U-Shaped Bipolar Electrosurgical Electrode for Simultaneous Cutting and Sealing
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Solution Overview
Problem
Current electrosurgical devices require separate tools for cutting and fluid-assisted sealing of tissue, leading to delays and issues like tissue desiccation, sticking, and thermal damage, while lacking the ability to efficiently cut with reduced lateral thermal spread and fluid loss inhibition.
Innovation Solution
An electrosurgical device with bipolar and monopolar power outputs, featuring U-shaped electrodes and fluid outlets, allowing for simultaneous cutting and sealing with reduced thermal spread and fluid-assisted sealing to inhibit blood and fluid loss, using stainless steel wire electrodes for efficient heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If separate devices are used for cutting and fluid-assisted sealing, then each device can be optimized for its specific function, but surgical time increases due to switching between devices and tissue damage worsens due to desiccation and thermal spread
Solution Approach 1:
The patent combines cutting and sealing functions into a single electrosurgical device with multiple electrodes. The device includes a first electrode for fluid-assisted sealing and a second electrode for cutting, allowing both functions to be performed without switching devices. This merging eliminates surgical delays and enables coordinated application of fluid and energy to reduce thermal damage.
Solution Approach 2:
The electrosurgical device is designed with multi-functionality, capable of performing both fluid-assisted sealing and cutting operations. The device can switch between different electrode configurations and power delivery modes (monopolar and bipolar) to achieve different surgical outcomes with a single instrument, improving efficiency and reducing tissue exposure to damaging conditions.
2Ease of manufacture
If traditional electrosurgical devices are used for cutting, then cutting function is achieved, but lateral thermal spread damages adjacent tissue
Solution Approach 1:
The patent introduces electrically conductive fluid as an intermediary between the electrode and tissue during cutting operations. This fluid layer acts as a heat sink and thermal barrier, conducting heat away from the electrode-tissue interface and preventing excessive lateral thermal spread to adjacent tissue while still allowing effective cutting through controlled electrical energy delivery.
3Reliability
If fluid flow is increased to prevent tissue desiccation and sticking, then tissue sealing improves, but fluid loss and surgical site contamination increases
Solution Approach 1:
The device incorporates feedback control through its dual-electrode configuration and power delivery system. The first electrode delivers fluid-assisted sealing while the second electrode performs cutting, allowing the system to monitor tissue conditions and adjust fluid flow and energy delivery in real-time. This coordinated control prevents excessive fluid application while maintaining effective sealing and reducing desiccation.
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
Enables efficient tissue cutting and sealing with reduced lateral thermal damage, minimizing blood and fluid loss, and preventing undesirable effects like desiccation and sticking, while allowing for precise control over fluid flow and RF power settings.
Implementation Method 1
bipolar electrodes, configured to receive the bipolar power output from the radio-frequency power source treat tissue
Implementation Method 2
At least one of the electrode tips may be configured as a monopolar electrode, configured to receive the monopolar power output from the radio-frequency power source and provide an electrosurgical cutting edge
Data Source
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AI summary
The invention provides an electrosurgical device and methods of use thereof. In one embodiment, the device may comprise a handle, a shaft distal to the handle, a first electrode tip and a second electrode tip adjacent a distal end of the shaft, with the first electrode tip spaced from the second electrode tip and wherein the first electrode tip comprises a first U-shaped electrode and the second electrode tip comprises a second U-shaped electrode, and at least one fluid outlet. In another embodiment, the device may comprise a handle, a shaft distal to the handle, and a first electrode and a second electrode adjacent a distal end of the shaft with the first electrode coplanar with the second electrode and comprising a wire electrode having a U-shape which surrounds a perimeter of the second electrode and is spaced from the second electrode by an aperture.