Medical Fluid Pump Handle Layout for Horizontal Carrying Stability
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Solution Overview
Problem
Existing medical fluid pumps tend to tilt when carried by their handles, compromising stability and ease of use.
Innovation Solution
The carrying handle is hinged to the pump housing such that it lies in the direction of gravity over the center of gravity, with a spring element assisting its swiveling and locking mechanisms providing acoustic feedback for secure positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the carrying handle is made pivotable to improve ease of operation and storage, then the handle can be folded in for compact storage, but the pump tends to tilt when carried in the extended position
Solution Approach 1:
The patent positions the hinge axis of the carrying handle at a specific location on the pump housing such that the handle, when extended, creates a counterbalancing moment that offsets the pump's weight. This positioning effectively uses the handle's weight against the pump's weight to maintain horizontal stability during carrying operations.
Solution Approach 2:
The carrying handle is designed with a hinge mechanism that allows it to pivot between an extended carrying position and a folded storage position. This dynamic design enables the handle to adapt between two functional states: providing stable horizontal carrying when extended and enabling compact storage when folded.
2Stability of the object's composition
If the carrying handle is positioned to prevent tilting, then pump stability is improved, but the handle structure becomes more complex
Solution Approach 1:
Rather than adding complex stabilization mechanisms, the patent achieves stability through careful positioning of the hinge axis and exploitation of the handle's own weight as a counterbalancing force. This approach maintains structural simplicity while achieving the desired stability.
Solution Approach 2:
The carrying handle serves dual functions: it provides the primary carrying function and simultaneously acts as a counterweight to prevent tilting. The handle's weight, which would normally be a destabilizing factor, is instead utilized to balance the pump's weight and maintain horizontal orientation during carrying.
3Volume of moving object
If the carrying handle is made compact for storage, then space efficiency is improved, but gripping ability is reduced
Solution Approach 1:
The hinge mechanism enables the carrying handle to dynamically change its configuration between a compact folded state for storage and an extended configuration for carrying and gripping. This dynamic transformation allows the handle to optimize its geometry for different operational requirements.
Solution Approach 2:
The carrying handle is segmented into a handle portion and a hinge mechanism that allows relative movement between these parts. This segmentation enables the handle to be folded compactly for storage while maintaining a full-size extended configuration for easy gripping and carrying operations.
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
Ensures the pump remains horizontal during transport, enhancing stability and ease of handling while allowing space-efficient storage.
Implementation Method 1
a spring element whose spring force/prestressing force counteracts a weight of the carrying handle so as to push the carrying handle to the swiveled-out state
Implementation Method 2
the carrying handle is hinged to the housing such that a handle portion/handle region of the carrying handle lies, in a swiveled-out state, in the direction of gravity (substantially) over a center of gravity of the fluid pump
Data Source
AI summary
A medical fluid pump has a housing, a front lid pivotably hinged to the housing, and a carrying handle. The carrying handle, which may have a bow-shaped design, is pivotably hinged to two opposing side faces of the housing. The carrying handle is hinged to the housing such that a handle portion of the carrying handle lies, in a swiveled-out state, in a direction of gravity substantially over a center of gravity of the fluid pump.