Endoscope Instrument Integrating Dissection and Coagulation Electrodes
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Solution Overview
Problem
Current endoscopic submucosal dissection (ESD) procedures require alternating between dissection and coagulation treatments, which are time-consuming and labor-intensive due to the need for separate instruments and electrode sections, leading to increased procedural time and patient burden.
Innovation Solution
An endoscope instrument system with a flexible insertion section featuring a tubular first electrode section and a freely movable second electrode section, controlled by a conductive wire and external connecting section, allowing for rapid switching between dissection and coagulation modes without instrument exchange, using distinct electrode shapes and frequencies for each treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate instruments for dissection and coagulation are used, then appropriate electrode shapes and frequencies can be applied for each treatment, but procedural time increases and operator burden increases
Solution Approach 1:
The patent combines dissection and coagulation electrodes into a single integrated instrument. The distal end of the insulative insertion section is equipped with both a needle-shaped electrode for dissection and a sphere-shaped electrode for coagulation, allowing both treatments to be performed without instrument exchange.
Solution Approach 2:
The single instrument serves multiple functions by incorporating both dissection and coagulation electrodes. The control section can selectively apply current to either electrode based on the treatment required, making one instrument capable of performing both dissection and coagulation treatments.
2Reliability
If separate instruments for dissection and coagulation are used, then appropriate electrode shapes can be applied, but operator strain increases
Solution Approach 1:
The patent combines dissection and coagulation electrodes into a single integrated instrument. The distal end of the insulative insertion section is equipped with both a needle-shaped electrode for dissection and a sphere-shaped electrode for coagulation, allowing both treatments to be performed without instrument exchange.
Solution Approach 2:
The control section automatically selects which electrode to activate based on the treatment mode (dissection or coagulation), eliminating the need for the operator to manually switch instruments or electrodes. The system serves itself by automatically configuring the appropriate electrode for the required treatment.
3Adaptability or versatility
If instrument exchange is performed, then appropriate electrodes can be used for each treatment, but procedural time increases
Solution Approach 1:
The patent combines dissection and coagulation electrodes into a single integrated instrument. The distal end of the insulative insertion section is equipped with both a needle-shaped electrode for dissection and a sphere-shaped electrode for coagulation, allowing both treatments to be performed without instrument exchange.
Solution Approach 2:
The patent enables dynamic switching between dissection and coagulation modes during the procedure. The control section can selectively activate either the needle-shaped electrode or the sphere-shaped electrode based on the immediate treatment requirement, allowing flexible adaptation without physical instrument exchange.
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 rapid and safe performance of dissection and coagulation treatments by ensuring appropriate electrode shapes and frequencies are used separately, reducing procedural time and operator strain, and minimizing patient burden through efficient switching between treatments.
Implementation Method 1
applying high frequency current (current for dissection) to an electrode section such as a scalpel whose contact area with the living tissue is small
Implementation Method 2
by applying a current different from the one applied at the time of dissection (current for coagulation) to an electrode section with a shape such as of a sphere whose contact area with the living tissue is large
Data Source
AI summary
An instrument for an endoscope including a flexible insulative insertion section inserted in an endoscope channel, a tubular first electrode section arranged at a distal end of the insertion section with an insertion hole formed along the axis of the insertion section, a conductive electric wire inserted in the insertion section and movable forward/backward, a control section arranged on the proximal end side of the insertion section and controlling forward/backward movement of the electric wire along the axis, a rod-shaped second electrode section connected to a distal end of the electric wire and inserted so as to be movable forward/backward in the insertion hole, and an external connecting section electrically connected to a proximal end side of the electric wire and applying external currents with predetermined frequencies to the electric wire and the second electrode section.