K Number
K173054
Manufacturer
Date Cleared
2018-01-16

(110 days)

Product Code
Regulation Number
892.2050
Reference & Predicate Devices
Predicate For
AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
Intended Use

The UC-Care Navigo Workstation is an adjunctive tool for ultrasound guided procedures and is intended to be used by physicians in the clinic or hospital for 2-D and 3-D visualization of ultrasound images of the prostate gland. The Navigo Workstation offers the ability to fuse DICOM originated information (e.g. MRI, CT) with the ultrasound images and thus superimposes information from one modality onto the other.

It also provides the ability to display a simulated image of a tracked insertion tool such as a needle, guide wire, catheter, grid plate or probe on a computer monitor screen that shows images of the target organ and the current and the projected future path of the interventional instrument taking into account patient movement. Additional software features include patient data management, multiplanar reconstruction, segmentation, image measurement and 3-D image registration, as well as storage and future retrieval of this information.

Navigo is intended for treatment planning and guidance for clinical, interventional and/or diagnostic procedures. The device is intended to be used in interventional and diagnostic procedures in a clinical setting. Example procedures include, but are not limited to image fusion for diagnostic clinical examinations and procedures, soft tissue biopsies, soft tissue ablations and placement of fiducial markers.

Device Description

The Navigo Workstation Version 2.0 is an adjunctive tool in the management of prostate diagnostic and interventional procedures. The Navigo Workstation Version 2.0 allows prostate needle tracking, recording, and management solution. The Navigo Workstation Version 2.0 is designed to assist the physician in performing prostate diagnostic and interventional procedures by providing regional orientation information, displaying a 3D model with real-time tracking and recording of the needle location. The Navigo Workstation Version 2.0 offers the ability to fuse DICOM originated information (e.g. MRI, CT) with the ultrasound images and thus superimposes information from one modality onto the other. The device includes means to compensate for patient body and prostate motion at any time during the procedure.

The Navigo Workstation Version 2.0 is designed to work with standard trans-rectal / transperineal ultrasound systems and biopsy setup without changing or interfering with the physician's existing workflow. The Navigo Workstation Version 2.0 connects to the video output of the ultrasound system and by tracking the ultrasound probe's position, the recorded 2D ultrasound images are transferred to the Navigo Workstation Version 2.0 for viewing and creation of a 3D model. As with any other procedure, the US probe is used together with a standard disposable cover sheath supplied by the user.

Two dimensional (2D) images and the 3D model of the prostate are displayed on the Navigo Workstation Version 2.0's screen. The Navigo Workstation Version 2.0 is equipped with tools to manipulate (rotate, pan, zoom) the model, and to archive and retrieve the information for further use.

The tracking and recording enables display of an accurate 3D model of the prostate and to record needle locations on the model. Pathology diagnosis results may be updated on the 3D model and a color display representation provides a visual display of the pathology results.

The Navigo Workstation Version 2.0 supports the display of ROIs on the 3D model and displays visual indication when the needle trajectory intersects with an ROI (Region Of Interest) is defined by the physician by segmenting a portion of the prostate on a 2D image and displaying its location on the 3D model, thereby defining a portion of the prostate as a target to direct a needle within. The 2D images for segmentation of the ROI can be either a frozen Ultrasound image or a DICOM compliant image from another imaging study completed prior to the Ultrasound procedure (e.g. MR,CT).The ROls are clearly numbered and labeled by a letter symbolizing its origin (Ultrasound or DICOM). On each image, more than one ROI may be defined (segmented).

The live 2D ultrasound image is superimposed in real-time with the 2D ROI boundaries thus allowing the physician to see the real-time advancement of the needle on the live ultrasound image with reference to ROI boundaries. The 3D model is displayed on a separate window alongside the ultrasound's live continuous images display, allowing prostate 3D orientation.

Regardless of the type of ultrasound probe used for the procedure (side-fire or end-fire) a cannula for a needle is built within the outer shell of the probe and therefore a needle can be inserted through the designated cannula. The designated cannula defines the needle path along its trajectory. The needle trajectory is displayed on the 3D model representing the potential needle route to allow the physician to direct the needle in real time into the target. When the projected path intersects with an ROI, the ROI will change indicating the needle can be directed inside the ROI if the physician ensures that the needle is inserted deep enough. In trans-perineal procedures the grid-plate sensor is placed on the grid base via a fixator; the sensor tracks the grid location during the procedure and enables the Navigo Workstation Version 2.0 to present in real time the optional trajectories locations. During the procedure, the physician may change some of the parameters on the US system or perform different actions that require the Navigo Workstation Version 2.0 to adjust. A physician may wish to freeze an image and perform measurements, label the image and save it to the report, switch between transversal and longitudinal view, or change the view of the ultrasound image. The Navigo Workstation Version 2.0 is equipped with image state algorithms to automatically detect the change in parameters and adjust itself to the new parameters. For example, if the physician freezes the US image, the Navigo Workstation Version 2.0 will automatically present additional menu option for a frozen image like measurements tools and labeling. The image state algorithm was developed to support generic ultrasound parameters and is specifically tested for each new ultrasound system model the Navigo Workstation Version 2.0 is required to support. In case of auto-detection failure, the user is informed and asked to confirm or manually change the detected parameters In order to continue.

In off-line mode, the Navigo Workstation Version 2.0 software further enables the physician to analyze previous procedures using the prostate model, update the 3D model if necessary. update the recorded biopsies' locations, generate reports, and provides a DICOM (MRI/CT) interface for ROI definition, 3D model display, and data communication.

AI/ML Overview

Here is an analysis of the acceptance criteria and supporting studies for the Navigo Workstation Version 2.0, based on the provided text:

1. Table of Acceptance Criteria & Reported Device Performance:

Acceptance Criteria / Performance MetricReported Device Performance
2D to 3D Correction (Manual Adjustment) AccuracyCorrected shift to within the required 3mm accuracy level.
CT Compatibility (Volume & Surface Gap Comparison for 3D Models based on MRI vs. CT)3D models generated from MRI data are equal to the equivalent 3D models created from the CT data within the acceptance criteria.
Navigo Fusion Accuracy (Trans-perineal Approach - Difference between actual and targeted needle location)All obtained results demonstrate a location error < 3mm.

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

  • 2D to 3D Correction: Not explicitly stated, refers to "a prostate phantom."
  • CT Compatibility: Not explicitly stated, refers to "prostate phantom." It specifies "Phantoms were scanned both on MRI and on CT." The number of phantoms is not explicitly stated.
  • Navigo Fusion Accuracy: Refers to "two phantoms each containing randomly located isoechoic lesions."
  • Data Provenance: The studies were conducted as bench testing using phantoms. This indicates the data is synthetic/simulated rather than from human patients. The country of origin of the data is not specified, but the device submitter is UC-Care Ltd. from Yokneam, Israel.

3. Number of Experts and Qualifications for Ground Truth of Test Set:

  • The document does not explicitly state the number or qualifications of experts used to establish ground truth for these bench tests. The ground truth for the bench tests appears to be defined by the physical properties of the phantoms and the accuracy of the imaging modalities (CT, MRI) used to verify measurements. For example, for "Navigo Fusion Accuracy," CT scans were performed "post procedure to visualize the inserted needles," which serves as the ground truth.

4. Adjudication Method for the Test Set:

  • The document does not mention any expert adjudication method (e.g., 2+1, 3+1). The "ground truth" for these bench tests was established through direct measurement on the phantoms and verification with imaging modalities like CT.

5. Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study:

  • No, a multi-reader multi-case (MRMC) comparative effectiveness study comparing human readers with and without AI assistance was not mentioned or presented in this document. The performance data focuses on the device's adherence to its specifications through bench testing.

6. Standalone (Algorithm Only) Performance Study:

  • Yes, the studies described are for the "Navigo Workstation Version 2.0" as a device. The "Performance Data" section details bench testing that evaluates the device's algorithms and functionalities (like 2D to 3D correction, CT compatibility, and fusion accuracy) in a standalone capacity within a controlled phantom environment. These tests assess the inherent accuracy and capabilities of the software in performing its intended functions.

7. Type of Ground Truth Used:

  • For the bench tests, the ground truth was established using phantom measurements and verification with high-resolution imaging modalities (e.g., CT scans to visualize actual needle placement, direct comparison of 3D models generated from MRI and CT data against each other or potentially against known phantom dimensions).

8. Sample Size for the Training Set:

  • The document does not provide information regarding the sample size used for any training set. As this device is primarily described as an "adjunctive tool" and "workstation" that performs image fusion, tracking, and visualization, it's possible its core functionalities rely on established image processing algorithms rather than a deep learning model requiring a distinct training dataset in the same way an AI diagnostic algorithm might. However, if any machine learning components were involved (e.g., for "optional automatic segmentation"), the training data details are not provided.

9. How Ground Truth for Training Set was Established:

  • Since information about a training set is not provided, the method for establishing its ground truth is also not described in this document.

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Image /page/0/Picture/0 description: The image contains the logo of the U.S. Food and Drug Administration (FDA). On the left is the Department of Health & Human Services logo. To the right of that is the FDA logo, which is a blue square with the letters "FDA" in white. To the right of the FDA logo is the text "U.S. FOOD & DRUG ADMINISTRATION" in blue.

January 16, 2018

UC-Care Ltd. % John Smith, M.D., J.D. Partner Hogan Lovells US LLP 555 13th Street NW WASHINGTON DC 20004

Re: K173054

Trade/Device Name: Navigo Workstation Version 2.0 Regulation Number: 21 CFR 892.2050 Regulation Name: Picture archiving and communications system Regulatory Class: II Product Code: LLZ Dated: December 19, 2017 Received: December 19, 2017

Dear Dr. Smith:

We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.

If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.

Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.

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Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.

For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/MedicalDevices/DeviceRegulationandGuidance/) and CDRH Learn (http://www.fda.gov/Training/CDRHLearn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (http://www.fda.gov/DICE) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).

Sincerely,

Michael D. O'Hara
For

Robert Ochs, Ph.D Director Division of Radiological Health Office of In Vitro Diagnostics and Radiological Health Center for Devices and Radiological Health

Enclosure

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DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration Indications for Use

510(k) Number (if known) K173054

Device Name

Navigo Workstation Version 2.0.

Indications for Use (Describe)

The UC-Care Navigo Workstation is an adjunctive tool for ultrasound guided procedures and is intended to be used by physicians in the clinic or hospital for 2-D and 3-D visualization of ultrasound images of the Navigo Workstation offers the ablity to fuse DICOM originated information (e.g. MRI, CT) with the ultrasound images and thus superimposes information from one modality onto the other. It also provides the ability to display a simulated insertion tool such as a needle, guide wire, catheter, grid plate or probe on a computer monitor screen that shows iman and the current and the projected future path of the interventional instrument. taking into account patient movement. Additional software include patient data management, multiplanar reconstruction, segmentation, image measurement and 3-D image registration, as well as storage and future retrieval of this information.

Navigo is intended for treatment planning and clinical, interventional and/or diagnostic procedures. The device is intended to be used in interventional and diagnostic procedures in a clinical setting. Example procedures include, but are not limited to image fusion for diagnostic clinical examinations and procedures, soft tissue ablations and placement of fiducial markers.

Type of Use (Select one or both, as applicable)

Prescription Use (Part 21 CFR 801 Subpart D)

Over-The-Counter Use (21 CFR 801 Subpart C)

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510(k) SUMMARY UC-Care Ltd.'s Navigo Workstation Version 2.0

Submitter

UC-Care Ltd. Apollo Bldg., New Industrial Zone P.O.Box 67 Yokneam 20692, Israel Phone: +972-4-909-7427 ext. 656 Facsimile: +972-4-993-7323 Contact Person: Hadas Sheynise

Date Prepared: 29 September 2017

Name of Device: Navigo Workstation Version 2.0

Common or Usual Name: Navigo Workstation Version 2.0

Classification Name: Picture archiving and communications system

Regulatory Class: Il

Regulation Number: 21 CFR 892.2050

Product Code: LLZ

Predicate Devices

UC-Care Ltd.'s Navigo Workstation K160934

InVivo Corporation's Uronav (Version 2.0) K153073

Device Description

The Navigo Workstation Version 2.0 is an adjunctive tool in the management of prostate diagnostic and interventional procedures. The Navigo Workstation Version 2.0 allows prostate needle tracking, recording, and management solution. The Navigo Workstation Version 2.0 is designed to assist the physician in performing prostate diagnostic and interventional procedures by providing regional orientation information, displaying a 3D model with real-time tracking and recording of the needle location. The Navigo Workstation Version 2.0 offers the ability to fuse DICOM originated information (e.g. MRI, CT) with the ultrasound images and thus superimposes information from one modality onto the . The

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device includes means to compensate for patient body and prostate motion at any time during the procedure.

The Navigo Workstation Version 2.0 is designed to work with standard trans-rectal / transperineal ultrasound systems and biopsy setup without changing or interfering with the physician's existing workflow. The Navigo Workstation Version 2.0 connects to the video output of the ultrasound system and by tracking the ultrasound probe's position, the recorded 2D ultrasound images are transferred to the Navigo Workstation Version 2.0 for viewing and creation of a 3D model. As with any other procedure, the US probe is used together with a standard disposable cover sheath supplied by the user.

Two dimensional (2D) images and the 3D model of the prostate are displayed on the Navigo Workstation Version 2.0's screen. The Navigo Workstation Version 2.0 is equipped with tools to manipulate (rotate, pan, zoom) the model, and to archive and retrieve the information for further use.

The tracking and recording enables display of an accurate 3D model of the prostate and to record needle locations on the model. Pathology diagnosis results may be updated on the 3D model and a color display representation provides a visual display of the pathology results.

The Navigo Workstation Version 2.0 supports the display of ROIs on the 3D model and displays visual indication when the needle trajectory intersects with an ROI (Region Of Interest) is defined by the physician by segmenting a portion of the prostate on a 2D image and displaying its location on the 3D model, thereby defining a portion of the prostate as a target to direct a needle within. The 2D images for segmentation of the ROI can be either a frozen Ultrasound image or a DICOM compliant image from another imaging study completed prior to the Ultrasound procedure (e.g. MR,CT).The ROls are clearly numbered and labeled by a letter symbolizing its origin (Ultrasound or DICOM). On each image, more than one ROI may be defined (segmented).

The live 2D ultrasound image is superimposed in real-time with the 2D ROI boundaries thus allowing the physician to see the real-time advancement of the needle on the live ultrasound image with reference to ROI boundaries. The 3D model is displayed on a separate window alongside the ultrasound's live continuous images display, allowing prostate 3D orientation.

Regardless of the type of ultrasound probe used for the procedure (side-fire or end-fire) a cannula for a needle is built within the outer shell of the probe and therefore a needle can be inserted through the designated cannula. The designated cannula defines the needle path along its trajectory. The needle trajectory is displayed on the 3D model representing the potential needle route to allow the physician to direct the needle in real time into the target. When the projected path intersects with an ROI, the ROI will change indicating the needle can be directed inside the ROI if the physician ensures that the needle is inserted deep enough. In trans-perineal procedures the grid-plate sensor is placed on the grid base via a fixator; the sensor tracks the grid location during the procedure and enables the Navigo Workstation Version 2.0 to present in real time the optional trajectories locations. During the procedure, the physician may change some of the parameters on the US system or perform

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different actions that require the Navigo Workstation Version 2.0 to adjust. A physician may wish to freeze an image and perform measurements, label the image and save it to the report, switch between transversal and longitudinal view, or change the view of the ultrasound image. The Navigo Workstation Version 2.0 is equipped with image state algorithms to automatically detect the change in parameters and adjust itself to the new parameters. For example, if the physician freezes the US image, the Navigo Workstation Version 2.0 will automatically present additional menu option for a frozen image like measurements tools and labeling. The image state algorithm was developed to support generic ultrasound parameters and is specifically tested for each new ultrasound system model the Navigo Workstation Version 2.0 is required to support. In case of auto-detection failure, the user is informed and asked to confirm or manually change the detected parameters In order to continue.

In off-line mode, the Navigo Workstation Version 2.0 software further enables the physician to analyze previous procedures using the prostate model, update the 3D model if necessary. update the recorded biopsies' locations, generate reports, and provides a DICOM (MRI/CT) interface for ROI definition, 3D model display, and data communication.

Intended Use / Indications for Use

The UC-Care Navigo Workstation is an adjunctive tool for ultrasound guided procedures and is intended to be used by physicians in the clinic or hospital for 2-D and 3-D visualization of ultrasound images of the prostate gland. The Navigo Workstation offers the ability to fuse DICOM originated information (e.g. MRI, CT) with the ultrasound images and thus superimposes information from one modality onto the other.

It also provides the ability to display a simulated image of a tracked insertion tool such as a needle, guide wire, catheter, grid plate or probe on a computer monitor screen that shows images of the target organ and the current and the projected future path of the interventional instrument taking into account patient movement. Additional software features include patient data management, multiplanar reconstruction, segmentation, image measurement and 3-D image registration, as well as storage and future retrieval of this information.

Navigo is intended for treatment planning and quidance for clinical, interventional and/or diagnostic procedures. The device is intended to be used in interventional and diagnostic procedures in a clinical setting. Example procedures include, but are not limited to image fusion for diagnostic clinical examinations and procedures, soft tissue biopsies, soft tissue ablations and placement of fiducial markers.

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Summary of Technological Characteristics

The subject NaviGo™ Workstation Version 2.0 and the primary predicate, the NaviGo™ Workstation have the same general intended use, namely visualization of the prostate during an ultrasound procedure. The indications for use language has been updated for consistency with the UroNav predicate.

The NaviGo Workstation Version 2.0 is substantially similar to cleared Navigo in terms of technological characteristics and principles of operation. Both devices have the same following technological characteristics::

  • To assist the physician by transfer and display of ultrasound images on the workstation screen
  • . To provide regional orientation information during prostate procedures
  • To build, display and manipulate a 3D model of the prostate on screen .
  • . To define the physician's ROIs (Regions Of Interest) and display them on the 3D model
  • . To archive procedure data and report generating
  • . To provide data management solutions
  • To track, display and record trajectories
  • . To display the scanning history, including pathology analyses
  • . To retrieve and display DICOM compliant information
  • . To fuse DICOM compliant originated regions of interest with the ultrasound 2D and 3D information

Several modifications have been made from the primary predicate device, including the following:

The physician can now upload MR and CT DICOM studies from PACS and also from the hospital intranet file server to the Navigo workstation. . No modification of the original source documents on the intranet server is possible. Also, with this change it is possible to backup data from the Navigo workstation to the hospital intranet file server.

Addition of optional automatic segmentation and as a result the removal of the illustration model option.

Real-time prostate model overlay on the live US image with the ability to perform manual adjustments.

Addition of a Fusion review option which allows the physician to inspect the fusion result and make manual adjustments if needed.

Display of the US image parameters with manual setting capability.

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The Navigo Workstation Version 2.0 includes a support to trans-perineal biopsy and an option for manual compensation procedure when it is not possible to use the reference sensor (e.g. Lithotomic position).

A table comparing the key features of the subject and predicate devices is provided below.

Navigo WorkstationVersion 2.0Navigo Workstation(K160934)Uronav (Version2.0) (K153073)
Indications for UseThe UC-Care NavigoWorkstation is anadjunctive tool forultrasound guidedprocedures and isintended to be used byphysicians in the clinicor hospital for 2-D and3-D visualization ofultrasound images ofthe prostate gland. TheNavigo Workstationoffers the ability to fuseDICOM originatedinformation (e.g. MRI,CT) with the ultrasoundimages and thussuperimposesinformation from onemodality onto the other.It also provides theability to display asimulated image of atracked insertion toolsuch as a needle, guidewire, catheter, grid plateor probe on a computermonitor screen thatshows images of thetarget organ and thecurrent and theprojected future path ofthe interventionalinstrument taking intoaccount patientmovement. Additionalsoftware featuresinclude patient dataThe UC-Care NavigoWorkstation is anadjunctive tool forultrasound guidedprocedures and isintended to be used byphysicians in theclinic or hospital for 2-D and 3-Dvisualization ofultrasound images ofthe prostate gland.The NavigoWorkstation offers theability to fuse DICOMoriginated information(e.g. MRI) with theultrasound imagesand thussuperimposeinformation from onemodality onto theother. Additionalsoftware featuresinclude patient datamanagement, multi-planar reconstruction,segmentation, imagemeasurement and 3-D image registration.The device isspecifically indicatedto provide informationon regionalorientation within theprostate to assistneedle targetedprocedures (e.g.UroNav is astereotaxic accessoryfor image-guidedinterventional anddiagnostic proceduresof the prostate gland.It provides 2D and 3Dvisualization ofUltrasound (US)images and the abilityto fuse and registerthese images withthose from otherimaging modalitiessuch as MagneticResonance (MR),ComputedTomography, etc.It also provides theability to display asimulated image of atracked insertion toolsuch as a biopsyneedle, guidewire,gridplate or probe ona computer monitorscreen that showsimages of the targetorgan and the currentand the projectedfuture path of theinterventionalinstrument taking intoaccount patientmovement. Othersoftware featuresinclude patient data
management,multiplanarreconstruction,segmentation, imagemeasurement and 3-Dimage registration, aswell as storage andfuture retrieval of thisinformationNavigo is intended fortreatment planning andguidance for clinical,interventional and/ordiagnostic procedures.The device is intendedto be used ininterventional anddiagnostic procedures ina clinical setting.Example proceduresinclude, but are notlimited to image fusionfor diagnostic clinicalexaminations andprocedures, soft tissuebiopsies, soft tissueablations and placementof fiducial markers.biopsy) regions ofinterest display,procedures planningand, reconstruction ofa 3D renderedsurface model of theprostate displayneedle locations thathave been selectedby the physician, aswell as storage andfuture retrieval of thisinformation.management, multi-planar reconstruction,segmentation, imagemeasurements and2D/3D imageregistration.UroNav is intendedfor treatment planningand guidance forclinical, interventionaland/or diagnosticprocedures.The device is intended tobe used ininterventional anddiagnostic proceduresin a clinical setting.Example proceduresinclude, but are notlimited to imagefusion for diagnosticclinical examinationsand procedures, softtissue biopsies, softtissue ablations andplacement of fiducialmarkers.
Product CodeLLZLLZLLZ
Device ClassificationSystem, ImageProcessing,RadiologicalSystem, ImageProcessing,RadiologicalSystem, ImageProcessing,Radiological
Target Anatomyprostateprostateprostate
Anatomical AccessTransrectal & Trans-perinealTransrectalTransrectal & Trans-perineal
Software
Windows O.S.YesYesYes
Medical Imaging SoftwareYesYesYes
Image Display
Multi-Modality SupportYesYesYes
General Image 2D/3DReviewYesYesYes
3D Rendering ViewYesYesYes
Live 2D UltrasoundYesYesYes
Image Processing
Gland SegmentationYesYesYes
Image RegistrationYesYesYes
Rigid RegistrationYesYesYes
Elastic RegistrationNoNoYes
Multi-Planar Reformatting(MPR)YesYesYes
Motion Compensation
Reference sensorYesYesNo
Connectivity
DICOMYesYesYes
Ultrasound videoYesYesYes
Review tools
Standard Image ViewingToolsYesYesYes
Measurement ToolsYesYesYes
Annotation ToolsYesYesYes
Segmentation ToolsYesYesYes
Reporting ToolsYesYesYes
Video CaptureYesYesYes
Image OverlaysYesYesYes
Planning & Navigation
Import Prior PlansYesYesYes
Import / Add TargetsYesYesYes
Plan / Mark LocationsYesYesYes
Navigation TypeElectromagneticElectromagneticElectromagnetic

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Performance Data

The performance characteristics of the Navigo Workstation Version 2.0 and its compliance with the applicable recognized standards were evaluated through the following testing:

  • Software verification and validation testing .
  • . Electrical safety testing
  • EMC testing

Bench Testing

The following bench studies were performed in order to demonstrate that the Navigo Workstation Version 2.0 meets its specifications and its updated indications for use:

  • 2D to 3D Correction (Manual adjustment): In order to validate that the correction defined by moving the model contour on the 2D image enables the user to correct the 3D model location in respect to the real time US image, the following testing was performed using a prostate phantom. A simulated shift was performed with the phantom, and the Navigo software was used to correct the shift. The location error of fusion ROIs in the model relative to their location in the US image were evaluated by measuring the distance between the US lesion center and ROI overlay center (i.e. location error). For all working scenarios (simple procedure, fusion and alignment with historic procedures), the manual adjustment enabled to overcome deviations in model location during procedure and return the model to the correct location within the required 3mm accuracy level.
  • . CT Compatibility: In order to validate that the Navigo Workstation Version 2.0 can read correctly the CT data to create a CT 3D model, testing was performed using prostate phantom. Phantoms were scanned both on MRI and on CT. For each phantom the DICOM CT series and MRI (T2) series were loaded in Navigo Fusion studio. Images from apex to base were selected and segmented. The 3D models generated by Navigo based on MRI and CT images were compared to evaluate volumes of the two models, the average gap between the surfaces (RMSE) and the maximum distance (local maximum). The results establish that the 3D models created from MRI data are equal to the equivalent 3D models created from the CT data within the acceptance criteria. Therefore, it can be concluded that the Navigo Workstation Version 2.0 is compatible with CT DICOM data.
  • . Navigo Fusion Accuracy testing – Trans-perineal Approach:_To validate the Navigo Workstation Version 2.0 MRI fusion accuracy when used with the trans-perineal approach, testing was performed using two phantoms each containing randomly located isoechoic lesions. MRI scanning of the phantom was performed and loaded into the Navigo fusion studio, contours of the prostate and the lesions were marked. Trans-perineal Ultrasound (BK Flex focus, 8848) scan was then performed using the Navigo Workstation Version 2.0. 3 biopsy needles were then targeted into each

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lesion by inserting the needle to the suggested trajectories. A 1 mm CT scan was performed post procedure to visualize the inserted needles within the isoechoic lesions. Accuracy was defined as the difference between the actual needle location as measured on CT and the targeted location as measured on the real time US images. All obtained results demonstrate that the accuracy of the MRI fusion performed by the Navigo Workstation Version 2.0 when used with the trans-perineal approach meets the requirements of a location error < 3mm.

Conclusions

The Navigo Workstation Version 2.0 is substantially equivalence to the Navigo Workstation (K160934) and the Uronav Version 2.0 (K153073). The Navigo Workstation Version 2.0 has the same intended uses and similar indications, technological characteristics, and principles of operation as its predicate devices. The minor differences in indications do not alter the intended use of the device and do not affect its safety and effectiveness when used as labeled. The use of CT as a source for DICOM information is covered by the indications for use of the Uronav Version 2.0, and does not affect the device's diagnostic effect. In addition, the minor technological differences between the Navigo Workstation Version 2.0 and its predicate devices raise no new or different questions of safety or effectiveness. Performance data demonstrate that the Navigo Workstation Version 2.0 is as safe and effective as the cleared Navigo Workstation and provides the same level of accuracy. Thus, the Navigo Workstation Version 2.0 is substantially equivalent.

§ 892.2050 Medical image management and processing system.

(a)
Identification. A medical image management and processing system is a device that provides one or more capabilities relating to the review and digital processing of medical images for the purposes of interpretation by a trained practitioner of disease detection, diagnosis, or patient management. The software components may provide advanced or complex image processing functions for image manipulation, enhancement, or quantification that are intended for use in the interpretation and analysis of medical images. Advanced image manipulation functions may include image segmentation, multimodality image registration, or 3D visualization. Complex quantitative functions may include semi-automated measurements or time-series measurements.(b)
Classification. Class II (special controls; voluntary standards—Digital Imaging and Communications in Medicine (DICOM) Std., Joint Photographic Experts Group (JPEG) Std., Society of Motion Picture and Television Engineers (SMPTE) Test Pattern).