Software for use in image guided surgery; computer software for integrating views of a patient with the tracked position of tools or instruments for use in computer assisted surgery; computer software for integrating representations of application tools and instruments with images of patients obtained by imaging modalities including computed tomography, magnetic resonant imaging, computer hardware for medical use; computer hardware; surgery planning software; surgery planning software for use in image guided surgery; tool identification software used for use in image guided surgery; navigation software for image guided surgery; computer workstations comprising computer hardware and software for image guided surgery, spatial position sensors, tool interface units for tracking tools, universal handles, monitors and cart; and application tools and instruments and component parts therefor for tracking surgical instrument location used for image guided surgery; tool offset calibrators; magnetic tool offset calibrators; distortion measurement devices for measuring distortions in a generated electromagnetic field; foot switches, namely, a computer input device triggered by a foot; computer input devices

Medical devices, namely, registration and automatic registration devices for image guided surgery; tracking devices for medical devices to track the position and/or orientation of medical devices during image guided surgery; telemetry devices for medical applications; surgical instruments and apparatus, namely, needles, tracked needles, stylettes, tracked stylettes, stylette pairs, cannula pairs, tracked cannula pairs, needle device introducers, tracked needle device introducers, needle introducers, tracked needle introducers, biopsy needle guns, tracked biopsy needle guns, aspiration needles, tracked aspiration needles, trackers for use in image guided surgery, cannulas, tracked cannulas; medical ultrasound equipment, namely, laparoscope ultrasound trackers, tracked laparoscope ultrasound, tracked ultrasound transducers, positioning aids for use in ultrasound imagery, transcutaneous ultrasound trackers, endorectal ultrasound trackers, ultrasound tracker calibrators; tracker and integrated calibrator therefor; medical instrument adaptors; medical probes, namely, reusable probes, tracked reusable probes; image guided surgery equipment, namely, universal adaptor for medical devices, disposable dynamic reference patches, skin patches for referencing, locatable guides, tracked locatable guides, reusable dynamic reference frames, tracked positioning aids, tracked steerable locatable guides, precision spatial measurement devices, tracked medical instrument adaptors; image guided surgery systems, sold as a unit, namely, hardware and software and application tools and instruments and component parts therefor for tracking surgical instrument location; computer assisted surgery systems, sold as a unit, consisting primarily of computer hardware and software for image guided surgery, spatial position sensors, tool interface units for tracking tools, universal handles, monitors and cart; computer assisted image guided surgery systems, comprised of computer hardware and software for image guided surgery, spatial position sensors, tool interface units for tracking tools, universal handles, monitors and cart, and, application tools and instruments and component parts therefor for tracking surgical instrument location for medical use; computer assisted image guided surgery apparatus for using pre-operative and intra-operative images; computer assisted guided surgery system consisting of computer hardware and software for image guided surgery, spatial position sensors, tool interface units for tracking tools, universal handles, monitors and cart, and application tools and instruments and component parts therefor for tracking surgical instrument location, sold as a unit, for providing 3-dimensional visualization and navigation of instruments; surgical apparatus sold as a unit, namely, computer assisted surgery system consisting of computer hardware and software for image guided surgery, spatial position sensors, tool interface units for tracking tools, universal handles, monitors and cart, and, application tools and instruments and component parts therefor for tracking surgical instrument location, sold as a unit, for providing 3-dimensional visualization and navigation instruments; surgical apparatus sold as a unit, namely, image guided surgery system consisting of computer hardware and software for image guided surgery, spatial position sensors, tool interface units for tracking tools, universal handles, monitors and cart, and, application tools and instruments and component parts therefor for tracking surgical instrument location; surgical apparatus sold as a unit, namely, mobile system cart for use in image guided surgery, all being computer systems for medical use; surgical apparatus sold as a unit, namely, mobile system cart having electro-magnetic field generator, computer workstation and instrument connection unit, all being computer systems for medical use; surgical apparatus sold as a unit, namely, image guided surgery cart having electromagnetic field generator, computer work station and connections for medical instruments and devices; surgical apparatus, namely, image guided surgical workstation; metrological instruments and equipment for image guided surgery to measure spatial location, orientation of surgical instruments or patient tissue

Retail store services, mail order services, on-line retail store services featuring precision spatial measurement devices, metrological instruments, metrological equipment, metrological devices, image guided surgery systems, computer assisted surgery systems, computer software and hardware for image guided surgery systems, computer hardware and software for computer assisted surgery systems, medical instruments and apparatuses, and medical devices

Repair and installation services for computer assisted surgery systems and tools; repair and installation services for image guided surgery systems and tools; maintenance of computer assisted surgery systems and tools; maintenance of image guided surgery systems and tools