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The ExcelsiusGPS is intended for use as an aid for precisely locating anatomical structures and for spatial positioning and orientation of an instrument holder or guide to be used by surgeons for navigating and/or guiding compatible surgical instruments in open or percutaneous provided that the required fiducial markers and rigid patient anatomy can be identified on CT scans or fluoroscopy. The system is indicated for the placement of spinal and orthopedic bone screws and interbody spacers, and intracranial devices including biopsy needles, electrodes, and tubes.

The ExcelsiusGPS® Cranial Module includes hardware and software that enables real time surgical navigation using radiological patient images (MRI, CT, and fluoroscopy), using a dynamic reference base and positioning camera. The navigation system determines the registration or mapping between the virtual patient (points on the patient images) and the physical patient (corresponding points on the patient's anatomy). Once this registration is created, the software displays the relative position of a tracked instrument on the patient images. As an aid to visualization, the surgeon can plan trajectories for instrument placement on the patient images prior to surgery. Registration provides the necessary information to provide visual assistance to the surgeon during freehand navigation. During surgery, the system tracks the position of GPS compatible instruments in or on the patient anatomy and continuously updates the instrument position on patient images utilizing optical tracking. System software is responsible for all navigation functions, data storage, network connectivity, user management, case management, and safety functions. ExcelsiusGPS® surgical instruments include non-sterile, re-usable instruments and sterile instruments that are operated manually or with the use of the positioning system.

The ExcelsiusGPS® Cranial Module is designed to assist with stereotactic procedures that include guidance to cranial targets for instrument navigation and device placement. Instruments consist of end effector instruments, registration instruments, navigated instruments, patient positioning instruments, and surgical instruments. End effector instruments include instruments to the Interchangeable Guide End Effector. Registration and navigated instruments incorporate unique array patterns with reflective markers, and are used to track patient anatomy and surgical instruments. Patient positioning instruments aid in patient fixation. Surgical instruments are used to access and prepare the local site and place devices, such as needles, electrodes, and tubes.

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

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