Sensor Connector Apparatus for BIS Monitoring
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Solution Overview
Problem
There is a challenge in securing space on the forehead for concurrent attachment of cerebral oxygen saturation and electroencephalographic sensors during brain surgery, leading to inadequate waveform acquisition due to remote voltage potential inclusion and degradation in BIS monitoring validity.
Innovation Solution
A sensor connector apparatus with conductive connector electrodes and a dielectric sheet is used to attach the BIS Quatro sensor to the forehead, allowing for effective electroencephalographic signal acquisition by connecting the sensor electrodes to the BIS processor, enhancing signal accuracy and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensors are attached to the forehead for BIS monitoring, then electroencephalographic signals can be acquired, but there is insufficient space for concurrent attachment of cerebral oxygen saturation sensors during brain surgery
Solution Approach 1:
The invention segments the sensor system into modular components: a reusable connector apparatus with conductive electrodes that can be detached and reattached, and disposable sensor pads. This allows flexible configuration where the connector remains on the forehead while sensor pads can be positioned optimally, enabling both BIS monitoring and cerebral oxygen saturation monitoring without spatial conflict.
Solution Approach 2:
The connector apparatus extends the connection pathway from a direct forehead-to-monitor configuration to a multi-dimensional arrangement where connector leads can route through different paths (along the skull, through surgical drapes, or via neck pathways), effectively utilizing three-dimensional space rather than being constrained to the limited two-dimensional forehead surface.
2Area of stationary object
If sensors are attached at remote positions, then space constraints are relieved, but waveform acquisition becomes inadequate due to remote voltage potential inclusion
Solution Approach 1:
The connector apparatus acts as an intermediary component with built-in reference electrodes and shielding structures. These intermediary elements maintain proper electrical reference potentials even when sensors are positioned at optimal distances from the forehead, preventing remote voltage potential inclusion while allowing flexible sensor placement.
Solution Approach 2:
The system allows adjustment of electrical parameters through the connector design, including impedance matching, shielding configurations, and reference potential establishment. By changing these electrical parameters in the connector, the system maintains waveform accuracy regardless of the physical distance between sensors and the forehead.
3Ease of manufacture
If a fixed connector structure is used, then manufacturing is simplified, but adaptability to different sensor types and configurations is reduced
Solution Approach 1:
The connector apparatus is designed with universal features including multiple contact points, adjustable lead configurations, and standardized connection interfaces that can accommodate different sensor types (BIS sensors, cerebral oxygen saturation sensors, ECG electrodes). This universal design maintains relatively simple manufacturing while enabling broad adaptability to various sensor configurations and monitoring requirements.
Data Source
AI summary
A sensor connector apparatus is disclosed to connected between an electroencephalographic spectrum analyzer and a sensor for use in the electroencephalographic spectrum analyzer. The sensor connector apparatus includes sensor connectors. Each of the sensor connectors includes: a connector to be connected to the electroencephalographic spectrum analyzer; a connector lead where the connector is connected to one end of the connector lead; and a conductive connector electrode that is connected to another end of the connector lead, and is connected to a sensor electrode of the sensor. The electroencephalographic spectrum analyzer is a bispectral index (BIS) processor, the sensor is a BIS Quatro sensor to be connected to the BIS processor, and the connector is connected to a sensor electrode of the BIS Quatro sensor.