Electrosurgical Effector Heat Dissipation via Tubular Body
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Solution Overview
Problem
Existing electrosurgical instruments face challenges in thermally controlling return electrodes, leading to overheating, increased procedure time, tissue damage, and unintended effects, as current solutions like larger electrodes or individual cooling systems increase instrument size, weight, and cost.
Innovation Solution
A tubular effector with a plug at the distal end, an active electrode, and vapor-deposited return electrodes on an insulator, where the body dissipates heat from the distal end to the proximal end, allowing for effective thermal management without increasing the instrument's size or weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the size of return electrodes is increased to dissipate heat, then heat dissipation capability is improved, but the section size and weight of the effector increase
Solution Approach 1:
The patent introduces a separate heat dissipation structure that acts as an intermediary between the return electrode and the effector body. This heat dissipation structure is selectively engageable with the effector and provides thermal management without being permanently integrated, thus avoiding permanent weight and size increases while still enabling effective heat dissipation when needed.
2Temperature
If individual fluid cooling, heat pipes, and/or heat tubes are incorporated for each return electrode, then thermal control is improved, but the size, weight, and cost of the effector increase
Solution Approach 1:
The patent employs a separate, selectively engageable heat dissipation structure rather than permanently integrating complex cooling systems into the effector. This intermediary approach provides thermal control capability only when engaged, reducing the baseline complexity, size, and cost of the effector while maintaining the option for active thermal management during procedures.
Solution Approach 2:
The patent divides the thermal management function into a separate, modular heat dissipation structure that can be independently engaged or disengaged from the effector. This segmentation allows the effector to maintain simplicity while providing thermal control capability through the separate component, avoiding the need to integrate complex cooling systems into the main effector structure.
3Reliability
If larger return electrodes are used to dissipate heat, then overheating is prevented, but the instrument size increases which is less than ideal for minimally invasive procedures
Solution Approach 1:
The patent introduces a separate heat dissipation structure that acts as an intermediary thermal management component. This structure can be selectively engaged with the effector to provide overheating prevention without permanently increasing the instrument's size, allowing the instrument to maintain a compact form factor suitable for minimally invasive procedures while still providing thermal protection when needed.
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
This solution effectively cools the return electrodes, preventing overheating and tissue damage, while maintaining a compact and cost-effective instrument design suitable for minimally invasive procedures.
Implementation Method 1
The body dissipates heat generated by the one or more return electrodes from the distal end of the body to the proximal end of the body
Implementation Method 2
The one or more return electrodes are vapor deposited onto the insulator
Data Source
AI summary
An effector includes a tubular body having a proximal end and a distal end. The effector holds a plug or closure at the distal end of the tubular body; an active electrode at the distal end of the body; an insulator on the body; and one or more return electrodes on the insulator. The body dissipates heat generated by the one or more return electrodes from the distal end of the body to the proximal end of the body.