Overhead Loading Device for Emergency Vehicle Patient Transport
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Solution Overview
Problem
Current methods for loading and unloading patient supports in emergency vehicles are strenuous and require significant manual effort, potentially leading to injury, especially when dealing with heavy patients, and existing automated systems occupy valuable floor space.
Innovation Solution
An overhead loading device with a beam mounted at the ceiling of the patient compartment, featuring a carriage and load carrying member that can extend and retract, along with a winch system to support and move patient supports without occupying floor space, allowing for efficient loading and unloading of various patient supports like cots, wheelchairs, and stretchers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual loading and unloading methods are used, then the process is simple and does not require complex equipment, but it requires significant manual effort and exposes personnel to injury risk
Solution Approach 1:
The patent introduces an overhead loading device as an intermediary mechanism between the patient support and the loading space. This device includes a load carrying member that can be positioned to engage the patient support, and a carriage system that moves along an overhead beam to transport the loaded patient support into the cargo vehicle, thereby mediating the heavy lifting and positioning tasks
Solution Approach 2:
The patent transitions from floor-based loading mechanisms to an overhead loading system. By mounting the beam and carriage mechanism above the patient compartment, the system utilizes the vertical dimension and overhead space, freeing up floor space while providing mechanical assistance for loading operations
2Ease of operation
If automated loading systems are used, then manual effort is reduced, but they occupy significant floor space
Solution Approach 1:
The patent relocates the loading mechanism from the floor plane to the overhead space. The beam is mounted to the ceiling structure, and the carriage travels along this overhead beam, utilizing the vertical dimension and previously underutilized overhead space, thereby achieving automated loading assistance without consuming valuable floor space
Solution Approach 2:
The patent extracts the loading mechanism from the floor area and positions it in the overhead region. By separating the loading function from the floor space, the system maintains passenger capacity and mobility on the floor while providing automated loading capabilities through the overhead carriage system
3Device complexity
If manual loading methods are used, then equipment cost is low, but personnel safety is compromised due to injury risk
Solution Approach 1:
The overhead loading device serves as a safety intermediary by bearing the weight of the patient support during loading and unloading operations. The load carrying member and carriage system mechanically support the heavy loads, preventing personnel from directly bearing the weight and reducing the risk of musculoskeletal injuries
Solution Approach 2:
The loading device enables the patient support to be loaded and unloaded with minimal human physical intervention. The carriage system automatically moves along the beam, and the winch or motorized mechanism handles the heavy lifting, allowing personnel to primarily perform guiding and monitoring functions rather than strenuous physical labor
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The overhead loading device reduces manual effort and minimizes the risk of injury by providing a safe and efficient mechanism for loading and unloading patient supports, while also conserving floor space within the vehicle.
Implementation Method 1
The winch and load carrying member are configured to support the patient support, allowing the patient support to be pushed or pulled into the patient compartment
Data Source
AI summary
An overhead loading device for use with an emergency vehicle having a patient compartment includes at least one beam configured for mounting at a ceiling of the patient compartment of the emergency vehicle, a carriage engaged for movement along the beam and configured to traverse at least a portion of the beam between an extended position and a retracted position, and a load carrying member operatively connected to the carriage and extending from the carriage. The load carrying member has a free end for attachment to a patient support. The carriage is configured to extend at least partially outside of the patient compartment when in the extended position and be positioned inside the patient compartment when in the retracted position.