Endoscope Lens Coupler With Adjustable Focus and Sealed Distal Tip
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Solution Overview
Problem
Endoscopes face challenges in contamination risk due to difficult cleaning of small, complex components, particularly the elevator mechanism and lens focusing systems, which can lead to bacterial colonization and performance issues, and require manual adjustment for focal length changes, increasing procedure time and patient discomfort.
Innovation Solution
A coupler device with an actuator that adjusts the focal length of the optical lens automatically or manually, reducing contamination risk by sealing the scope and allowing for adjustable focus without manual movement, and enabling compact, maneuverable endoscopes with fewer lenses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional fixed lenses are used in endoscopes, then the device structure is simple, but the working distance is fixed and requires manual adjustment increasing procedure time
Solution Approach 1:
The patent applies dynamics by replacing fixed lenses with a variable focal length lens that can dynamically adjust its focusing properties during the procedure, eliminating the need for manual repositioning and refocusing operations
Solution Approach 2:
The patent changes the optical parameter (focal length) of the lens from a fixed value to a variable value, allowing the lens to adapt to different working distances without requiring physical movement of the endoscope
2Adaptability or versatility
If multiple fixed lenses are used to change working distance, then the focal length can be adjusted, but the endoscope becomes larger and less maneuverable
Solution Approach 1:
The patent merges multiple lens functions into a single variable focal length lens, combining what would have been separate optical elements into one integrated component that provides the same adaptability in a more compact form
Solution Approach 2:
Instead of using multiple lenses with different fixed focal lengths, the patent uses a single lens whose focal length parameter can be changed electronically, reducing the overall device volume while maintaining versatility
3Ease of manufacture
If reusable endoscopes are used, then cost is reduced, but contamination risk increases due to difficult cleaning of complex components
Solution Approach 1:
The patent extracts the elevator mechanism and other complex internal components from the distal end region, removing sources of contamination risk while maintaining the essential functionality of the endoscope
Solution Approach 2:
The patent segments the endoscope into modular components with simplified architecture, creating distinct functional zones that are easier to clean and sterilize, particularly by eliminating hard-to-reach areas where bacteria could colonize
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 coupler device minimizes infection risk by sealing and protecting the endoscope, enhances focus adjustment, and allows for more compact and maneuverable designs, reducing procedure time and patient discomfort.
Implementation Method 1
an actuator configured to alter a curvature or shape of the optical lens, thereby adjusting the focal length of the lens
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A coupler device is provided for covering and at least partially sealing a portion of the working end of an endoscope, and an actuator for providing energy to the endoscope to automatically and/or manually adjust the focal length of the optical lens. The coupler device protects the scope and its components to reduce the ingress of debris, fluid and other matter, thereby reducing infection risk. In addition, the coupler device provides a mechanism to provide adjustable focus and more viewing power from the lens, thereby minimizing manual movement of the endoscope during operation and allowing for the design of more compact and maneuverable endoscopes.