Endoscopic Control Wire Tensioning Mechanism for Precise Bending
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Solution Overview
Problem
Existing endoscopic devices face challenges in achieving precise bending of bending sections due to limitations in control wire tensioning mechanisms, which hinder precise control and accuracy during operation.
Innovation Solution
A control element with a retainer and control wire tensioning system, featuring a displacement force application device such as a control wheel or lever element, allows for fine adjustment and precise control of the control wire, enabling targeted bending of the bending section through simple and intuitive operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional control wire tensioning mechanism is used, then the device structure remains simple, but the bending precision of the bending section is insufficient
Solution Approach 1:
The control element is divided into distinct functional components: a retainer that holds the control wire, a control wire tensioning element that applies tension, and a displacement force application device that enables fine adjustment. This segmentation allows each component to be optimized for its specific function, improving bending precision while keeping the overall design manageable.
Solution Approach 2:
The control wire tensioning element acts as an intermediary between the displacement force application device and the control wire. It translates the displacement of the application device into controlled tension on the control wire, enabling precise bending control through a mechanical advantage relationship.
2Manufacturing precision
If the control wire tensioning mechanism is made more complex to achieve precise bending, then bending precision improves, but the ease of operation deteriorates
Solution Approach 1:
The displacement force application device provides dynamic, real-time adjustment of the control wire tension. The control element can be continuously adjusted during operation to achieve the desired bending precision without requiring complex discrete adjustment mechanisms, maintaining ease of operation.
3Measurement precision
If a displacement force application device is added for fine adjustment, then control precision improves, but the device complexity increases
Solution Approach 1:
The patent replaces complex electronic or automated control systems with a mechanically straightforward displacement force application device. The mechanical linkage directly translates user input into control wire tension adjustment, achieving high control precision through simple mechanical principles rather than complex systems.
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 precise and controlled bending of endoscopic devices by allowing for fine adjustment of the control wire tension, improving operational accuracy and ease of use, and can be applied to both flexible and rigid endoscopes.
Implementation Method 1
the inner thread of the control wheel has thread engagement with an outer thread of the control wire tensioning element such that the control wire tensioning element can be moved relative to the retainer
Implementation Method 2
Due to actuation of the control element, the control wire is tensioned, whereby the bending section is bent
Data Source
AI summary
The invention relates to a control element for an endoscopic device (A) with a retainer; at least one control wire, which can be moved back and forth in the longitudinal direction of the wire, for control purposes on the endoscopic device (A); a control wire tensioning element guided in the retainer, wherein the control wire is mounted in the control wire tensioning element; and a displacement force application device supported on the retainer, by means of the displacement force application device the control wire tensioning element can be moved relative to the retainer, in order to effect fine adjustment of the control wire.The invention further relates to a control element for an endoscopic device (A), having a housing element with a guide; at least one control wire for control purposes with the endoscopic device (A); a lever element, which can be displaced in the longitudinal direction of the housing element on the guide of the housing element, with the at least one control wire being anchored on the lever element. The anchoring location of the control wire in the lever element is eccentric to the displacement path of the lever element on the guide of the housing element.