Air Speculum Pressure Control Without a Vaginal Seal
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Solution Overview
Problem
Existing inflatable vaginal speculums require a watertight or airtight seal against the vaginal walls, causing discomfort and necessitating sterilization of instruments, while lacking efficient illumination and access to a larger vaginal and cervical area.
Innovation Solution
A speculum with lumens for pressurized air introduction and pressure measurement, integrated with a viewing device and optional tool channel, eliminating the need for a vaginal plug and allowing continuous pressure monitoring and illumination, using a pump and controller unit for air flow regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a watertight or airtight seal is used against the vaginal walls, then fluid flow prevention is improved, but patient comfort deteriorates and sterilization requirements increase
Solution Approach 1:
The patent removes the traditional watertight seal component from the speculum design. Instead of using a seal to prevent fluid flow, the system extracts this function by using a non-sealing speculum combined with external fluid collection mechanisms, thereby eliminating the discomfort and sterilization issues associated with tight seals while maintaining procedural effectiveness
Solution Approach 2:
The patent introduces an intermediary fluid collection system that sits between the speculum and the collection container. This intermediary system allows fluid to be collected without requiring the speculum itself to create a tight seal, thus resolving the contradiction between fluid prevention reliability and patient comfort
2Stress or pressure
If a vaginal plug is used to maintain pressure, then pressure control is improved, but device complexity and sterilization requirements increase
Solution Approach 1:
The patent extracts the vaginal plug component from the speculum system. Pressure control is achieved without inserting a plug into the vagina, thereby reducing device complexity and eliminating the sterilization requirements associated with components that contact vaginal tissues
Solution Approach 2:
The patent replaces the mechanical vaginal plug system with a pressure monitoring and control system that uses sensors and regulated air flow. This substitution maintains pressure control capability while eliminating the need for complex sealed components and reducing sterilization requirements
3Device complexity
If traditional speculum design is used, then structural simplicity is improved, but access to larger vaginal and cervical area deteriorates
Solution Approach 1:
The patent introduces illumination and imaging components that add a visual dimension to the examination capability. This allows the speculum to provide access to a larger area by enabling visualization of regions that would otherwise be difficult to see, effectively expanding the functional access area without significantly complicating the basic speculum structure
Solution Approach 2:
The patent integrates multiple functions into the speculum including illumination, imaging, and fluid collection capabilities. This multi-functionality allows a single device to provide both mechanical access and visual examination, thereby expanding the effective access area while maintaining reasonable structural simplicity
4Reliability
If instruments require sterilization, then infection prevention is improved, but procedure time and complexity increase
Solution Approach 1:
The patent extracts instruments from the vaginal environment by using a non-sealing speculum design. Since instruments do not need to penetrate or contact vaginal tissues directly, sterilization requirements are eliminated, thereby reducing procedure time and complexity while maintaining infection prevention through alternative methods
Solution Approach 2:
The patent introduces an intermediary barrier system that prevents direct contact between instruments and vaginal tissues. This intermediary layer allows instruments to be used without sterilization while still preventing infection, thereby reducing procedure time and complexity
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
Reduces discomfort and improves access to the vaginal and cervical area with high-resolution imaging and tool use, maintaining consistent pressure without a vaginal seal, enabling efficient procedures like biopsies and surgeries.
Implementation Method 1
a first lumen which is in fluid communication with a pump and controller unit for introducing pressurized air into a vagina
Implementation Method 2
a second lumen in fluid communication with the pump and controller unit for measuring air pressure in the vagina
Data Source
AI summary
A speculum includes a speculum sheath formed with a first lumen which is in fluid communication with a pump and controller unit for introducing pressurized air into a vagina, a second lumen in fluid communication with the pump and controller unit for measuring air pressure in the vagina, and a third lumen in which is disposed a viewing device.