Disposable Plastic Speculum With Lateral Stabilization and LED Lighting
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Solution Overview
Problem
Conventional metal speculums cause patient discomfort due to pinching, scraping, and lateral movement, and lack sufficient illumination, while plastic speculums suffer from lateral instability and inadequate lighting solutions.
Innovation Solution
A disposable plastic speculum with a lateral stabilizing mechanism and integrated LED light source on the curved portion of the handle, eliminating lateral movement and providing directional illumination without external wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional metal speculums are used, then the speculum can be autoclavable and durable, but it causes patient discomfort due to pinching, scraping, and lateral movement
Solution Approach 1:
The patent employs disposable plastic speculums that are discarded after single use, eliminating the need for autoclaving while ensuring patient comfort. The disposable nature prevents cross-contamination and eliminates lateral movement issues associated with reusable metal speculums.
Solution Approach 2:
The invention changes the material parameter from metal to plastic, and modifies the structural parameters by adding lateral stabilizing mechanisms and curved portions that prevent lateral movement, thereby transforming the speculum from causing discomfort to providing patient comfort.
2Object-affected harmful factors
If plastic speculums with double-hinge are used, then patient comfort is improved, but lateral stability deteriorates causing speculum movement or collapse
Solution Approach 1:
The speculum is divided into multiple functional segments: double-hinge mechanisms for vertical flexibility and patient comfort, separate lateral stabilizing mechanisms for preventing lateral movement, and curved portions for additional stability. This segmentation allows each component to address specific requirements independently.
Solution Approach 2:
The invention introduces asymmetric curved portions and laterally offset hinge mechanisms that provide lateral stability without compromising the vertical flexibility needed for patient comfort. The asymmetric design creates natural lateral support while maintaining the necessary opening and closing functionality.
3Illumination intensity
If head-mounted lights are used for illumination, then lighting is provided, but operator comfort deteriorates due to discomfort and cumbersome light cord
Solution Approach 1:
The illumination system is extracted from external sources (head-mounted lights or gooseneck lamps) and integrated directly into the speculum handle. This integration eliminates the need for cords and external power sources, providing wireless illumination that moves with the speculum.
Solution Approach 2:
The patent merges the illumination function with the speculum structure by integrating LED light sources and batteries directly into the handle. This combination creates a self-contained unit that provides lighting without external cords, improving operator comfort while maintaining illumination.
4Illumination intensity
If lights are built into the handle center, then illumination is provided, but lateral movement increases due to offset hinge mechanism
Solution Approach 1:
The invention applies local quality by positioning the light source and hinge mechanisms at specific locations optimized for their respective functions. The hinge is laterally offset to one side while the light source is positioned to provide optimal illumination without interfering with lateral stability, allowing each component to perform its function without compromising overall performance.
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 ensures stable, comfortable use with clear visibility and reduced risk of cross-contamination by integrating a built-in LED light source, minimizing lateral movement, and eliminating the need for external illumination.
Implementation Method 1
The light source is disposed on the curved portion
Data Source
AI summary
A speculum, comprising a handle portion including a proximal end, a distal end and at least one sidewall connecting the proximal end and the distal end and having a cavity in the sidewall thereof, a lower blade connected to the handle portion, an upper blade movably connected to the lower blade, the upper and lower blades being configured to move relative to one another between a closed state and an open state, and a lighting assembly comprising at least one light source and at least one energy storage device, said lighting assembly being at least partially disposed in the cavity in the sidewall of the handle portion.