Handheld Middle Ear Apparatus with Flexible Lumen
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Solution Overview
Problem
Current methods for delivering drugs to sensitive and small-scale body parts, such as the ear for treating conditions like Otitis Media, lack precise control over fluid removal and drug delivery, often resulting in side effects and inefficiencies.
Innovation Solution
A handheld apparatus with a spring-loaded mechanism that allows for controlled vacuum application and drug delivery, featuring a flexible lumen tip that deforms to prevent penetration of skin or bone, and a safety mechanism to prevent fluid delivery without vacuum application, enabling precise administration of medication directly to the middle ear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a needle penetrates the tympanic membrane for drug delivery, then direct medication to the middle ear is achieved, but risk of damaging skin or bone increases
Solution Approach 1:
The lumen incorporates a flexible tip that can deform under resistance, allowing the system to distinguish between the tympanic membrane (which should be penetrated) and harder structures like skin or bone (which should not be penetrated), thereby reducing damage risk while maintaining delivery precision
Solution Approach 2:
The lumen's flexibility and ability to deform dynamically in response to encountered resistance provides real-time feedback, enabling the operator to adjust or stop the procedure before damaging protected structures, while still allowing penetration of the intended target
2Productivity
If fluid delivery is enabled without vacuum application, then drug delivery speed is improved, but risk of inaccurate dosing or contamination increases
Solution Approach 1:
The system requires vacuum application to be established before fluid delivery can commence, ensuring the middle ear environment is prepared and ready to receive the medication, which prevents contamination and ensures accurate dosing while maintaining efficient delivery
Solution Approach 2:
The interlinked valve mechanism provides immediate feedback by preventing fluid delivery until vacuum is confirmed, ensuring the correct sequence is followed and the delivery conditions are appropriate, thereby maintaining both speed and reliability
3Productivity
If vacuum level is increased for better fluid removal, then aspiration effectiveness is improved, but risk of tissue damage increases
Solution Approach 1:
The flexible lumen tip provides dynamic feedback about the resistance encountered during insertion and aspiration, allowing the operator to adjust vacuum levels in real-time to maximize fluid removal while minimizing the risk of damaging surrounding tissues
Solution Approach 2:
The system allows for adjustment of vacuum parameters based on real-time conditions, enabling optimization of aspiration effectiveness while staying within safe limits to prevent tissue damage
4Measurement precision
If the apparatus requires multiple separate controls for vacuum and drug delivery, then control precision is improved, but device complexity increases
Solution Approach 1:
The vacuum and drug delivery controls are merged into a single integrated valve mechanism with interlinked actuators, maintaining precise control over both functions while reducing the number of separate controls and simplifying the overall apparatus structure
Solution Approach 2:
The single valve mechanism serves multiple functions by controlling both vacuum application and fluid delivery through interlinked actuators, reducing device complexity while maintaining the precision needed for both 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
Enables safe and controlled delivery of medications directly to the middle ear with precise control over vacuum and drug administration, reducing the risk of side effects and improving treatment efficacy.
Implementation Method 1
at least one valve includes a spring-loaded pinching member to pinch a flexible tube
Implementation Method 2
the vacuum device comprises a sealed vacuum chamber which may be pierced
Implementation Method 3
The lumen is adapted to bend or deform if an obstruction is encountered which presents a resistance greater than a threshold
Data Source
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AI summary
An apparatus (100) can be connected to an otoscope (500) and used to aspirate the middle ear and to deliver a medicament in the one operation. It can be operated by a single hand, allowing stabilisation of the patient's head during the procedure. The extent of vacuum application and of drug delivery is fully under user control both in terms of volume and duration. Aided by the otoscope (500), and operation of a lever (110) by the second finger extends the lumen (140) which will perforate the tympanic membrane (ear drum). Once the tympanic membrane is punctured, the user will press a vacuum push button (111) which allows fluid to be aspirated from the middle ear through the lumen (140). The extent of vacuum and its duration can be controlled because the clinician can control the movement of the button (111) between the extreme positions. The user will then press a lever (112) to administer a prescribed dose of drug into the middle ear. Again, the extent of medicament flow and its duration can be controlled because the clinician can control the movement of the lever (112) between the extreme positions. The extension mechanism lever (110) is then released.