Electrosurgical Wand Fluid Control via Orientation Sensing
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Solution Overview
Problem
In electrosurgical procedures, especially dry field procedures, excess saline can migrate and cause unintended electrical current paths and tissue damage due to inadequate control over saline fluid around electrodes, leading to issues like accumulation in the throat or lungs.
Innovation Solution
An electrosurgical system equipped with an orientation sensor and a flow control device that automatically adjusts conductive fluid flow based on the wand's orientation and elevation, ensuring consistent fluid delivery and preventing excess saline accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If saline is delivered to the treatment site during electrosurgical procedures, then effective tissue treatment is enabled, but excess saline can migrate and cause unintended electrical current paths and tissue damage
Solution Approach 1:
The system dynamically adjusts the conductive fluid flow rate based on real-time wand orientation detection. The flow control device modifies fluid delivery parameters in response to orientation sensor data, ensuring optimal fluid levels are maintained regardless of wand position, thereby preventing both insufficient treatment and excess saline accumulation
Solution Approach 2:
The system employs a feedback mechanism where the orientation sensor continuously monitors wand position and feeds this information to the flow control device. This closed-loop control enables the system to automatically adjust fluid flow rates to maintain appropriate saline levels at the treatment site, preventing migration and accumulation while ensuring effective tissue treatment
2Device complexity
If manual control of saline flow is used, then system simplicity is maintained, but consistent fluid delivery cannot be ensured due to wand orientation changes
Solution Approach 1:
The system performs self-adjustment by automatically modifying fluid flow rates based on wand orientation. The orientation sensor and flow control device work autonomously to maintain optimal saline levels without requiring manual intervention, allowing the system to adapt to position changes while preserving overall operational simplicity
Solution Approach 2:
The flow control device changes fluid delivery parameters (flow rate, pressure) in response to detected orientation changes. This dynamic parameter adjustment ensures consistent fluid delivery to the treatment site regardless of wand position, achieving stability without complex manual control mechanisms
3Stability of the object's composition
If flow control device adjusts fluid rate based on wand orientation, then fluid delivery consistency is improved, but device complexity increases
Solution Approach 1:
The system replaces manual mechanical flow control with an automated electronic control mechanism. The orientation sensor and flow control device use electronic signaling to adjust fluid delivery, substituting complex manual mechanical adjustments with a simpler automated system that provides more consistent results
Data Source
AI summary
Controlling conductive fluid flow during an electrosurgical procedure. At least some of the example embodiments are methods including: flowing conductive fluid from a source lumen to a suction lumen of an electrosurgical wand, the flowing with the electrosurgical wand in a first orientation; sensing a change in orientation of the electrosurgical wand to a second orientation different than the first orientation; and changing a control parameter associated with the conductive fluid flow, the changing responsive to the change in orientation of the electrosurgical wand.