Luminal Electrosurgery System with Distal Return Electrode
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Solution Overview
Problem
Conventional electrosurgical devices face limitations in precision and safety, particularly in reaching difficult body areas and performing endoscopic procedures, as they often require high voltages and can cause unintended tissue damage due to the distance energy travels between electrodes, and there is a need for a hybrid solution that combines the cutting power of monopolar instruments with the safety of bipolar instruments.
Innovation Solution
A surgical system with an elongate tubular body and a working space expanding system that moves between non-expanded and expanded positions, featuring an active electrode and strategically positioned return electrodes on the outer surface, allowing for localized energy delivery within a body lumen, reducing the risk of thermal damage and improving precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If monopolar electrosurgery is used to achieve precise cutting, then cutting precision is improved, but the risk of accidental injury to patient increases due to energy traveling through the body
Solution Approach 1:
The invention extracts the return electrode function from the external dispersive electrode and relocates it to the distal end of the endoscope within the body lumen. This allows the active and return electrodes to be positioned close together at the treatment site, confining the electrical current path to a localized area and preventing energy from traveling through the patient's body, thereby maintaining cutting precision while eliminating the risk of accidental injury.
Solution Approach 2:
The endoscope acts as an intermediary device that brings both the active electrode (surgical instrument) and the return electrode to the treatment site within the body lumen. This intermediary structure enables localized electrosurgery by mediating the positioning of electrodes in proximity to each other at the distal end, confining the electrical circuit to a small region and preventing widespread energy dispersion.
2Object-affected harmful factors
If bipolar electrosurgery is used to reduce voltage and improve safety, then patient safety is improved, but cutting power is reduced compared to monopolar instruments
Solution Approach 1:
The invention applies local quality by concentrating both electrodes at the distal end of the endoscope, creating a localized electrosurgical field. This allows the system to use lower voltages similar to bipolar instruments for safety, while maintaining high cutting power at the treatment site through precise localization of the electrical circuit, avoiding lateral thermal spread and improving both safety and cutting effectiveness.
3Power
If conventional electrosurgical devices are used to achieve high cutting power, then cutting effectiveness is improved, but device profile becomes large and difficult to insert into body passages
Solution Approach 1:
The invention uses the nested doll principle by placing the active electrode (surgical instrument) within the working channel of the endoscope, and positioning the return electrode on the outer surface of the endoscope at the distal end. This nested configuration allows both electrodes to be integrated into a compact, slender device profile that can be easily inserted into body passages while maintaining the ability to deliver high cutting power at the treatment site.
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 system enables efficient and precise electrosurgical procedures by delivering energy directly to the target tissue with reduced risk of collateral damage, achieving similar cutting power to monopolar instruments while minimizing voltage and thermal spread, thus enhancing safety and control.
Implementation Method 1
Electrosurgery involves the application of energy to biological tissue to cut, ablate, cauterize, coagulate, desiccate, and/or fulgurate tissue. Electrosurgery may use various types of high-frequency electrical energy to directly heat the tissue.
Data Source
AI summary
The present disclosure relates generally to the field of medical devices and treating tissues within body passages. In particular, the present disclosure relates to electrosurgical devices, systems, and methods for providing treatment of tissue.