Medical Peristaltic Pump Electromagnetic Locking Safety
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Solution Overview
Problem
The existing medical peristaltic pumps have a complex structure that exposes gears and rollers within the pumping chamber, posing a safety risk to operators when changing hoses.
Innovation Solution
A medical peristaltic pump design featuring a simplified structure with a detachable rotor and connecting member, latching claws, and an electromagnetic locking mechanism, along with a gear reduction mechanism and a cover with a hinge, to ensure safe operation and user protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the structure of the peristaltic pump is simplified, then safety is improved, but the reliability of the connection between driver and rotor may deteriorate
Solution Approach 1:
The patent replaces the traditional exposed mechanical gear system with an electromagnetic locking mechanism that uses magnetic fields to secure the connection between the driver and rotor. This substitution eliminates the need for exposed mechanical gears while maintaining reliable power transmission through magnetic coupling, thereby improving safety without compromising connection reliability.
Solution Approach 2:
The patent employs a cover with hinge connection that can enclose the driver and rotor assembly, creating a protective barrier. This flexible enclosure allows the system to maintain safety by preventing operator exposure to moving parts while still enabling access when needed, thus resolving the contradiction between safety and operational accessibility.
2Ease of operation
If the gears and rollers are exposed within the pumping chamber, then the ease of operation for hose changes is improved, but the safety risk increases
Solution Approach 1:
The patent divides the pump into separable modules: the driver assembly (containing gears and rollers) can be detached from the pumping chamber as a complete unit. This segmentation allows operators to change hoses without exposing themselves to exposed gears, as the entire dangerous assembly can be removed and replaced as one piece, thus maintaining ease of operation while eliminating safety risks.
Solution Approach 2:
The patent introduces an electromagnetic locking mechanism as an intermediary between the driver and rotor. This intermediary allows power transmission while enabling safe, tool-free detachment of the driver assembly during hose changes, thus facilitating ease of operation without requiring operators to expose themselves to moving parts.
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 design enhances safety and simplifies the structure of the medical peristaltic pump, reducing the risk of injury during hose changes and maintaining leak-free and sanitary operation while ensuring consistent medium flow.
Implementation Method 1
a resilient member is provided between the locking member and the main body, the resilient member pushes the locking member to maintain the locking member in a position which allows the latching cutout/barb of the locking member to latch with the corresponding barb/latching cutout
Implementation Method 2
a spring arranged to move the sliding block radially outwardly to urge the roller into contact with the hose
Implementation Method 3
an electromagnetic locking mechanism is provided between the cover and the chamber
Implementation Method 4
one of the cover and the chamber is equipped with a permanent magnet, the other one is equipped with a sensor, and the sensor interacts with the magnet to sense an open or close state of the cover
Data Source
AI summary
A peristaltic pump includes a driver, a pump body, a hose, a rotor and a connecting member. The driver includes a supporting shaft. The pump body includes a chamber housing the rotor. The hose is assembled to an internal side of a wall of the chamber. The connecting member connects the driver with the rotor, and is received in the chamber. The rotor is configured to sequentially squeeze the hose to cause medium in the hose to flow. The connecting member and the rotor rotate about and are supported by the supporting shaft. The medical peristaltic pump has a simple structure and is easy to operate.