Dual-Mode RF Plasma Electrode for Cutting and Hemostasis
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Solution Overview
Problem
Existing plasma surgical electrodes face challenges in navigating complex anatomical structures, achieving ideal surgical contact, and adapting energy output to specific surgical needs, limiting surgical efficiency and safety.
Innovation Solution
A radiofrequency (RF) plasma surgical electrode with a dual-mode design, featuring a first working electrode for small-area strong cutting and a second working electrode for large-area cutting and hemostasis, along with a bendable element and loop electrode, allowing for precise adjustment and integration of suction and hemostasis functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single plasma surgical electrode is used, then the device simplicity is maintained, but the surgical efficiency decreases due to inability to perform multiple operations modes
Solution Approach 1:
The surgical electrode is designed with multiple working electrodes (first working electrode, second working electrode, third working electrode) that can perform different surgical functions. The first working electrode performs small-area strong cutting, the second working electrode performs large-area cutting and hemostasis, and the third working electrode performs precise cutting near bone, allowing a single device to replace multiple specialized instruments
Solution Approach 2:
The electrode structure is divided into multiple independent working electrodes, each with specific geometric configurations optimized for different surgical tasks. The electrodes are spatially segmented within the cutter head, with each electrode positioned to access different tissue areas and perform specific functions, enabling multi-mode operation without requiring multiple separate instruments
2Adaptability or versatility
If traditional rigid plasma electrodes are used, then the manufacturing simplicity is maintained, but the adaptability to complex anatomical structures decreases
Solution Approach 1:
The electrode system incorporates a bendable element that allows the distal cutter head to be flexed and positioned at different angles. This dynamic positioning capability enables the rigid electrode structure to adapt to complex anatomical geometries and hard-to-reach surgical sites, while the bendable mechanism maintains manufacturing feasibility through standardized joint designs
3Measurement precision
If fixed energy output plasma electrodes are used, then the control system simplicity is maintained, but the surgical precision decreases in complex anatomical areas
Solution Approach 1:
Different working electrodes are designed with specific geometric configurations optimized for their intended functions. The first working electrode has a configuration optimized for small-area strong cutting, the second for large-area cutting and hemostasis, and the third for precise cutting near bone. This local optimization of electrode geometry enables precise energy delivery tailored to specific surgical requirements without requiring complex active control systems
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
Enhances surgical precision and efficiency by enabling flexible operation in complex cavities, reducing the need for instrument changes, and improving surgical outcomes through dual-mode cutting and hemostasis capabilities.
Implementation Method 1
an RF plasma system, the first working electrode and the loop electrode form a first discharge loop; and the RF plasma system generates a plasma sheath at the first working electrode
Implementation Method 2
The operating mechanism of the low-temperature plasma system is based on the advanced electrosurgical technology, which achieves precise surgical intervention with the assistance of physiological saline by precisely regulating the plasma energy transmission process
Implementation Method 3
The plasma vapor protective layer includes a large number of charged particles that move at high speeds. The kinetic energy of the charged particles is enhanced under the guidance of the electric field, thereby releasing sufficient energy to oxidize and decompose the molecular structure of the target tissue
Implementation Method 4
releasing sufficient energy to oxidize and decompose the molecular structure of the target tissue
Data Source
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AI summary
The present disclosure provides a radiofrequency (RF) plasma surgical electrode, and relates to the technical field of medical appliances. In order to solve the problem of an existing plasma surgical electrode that has a single surgical mode and cannot use a single electrode to achieve multiple modes of operation, thereby suffering from low surgical efficiency, the present disclosure proposes the following technical solution. The RF plasma surgical electrode includes a cable assembly, a proximal handle, a cutter shank and a distal cutter head that are connected in sequence, where the distal cutter head is internally provided with a first working electrode, a second working electrode and a bendable element; the bendable element and the cutter shank form a loop electrode; an RF plasma system, the first working electrode and the loop electrode form a first discharge loop to achieve a small-area strong cutting operation; and the RF plasma system, the second working electrode and the loop electrode form a second discharge loop to achieve a large-area cutting and hemostasis operation. The design solution of the present disclosure integrates multiple cutting functions and an innovative suck-while-coagulate function, significantly improving surgical efficiency, safety, and operational convenience, providing a more advanced and reliable tool for surgical operations.