What is RoSS™?

  • RoSS™ is a portable, stand-alone Robotic Surgery Simulator that teaches novice surgeons the motor and cognitive skills required for operating the da Vinci© surgical robot.
  • The RoSS™ uses virtual reality to introduce the user to the fundamentals of robot-assisted surgery. It boasts a multi-level curriculum, designed with various levels of difficulty, that takes the user through and teaches the required skills for effectively advancing robotic surgery abilities.
  • RoSS™ is the only robotic surgery simulator featuring full-length surgical procedures in 3D, otherwise known as HoST.
  • RoSS™ is portable, so novice surgeons are able to practice and train without using valuable OR space and time.

New in RoSS II™

The portable, stand-alone RoSS II™ console is a sleek redesign of the original RoSS™ that boasts improved graphics, enhanced visualization, smaller size, and decreased weight.

  • NEW Improved Graphics
  • NEW Improved Physics in Skills Modules
  • NEW Superior Arm Motion and Interaction
  • NEW Robotic Skills Assessment (RSA) Score

Features & Benefits

  • Portable, stand-alone console can be setup anywhere.
  • Integrated management system stores metrics for all users and tasks performed.
  • HoST (Hands-on Surgical Training) modules use actual surgical cases for unparalleled realism.
  • Adjustability and usability customizable to each user.
  • Proven track record of mechanical and electrical reliability.
  • Ergonomically adjustable to each user.

Virtual Reality Based Training

The RoSS II™ simulator addresses the rapidly growing need for a realistic training environment for robot-assisted surgery by:

  • Offering 16 modules with progressive difficulty from pinching, camera and clutch operation to tissue cutting and cautery
  • Developing motor and cognitive skills for performing robot-assisted surgery
  • Providing in-vivo virtual operative steps with three levels of complexity
  • Storing performance metrics for all users in a comprehensive database for export to Excel

RSA Score - Robotic Skills Assessment Score

Using the Fundamental Skills of Robotic Surgery (FSRS) available on the RoSS, a standardized scoring system was created for virtual reality based assessment metrics. This Robotic Skills Assessment (RSA) Score allows trainers to quickly and accurately assess trainee performance. The RSA Score is obtained by taking a timed test comprised of four modules that are part of the RoSS curriculum. It is a weighted average of the following composite metrics: safety in operative field, critical error, economy, bimanual dexterity, and time. The following table shows the score range, mean score and weight of each composite metric.

RSA-Score, weighted composite metric schematic

Composite metrics Score range Mean score Weight
TT 1-5 3.5 0.1(10%)
SOF 1-5 3.5 0.35(35%)
EC 1-5 3.5 0.1(10%)
BD 1-5 3.5 0.1(10%)
ER 1-5 3.5 0.35(35%)
Overall Score (S)* 1-5 3.5 1.0(100%)
Legend  
Score ranges

Retake(<2.0), poor (2.0-2.5), average (2.5-3.0), good (3.0-3.5), expert (3.5-4.0), superior (>4.0)

Metrics Key

BD = bimanual dexterity; EC = economy; ER = critical errors; SOF = safety in operative field; TT = task time

*Overall Score (S) = (0.1 x TT) + (0.35 x SOF) + (0.1 x EC) + (0.1 x BD) + (0.35 x ER)

4th Arm Control

Ball Placement

Needle Removal

Knot Tying

Available Tasks

Orientation  
Instrument Control This task teaches the trainee how to move the arms and helps orient the user to the feel of the RoSS™ console.
Camera Control This task teaches the trainee how to use the camera.
Coordinated Tool Control This task teaches the trainee how to use the camera and the clutch together in a coordinated manner.
4th Arm Control This task teaches the trainee how to use the 4th arm.
Motor Skills  
Ball Drop This task helps the trainee develop precise control of their instruments by picking up balls and placing them on trays.
Ball Placement This task helps the trainee develop accurate and precise control of their instruments by picking up balls and placing them atop columns.
Spatial Control I In this task, the trainee must pass a ring along a curved wire to hone their spatial awareness, instrument control, and fine motor skills.
Spatial Control II In this task, the trainee must pass a thread through a series of rings to hone their spatial awareness, instrument control, and fine motor skills.
Basic Surgical Skills  
Needle Handling and Exchange This task teaches the trainee how to handle a needle properly.
Needle Removal This task teaches the trainee how to properly hand off a needle to a bedside assistant.
Basic Electrocautery This task teaches the trainee how to use the electrocautery hook.
Tissue Cutting This task teaches the trainee how to use the scissors to cut tissue.
Intermediate Surgical Skills  
Tissue Retraction This task combines the trainee's previously acquired skills and requires coordinated control of the 4th arm to retract tissue.
Blunt Tissue Dissection This task combines the trainee's previously acquired skills and requires coordinated control of their instruments and the camera to separate two layers of tissue.
Vessel Dissection This task combines the trainee's previously acquired skills and requires coordinated control of their instruments and the camera to dissect the vessel.
Knot Tying This task combines the trainee's previously acquired skills and requires coordinated control of their instruments to effectively tie common surgical knots.
Ready for simulation?
Contact Simulated Surgical Systems, LLC for more information