Endoscope Working Channel Motion Transfer for Single-Handed Use
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing endoscopes face challenges in efficiently utilizing space within the insertion tube for both fluid extraction/infusion and tool operation, often requiring additional channels that compromise sealing and ease of use, especially for single-handed operation and precise tool manipulation.
Innovation Solution
The endoscope integrates motion transfer members within the same working channel used for fluid extraction/infusion, employing a tubular design with a bifurcated section and kinematic chains that allow tool operation without breaching the working channel integrity, enabling single-handed use and improved space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate channel is used for tool operation, then tool functionality is improved, but device complexity and space utilization deteriorate
Solution Approach 1:
The patent merges the tool operation channel with the fluid extraction/infusion channel by integrating motion transfer members within the working channel. The tool is advanced and retracted through the same channel used for fluid flow, eliminating the need for a separate tool channel and reducing overall device complexity while maintaining full tool functionality
Solution Approach 2:
The working channel is designed to serve multiple functions: it acts as both a fluid extraction/infusion channel and a tool operation channel. The motion transfer members enable the channel to accommodate tool advancement, retraction, and actuation while simultaneously allowing fluid flow, making the channel universal for both purposes
2Volume of moving object
If motion transfer members are integrated within the working channel, then space utilization is improved, but sealing integrity may deteriorate
Solution Approach 1:
The patent employs a flexible membrane or diaphragm as part of the sealing structure within the working channel. This flexible element can deform to accommodate the motion transfer members while maintaining sealing integrity, allowing tool movement and fluid flow without compromising the seal between different channel sections
Solution Approach 2:
The motion transfer members are nested within the working channel in a compact arrangement. The tool, motion transfer members, and sealing structures are concentrically arranged, with each component nested within the previous one, maximizing space utilization while maintaining proper sealing through the nested configuration
3Ease of operation
If single-handed operation is enabled, then ease of operation is improved, but control precision may deteriorate
Solution Approach 1:
The endoscope is designed with self-aligning control mechanisms where the operating members automatically return to their neutral positions through spring biasing or elastic deformation. This self-service feature allows single-handed operation without requiring complex active control systems, maintaining precision while simplifying the control mechanism
Solution Approach 2:
The control mechanism incorporates dynamic elements such as spring-loaded operating members and flexible couplings that adapt to the operator's input. These dynamic components provide tactile feedback and automatic resistance modulation, enabling precise control with minimal effort for single-handed operation
4Reliability
If the working channel remains sealed, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent extracts the tool from the sealed working channel only when needed for operation. The tool is advanced through the sealed channel to the treatment site, performs its function, and is then retracted. The channel remains sealed throughout the procedure, with the tool temporarily exiting the sealed environment only at the distal end for its intended purpose
Solution Approach 2:
The working channel acts as an intermediary sealed pathway that allows the tool to be transported from the proximal to distal end without breaching the seal. The motion transfer members serve as intermediaries that transfer actuation forces through the sealed channel wall or through sealed interfaces, enabling tool operation while maintaining channel integrity
Data Source
AI summary
An endoscope (1) having a handle with a handle housing (2) and an insertion tube (3) extending from said handle (2) and terminating in a tip part (4) at the distal end of the endoscope (1). A working channel and having a distal end and a proximal end extends within the insertion tube (3). The endoscope further comprises motion transfer means (53, 54) extending within said working channel and adapted to operate a tool (55) at the exit port of the tip part (4) in response to the activation of an operating member (22). The working channel comprises a generally tubular working channel wall. The distal working channel end comprises an exit port at the tip part (4) at the distal end of the endoscope (1). The proximal working channel end comprises an end sealing means accommodated within the handle housing (2). An entry port is provided between the distal working channel end and the proximal working channel end.