7D Surgical System Cranial Biopsy and Ventricular Catheter Placement Application

The 7D Surgical System Cranial Biopsy and Ventricular Catheter Placement Application is designed as a neurosurgical aid, providing stereotaxic image guidance for enhanced accuracy in cranial procedures such as biopsies and ventricular catheter placement. It achieves this through a combination of structured light imaging for intraoperative surface registration and optical tracking of surgical instruments relative to patient anatomy.

The 7D Surgical System Cranial Biopsy and Ventricular Catheter Placement Application is a stereotaxic image guidance system designed for precise spatial positioning and orientation of neurosurgical instruments during cranial procedures. It also serves as the primary surgical luminaire. The system utilizes machine vision and structured light imaging to capture intraoperative 3D anatomical data, which is registered with preoperative DICOM images. This enables real-time navigation of optically tracked instruments, including a specialized Biopsy Guide compatible with the IZI Navigable Brain Biopsy Cannula, employing passive-marker technology and an articulating arm for accurate instrument placement for procedures like biopsies and ventricular catheter insertions. Non-clinical testing, including surgical simulations on phantom models, was conducted to verify the system's performance and safety. The system demonstrated a mean Target Registration Error (TRE) of 1.36 mm and a mean Trajectory Angle Error (ATE) of 1.35 degrees, indicating high accuracy. Extensive verification and validation activities confirmed that the device meets its design specifications, usability requirements, and risk control measures. The system also adheres to standards for biocompatibility, sterilization, and electrical safety (IEC 60601 series, IEC 60825-1). Clinical trials were not deemed necessary due to the established nature of its underlying technology and equivalence to predicate devices for the stated indications for use.

AI Regulatory Concerns

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• Q1. How does the performance of the structured light imaging and registration process vary with different cranial surface characteristics or in the presence of surgical field contaminants like blood or irrigation?; What is the documented learning curve for surgeons to achieve optimal proficiency with the 7D Surgical System for cranial biopsies and ventricular catheter placements compared to other navigation systems?; Are there specific types of cranial pathologies or anatomical variations where the system's Target Registration Error (TRE) and Angular Trajectory Error (ATE) might deviate significantly from the reported phantom model results?; How does the system's integrated surgical luminaire function interact with or potentially affect the optical tracking accuracy, especially under varying ambient light conditions in the operating room?; What are the detailed failure modes and recovery mechanisms for the passive-marker tracking system, particularly concerning marker occlusion or misidentification during a procedure?