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SpaceOAR Vue Hydrogel is intended to temporarily position the anterior rectal wall away from the prostate during radiotherapy for prostate cancer and in creating this space it is the intent of SpaceOAR Vue Hydrogel to reduce the radiation dose delivered to the anterior rectum. The SpaceOAR Vue Hydrogel is composed of biodegradable material and maintain space for the entire course of prostate radiotherapy treatment and is completely absorbed by the patient's body over time.

The SpaceOAR Vue Hydrogel consists of components for the preparation of a synthetic, absorbable hydrogel spacer and a delivery mechanism provided in a sterile, single use package. The SpaceOAR Vue Hydrogel is a synthetic, absorbable polyethylene glycol (PEG)-based hydrogel that upon injection creates a space that temporarily positions the anterior rectal wall away from the prostate during radiotherapy for prostate cancer and in creating this space it is the intent of the perirectal spacer to reduce the radiation dose delivered to the anterior rectum. SpaceOAR Vue Hydrogel is completely synthetic with no animal or human derived components. It is composed of biodegradable material and maintains space for the entire course of prostate radiotherapy treatment (approximately 3 months) and is completely absorbed by the patient's body over time (about 6 months).

The SpaceOAR Vue Hydrogel consists of two syringes containing the PEG Precursor solution and the Accelerator solution (a buffered salt solution). The Precursor solution is formed by the user through the reconstitution of PEG powder with a Diluent (Trilysine buffer) solution (that is provided in a third syringe). The Accelerator solution is provided ready for use. The Syringes filled with the Precursor solution and the Accelerator solution are assembled with other applicator components, including a Y-connector for mixing the Precursor and Accelerator, and a needle to facilitate delivery of the hydrogel by injection to the tissue located between the anterior rectal wall and the prostate.

The provided document does not contain acceptance criteria for device performance or a study that specifically proves the device meets such criteria in terms of clinical outcomes or reader performance.

The document is a 510(k) summary for the SpaceOAR Vue Hydrogel. It focuses on demonstrating substantial equivalence to a legally marketed predicate device (SpaceOAR® Hydrogel System) rather than presenting a de novo clinical study with specific performance metrics for the new device.

Here's what can be extracted based on the provided text, addressing your questions where possible:

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

No explicit table of acceptance criteria with numerical performance targets (e.g., sensitivity, specificity, accuracy) for clinical effectiveness is provided in the document. The performance data section lists types of testing performed, but not the specific acceptance criteria or results for each beyond stating that "The subject device has met the same device specifications as the predicate device."

2. Sample size used for the test set and the data provenance

The document does not detail a "test set" in the context of clinical performance or image interpretation. The testing mentioned in Section VII ("PERFORMANCE DATA") appears to be primarily related to engineering, material science, and safety testing of the device itself (e.g., sterilization, gel properties, usability, biocompatibility, preclinical testing). Therefore, information on sample size for a test set (e.g., patient cases) or data provenance (country of origin, retrospective/prospective) is not available.

3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts

This information is not provided as the submission focuses on substantial equivalence based on technical characteristics and predicate device performance, not a new clinical study assessing image interpretation or a specific disease outcome requiring expert ground truth establishment.

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

Not applicable, as no clinical test set requiring adjudication by experts is described.

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

No MRMC study is mentioned. This device is a hydrogel spacer, not an AI-powered diagnostic tool, so the concept of human readers improving with AI assistance is not relevant to this submission.

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

This question is not applicable. The device is a physical hydrogel spacer used in conjunction with radiotherapy, not a standalone algorithm.

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

The document does not describe a clinical study that would require "ground truth" in the sense of comparing device output to a definitive diagnosis. The device's primary function is to physically create space and reduce radiation dose, which would be evaluated through physical properties and radiation dosimetry, not diagnostic accuracy.

8. The sample size for the training set

The document does not describe a training set. This is not an AI/machine learning device.

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

Not applicable, as there is no training set for an AI/machine learning algorithm.

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SpaceOAR Hydrogel System is intended to temporarily position the anterior rectal wall away from the prostate during radiotherapy for prostate cancer and in creating this space it is the intent of SpaceOAR Hydrogel System to reduce the radiation dose delivered to the anterior rectum. The SpaceOAR Hydrogel System is composed of biodegradable material and maintains space for the entire course of prostate radiotherapy treatment and is completely absorbed by the patient's body over time.

The SpaceOAR® Hydrogel System consists of components for the preparation of a synthetic, absorbable hydrogel spacer and a delivery mechanism provided in a sterile, single use package. The SpaceOAR® hydrogel is a synthetic, absorbable polyethylene glycol (PEG)-base hydrogel that upon injection creates a space that temporarily positions the anterior rectal wall away from the prostate during radiotherapy for prostate cancer and in creating this space it is the intent of the perirectal spacer to reduce the radiation dose delivered to the anterior rectum. SpaceOAR® hydrogel is completely synthetic with no animal or human derived components. It is composed of biodegradable material and maintains space for the entire course of prostate radiotherapy treatment (approximately 3 months) and is completely absorbed by the patient's body over time (about 6 months).

The SpaceOAR® Hydrogel System consists of two syringes containing the PEG Precursor solution and the Accelerator solution (a buffered salt solution). The Precursor solution is formed by the user through the reconstitution of PEG powder with a Diluent (Trilysine buffer) solution (that is provided in a third syringe. The Accelerator solution is provided ready for use. The Syringes filled with the Precursor solution and the Accelerator solution are assembled with other applicator components, including a Yconnector for mixing the Precursor and Accelerator, and a needle to facilitate delivery of the hydrogel by injection to the tissue located between the anterior rectal wall and the prostate.

This document is an FDA 510(k) summary for the SpaceOAR Hydrogel System. It is primarily focused on demonstrating substantial equivalence to a previously cleared predicate device, rather than providing detailed acceptance criteria and study results for a new device's performance.

Therefore, many of the requested items (e.g., sample size for test set, number of experts for ground truth, MRMC study, training set details) are not present in this type of FDA submission. The submission relies on the established performance of the predicate device.

Here's an analysis based on the provided text:

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

The document states: "The subject SpaceOAR® Hydrogel System met all acceptance criteria for verification and validation." However, it does not list specific quantitative acceptance criteria or their corresponding performance results in a table format. It only lists categories of tests performed.

2. Sample size used for the test set and the data provenance

The document does not specify a sample size for a "test set" or provide data provenance in the context of clinical performance for the subject device. The submission relies on equivalence to a predicate device. The performance data listed (sterilization, modulus, etc.) are engineering/laboratory tests.

3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts

This information is not provided as the submission does not detail a clinical study with a "test set" requiring expert ground truth in the traditional sense of diagnostic AI or imaging device evaluation.

4. Adjudication method for the test set

This information is not provided 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

An MRMC comparative effectiveness study was not mentioned or provided in this 510(k) summary. This type of study is typically for diagnostic imaging devices and AI systems, not for a physical implantable device like a hydrogel spacer.

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

This concept is not applicable to the SpaceOAR Hydrogel System, which is a physical medical device and not an algorithm.

7. The type of ground truth used

For the engineering/laboratory tests listed (Sterilization Validation, Modulus Testing, etc.), the "ground truth" would be established by pre-defined engineering specifications and validated test methods. The submission implies that the results of these tests (e.g., sterilization effectiveness, material properties like modulus, gel volume, gel time, pot life, endotoxin levels) adhered to these specifications.

8. The sample size for the training set

This information is not applicable/not provided as this is a physical device, not an algorithm that requires a training set.

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

This information is not applicable/not provided as this is a physical device.

Summary of Device Performance (based on this 510(k) summary):

The 510(k) application for the SpaceOAR Hydrogel System (K181465) demonstrates substantial equivalence to its predicate device (cleared under DEN140030). The core argument is that the subject device has identical design, materials, and sterilization cycle to the predicate device.

To support this claim, the manufacturer performed several verification and validation tests:

• Sterilization Validation: Confirmed the device's sterility.
• Modulus Testing: Evaluated the material's stiffness/elasticity.
• Gel Volume (Swell) Testing: Assessed how much the hydrogel swells.
• Gel Time Testing: Measured the time it takes for the components to form a gel.
• Pot Life Testing: Determined how long the mixed components remain viable for use.
• Endotoxin Testing: Ensured the absence of harmful bacterial endotoxins.

The document explicitly states: "The subject device is identical to the predicate device in design, materials and sterilization cycle; therefore, biocompatibility testing, shelf life testing, and clinical data were not required to support a determination of substantial equivalence." This means that the clinical performance and safety of the device are inferred from the predicate device, and the current submission focuses on verifying the manufacturing and design equivalence of the new device to the existing one. The "acceptance criteria" here largely pertain to meeting the engineering specifications and demonstrating manufacturing consistency with the already-cleared device.

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The provided text is a 510(k) clearance letter from the FDA for a device called "TraceIT Tissue Marker." This document does not contain information about acceptance criteria, device performance studies, sample sizes, ground truth establishment, or multi-reader multi-case studies. It is a regulatory approval letter based on substantial equivalence to predicate devices, not a detailed study report.

Therefore, I cannot extract the requested information from the provided text. The sections of the prompt asking for specifics about acceptance criteria, study details, sample sizes, expert qualifications, and ground truth are not addressed in this type of FDA letter.

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