Colon Linearizing Device with Segmented Elastic Drive
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Solution Overview
Problem
Inserting an endoscope into the non-fixed parts of the large intestine is challenging due to the movement of these parts, requiring a skilled technique that is difficult to learn and limiting its application in endoscopic robotic surgery, and existing self-propulsion methods face issues with device structure and pressure limitations.
Innovation Solution
A colon linearizing device installed on an endoscope, featuring a ring-shaped proximal and distal member with an elastic member, which performs translation and expansion motions to linearize the colon, utilizing a translation drive device and expansion drive device to facilitate insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a skilled insertion technique is used to linearize the colon, then endoscope insertion is successful, but the technique requires a long time for beginners to learn and is limited to remote control operation
Solution Approach 1:
The colon linearizing device performs self-propulsion and self-linearization functions automatically, eliminating the need for operator skill in manual manipulation. The device autonomously translates and expands within the colon to achieve linearization, making the procedure accessible to beginners without extensive training.
2Ease of operation
If self-propulsion methods are used to drive the device, then insertion is facilitated, but the device structure and volume hinder securing surgical tool channels and service channels
Solution Approach 1:
The device is divided into multiple segments including a proximal member, distal member, and intermediate sections. This segmentation allows the device to achieve self-propulsion through expansion while maintaining a compact overall structure that accommodates surgical tool channels and service channels within each segment.
Solution Approach 2:
The surgical tool channels and service channels are nested within the segmented structure of the device. The channels are integrated into the hollow spaces and structural elements of the proximal and distal members, allowing the device to maintain self-propulsion capability while accommodating multiple functional channels.
3Ease of operation
If attachment to the outer side of an endoscope is used, then self-propulsion is achieved, but the pressure used to operate the system exceeds the pressure normally allowed inside the large intestine
Solution Approach 1:
The device uses controlled pneumatic expansion through balloons or expandable elements within the segmented structure. This allows self-propulsion to be achieved through controlled pressure application to the colon wall, distributing the force over a larger area and maintaining pressure within safe physiological limits while still achieving effective propulsion.
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
Enables the insertion of an endoscope into the colon without requiring a skilled technique, allowing for efficient and safe navigation through the colon by linearizing it, thus simplifying endoscopic procedures.
Implementation Method 1
The elastic member may have an elastic restoring force that increases as the distal member approaches the proximal member.
Implementation Method 2
an expansion drive device to expand the distal member or the proximal member by supplying air pressure to the distal member or the proximal member
Data Source
AI summary
A colon linearizing device installed in an endoscope to linearize a colon by performing translation and expansion motions in the colon may include a ring-shaped proximal member installed to surround an outer circumferential surface of an insertion tube of an endoscope, a fixed end secured to the insertion tube, a ring-shaped distal member positioned between the proximal member and the fixed end and movably installed along a longitudinal direction of the insertion tube, and an elastic member connected between the fixed end and the distal member.