Detachable Rotative Force Transmission Unit for Endoscope Insertion Body
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Solution Overview
Problem
Existing endoscope systems face challenges in efficiently transmitting rotational forces through narrow channels due to the limitations of existing rotative force transmission units, which often result in increased diameter at the proximal end and difficulties in attachment and detachment, affecting insertion and removal processes.
Innovation Solution
The design incorporates a rotative force transmission unit that can be inserted and removed from the insertion body, featuring a guide that allows the unit to be inclined and parallel to the central axis, enabling easy attachment and detachment of the rotation unit, and a channel that facilitates the transmission of rotational forces without increasing the outer diameter of the insertion body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rotative force transmission unit with a fixed drive shaft is used, then rotational force can be transmitted to the rotation gear, but the diameter at the proximal end increases and attachment/detachment becomes difficult
Solution Approach 1:
The drive shaft is designed to be movable rather than fixed, allowing it to extend during attachment and retraction during detachment. The distal end of the drive shaft can protrude from the proximal end of the insertion body when extended, enabling easy connection to the rotation gear, and retract when not in use to maintain a compact profile.
Solution Approach 2:
The drive shaft is stored within the insertion body when not in use, with its distal end retracted inside the proximal end of the insertion body. This nested configuration allows the transmission unit to be compact during storage while enabling extension when attachment is needed.
2Ease of operation
If the drive shaft is made extendable for easier attachment, then attachment and detachment become easier, but the structural complexity increases
Solution Approach 1:
The rotative force transmission unit is divided into separable components: the insertion body and the drive shaft. The drive shaft can be independently extended or retracted relative to the insertion body, allowing simplified attachment to the rotation gear without requiring complex integrated mechanisms.
3Stability of the object's composition
If a fixed rotative force transmission unit is used, then structural stability is maintained, but cleaning and maintenance become difficult
Solution Approach 1:
The rotative force transmission unit is designed as a separable module that can be detached from the insertion body. The drive shaft can be retracted into the insertion body or completely removed, enabling easy access for cleaning internal channels and maintenance of the rotation gear without disassembling the entire endoscope system.
Data Source
AI summary
An insertion body includes: a base arranged in the central axis; a rotating body provided on an outer periphery of the base and rotatable around the central axis; and a channel which includes a guide provided at the base such that the rotative force transmitting section is able to be guided between a first position in which the rotative force transmitting section in the longitudinal axis can be inclined from the central axis when the rotative force transmission unit is inserted from the outside to the inside and a second position in which the rotative force transmitting section in the longitudinal axis is parallel to the central axis and a rotative force can be transmitted to the rotating body from the rotative force transmitting section, and through which the rotative force transmission unit is inserted through the opening end and the guide.