Suction Catheter Fixed Imaging Module
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Solution Overview
Problem
Existing endoscope-attached suction catheters require complex focusing operations due to varying distances between the optical system and the imaging fiber, making it difficult for caregivers or family members to properly remove tracheal secretions without damaging the mucosa.
Innovation Solution
The suction catheter design includes a fixed imaging module position relative to the imaging fiber, allowing for a constant distance, which eliminates the need for focusing and simplifies the attachment and detachment of the imaging unit, enabling easy operation and visualization during suctioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the imaging device is attached between the optical system and the end face of the imaging fiber, then the imaging unit can be replaced, but the distance variation requires focusing for each replacement
Solution Approach 1:
The patent pre-configures the imaging module with a fixed distance relationship to the imaging fiber end face during manufacturing. This preliminary action eliminates the need for focusing adjustments after replacement, as the optical path is pre-calibrated to the sensor position.
Solution Approach 2:
The patent introduces a fixed optical system structure that acts as an intermediary between the imaging fiber and the image sensor. This intermediary component maintains a constant optical path length, serving as a mediator that eliminates the need for repeated focusing operations when the imaging device is replaced.
2Adaptability or versatility
If the imaging unit is made detachable for easy replacement, then adaptability improves, but the attachment and detachment operation becomes more complex
Solution Approach 1:
The patent divides the endoscope into separable modules: a control unit and a detachable imaging unit. This segmentation allows the imaging unit to be easily attached and detached while maintaining simple connection structures through standardized interfaces.
Solution Approach 2:
The patent designs a universal connection interface that serves multiple functions: mechanical attachment, optical fiber alignment, and electrical connection. This multi-functional interface simplifies the attachment structure by consolidating multiple requirements into a single standardized connection mechanism.
3Ease of operation
If the distance between optical system and imaging fiber is fixed, then focusing is eliminated, but manufacturing precision requirements increase
Solution Approach 1:
The patent pre-determines and pre-configures the exact distance between the optical system and imaging fiber during the manufacturing process. This preliminary action establishes a fixed optical path length that eliminates the need for focusing adjustments, with the precision requirement being met during initial manufacturing rather than during operation.
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
This configuration allows for stable image capture and display, enabling operators to perform suctioning and removal of extraneous materials without complicated focusing operations, improving safety and efficiency.
Implementation Method 1
an imaging fiber that is arranged inside the catheter main body in a longitudinal direction thereof, passes through the control unit, has an end face that is exposed to an outer surface of the control unit, and propagates an image that is obtained at the operation portion
Data Source
AI summary
A suction catheter of the invention includes: a catheter main body that includes a suction passage along a longitudinal direction thereof; a control unit that is attached to an end portion of the catheter main body which is opposite to an operation portion; and an imaging unit that is attachable to and detachable from the control unit.