Articulating Endoscopic Instrument Single Drive Mechanism
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Solution Overview
Problem
Existing endoscopic instruments are mechanically complex, requiring two drives for articulation and tool operation, making them difficult to use in one-handed operations and increasing production costs and complexity, which complicates cleaning and allows for potential contamination.
Innovation Solution
A control element connects the first section and tool, allowing simultaneous articulation and tool movement between open and closed positions with a single drive, reducing component count and mechanical complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two separate drives are used for articulation and tool operation, then both functions can be performed, but device complexity increases and one-handed operation becomes difficult
Solution Approach 1:
The patent combines two separate drives (for articulation and tool operation) into a single integrated drive mechanism. The actuating element is connected to both the articulation joint and the tool, so that a single actuation simultaneously controls both the articulation of the shaft section and the opening/closing of the tool, enabling one-handed operation while reducing mechanical complexity
Solution Approach 2:
The single actuating element serves multiple functions: it controls both the articulation of the second shaft section and the opening/closing movement of the tool. This multi-functional design allows one hand to operate the instrument while the other hand can hold the endoscope, improving ease of operation
2Ease of manufacture
If two separate drives are used for articulation and tool operation, then both functions can be performed, but production costs and manufacturing complexity increase
Solution Approach 1:
By merging two separate drive mechanisms into one integrated drive system, the patent reduces the number of components that need to be manufactured and assembled. This simplification directly lowers production costs and makes manufacturing easier, while still achieving both articulation and tool operation functions
3Ease of repair
If two separate drives are used for articulation and tool operation, then both functions can be performed, but cleaning becomes difficult and contamination risk increases
Solution Approach 1:
The integrated drive system reduces the number of separate mechanical components and interfaces that would otherwise be difficult to access for cleaning. With fewer drives and connections, there are fewer crevices and joints where contaminants can accumulate, making the instrument easier to clean and sterilize between uses
Data Source
AI summary
An endoscopic instrument comprises a shaft, comprising a proximal end and a distal end. A grip comprising a handle is arranged at said proximal end of said shaft and a tool having at least an open and a closed position is arranged at said distal end of said shaft. Said shaft comprises at least two sections, a first section and a second section, which can be articulated with respect to said first section. Said second section comprises said tool. Said instrument further comprises an actuating element, by means of which said handle is in operative connection with said second section and with which an articulation of said second section can be initiated. Said first section or said actuating element and said tool are connected by a control element, by means of which said tool can be moved back and forth between said closed position and said open position in the course of an articulation of said second section, such that both the articulation of said second section and an opening/closing of said tool can be accomplished by the movement of said actuating element.