Medical Valve Optical Indicator for Position Clarity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing medical valves, or stopcocks, face challenges in providing clear and unambiguous indication of valve positions, leading to potential administration errors, especially in limited space and requiring extensive redesign for improved indication systems.
Innovation Solution
A medical valve design incorporating a rotatable optical element that reflects indicator images along the housing, allowing users to visually identify valve positions through an optical system using ambient light or a separate light source, enabling clear and concise indication without bulky external parts, suitable for small medical devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If an elongated handle is used as a physical indicator, then the valve structure is simple, but the indication clarity is insufficient and may cause administration errors
Solution Approach 1:
The patent uses an optical element to create a reflected image (copy) of the indicator means on the handle. This optical copy provides clear visual indication of valve position without requiring complex mechanical indicators. The reflection principle allows the indicator to be seen clearly from above while keeping the overall structure simple.
Solution Approach 2:
The patent replaces traditional mechanical indication systems with an optical system. Instead of relying on the physical shape and position of the handle itself for indication, the system uses light reflection to project visual indicators, thereby improving indication clarity while maintaining mechanical simplicity.
2Loss of information
If a large radial extension is used for indication, then the indication is clear, but the valve becomes bulky and difficult to disinfect
Solution Approach 1:
The patent moves the indication from a radial dimension (extending outward from the center) to a vertical dimension (above the handle). By reflecting light upward onto the top surface of the handle, the system provides clear indication without increasing the radial footprint or overall volume of the valve body.
Solution Approach 2:
The optical element creates a reflected image of the indicator on the handle surface, allowing clear visual indication within the existing valve volume. This eliminates the need for large radial extensions while maintaining indication visibility.
3Loss of information
If multiple movable external parts are added for indication, then the indication functionality is enhanced, but the reliability decreases due to potential breakage and jamming
Solution Approach 1:
The patent extracts the indication function from separate movable external parts and integrates it into the existing handle structure through an optical element. The indicator means and optical element work together with the handle's existing movement, eliminating additional movable parts that could break or jam.
Solution Approach 2:
The handle serves multiple functions: it controls valve operation and simultaneously displays position indication through the optical reflection. This multi-functionality eliminates the need for separate indication mechanisms, thereby improving reliability by reducing the number of components.
4Volume of moving object
If the valve is designed for small size, then it is suitable for medical use, but the available space for indication systems is limited
Solution Approach 1:
The patent utilizes the vertical dimension above the handle for indication purposes. By reflecting light upward onto the top surface of the handle, the system provides adequate indication space without increasing the horizontal footprint or overall volume of the valve.
Solution Approach 2:
The optical element creates a magnified reflected image of the indicator on the handle surface, allowing clear indication within limited space. This optical copying approach enables sufficient indication visibility without requiring additional physical space.
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 enhanced visibility and clarity of valve positions, reducing the risk of administration errors and allowing for integration into existing valve designs without significant redesign, while being cost-effective and easy to manufacture.
Implementation Method 1
a rotatable optical element which reflects indicator images along the housing
Data Source
Figure 1a~1b
Figure 1c~1d
Figure 1e~1h
AI summary
A medical valve (100) for use in administration of fluids, such as drug fluids, comprises a housing(200), and a valve member(300)which is rotatably supported in the housing for rotation between a plurality of valve positions about a rotational axis(10). The housing(200)is provided with an indicator means(500) and the rotatable valve member (300) is provided with an optical element(400)which is arranged to rotate together with the valve member(300)and which is arranged to reflect images of said indicator means(500)in said plurality of valve positions, each reflected image being visible to a user and being associated with a corresponding valve position.