Plasma Surgical Electrode Single-Tube Stem for Smooth Movement
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Solution Overview
Problem
Existing electroresection endoscopy instruments face issues such as electrode distortion, deformation, unsmooth movement, water leakage, and the risk of electric burns due to double steel tubes and connection to surgical instruments.
Innovation Solution
A plasma surgical electrode with a single-tube stem structure comprising a conductive inner layer, insulating inner layer, and conductive outer layer, along with an insulating outer layer, reduces distortion and deformation, and includes a reduced-diameter conductive outer layer with crimping and connecting tubes for versatility, and an insulating clamp for safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If double steel tubes are used for storing circuits separately, then electrical isolation is improved, but electrode distortion and deformation occur
Solution Approach 1:
The patent merges the two separate steel tubes into a single tube structure with concentric layers. The conductive inner layer and conductive outer layer are arranged concentrically within one tube, eliminating the mechanical interference between separate tubes while maintaining electrical isolation through the insulating inner layer.
Solution Approach 2:
The single tube is segmented into multiple functional layers: conductive inner layer, insulating inner layer, and conductive outer layer. This segmentation allows each layer to perform its specific function while maintaining overall structural integrity and preventing distortion.
2Reliability
If double steel tubes are used, then circuit storage is improved, but unsmooth movement occurs
Solution Approach 1:
By combining two separate tubes into one integrated single-tube structure, the patent eliminates the mechanical conflict between parallel tubes during movement. The concentric layer arrangement allows smooth insertion and retraction through the endoscope without the twisting and deformation caused by separate tubes.
3Reliability
If double steel tubes are used, then circuit isolation is improved, but water leakage occurs
Solution Approach 1:
The single-tube structure with concentric layers provides a more compact and sealed configuration compared to parallel double tubes. The integrated structure reduces gaps and interfaces where water could leak, while the insulating layer maintains electrical isolation.
4Ease of operation
If electrode is connected to surgical instrument, then loop formation is improved, but electric burn risk increases
Solution Approach 1:
The patent extracts the loop formation function from the surgical instrument connection and implements it within the electrode stem itself. The conductive outer layer forms the loop independently, eliminating the need for the surgical instrument to be charged and reducing electric burn risks to medical staff and patient tissues.
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
The single-tube stem design ensures smooth movement and reduces the risk of electric burns, water leakage, and improves versatility by allowing connection of different electrode heads, while maintaining safety and reducing assembly costs.
Implementation Method 1
the conductive inner layer is electrically connected to a working electrode of the electrode head and the electrode interface; and the conductive outer layer is electrically connected to a loop electrode of the electrode head and the electrode interface
Implementation Method 2
an insulating inner layer, and a conductive outer layer that are arranged in sequence from inside to outside
Data Source
AI summary
A plasma surgical electrode and instrument are provided. The plasma surgical electrode includes an electrode head, an electrode stem, and an electrode interface that are connected in sequence, where the electrode stem includes a conductive inner layer, an insulating inner layer, and a conductive outer layer that are arranged in sequence from inside to outside; the conductive inner layer is electrically connected to a working electrode of the electrode head and the electrode interface; and the conductive outer layer is electrically connected to a loop electrode of the electrode head and the electrode interface. The electrode stem is in a single-tube form, which is not easily twisted or deformed and moves smoothly with the endoscope during the surgical process, avoiding problems such as unevenness and bleeding during cutting.