Endoscope Transmission Mechanism With Coil Spring Tension Adjustment
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Solution Overview
Problem
Existing transmission mechanisms for raising stands in endoscope systems struggle to efficiently raise thick or hard insert objects, requiring excessive force and leading to mechanical stress due to the inability to adjust for varying object thickness and hardness.
Innovation Solution
A transmission mechanism incorporating a mobile member, an adjustment unit, a pulling and pressing member, and a regulation portion that adjusts tension and movement to optimize the raise angle and prevent excessive expansion of an expansion and contraction member, ensuring the raising stand maintains a necessary angle for treatment regardless of object thickness or hardness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thick or hard insert object is used, then the insert object can provide sufficient structural support, but the raising stand cannot raise to the maximum angle due to excessive force requirements
Solution Approach 1:
The patent applies a coil spring as an expansion and contraction member that dynamically adjusts the distance between the slider mechanism and the operation wire proximal end. This dynamic adjustment allows the system to adapt to varying force requirements when raising different types of insert objects, enabling the raising stand to achieve maximum angle regardless of whether a thick or hard insert object is used.
Solution Approach 2:
The coil spring changes the physical parameter of distance between mechanical components based on the force required. When a thick or hard insert object is used, the spring expands to maintain optimal tension and distance, allowing the raising mechanism to overcome the increased force requirements and achieve the necessary raising angle.
2Ease of operation
If much force is applied to raise the raising stand to maximum angle, then the raising stand can raise to maximum angle, but the transmission mechanism members are loaded by great force
Solution Approach 1:
The coil spring provides beforehand cushioning by being pre-installed in the transmission mechanism to absorb and distribute mechanical stress. When force is applied to raise the standing, the spring gradually expands to cushion the impact and distribute the load across a longer time period, preventing sudden high-stress peaks that could damage the transmission mechanism members.
Solution Approach 2:
The coil spring acts as an intermediary element between the operation wire and the slider mechanism. It mediates the force transmission by converting direct linear force into a controlled expansion motion, thereby reducing the mechanical stress on connected components while still achieving the required raising force.
3Device complexity
If the distance between slider mechanism and operation wire is fixed, then the transmission mechanism is simple, but it cannot adjust for varying insert object thickness and hardness
Solution Approach 1:
The patent transforms the fixed distance structure into a dynamic one by incorporating a coil spring that can expand and contract. This dynamic component automatically adjusts the distance between the slider mechanism and operation wire based on the force requirements of different insert objects, providing adaptability without requiring complex manual adjustment mechanisms.
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 mechanism ensures durability and maintains a suitable raise angle for treatments, reducing mechanical stress and allowing the use of both hard and soft insert objects without excessive force, thereby enhancing the operational reliability and versatility of the endoscope system.
Implementation Method 1
The expansion and contraction member is a coil spring which expands and contracts to adjust the distance between the slider mechanism and the proximal end portion of the operation wire
Data Source
AI summary
A transmission mechanism includes a mobile member, and an adjustment unit which is coupled to the mobile member and which changes in an adjustment amount in a longitudinal axis C direction. The transmission mechanism further includes a pulling and pressing member which is coupled to the raising stand and the adjustment unit. The transmission mechanism further includes a regulation portion which regulates the adjustment amount of the adjustment unit when a raising operation portion is operated and when a tension is applied to the adjustment unit.