Complete training guide: from bottle preparation to AI-powered assessment
Make sure you have all the equipment from our Setup Guide. You'll need your TD Box, electrosurgical generator, snare, gastroscope, and video capture chain connected.
The Dopper bottle is modified to create a suction chamber that connects to your endoscopy unit's standard suction system.
Cut the Dopper bottle at the marked line to create an open chamber for suction
Attach standard endoscopy suction tubing to the cut bottle opening
Connect the other end to your endoscopy unit's standard suction system
Instructional Video
Coming soon — bottle construction demonstration
Place a single piece of cooked ham in the TD Box, sitting on the electrosurgical return plate. The return plate must make good contact with the ham for the electrosurgical circuit to work.
Apply wet gauze around the ham. A dry ham conducts electricity poorly and will affect your results. Re-moisten between shapes if needed.
Soak the 3D-printed stencil face-down in the blue ink pad until fully covered. Then press it firmly and evenly onto the ham surface. Apply even pressure for full ink transfer.
The stencil contains 5 shapes of increasing complexity:
S0 is for practice only and is not scored. S1–S4 are used for assessment.
Exact effect and wattage settings are being confirmed and will be updated here. These settings apply to any brand of generator (Erbe, BOWA, Valleylab).
Using the snare tip, deliver soft coagulation hits sequentially along the stencil line. This is the fundamental technique being assessed — precise tip control while applying electrosurgical energy.
Visible white mark directly on the stencil line — this means your tip control is accurate
White mark off the stencil line — indicates the snare tip deviated from the target
Work sequentially — apply energy along the shape following the stencil marks in one continuous direction
5 minutes maximum per shape — a timer is used during formal assessment
Clean your snare with gauze and water between shapes
Follow these steps on ham-rater.gieqs.com to record and analyse your assessment:
Open the platform in your web browser on the laptop connected to your video capture chain
Use your existing GIEQs credentials or create a new account
Start a new assessment session from the dashboard
Choose from S1, S2, S3, or S4 (use S0 for practice first if you're new)
The platform will capture your endoscopy video feed as you trace the shape with the snare
For a full assessment, complete S1 through S4 sequentially in a single sitting
Once you finish, the AI analyses your video for speed, stability, and accuracy metrics
Check the History tab for detailed metrics and the Visualizations section for charts and comparisons
How quickly you trace the shape (mm/s). Faster is generally better but must be balanced with accuracy.
How steady your tip control is during intentional movement. Higher stability means more controlled movements.
Combined percentile score from speed and stability, benchmarked against the HAM-2 reference population.
Your results are compared against published HAM-2 study data across experience levels:
For detailed research findings, see the Research page.
Make sure you have all the equipment you need