legally marketed predicate devices to be considered substantially equivalent.
• Sample size used for the test set and the data provenance: Not applicable. No new test set in this context.
• Number of experts used to establish the ground truth for the test set and qualifications of those experts: Not applicable. No new ground truth establishment study.
• Adjudication method for the test set: Not applicable.
• If a multi-reader multi-case (MRMC) comparative effectiveness study was done: No. The document explicitly states "No clinical studies were performed in support of this submission."
• If a standalone (i.e. algorithm only without human-in-the-loop performance) was done: Not applicable. This is a physical spinal implant system, not a software algorithm.
• The type of ground truth used: Not applicable.
• The sample size for the training set: Not applicable. No training set for an algorithm.
• How the ground truth for the training set was established: Not applicable.

What the document does state regarding testing:

• Non-clinical Test Summary: "Non-clinical tests were not performed in support of this submission." This means no new bench testing or material testing data was submitted for this particular 510(k). The assumption is that the materials and design are already established as safe and effective by the predicate devices they are referencing.
• Clinical Test Summary: "No clinical studies were performed in support of this submission." This further reinforces that no human studies were conducted for this specific submission to prove performance or safety.

In summary, for a 510(k) premarket notification like this one, the "proof" the device meets acceptance criteria is primarily based on its substantial equivalence to already cleared predicate devices, meaning it shares similar technological characteristics and indications for use, and does not raise different questions of safety and effectiveness.

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