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The Intuitive Surgical® Stereo View Endoscopic System is intended for endoscopic viewing of internal surgery sites during minimally invasive surgery in the peritoneal cavity, thoracic cavity, and peritoneum. It is designed for use with the Intuitive Surgical® Endoscopic Instrument Control system during laparoscopic and thoracoscopic surgical procedures.

This Special 510(k) is being submitted to include an additional 8.5mm sized 3D Stereo Endoscope as an additional accessory model to the currently cleared 12mm 3D Stereo Endoscope. Both endoscopic models are for use with the Intuitive Surgical® Stereo View Endoscopic System and Intuitive Surgical da Vinci® and da VinciS™ Surgical Systems.

The 8.5mm 3D Stereo Endoscope was developed to provide an option for use of a smaller patient access port than the currently cleared 12mm 3D Stereo Endoscope, while maintaining stereo view capabilities.

There are no changes in the basic design, technology, materials or manufacturing processes for the 8.5mm Endoscope. The intended use for the subject device in conjunction with the Intuitive Surgical® Stereo View Endoscopic System (i.e., cameras, illumination sources, video processing equipment) is identical to the previously cleared intended use for the 12mm Endoscope in conjunction with the Intuitive Surgical® Stereo View Endoscopic System.

The provided 510(k) summary (K080155) describes the clearance of an 8.5mm 3D Stereo Endoscope as an additional accessory model to an already cleared 12mm 3D Stereo Endoscope. This submission is a Special 510(k), which is typically used for modifications to a cleared device that do not significantly alter its fundamental scientific technology or intended use. Consequently, the performance testing focuses on demonstrating substantial equivalence to the predicate device, rather than establishing entirely new performance criteria.

Here's an analysis based on the provided document:

1. Table of Acceptance Criteria and Reported Device Performance

The document explicitly states: "The basic design and function of the subject 8.5mm Endoscope in conjunction with the Intuitive Surgical® Stereo View Endoscopic System is identical to the predicate system, except that an 8.5mm Endoscope is an available option to the 12mm Endoscope currently cleared."

"There are no changes in the basic design, technology, materials or manufacturing processes for the 8.5mm Endoscope."

"The technological characteristics of the subject device are identical to the predicate device." |
| Meeting design input requirements | "Design analysis and comparison, as well as bench testing, have been conducted...that design output meets the design input requirements." (Specific design input requirements are not detailed in this summary.) |
| Reduced diameter and shorter length impact on performance | The document states "The reduced diameter shaft of the endoscope is also shorter in length, but there are no changes in the compatibility of the 8.5mm Endoscope with the cameras, illumination sources or other components of the video processing system." This implies that the reduction in size did not adversely affect compatibility or functional performance. |

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

• Test Set Sample Size: The document does not specify a numerical sample size for the test set used in "bench testing" and "design analysis and comparison." Given the nature of a Special 510(k) for an accessory with similar technology, the testing likely involved a limited number of units to verify manufacturing consistency and functional equivalence.
• Data Provenance: Not explicitly stated. However, "bench testing" typically occurs in a lab setting, and "design analysis" is internal. This is not a clinical study, so patient data provenance is not applicable. The testing would be prospective in nature, referring to new tests conducted specifically for this submission.

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

• Number of Experts: Not applicable. For this type of submission (modification to a device, demonstrating substantial equivalence through bench testing), expert consensus on a "ground truth" for a test set, as might be seen in AI/diagnostic device submissions, is not described. The evaluation relies on engineering and functional equivalence.
• Qualifications of Experts: Not applicable.

4. Adjudication Method for the Test Set

• Adjudication Method: Not applicable. Since this is not a diagnostic device involving human interpretation of results against a gold standard, an adjudication method for a test set is not relevant.

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

• MRMC Study: No. This is not an AI-assisted diagnostic device, nor is it a comparative effectiveness study involving human readers. It is a hardware component (endoscope) that is part of a larger surgical system.

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

• Standalone Performance: Not applicable. The device is an endoscope, a sensing and imaging component, not an algorithm. Its performance is intrinsically linked to its use by a human operator within the surgical system.

7. The Type of Ground Truth Used (expert consensus, pathology, outcomes data, etc.)

• Type of Ground Truth: For the "bench testing" and "design analysis," the "ground truth" would be the design specifications and functional performance characteristics of the predicate 12mm 3D Stereo Endoscope. The testing aimed to show that the new 8.5mm endoscope met these established performance criteria or demonstrated equivalence across relevant parameters. This is an engineering/performance-based "ground truth."

8. The Sample Size for the Training Set

• Training Set Sample Size: Not applicable. This device is a hardware component. It does not employ machine learning or AI algorithms that would require a "training set" of data.

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

• Ground Truth for Training Set Establishment: Not applicable, as there is no training set for this device.

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