Radially Expanding Vaginal Speculum with Multi-Blade Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vaginal specula fail to provide adequate visualization of the cervix due to limited expansion capabilities, causing discomfort and potential missed diagnoses, and are not universally compatible with varying patient anatomy, requiring specialized equipment and tables.
Innovation Solution
A radially expanding vaginal speculum with a petal assembly that moves in multiple dimensions, allowing for improved visualization and comfort, using a dilator to expand and contract petals, and a handle orientation that facilitates use without a gynecological examination table, along with a cost-effective design and light source integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a two-bladed speculum is used, then the structure is simple, but the visualization of the cervix is insufficient and vaginal walls collapse between blades
Solution Approach 1:
The speculum is divided into multiple independent blades (at least three blades instead of two) that can move and position independently. This segmentation allows the blades to distribute pressure more evenly across the vaginal walls, preventing collapse while maintaining structural simplicity. Each blade can be adjusted to optimize the view of the cervix without requiring complex mechanical linkages.
Solution Approach 2:
The patent introduces movement in additional dimensions by allowing blades to pivot not only around a single axis but also to adjust their position radially and independently. This multi-dimensional adjustment capability enables the blades to adapt to different patient anatomies while maintaining adequate separation to prevent wall collapse, thereby improving cervix visualization without excessive complexity.
2Force
If large blades are used in a two-bladed speculum, then the dilation capability is sufficient, but the introduction into the vagina is difficult for apprehensive patients
Solution Approach 1:
The speculum employs dynamic, movable blades that can be gradually opened during insertion rather than requiring the full dilation configuration from the start. The blades can be positioned in intermediate states to facilitate gentle introduction into apprehensive patients, then progressively opened to achieve adequate dilation capability. This dynamic adjustment reduces patient anxiety and improves insertion ease while maintaining sufficient dilation power.
Solution Approach 2:
By dividing the dilation function across multiple independent blades rather than relying on two large blades, the speculum can achieve adequate dilation through distributed pressure from smaller, more manageable blade elements. This segmentation allows for a more gradual and comfortable insertion process while still providing sufficient overall dilation capability.
3Device complexity
If a two-bladed speculum is used, then the design is simple, but it does not accommodate variation in patient anatomy
Solution Approach 1:
The speculum incorporates movable and adjustable blades that can be positioned at various angles and distances from the speculum body. This dynamic adjustability allows the device to adapt to different patient anatomies, including variations in vaginal width, cervix position, and pelvic structure. The blades can be reconfigured to optimize the view and access for different patient types without requiring multiple specialized devices.
Solution Approach 2:
The independent, segmented blade structure allows each blade to be adjusted individually to accommodate different patient anatomies. This segmentation provides flexibility in positioning and angulation, enabling the same basic speculum design to adapt to a wide range of patient characteristics while maintaining structural simplicity.
4Ease of operation
If conventional speculum handles are used, then the orientation is standard, but a specialized gynecological table with stirrups is required
Solution Approach 1:
The speculum handle is designed with a universal orientation that can be used with various table configurations, including but not limited to specialized gynecological tables with stirrups. The handle can be positioned and operated effectively whether the patient is in a lithotomy position, semi-lithotomy position, or other common examination positions. This multi-position compatibility eliminates the requirement for specialized equipment while maintaining ease of operation.
5Device complexity
If existing specula are used, then the structure is conventional, but they create a disconcerting clicking sound upon closing
Solution Approach 1:
The patent addresses the harmful clicking sound by modifying the blade closure mechanism to eliminate the noise while maintaining the necessary structural integrity and function. The blade edges are designed to close smoothly without generating disconcerting sounds, converting a harmful auditory disturbance into a quiet, comfortable closing action that reduces patient anxiety and improves the overall examination experience.
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, this speculum has a handle that is oriented such that a vaginal exam can be performed on a standard exam table. The handle also includes a receptacle that receives a standard pen light. A self-contained kit is also provided to facilitate cervical examinations and treatment.