Rapid Extraction Body Harness for Single-Person Dragging
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Solution Overview
Problem
Traditional methods for removing downed or injured law enforcement and military personnel from hostile environments are time-consuming, strenuous, and require multiple rescuers, exposing them to increased risk.
Innovation Solution
The Draggin' Rescue Device (DRD), a lightweight, adjustable body harness with 4,000 lbs-rated webbing and quick-release buckle, allows for single-person horizontal extraction by providing leverage and reducing the number of rescuers needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional methods are used to remove downed or injured personnel, then the personnel can be extracted from the hostile environment, but it requires three to four people and takes more time
Solution Approach 1:
The body harness acts as an intermediary device between the rescuer and the downed personnel. The harness includes a handle that extends from the back of the tactical vest, allowing a single rescuer to grab and pull the victim. The harness distributes the load across multiple attachment points (shoulder straps, back strap, waist strap) to enable one-person extraction without compromising safety
Solution Approach 2:
The harness is segmented into multiple independent components that can be adjusted and secured separately: shoulder straps with quick-release buckles, a back strap, and a waist strap with hook-and-loop connectors. This segmentation allows the harness to be customized to fit different body types and tactical gear configurations while maintaining its extraction capability
2Productivity
If traditional methods are used to remove downed or injured personnel, then the personnel can be extracted, but it is time consuming and strenuous
Solution Approach 1:
The body harness serves as a mechanical intermediary that reduces the physical effort required by the rescuer. By distributing the victim's weight across multiple attachment points and providing a handle for pulling, the harness converts a strenuous manual carry into a more manageable pulling operation, reducing rescuer fatigue and effort
Solution Approach 2:
The harness is designed to be pre-adjusted and secured on the downed personnel before extraction begins. The quick-release buckles and hook-and-loop connectors allow for rapid donning and adjustment, ensuring the harness is properly positioned and secured prior to the extraction operation, thereby streamlining the overall process
3Productivity
If traditional methods are used to remove downed or injured personnel, then the personnel can be extracted, but it exposes rescuers to the threat for longer periods
Solution Approach 1:
The body harness acts as a protective intermediary that enables faster extraction by reducing the number of rescuers needed. By providing a secure attachment system that allows single-person operation, the harness minimizes the time rescuers are exposed to the hostile environment while maintaining safety and control during the extraction process
Data Source
AI summary
A body harness comprising a waist strap for fastening around the torso of a user; a shoulder strap having a first distal end affixed to a right side of the waist strap and a second distal end affixed to a left side of the waist strap generally opposite from the first distal end; the shoulder strap extending upward from the waist strap in a looped arrangement for fastening over the front of the shoulders and behind the back of the neck of the user so that an apex of the shoulder strap is positioned generally behind the back of the neck of the user when worn; a back strap extending between the apex of the shoulder strap and the waist strap for supporting the back of the user when being dragged; and, a handle carried at the apex of the shoulder strap to facilitate dragging of the user.