Handheld Controller for Electrosurgical Pencil Settings
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Solution Overview
Problem
Existing electrosurgical instruments require external adjustments for power and mode settings, which can divert the surgeon's attention from the operating site, and lack ergonomic controls for efficient tissue treatment.
Innovation Solution
An electrosurgical pencil with a donut-style end effector assembly and a tensioning mechanism that includes a C-shaped clip with resilient arms and washers to securely engage the active electrode, allowing for adjustable tension and easy assembly, enabling efficient tissue treatment without the need for external adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If external adjustments for power and mode settings are used, then the electrosurgical generator can provide precise control, but the surgeon's attention is diverted from the operating site
Solution Approach 1:
The patent extracts the adjustment controls from the main electrosurgical generator body and relocates them to a handheld controller that the surgeon can operate directly at the patient's side. This allows precise power and mode adjustments without diverting attention from the operating site, as the controls are now within immediate reach of the surgeon's hand.
Solution Approach 2:
The patent introduces a handheld controller as an intermediary device between the electrosurgical generator and the surgeon. This mediator transfers the control functions to a portable interface that the surgeon can manipulate directly at the operating site, eliminating the need to return to the main generator for adjustments.
2Ease of operation
If simple controls are provided on the electrosurgical pencil, then ergonomic handling is improved, but the ability to regulate various modes and power settings is limited
Solution Approach 1:
The handheld controller serves multiple functions: it controls power levels, selects operational modes (cut, coagulate, blend), and provides ergonomic handheld operation. By consolidating these diverse control functions into a single portable device, the system achieves both versatility in tissue treatment options and ease of ergonomic handling at the surgical site.
3Measurement precision
If the electrosurgical pencil requires external adjustments, then precise control is maintained, but surgical efficiency is reduced
Solution Approach 1:
The handheld controller allows the surgeon to pre-adjust power and mode settings directly at the patient's side before beginning a surgical procedure or during transitions between tasks. This preliminary adjustment capability eliminates the need to interrupt the surgical flow to return to the main generator, thereby maintaining precise control while improving overall surgical efficiency.
Data Source
AI summary
An electrode assembly for an electrosurgical instrument includes a housing having an active electrical connector and a return electrical connector configured to operably engage a distal end of an electrosurgical instrument shaft, the housing encapsulating an elongated return electrode and a pair of insulative tubes configured to house a wire-like active electrode. The elongated return electrode includes a clevis at a distal end thereof and operably engages to the return electrical connector at a proximal end thereof. The wire-like active electrode operably engages at one end to the active electrical connector. A donut-like insulator is operably engaged to the clevis of the elongated return electrode and is configured to support the wire-like active electrode therearound. A tensioning mechanism is configured to operably engage an opposite end of the wire-like electrode and tension the wire-like active electrode about the donut-like insulator during assembly.