Hybrid Patient Connection Setup with Skate Block and Tracking Line

In this horizontal rescue setup, the team demonstrates a hybrid patient connection system combining a skate block line over a tracking line, offering both smooth movement and built-in redundancy. The configuration prioritizes patient safety while keeping the rigging clean and manageable.

Let’s walk through the system components and their functions, and why this dual-line configuration is ideal in situations where edge transitions and controlled horizontal movement are necessary.

System Overview

Tracking Line (Red Line)

• Anchored from above and hand-tensioned at the base using a Petzl I’D.

• Functions as a backup support system in this hybrid setup.

• A Petzl ASAP is installed on the tracking line for redundancy.

  • If the skate block line fails, the ASAP arrests the fall.

  • This prevents a catastrophic swing or uncontrolled descent.

Skate Block Line

• Connected to the litter using a double pulley, which routes cleanly through the system.

• Anchored and tensioned as the primary load-bearing line, guiding the litter down.

• A scaffold knot secures the pulley directly to the carabiner, which connects to the patient’s sternal D-ring.

Why This Setup Works

This configuration allows for dual-line redundancy while keeping the rigging efficient and uncluttered:

• Double Pulley System: Using a single double pulley keeps the rigging organized. Two separate pulleys could work, but the double pulley makes the system more streamlined.

• Redundancy Without Interference:

  • The Petzl ASAP is connected directly, without an extension sling or jumper.

  • This prevents premature activation due to slack being taken up by the shock pack.

  • The ASAP remains free-running along the tracking line unless engaged by a failure.

Redundancy Logic and Safety

What Happens If the Skate Block Line Fails?

• The patient will begin to move rapidly on the tracking line.

• The ASAP will engage, catching the load and preventing full descent.

• The system becomes suspended on the tracking line, requiring a follow-up pickoff or transition.

What Happens If the Tracking Line Fails?

• The skate block line continues to support the patient.

• There might be some minor drop distance as tension settles.

• However, this is non-catastrophic and well within the system’s tolerance.

Important Considerations

• Avoid Overloading the ASAP: Do not use extension slings that would preload the device. A short direct connection (carabiner only) is used here to keep the ASAP passive until needed.

• Balance the Lines: While the tracking line is not intended to be fully tensioned, it should be hand-tensioned enough to prevent excessive sag if the skate block line fails.

• Anchor Strategy: Both lines need independent, bombproof anchors to support this hybrid setup.

Summary

The Hybrid Patient Connection Setup featuring a skate block line over a tracking line is a practical and effective solution for tower and horizontal rescues. With the Petzl ASAP providing passive redundancy and a clean pulley system guiding the load, this configuration strikes a balance between safety and simplicity.

Key Takeaways:

• ✅ Redundant support without excess hardware

• ✅ Streamlined connection to patient harness

• ✅ Designed for smooth, guided descent with backup

MORE ON TAGS GUIDE AND TRACK LINES

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