Ear Irrigation Device Intermittent Flow Piston Mechanism
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Solution Overview
Problem
Existing ear irrigation devices cause discomfort due to continuous water flow, which impacts the tympanic membrane during irrigation.
Innovation Solution
An ear irrigation device with a piston and rotor mechanism that creates intermittent water flow through a check valve system, allowing water to flow in and out of the ear canal alternately, reducing the impact on the tympanic membrane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a general electric irrigation device is adopted to pump water into the auditory canal, then the irrigation function is achieved, but the tympanic membrane in the auditory canal will be subjected to an impact since the water flow is continuous, thereby causing discomfort to the user
Solution Approach 1:
The patent applies periodic action by using a piston mechanism that moves reciprocally to create intermittent water flow instead of continuous flow. The piston's periodic movement alternates between drawing water into the chamber and expelling it through the outlet, thereby reducing impact on the tympanic membrane while maintaining irrigation effectiveness
Solution Approach 2:
The patent implements dynamics by introducing a movable piston that changes the volume of the water chamber dynamically. The piston's movement transforms the static water reservoir into a dynamic system where water flow can be controlled in stages, enabling intermittent delivery that reduces harmful impact while preserving operational functionality
2Ease of operation
If hand pressing of ear washer reservoir is used, then water can be pumped into auditory canal, but different pressing handles are required and operation is troublesome
Solution Approach 1:
The patent replaces the manual mechanical pressing system with an electric pump system driven by a motor. This substitution eliminates the need for multiple pressing handles and manual operations, providing a more convenient single-button electric control while maintaining the water pumping function
Solution Approach 2:
The patent achieves universality by designing a single electric irrigation device that integrates multiple functions: water storage, electric pumping, flow regulation, and intermittent delivery. This multi-functional integration replaces the need for multiple separate manual components, simplifying operation while managing device complexity through functional consolidation
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 device ensures intermittent water flow, minimizing discomfort and effectively irrigating the ear canal without continuous pressure on the tympanic membrane.
Implementation Method 1
One end of the water inlet chamber is provided with a slidably engaged piston by insertion, the piston and an interior of the water inlet chamber form a chamber
Implementation Method 2
When the eccentric rotating assembly drives the piston to move in a direction away from the chamber formed by the water inlet chamber through the rotor on the link, a negative pressure is generated in the chamber
Implementation Method 3
a check valve in unidirectional communication with the interior of the water inlet chamber is arranged in the water inlet assembly, and another check valve in unidirectional communication with the outside of the water inlet chamber is arranged in the water outlet assembly
Implementation Method 4
an end of the link away from the rotor is connected with an eccentric rotating assembly which drives one end of the link connecting the rotor to reciprocate in the direction of the chamber
Implementation Method 5
The rotor is connected with a link, an end of the link away from the rotor is connected with an eccentric rotating assembly
Data Source
AI summary
An ear irrigation device includes a water reservoir, a water inlet chamber, a water inlet assembly communicating with the water inlet chamber and a water outlet assembly communicating with the water inlet chamber. A piston is inserted at one end of the water inlet chamber, the piston and an interior of the water inlet chamber form a chamber, a recess is formed on a side of the piston away from the chamber, a rotor is rotatably connected in the recess, the rotor is connected with a link, an end of the link away from the rotor is connected with an eccentric rotating assembly, one end of the water inlet assembly communicates with the water reservoir, a check valve is arranged in the water inlet assembly, and another check valve is arranged in the water outlet assembly.