Rotatable Endoscope Coupler Withstands Autoclave Sterilization
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Solution Overview
Problem
Conventional rotatable endoscope couplers deteriorate due to exposure to harsh autoclave environments, leading to operational difficulties and the need for frequent rebuilding or replacement, as they are not designed to withstand repeated steam sterilization.
Innovation Solution
A rotatable endoscope coupler incorporating ball bearings and a locking mechanism with annular members and radially inwardly directed slots, allowing for relative rotation and easy locking, which can withstand autoclave conditions and be easily disassembled for repair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional rotatable endoscope couplers are used, then rotation functionality is provided, but they deteriorate due to exposure to autoclave environments requiring frequent rebuilding or replacement
Solution Approach 1:
The coupler is designed as a disposable component that can withstand autoclave sterilization but is intended to be replaced rather than repaired. This resolves the contradiction by accepting limited service life in exchange for maintaining reliability through standardized, factory-assembled units that can be sterilized repeatedly without degradation of performance.
Solution Approach 2:
The invention changes the material parameters and structural design of the coupler to withstand autoclave conditions (high temperature, pressure, and moisture). By selecting materials and designs that are resistant to thermal and mechanical stress from sterilization cycles, the coupler maintains its functional parameters (rotation smoothness, locking reliability) throughout its service life.
2Adaptability or versatility
If the coupler allows rotation of the endoscope, then viewing flexibility is improved, but the structure becomes more complex
Solution Approach 1:
The invention uses a ball bearing mechanism where a spherical element rotates within a curved raceway. This spherical geometry provides smooth rotation with minimal friction while maintaining a compact structure. The curved surfaces naturally guide the rotation motion, reducing the need for additional control mechanisms and simplifying the overall structure.
Solution Approach 2:
The ball bearing acts as an intermediary element between the rotating endoscope interface and the fixed camera interface. This intermediate spherical component enables rotation while supporting the mechanical loads and maintaining proper alignment, thereby simplifying the connection design between the two components.
3Ease of repair
If the coupler is designed for easy assembly and disassembly, then maintenance becomes simpler, but structural integrity may be compromised
Solution Approach 1:
The coupler is divided into distinct modular segments (endoscope interface section, ball bearing section, camera interface section) that can be independently assembled and disassembled. Each segment is designed with standardized connection interfaces that maintain structural integrity while allowing easy separation for maintenance or replacement of individual components.
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 enables the coupler to maintain performance over an extended period, remaining functional and easy to operate even after repeated sterilization cycles, ensuring sterile conditions and reducing the need for frequent replacement.
Implementation Method 1
An annular ball bearing means is interposed between the first and second annular members to permit relative rotation therebetween
Data Source
AI summary
A rotatable endoscope coupler which enables an endoscope to be rotatably attached to a camera and selectively locked in place. The coupler enables single handed rotation of the scope while the camera remains in a fixed orientation. A plurality of ceramic ball bearings riding in a stainless steel race enable the coupler to be repeatedly autoclaved. A locking mechanism allows the scope and camera to be fixed from relative rotation.