Electrosurgical Jaw and Pipe Insulation to Prevent Short Circuits
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Solution Overview
Problem
Existing treatment tools using ultrasound vibration and high-frequency current for biological tissue treatment are prone to short circuits due to electrical contact with other conductive parts, leading to sparks.
Innovation Solution
The treatment tool incorporates an insulating material, such as polyimide or PEEK, to cover the outer surface of the outer pipe's distal end, preventing electrical contact and short circuits by creating an insulating barrier between the pipe and the treatment portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the treatment tool uses electrically conductive components for ultrasound transmission and high frequency current supply, then the treatment function is improved, but the risk of short circuits and sparks increases
Solution Approach 1:
An electrically insulating tube is introduced as an intermediary component between the electrically conductive outer pipe and the treatment portion. This insulating tube prevents direct electrical contact while allowing the treatment tool to maintain its conductive components for ultrasound and high frequency current supply, thus resolving the contradiction between treatment function and short circuit risk
Solution Approach 2:
The treatment tool is divided into distinct electrically isolated segments: the outer pipe with conductive path, the insulating tube barrier, and the treatment portion with treatment electrode. This segmentation allows each component to perform its electrical function independently without causing short circuits or sparks
2Reliability
If electrically conductive portions are exposed, then electrical connection is maintained, but short circuits occur due to contact with other conductive parts
Solution Approach 1:
The insulating tube serves as a protective intermediary that covers the outer surface of the outer pipe at the distal end, preventing electrical contact between conductive portions and other conductive parts while maintaining the integrity of the electrical connection path within the insulated structure
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
Prevents short circuits and sparks by insulating the electrical connection between the outer pipe and treatment portion, ensuring safe and reliable operation.
Implementation Method 1
a treatment portion provided at a distal end of the vibration transmission portion, which supplies a high frequency current to the treatment target and supplies ultrasound vibration to the treatment target
Implementation Method 2
a treatment portion provided at a distal end of the vibration transmission portion, which supplies a high frequency current to the treatment target
Data Source
AI summary
A treatment tool includes: a vibration transmission portion having a distal end provided with a treatment portion that functions as a first electrode supplying a high frequency current to a biological tissue; a jaw configured to be opened and closed with respect to the treatment portion, the jaw functioning as a second electrode supplying the high frequency current to the biological tissue; a pipe through which the vibration transmission portion is inserted with the treatment portion protruding from a distal end of the pipe, the pipe including an electrically conductive path to the second electrode; and a support provided on an inner surface of an end portion of the pipe on a distal end side, the support being configured to cover an outer surface of the end portion of the pipe on the distal end side and support the vibration transmission portion.