Collapsible-Tip Vaginal Speculum for Easier Insertion and Viewing
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Solution Overview
Problem
Conventional vaginal speculums cause discomfort and pain during use due to the process of widening the blades after insertion, temperature and size of the device, and resistance upon insertion and removal, leading to patient avoidance of necessary medical care, and practitioners face difficulties with maneuverability and lighting requirements.
Innovation Solution
A vaginal speculum with a resiliently collapsable tip portion made of flexible materials like medical grade silicone, allowing for easy insertion and expansion to resist vaginal wall pressure, featuring a beveled edge and optional instrumentation grooves for visualization and procedure tools, and a handle that can be ambidextrous or separable for ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional vaginal speculums with rigid blades are used, then structural strength and sterilization capability are improved, but patient comfort and ease of insertion deteriorate due to resistance and pain during insertion and widening
Solution Approach 1:
The patent applies a flexible resin coating over a rigid core structure to create a speculum that combines structural strength with flexibility. The flexible outer layer allows the speculum to conform to vaginal walls during insertion and widening, reducing patient discomfort while the rigid core maintains structural integrity for sterilization and operational strength.
Solution Approach 2:
The speculum is constructed as a composite device with a rigid core (providing strength and sterilization capability) and a flexible resin coating (providing comfort and ease of insertion). This composite structure resolves the contradiction between needing structural strength and requiring patient comfort during insertion and use.
2Reliability
If conventional hinged speculums with stop mechanisms are used, then the ability to hold arms apart for examination is improved, but device complexity and difficulty of maneuverability increase
Solution Approach 1:
The patent removes the complex hinged mechanism and stop mechanism from conventional speculums, replacing them with a simple lever-operated locking system. The locking arms engage with simple notches in the lever, eliminating the need for complex hinges and multiple stop positions, thus reducing device complexity while maintaining the ability to hold arms apart securely.
Solution Approach 2:
The patent changes the operational parameter from complex multi-position hinged adjustment to a simple lever-based locking mechanism with fixed notches. This parameter change simplifies the device structure while maintaining reliable arm positioning for examination, reducing both device complexity and maneuverability difficulty.
3Ease of manufacture
If conventional solid barrel-type speculums are used, then manufacturing simplicity is improved, but ease of insertion deteriorates due to lack of collapsibility
Solution Approach 1:
The patent introduces dynamic collapsibility to the speculum design through the flexible resin coating that allows the device to collapse under compression during insertion and then expand to its functional shape once positioned. This dynamic behavior enables easy insertion of a compact form factor that expands to provide the necessary examination space, maintaining manufacturing simplicity while dramatically improving ease of insertion.
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 solution provides a more comfortable and efficient examination experience by reducing insertion discomfort, allowing both hands for procedure performance, and enabling better visualization and maneuverability, thus increasing patient compliance and practitioner efficiency.
Implementation Method 1
resiliently collapsable material of sufficient flexibility to collapse under manual pressure to reduce an insertion cross-section thereof for ease of insertion
Implementation Method 2
sufficient resiliency to expand and resist collapse from vaginal wall pressure once inserted
Data Source
AI summary
Described are various embodiments of a vaginal speculum. One embodiment comprises a handle portion and a tubular insertion portion mounted at an angle to the handle portion at a manipulatable end thereof. The tubular insertion portion defines a line-of-sight channel therein from the manipulatable end to a resiliently collapsable insertion tip portion of the tubular insertion portion. The resiliently collapsable insertion tip portion is manufactured of a resiliently collapsable material of sufficient flexibility to collapse under manual pressure to reduce an insertion cross-section thereof for ease of insertion, while being of sufficient resiliency to expand and resist collapse from vaginal wall pressure once inserted. Some embodiments provide for camera and/or lighting features. Vaginal speculum kits are further described, optionally having a reusable handle portion and various single-use, disposable tubular insertion portions which are connectable thereto for different anatomies, examinations and procedures.