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Adjustable Litter Handle for Search and Rescue
3,453
wilderness rescue operations in the US in 2017
2. Adjustable Litter Handle Litter Handle for Search and Rescue - - PowerPoint PPT Presentation
2. Adjustable Litter Handle Litter Handle for Search and Rescue - - PowerPoint PPT Presentation
2. Adjustable Litter Handle Litter Handle for Search and Rescue 3,453 wilderness rescue operations in the US in 2017 Manual Carries More comfortable cooperation between rescuers of different heights Product Goals More ergonomic
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Manual Carries
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- More comfortable cooperation
between rescuers of different heights
- More ergonomic lifting for rescuers
- Lessen fatigue in rescuers
Product Goals
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Litter Handle CAD
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Litter Handle
Release lever Ratchet
Split clamp attachment
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Product Contract
CUSTOMER NEED PRODUCT ATTRIBUTE ENGINEERING SPECIFICATION
Can attach to existing stretchers or litters Attachment Mechanism Attaches to ⅝" - ¾" diameter litter railing Makes it easier to carry and lift someone Adjustable height and angle of handle 90 degree rotation, adjustable height of at least 12" Can easily be transported to emergency location and back Weight Total weight less than 5 lbs Easy to navigate through small spaces Size Less than 3” wide when vertical, less than 13” wide when horizontal Can support the weight of a person Load weight More than 200 lbs
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Risks and lessons
- Clamp mechanisms only lock in tension
- Ratchets have directional locking
- Parallel translational mechanisms led to mechanical
binding
- Rotational adjustments are limited by handle position
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Pricing
Cascade Rescue Equalizer
- $465 - $850 for a set of four handles
Our litter handles
- $100 - $150 per handle
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Next Steps
User testing for ease of use Iterate on design and customize parts Design for adaptability to different litters Further consider design constraints
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Citations
[1] Biley, R., 2015, “Formula SAE Anthropometric Reference Data: 5th Percentile Female & 95th Percentile Male.” from https://www.fsaeonline.com/content/FSAE%20Rules95th_2016.pdf. [2] Cascade Rescue, 2017, “The EQUALIZER - Adjustable Litter Handle System.” from https://cascade-rescue.com/products/the-equalizer-adjustable-litter-handle- system.html. [3] Harris, S., 2018, Board of Directors, Central Massachusetts Search and Rescue Team, private communication. [4] Reid, A.“Equipment Limitations” 25-Sep-2018. Spoke about equipment limitations faced by park rangers in designated wilderness areas. Discussed firefighting equipment and search and rescue equipment. [5] 2017 Annual SAR Dashboard, https://nps.maps.arcgis.com/, (Accessed 10/15/18)