Radio Frequency Ablation Device With Expandable Electrode Section
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Solution Overview
Problem
Current radio frequency ablation methods for nerve ablation face challenges such as inefficiency and complications due to heat loss and blood flow interference, leading to suboptimal treatment efficacy and increased vascular wall damage.
Innovation Solution
A radio frequency ablation device with a cable-type ablation tube featuring memory alloy wires and a thermocouple design, integrated with a control handle and electrode section, allows for real-time impedance and temperature monitoring, enabling precise nerve ablation by minimizing energy loss and vascular wall damage through a wall-penetrating section that directly targets perivascular autonomic nerves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radio frequency energy is delivered through conventional catheter probes, then treatment can be performed on focal tissue, but heat loss and blood flow interference reduce treatment efficacy
Solution Approach 1:
The catheter probe is segmented into multiple functional sections: an expandable radiation section with multiple radiation sources, a body section, and a handle section. This segmentation allows the radiation section to be positioned directly at the target site while keeping the control mechanisms separate, reducing heat loss through focused energy delivery.
Solution Approach 2:
The radiation section is designed to expand from a compressed state to a radially extended state, changing the dimensional configuration of energy delivery. This expansion allows the radiation sources to be positioned in multiple directions around the target tissue, improving energy coupling and reducing heat loss through better spatial distribution.
2Ease of operation
If conventional catheter probes are used for nerve ablation, then minimally invasive treatment is achieved, but vascular wall damage increases due to energy loss
Solution Approach 1:
The catheter probe separates the radiation generation (handle section) from the radiation delivery (radiation section), allowing the thin-walled radiation section to be inserted minimally invasively while the heavier control components remain outside the body, reducing vascular wall damage.
Solution Approach 2:
The patent converts the potential harm of heat loss into beneficial localized heating by using the expandable radiation section to concentrate energy precisely where needed, transforming energy that would otherwise be lost into effective therapeutic heating of the target tissue while sparing surrounding vascular structures.
3Manufacturing precision
If radio frequency energy is delivered through conventional probes, then treatment can be performed, but treatment precision is reduced due to energy dispersion
Solution Approach 1:
The radiation section is divided into multiple independent radiation sources (first, second, third, and fourth radiation sources) arranged in distinct groups. This segmentation allows precise control of energy delivery to different quadrants of the target tissue, improving treatment precision while reducing overall energy dispersion through targeted localization.
Solution Approach 2:
Different sections of the radiation section have different functional qualities: the first and second radiation sources target one quadrant while the third and fourth sources target another quadrant. This local differentiation of energy delivery quality allows precise treatment of specific tissue regions while minimizing energy dispersion to areas that do not require treatment.
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 solution enhances treatment precision and reduces vascular wall damage by efficiently delivering energy directly to the target nerves, improving the effectiveness of nerve ablation while minimizing complications.
Implementation Method 1
the tube body comprises multiple groups of memory alloy wires (302) and metal wires (301) that are insulated from each other by a cable cladding layer, one end of the memory alloy wire (302) manufactured into a memory alloy support, the middle section of the memory alloy support is exposed to form a conductive section (303), wherein the memory alloy support deforms under an effect of an external force, and restores after the external force disappears
Implementation Method 2
one section of the metal wire (301) exposed and wound around the conductive section (303) to form a thermocouple
Implementation Method 3
a radio frequency ablation device comprising a cable-type radio frequency ablation tube... an electrode section... wherein the memory alloy support deforms under an effect of an external force, and restores after the external force disappears
Data Source
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AI summary
A radio frequency ablation device, comprising a radio frequency ablation tube (10), a control handle (20) and a temperature-controlling radio frequency instrument (35). The middle section of the radio frequency ablation tube (10) carries a strip-shaped connecting electrode; a radio frequency electrode (12) is formed at the distal end of the radio frequency ablation tube (10); the radio frequency electrode (12) is connected to the control handle (20) via the strip-shaped connecting electrode. The control handle (20) comprises a control guiding control handle for controlling the degree of curvature of the distal end of the radio frequency ablation tube (10), and a tube electrode control handle (23) and a tube electrode auxiliary control handle (24) for controlling the degree of opening of the radio frequency electrode (12). The temperature-controlling radio frequency instrument (35) comprises a central processing and control module (1); a radio frequency releasing module (2), a impedance measuring module (3), a temperature monitoring module (4) and an alarm and automatic storage module (5) respectively connected to the central processing and control module (1). An integrated interface (50) is disposed at the rear of the control handle (20), and the temperature-controlling radio frequency instrument (35) is connected to the integrated interface (50) disposed on the control handle (20) via an integrated cable (34). And a radio frequency electrode (12) used in the radio frequency ablation device, a temperature-controlling radio frequency instrument (35), a radio frequency ablation tube (10) and a guide tube (16) are also provided.