Endoscopic Scissors With Monopolar Electrode for Cutting and Coagulation
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Solution Overview
Problem
Conventional endoscope forceps with monopolar electrodes require frequent replacement during extensive tissue cutting and struggle with fibrotic tissues, leading to increased labor and time in medical procedures.
Innovation Solution
Scissors for an endoscope integrating a scissor mechanism with a monopolar electrode on one scissor member, allowing for simultaneous cutting and coagulation without replacement, with the electrode aligned to maintain stability during rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional forceps with monopolar electrode are used for tissue cutting, then bleeding can be stopped by coagulation, but frequent replacement is required during extensive cutting and for fibrotic tissue
Solution Approach 1:
The patent combines a scissor mechanism and a monopolar electrode into a single integrated instrument. The scissor members are configured such that one member includes a monopolar electrode on its distal end, allowing both mechanical cutting and electrocoagulation functions to be performed by one device without replacement
Solution Approach 2:
The instrument is designed to perform multiple functions: mechanical cutting via the scissor mechanism and electrocoagulation via the monopolar electrode. This multi-functional design eliminates the need to switch between different instruments for different treatment modalities
2Reliability
If monopolar electrode is used for cutting fibrotic tissue, then coagulation can be achieved, but cutting performance is insufficient due to low moisture content
Solution Approach 1:
The instrument merges mechanical cutting capability with electrocoagulation capability in a single device. The scissor mechanism provides reliable mechanical cutting for fibrotic tissue, while the monopolar electrode provides coagulation when needed, allowing the operator to switch between cutting modes without changing instruments
3Productivity
If extensive and quick tissue cutting is performed, then treatment speed is improved, but instrument replacement is required frequently
Solution Approach 1:
The integrated instrument provides both cutting and coagulation functions, allowing continuous operation during extensive tissue resection without interrupting the procedure to replace instruments. The operator can perform rapid sequential cutting and coagulation with a single device
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 quick and extensive cutting of tissues, including fibrotic ones, while stabilizing treatment by preventing electrode displacement, reducing labor and time in medical procedures.
Implementation Method 1
a monopolar electrode which generates a high-frequency current
Data Source
AI summary
Provided are Scissors for an endoscope that include a scissor mechanism part that includes a pair of scissor members connected to each other by a first spindle, and cuts a target site by opening and closing of the one scissor member and the other scissor member with the first spindle as a fulcrum; and an electrode part in which a monopolar electrode (electrode part) is formed on a distal end part of the one scissor member of the one scissor member and the other scissor member. An operator can quickly and extensively cut the target site by using the scissor mechanism part by the pair of scissor members, or can stop bleeding at the target site or cut the target site by using the electrode part.