Electrosurgical Handpiece Self-Contained Cooling System
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Solution Overview
Problem
Existing electrosurgical instruments with external cooling systems face issues of contamination and corrosion, and require additional external equipment, which complicates their use and storage.
Innovation Solution
An electrosurgical handpiece with a self-contained cooling system, where the pump and fluid supply lines are housed within the instrument, allowing for a compact design with an optional internal fluid reservoir that can be connected only when needed, minimizing external components and potential contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If external cooling systems are used, then cooling function is provided, but device complexity increases due to additional external equipment and coolant lines
Solution Approach 1:
The patent merges the cooling system components (pump, fluid supply lines, reservoir) with the handpiece housing, integrating them into a single unified unit. This eliminates the need for separate external cooling equipment and reduces overall system complexity while maintaining effective electrode temperature control during electrosurgical procedures
2Temperature
If external coolant lines are used, then cooling fluid can be supplied, but risk of contamination and corrosion increases
Solution Approach 1:
The patent extracts the cooling fluid reservoir and contains it entirely within the sealed handpiece housing, removing the need for external coolant lines that connect to the handpiece. This isolation prevents contamination of the cooling fluid and eliminates corrosion risks associated with external connections and fluid pathways
Solution Approach 2:
The handpiece contains its own self-contained cooling system with an integrated reservoir, pump, and fluid supply lines. The system serves itself by circulating cooling fluid internally without requiring external connections, thereby eliminating contamination and corrosion risks from external fluid pathways
3Ease of operation
If reservoir is connected to fluid supply lines during storage, then cooling system is ready for use, but shelf-life is reduced due to contamination and corrosion
Solution Approach 1:
The patent employs a movable reservoir that can be positioned in different states: disconnected during storage to preserve shelf-life, and connected during operation to enable cooling function. This dynamic configuration allows the system to adapt between storage and operational modes, maintaining both long shelf-life and operational readiness
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 provides effective cooling without external coolant lines, reducing the risk of contamination and corrosion, extending the instrument's shelf-life and enabling efficient coagulation with reduced electrode overheating, allowing for increased coagulative power and versatility.
Implementation Method 1
a pump for driving cooling fluid through the fluid supply lines
Implementation Method 2
fluid supply lines for directing a cooling fluid to and from the electrode assembly
Data Source
AI summary
An electrosurgical instrument includes a handpiece, an electrode assembly comprising one or more electrodes attached to the handpiece, and connection means for connecting the handpiece to an electrosurgical generator. The handpiece comprises a housing, fluid supply lines for directing a cooling fluid to and from the electrode assembly, and a pump for driving cooling fluid through the fluid supply lines. The handpiece may also include a fluid reservoir. The pump, the fluid supply lines, and the reservoir are all wholly contained within the housing.