Closed-Loop Internal Cooling for Electrosurgical Electrodes
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Solution Overview
Problem
Existing electrosurgical apparatuses for surface tissue desiccation often obscure the surgical site due to the dispersion of cooling medium as steam, and require frequent suction and refilling, which hampers visibility and operational efficiency.
Innovation Solution
An internal cooling mechanism is introduced, utilizing closed-loop conduits within the electrosurgical handset to deliver and circulate a cooling medium to the electrodes, preventing fluid dispersion onto the surgical site and reducing the need for suction, with three types of cooling mechanisms: monopolar loop, bipolar loop, and bipolar isolated configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling medium is delivered to electrodes via open lumen system, then electrodes are cooled effectively, but cooling medium is dispensed onto surgical site obscuring visibility
Solution Approach 1:
The patent extracts the harmful dispersion of cooling medium from the surgical site by transitioning from an open lumen system to a closed-loop internal cooling system. The cooling medium is confined within insulated conduits that deliver coolant directly to electrode surfaces without releasing it onto the surgical field, thus eliminating the obscuration problem while maintaining effective electrode cooling.
Solution Approach 2:
The patent introduces insulated conduits as intermediary elements between the cooling medium source and the electrodes. These conduits act as mediators that transport cooling fluid internally without direct contact with the surgical site, preventing the cooling medium from being dispensed onto the tissue while still achieving the cooling function.
2Temperature
If cooling medium is dispensed onto electrodes, then electrodes remain cooled, but frequent suction and refilling are required
Solution Approach 1:
The patent implements a closed-loop cooling system where cooling medium continuously circulates through insulated conduits to electrodes and returns to the reservoir. This continuous circulation eliminates the need for frequent refilling and suction interruptions, maintaining uninterrupted cooling action and significantly improving operational efficiency.
Solution Approach 2:
The patent recovers the cooling medium by channeling it back through insulated conduits to the reservoir after it has cooled the electrodes. Instead of discarding the spent cooling fluid, the system recovers and recirculates it, eliminating the need for frequent refilling and reducing operational interruptions.
3Temperature
If cooling medium is delivered via open lumen system, then cooling function is achieved, but surgical site is obscured by steam and liquid
Solution Approach 1:
The patent extracts the harmful dispersion of cooling medium from the surgical environment by confining it within insulated conduits. The cooling medium is delivered internally to electrode surfaces without releasing steam or liquid onto the surgical site, thus eliminating the obscuration harmful factor while preserving the cooling function.
Solution Approach 2:
The patent uses insulated conduits as intermediary elements that separate the cooling medium from the surgical site. These conduits deliver cooling fluid internally, preventing direct contact between the cooling medium and the surgical field, thereby eliminating obscuration by steam and liquid while maintaining effective electrode cooling.
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 enhances surgical site visibility, reduces the need for suction, and minimizes the frequency of cooling medium refilling by maintaining electrode temperature through internal fluid circulation, thereby improving the efficiency and effectiveness of electrosurgical procedures.
Implementation Method 1
delivering a cooling medium via one or more conduits or lumens to at least one electrode at a distal end of an electrosurgical handset
Implementation Method 2
the portion of the cooling medium dispensed or discharged onto the electrodes is converted to a gas, such as steam
Data Source
AI summary
Three types of internal cooling mechanisms for cooling one or more electrodes of a surface tissue desiccation device are described. Each cooling mechanism is closed-ended thereby preventing the cooling fluid from being dispensed from an electrosurgical handset of the device and onto the surgical site. The cooling fluid re-circulates in a conduit or lumen assembly between a fluid source, such as a fluid reservoir, and the electrode(s) at a distal end of the electrosurgical handset. A method is also provided for performing an electrosurgical procedure using the surface tissue desiccation device. The method includes activating an energy source; causing one or more electrodes to heat tissue; and internally cooling at least a portion of the at least one electrode(s) via an internal cooling mechanism. The internal cooling mechanism keeps the electrode(s) in a cooled state during the electrosurgical procedure, such as surface tissue desiccation.