Tracking System - Products

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Ndi Accessori Polaris

Sku: NDIAccessoriPolaris

Personalizza i tracker Polaris® Spectra® Vicra®


DESCRIZIONE
Personalizza i tracker Polaris® Spectra® and Polaris® Vicra® con accessori che espandono le possibilità  di applicazioni di misura.

TIPOLOGIA DI TOOLS POLARIS
To meet the requirements of unique applications, NDI offers three types of optical tracking technologies: passive, active, and active wireless. Passive and active wireless tools are tracked by either the Polaris Vicra® or the passive Polaris Spectra® systems, while passive, active wireless, and active tools are tracked by the hybrid Polaris Spectra®

NDI can help you determine the best technology for your application, while considering the following key points and differences of each tool.

Active and Passive Tools & MarkersPassive

  • Passive tools use spherical, retro-reflective markers that reflect infrared light emitted by the illuminators on the position sensor
  • Tools are wireless
  • Offers simple tool construction
  • Requires each tool have a unique marker geometry resulting in larger tool sizes
  • Passive spheres need to be replaced after single use
  • Difficult to clean passive spheres intra-operatively

Active

  • Active tools incorporate infrared-emitting markers that are activated by an electrical current
  • Tools are wired to the system
  • More complex to build than passive tools
  • Tools can be small since the same geometry can be used multiple times
  • Markers have limited life and are not replaceable
  • Markers can be cleaned easily
  • Can incorporate switches and visible LEDs
  • Tool Definition File can be programmed into tool

Active Wireless

  • Active wireless tools incorporate infrared-emitting markers that are activated by an electrical current
  • Tools are wireless
  • Markers can be cleaned easily
  • Tools can be powered by the device to which they are connected
  • Requires each tool have a unique marker geometry resulting in larger tool sizes
  • Using batteries can create challenges with sterilization and disposal
  • Requires extra hardware such as a micro-controller
  • The most complex to build
 

Rigid Bodies

4col_4marker_rigid*development grade device

Active 4-Marker Planar Rigid Body

  • Four active markers mounted on a planar rigid body
  • 65 mm x 65 mm
  • Two elongated holes for mounting
Rigid Body 1 Rigid Body 2 Rigid Body 3

Rigid Body Polaris Vicra only

  • Single-faced rigid body with minimum marker spacing of 30 mm
  • This rigid body is for the Polaris Vicra only
  • Note: This tool geometry is too small for tracking with Polaris or Polaris Spectra

            Rigid Body 2

  • Single-faced rigid body with minimum marker spacing of 50 mm
  • This rigid body can be used with all Polaris systems

            Rigid Body 3

  • Single-faced rigid body with minimum marker spacing of 50 mm (unique from Rigid Body 2)
  • This rigid body can be used with all Polaris systems
 

Position Sensor

 The Position Sensor emits IR light for passive tracking and also detects active marker positions and calculates transformations of tools and 3D positions of individual markers. The Position Sensor also has indicator LEDs that provide power, status, and error information. The Polaris Spectra® Position Sensor can also contain an optional positioning laser.

 

4-Marker Probes

4col_4marker_planer  4col_4marker_probe

Active Probe

  • Four active markers mounted on a planar rigid body with an attached probe
  • Probe length – 105 mm

Passive Probe

  • The probe is a tool designed to investigate cavities and narrow passages
  • This probe can be used with all Polaris systems
 
 

Strober

Tool StroberThe strober is an optional accessory that allows you to connect up to three additional active tools and one GPIO device. Its portability enables tools to be connected close to the work area. A second strober can be daisy-chained to the first to add additional ports. The strober incorporates indicator LEDs to show power, status, and error information. *For use with hybrid spectra

 

SCU

The Polaris® System Control Unit (SCU) is used with the hybrid Polaris Spectra®. It provides the interface between the Position Sensor, strobers and tools, and the host computer. Three active tools can simultaneously be directly connected to the SCU. The SCU also incorporates a GPIO port for connecting other devices, such as a foot switch as well as an expansion port for connecting strobers through which additional active tools and/or GPIO devices may be connected. The SCU incorporates indicator LEDs to show power, status and error information.

 

Radix Lens

4col_radixOptical tracking is now being used in environments that require markers to be much more robust to liquid and tissue contamination. They also need to be easily cleaned so tracking can quickly be recovered. The NDI Radixâ„¢ Lens has been designed to respond to these demands. Designed for use with the Polaris® and the Polaris® Spectra Systems, the Radix Lens has a smooth plastic surface that naturally sheds liquid and is easy to wipe clean to recover tracking. The Radix Lens also has the unique characteristic of being inherently resistant to partial occlusions, further enhancing its robust performance characteristics. Features of the NDI Radix Lens include:

  • Facilitates accurate optical tracking in harsh environments
  • Solid contamination is easy to identify and remove resulting in more efficient tracking recovery
  • Partial occlusions have minimal impact on tracking performance
  • Minimizes interruption to surgical workflow
  • Low profile marker eliminates marker-to-marker interference on planar, multi-marker tools
  • Radix Lens Data Sheet

NDI Radix Lens Tool Integration Diagram

Partial Occlusions

The Radix Lens has the unique characteristic of being inherently resistant to partial occlusions. For passive spheres, partial occlusions generally cause a tool to stop tracking. A partial occlusion covering one side of a Radix Lens will be reflected on the opposite side. Due to this symmetrical occlusion, there is little effect on the marker centroid and therefore tracking loss is less likely.

Off-Angle Viewing

The Radix Lens has a maximum marker angle of +/- 70°.

Tool Integration

In contrast to the NDI passive sphere, the Radix Lens is not used directly in the form that it is supplied. The Radix Lens must first be incorporated into a tool or mounting base so that it may be attached to a passive tool.  

 

AAK

aakbar-smNDI™s Accuracy Assessment Kit (AAK) will help users determine if the Polaris Spectra or Polaris Vicra Position Sensor should be returned to NDI for re-characterization. This kit can be used in the field and the procedure takes less than 15 minutes.