Radially Expanding Speculum for Symmetric Cervical Visualization
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Solution Overview
Problem
Existing vaginal specula fail to provide adequate visualization of the cervix due to asymmetric dilation, discomfort, and the need for multiple clinicians to manage equipment, leading to potential misdiagnosis and increased costs, especially in underserved populations.
Innovation Solution
A radially expanding speculum with a petal assembly that dilates the vagina in multiple axes, allowing for improved visualization and the integration of auxiliary equipment like imaging systems and smoke evacuation, facilitated by a mounting system that includes a smartphone and data network for remote analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a two-bladed speculum is used for cervical visualization, then the structure is simple and easy to manufacture, but the visualization of the cervix is inadequate due to asymmetric dilation and collapsing vaginal walls
Solution Approach 1:
The speculum is divided into multiple independent blades (typically four) that can move separately. Each blade can be positioned independently to achieve symmetric radial dilation, preventing vaginal wall collapse and providing complete cervical visualization without the constraints of a two-blade asymmetric design.
Solution Approach 2:
The speculum transitions from two-dimensional planar dilation to three-dimensional radial expansion. The blades expand outward in multiple directions simultaneously, creating a radial pattern that evenly dilates the vaginal canal and maintains wall separation, eliminating the asymmetric dilation problems of traditional designs.
2Ease of operation
If large blades are used in the two-bladed speculum, then the structure is simpler, but the blades are difficult to introduce into the vagina of an apprehensive patient
Solution Approach 1:
The large single blades are segmented into multiple smaller blades. This allows the speculum to be introduced more easily since the individual blades are smaller and less intimidating, while still achieving adequate dilation when all blades are positioned together. The segmented design reduces patient apprehension and discomfort during insertion.
Solution Approach 2:
The blades are designed to be dynamic rather than static. They can be adjusted independently to match patient anatomy and comfort levels during insertion, then positioned to achieve optimal visualization. This dynamic adjustment capability allows gradual adaptation to patient tolerance while maintaining visualization quality.
3Ease of operation
If the two-bladed speculum opens asymmetrically, then the structure is simpler, but excessive dilation occurs in certain parts causing patient discomfort
Solution Approach 1:
The invention intentionally uses symmetry rather than asymmetry. By designing the speculum with multiple blades arranged symmetrically around the central axis, each blade dilates the vaginal wall equally. This symmetric configuration prevents excessive dilation in any single area, distributing the dilation force evenly and eliminating the discomfort caused by asymmetric expansion.
Solution Approach 2:
The speculum achieves symmetric dilation by expanding in three dimensions radially outward from the center, rather than opening in a single plane. This radial expansion in multiple dimensions ensures equal distribution of dilation force across all vaginal walls, preventing localized excessive dilation and associated patient discomfort.
4Measurement precision
If a colposcope and multiple equipment are used for diagnosis and treatment, then the diagnostic accuracy is improved, but multiple skilled clinicians are required and procedures become cumbersome
Solution Approach 1:
The speculum integrates multiple diagnostic and treatment functions into a single device. Imaging capabilities, light sources, and treatment instrument channels are merged within the speculum structure itself, allowing one clinician to perform visualization, imaging, and treatment procedures without needing multiple separate equipment systems or additional clinicians.
Solution Approach 2:
The speculum is designed as a universal platform that can perform multiple functions: visualization through transparent blades, imaging with integrated cameras or sensors, illumination with built-in lights, and treatment with accessible channels for various instruments. This multi-functionality eliminates the need for multiple specialized devices and reduces personnel requirements while maintaining diagnostic accuracy.
5Ease of operation
If pressure is released from the two-bladed speculum, then the speculum can be removed, but it may be moved out of position or ejected from the patient
Solution Approach 1:
The multiple blades provide distributed support around the vaginal canal, creating stable contact points at various locations. When pressure is released for removal, the segmented blade structure maintains positional stability better than a two-blade design, as the multiple contact points prevent lateral movement or ejection while still allowing controlled withdrawal.
Data Source
AI summary
A vaginal speculum, conical in shape, made out of clear plastic resin or metal that when closed can easily and gently be inserted into the introitus (vaginal opening). In certain embodiments, a dilator is used to introduce and/or expand the speculum. Various mechanisms are disclosed for dilating the speculum, after it has been inserted, so as to allow inspection of the patient's cervix. Such dilation can be affected relative to multiple axes, or even in substantially continuous, radial fashion about the periphery of the speculum, for improved visualization. In addition, the speculum may include a mount for mounting auxiliary equipment for simplified handling. Such auxiliary equipment may include imaging elements, electrosurgical equipment, and smoke evacuation equipment, among other things. Associated processing equipment enables processing of image information locally or remotely via a data network.