Electrosurgical System Dynamic Identification Circuit
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Solution Overview
Problem
Existing electrosurgical systems lack sufficient security measures to prevent unauthorized instruments from being used, which can compromise the integrity and safety of surgical procedures.
Innovation Solution
An electrosurgical system with a dynamic identification mechanism using a first unit and a second unit, where the second unit presents a parameter with alternating finite values, and the first unit detects these characteristics to adjust the RF output, ensuring only authorized electrode assemblies are used, incorporating a sensing circuit and controller to identify and adapt to the specific electrode assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a simple identification system is used to detect instrument type, then the ease of operation is improved, but the security against unauthorized instruments deteriorates
Solution Approach 1:
The identification system transitions from static to dynamic by having the identification circuit alternately present different parameter values (first finite non-zero value and second finite value) at different time periods. This dynamic identification sequence makes unauthorized instrument duplication significantly more difficult while maintaining ease of operation through automatic detection by the sensing circuit.
Solution Approach 2:
The identification circuit employs periodic action by alternating between presenting the first parameter value during a first time period and the second parameter value during a second time period. This periodic variation creates a time-dependent identification signature that enhances security while the sensing circuit automatically detects these periodic changes without requiring complex user intervention.
2Reliability
If a dynamic identification system with alternating parameter values is implemented, then the security against unauthorized instruments is improved, but the device complexity increases
Solution Approach 1:
The identification system implements self-service by having the identification circuit automatically alternate between different parameter values without external control, and the sensing circuit autonomously detects and processes these variations. The controller automatically adjusts RF output based on detected identification sequences, eliminating the need for complex manual configuration or external intervention despite the enhanced security features.
Solution Approach 2:
The identification circuit serves multiple functions: it presents different parameter values for security verification, provides instrument type identification, and enables automatic controller adjustment. This multi-functionality reduces overall system complexity by consolidating what would otherwise require separate systems into a single integrated circuit that performs identification, authentication, and control adjustment simultaneously.
Data Source
AI summary
An electrosurgical system includes at least a first unit and a second unit, the second unit being detachably connectible to the first unit and including an electrode assembly. The first unit includes a power supply, an RF oscillator circuit for generating a radio frequency output, and an output stage adapted to supply an RE output to the electrode assembly. The second unit includes an identification circuit presenting, in an alternating manner, a parameter with a first finite non-zero value for a first time period, and a parameter with a second finite value for a second time period. The first unit includes a sensing circuit and a controller adapted to detect a characteristic of the identification circuit and provide an output signal, the controller connected to the sensing circuit and receiving the output signal, adjusts the RF output so as to suit the particular electrode assembly.