Insulative Jaw Electrodes for Bipolar Forceps Short Circuit Prevention
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Solution Overview
Problem
Existing high frequency treatment devices face challenges in efficiently gripping and pressing tissues for both cutting and coagulation, particularly in urgent medical situations, due to limitations in electrode design and functionality, which can lead to insufficient blood stanching and complex operation requirements.
Innovation Solution
A high frequency treatment device featuring a bipolar forceps with a pair of jaws that function as electrodes along their entire length, equipped with a link mechanism and insulative coatings to prevent short circuits, allowing for easy gripping and pressing operations while maintaining effective current flow through the tissue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If insulators are placed on gripper distal ends to prevent short circuits, then electrical safety is improved, but the number of components and device complexity increases
Solution Approach 1:
The jaw bodies are made of electrically insulative material, merging the structural function of the jaw with the electrical insulation function. This eliminates the need for separate insulator components while maintaining electrical safety between the paired jaws during closed position.
Solution Approach 2:
The insulative jaw bodies serve multiple functions: providing structural support for gripping, preventing electrical short circuits between jaws, and maintaining electrical isolation during operation. This multi-functionality reduces the overall component count while improving reliability.
2Reliability
If electrodes are limited to specific positions on the gripper, then current flow control is improved, but the ease of operation deteriorates due to precise positioning requirements
Solution Approach 1:
The electrode function is segmented and distributed along the entire longitudinal extent of each insulative jaw body. This segmentation allows current flow through multiple points along the jaw, providing reliable electrical contact while eliminating the need for precise positioning of a single electrode point.
Solution Approach 2:
The electrode function extends from a point contact in conventional designs to a linear distribution along the jaw length. This dimensional change from point to line contact provides multiple current flow paths, improving reliability while simplifying operational requirements.
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 device enables efficient tissue gripping, cutting, and coagulation with reduced risk of short circuits, allowing for versatile blood stanching operations without the need for precise positioning of gripping surfaces, thus simplifying urgent medical treatments.
Implementation Method 1
linking the pair of jaws to a tip of the insertion member in a condition in which an electrical insulation between the jaws is kept
Implementation Method 2
applying a high frequency (radio-frequency) voltage to the jaws via the link member to cause a high frequency current to flow through the jaws
Data Source
AI summary
A high frequency treatment device is provided for high-frequency medical treatments including blood stanching. The device comprises an insertion member and a pair of jaws each representing a longitudinal direction, taking on an electrode function along an entire longitudinal region of each jaw, and having a gripping surface. In the device, a link member holds the jaws to be opened and closed in a direction allowing their gripping surfaces to be opposed to each other and links the jaws to a tip of the insertion member to keep electrical insulation between the jaws. An electrical short circuit between the jaws is prevented even when the jaws are mutually closed. A power line applies a high frequency voltage to the jaws via the link member to cause a high frequency current to flow through the jaws. An operation wire transmits open/close movements to the jaws via the link member.