Conduit Electrode Structure for Hemostasis With Suction Visibility
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Solution Overview
Problem
Existing treatment tools face challenges in efficiently suctioning body fluids and effectively applying high-frequency current for hemostasis while minimizing tissue adhesion and thermal invasion.
Innovation Solution
The electrode with a conduit features a tubular portion with a first conduit along the longitudinal axis and a second conduit intersecting it, along with hemostatic surfaces for high-frequency current application, and a coating layer for insulation, enhancing suction efficiency and visibility while preventing tissue adhesion and thermal spread.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional electrode with suction function is used, then body fluid suction is achieved, but the hemostatic effectiveness and visibility of the hemostasis site are limited
Solution Approach 1:
The patent introduces a second conduit extending in a direction intersecting the longitudinal axis, creating a three-dimensional communication path between the suction lumen and the external environment. This dimensional change allows the electrode to simultaneously provide suction functionality and improved visibility of the hemostasis site through the opening formed by the intersection of conduits.
Solution Approach 2:
The electrode is divided into distinct functional segments: a tubular portion for insertion, a distal end portion with the opening for visibility, and separate conduits for suction and high-frequency current delivery. This segmentation allows each component to be optimized for its specific function while maintaining overall device coherence.
2Reliability
If high-frequency current is applied to stop bleeding, then hemostasis is achieved, but tissue adhesion and thermal invasion occur
Solution Approach 1:
A coating layer is introduced as an intermediary between the electrode and the biological tissue. This coating serves as a protective barrier that prevents direct contact and adhesion between the electrode surface and tissue, while still allowing the high-frequency current to pass through to achieve hemostasis. The coating thus mediates between the therapeutic function and the harmful effects.
Solution Approach 2:
The patent modifies the electrical parameters by introducing a coating layer with specific electrical properties that allow controlled current passage. The coating changes the electrical conductivity parameter at the interface, enabling effective current delivery for hemostasis while preventing direct tissue-electrode contact that would cause adhesion and thermal damage.
3Reliability
If the electrode closes the end portion to apply current, then hemostasis is achieved, but suction efficiency is reduced
Solution Approach 1:
The patent employs a nested structure where the second conduit is provided inside the distal end portion of the tubular electrode. The opening is formed by the intersection of the first conduit (extending along the longitudinal axis) and the second conduit (extending in an intersecting direction). This nesting allows both suction and hemostatic functions to coexist without interfering with each other, as the suction path remains open while the hemostatic current can be applied through the distal end portion.
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
Improves suction efficiency, enhances visibility of the hemostasis target site, and prevents unintended tissue adhesion and thermal invasion, providing effective hemostasis with improved convenience.
Implementation Method 1
an electrode that causes a high-frequency current to flow to a hemostasis target site
Implementation Method 2
a suction function of sucking up body fluid or the like
Data Source
AI summary
An electrode with a conduit includes: a tubular portion internally provided with a first conduit; a distal end portion provided at the distal end of the tubular portion; a second conduit that is provided inside the distal end portion, the second conduit being configured to communicate with the first conduit; an opening configured to communicate with the first conduit and the second conduit; a first hemostatic surface that has a flat surface extending from the distal end of the tubular portion in an extending direction of the second conduit, and serves as an electrode configured to cause a high-frequency current to flow through a biological tissue; and a second hemostatic surface that is connected to a distal end side of the first hemostatic surface and is provided at an end portion protruding toward a distal end side from the opening.