Subdural sensor
Inventors
Suzuki, Michiyasu • Nomura, Sadahiro • Inoue, Takao • Yamakawa, Toshitaka
Assignees
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Publication Number
US-12396650-B2
Publication Date
2025-08-26
Expiration Date
Abstract
A subdural sensor includes: a substrate formed of a flexible material; and at least one type of sensor part mounted on the substrate. The substrate has an elongated shape, and includes: a sensor area in which the sensor part is mounted and a wiring pattern connected to the sensor part is formed; a wiring area contiguous with the sensor area, the wiring pattern extending in the wiring area; and a connector area contiguous with the wiring area, the connector area being an area on which a connector to be connected to the wiring pattern extending from the wiring area is mounted. A tip part of the sensor area has a planar shape that curves convexly toward an outer periphery, and a side shape that curves toward a first surface, the first surface being on the side of a dura mater when the subdural sensor is inserted into the subdural space.
Core Innovation
The invention relates to a subdural sensor arranged in a subdural space and acquiring biological information about the brain. The sensor includes a substrate formed of a flexible material and at least one type of sensor part mounted on the substrate. The substrate has an elongated shape as a whole and supports a sensor area, a contiguous wiring area, and a connector area.
The substrate includes a sensor area in which the at least one type of sensor part is mounted, together with a wiring pattern connected to the at least one type of sensor part. The wiring pattern extends in the wiring area, and the connector area is contiguous with the other end of the wiring area, where a connector to be connected to the wiring pattern is mounted. The tip part of the sensor area has a planar shape that curves convexly toward an outer periphery and a side shape that curves toward a first surface, the first surface being on the side of a dura mater when inserted into the subdural space.
In the described configurations, the subdural sensor enables brain biological monitoring in the subdural space, including near-infrared spectroscopy blood flow measurement. The near-infrared spectroscopy blood flow measurement uses a dome/light reflection part that bulges toward the inner periphery, and the same metal light reflection structure wraps an electrocorticogram electrode.
Claims Coverage
The document identifies one independent claim. The independent claim covers a flexible elongated subdural sensor architecture with sensor area, wiring area, and connector area, including a specific convexly curved tip geometry relative to dura mater. Dependent claims further refine wiring and sensor functionalities, including near-infrared spectroscopy blood flow measurement and electrocorticogram electrode use of a light reflection part.
Flexible elongated subdural sensor with sensor, wiring, and connector areas
A subdural sensor arranged in a subdural space for acquiring biological information about the brain, comprising a substrate formed of a flexible material and at least one type of sensor part mounted on the substrate, where the substrate has an elongated shape as a whole, and includes a sensor area, a wiring area contiguous with the sensor area, and a connector area contiguous with the wiring area.
Convexly curved tip geometry relative to dura mater
A subdural sensor in which a tip part of the sensor area has a planar shape that curves convexly toward an outer periphery, and a side shape that curves toward a first surface, the first surface being on the side of a dura mater when the subdural sensor is inserted into the subdural space.
Overall claim coverage is anchored by a flexible elongated subdural sensor having a defined sensor area, wiring area, and connector area, together with a convexly curved tip geometry configured relative to dura mater. The dependent claim set further specifies sensor and wiring refinements, including near-infrared spectroscopy blood flow measurement and using a light reflection part as an electrocorticogram electrode.
Stated Advantages
Enables brain biological monitoring in a subdural space.
Enables near-infrared spectroscopy blood flow measurement.
Enables electrocorticogram measurement using a light reflection part as an electrode.
Documented Applications
Brain biological monitoring in a subdural space.
Near-infrared spectroscopy blood flow measurement in a subdural space.
Electrocorticogram measurement in a subdural space.
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