Cortical Sensing Device With Conformable Pads For Brain Anchoring
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Solution Overview
Problem
Current cortical sensing devices lack effective anchoring mechanisms, leading to potential brain tissue penetration and difficulty in maintaining precise positioning during intracranial monitoring, which complicates the accurate localization of epileptogenic foci.
Innovation Solution
A cortical sensing device with a support member and thin, flexibly-conformable pads that securely anchor to the brain surface, allowing for precise positioning and minimizing movement, featuring a clover-shaped design with pads attached along an arc for enhanced contact area and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If typical cortical strip electrodes are used, then the device can be placed on the brain surface, but it lacks effective anchoring and may move or penetrate brain tissue
Solution Approach 1:
The patent employs flexible pads made of conformable material that can adapt to the brain surface contours while maintaining secure contact. These pads are integrated with the cortical sensing device to provide flexible anchoring without rigid structures that might penetrate brain tissue, thus resolving the contradiction between stable anchoring and tissue safety.
Solution Approach 2:
The patent utilizes curved or conformable pad structures that match the natural curvature of the brain surface. This curvature allows the pads to wrap around and adhere to the brain surface more effectively, enhancing anchoring stability while distributing contact forces to prevent localized penetration of brain tissue.
2Adaptability or versatility
If multiple cortical strip electrodes are placed to monitor various brain positions, then coverage is improved, but device complexity and placement difficulty increase
Solution Approach 1:
The patent designs a single cortical sensing device with multiple sensing elements that can be positioned at different locations on the brain surface. This multi-functional design allows one device to perform monitoring at various positions, reducing the total number of separate electrodes needed while maintaining comprehensive coverage.
Solution Approach 2:
The patent divides the cortical sensing device into multiple independent sensing elements or pads that can be individually positioned on different brain regions. This segmentation allows flexible configuration of monitoring positions without requiring separate complete electrode assemblies, simplifying the overall device complexity while maintaining adaptability.
3Measurement precision
If the sensing element is not securely anchored, then placement is easier, but positioning precision is lost and movement occurs
Solution Approach 1:
The flexible pads provide a balance between ease of placement and positioning precision. The conformable material allows the pads to be easily adapted to the brain surface during placement, while once contacted, they provide secure anchoring through surface adhesion and conformability, preventing movement and maintaining measurement precision.
Solution Approach 2:
The cortical sensing device utilizes the brain surface itself as part of the anchoring mechanism. The flexible pads conform to and adhere to the brain surface, allowing the device to anchor itself without requiring external fixation structures or complex placement procedures, thus maintaining both ease of placement and positioning accuracy.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device effectively prevents unintentional movement and penetration, providing a larger contact area with the brain surface, enabling more accurate and reliable monitoring of cortical electrical activity while maintaining ease of placement and safety.
Implementation Method 1
The pad is substantially thin and made from material that is flexibly-conformable. Flexibly-conformable refers to the ability of the pad to easily conform to the contours of the brain surface where the sensing device is placed while being able to recover its original shape and size when removed.
Data Source
AI summary
A cortical sensing device is provided that includes a sensing element and at least one pad attached adjacent to a support member. The pad is substantially thin and made from flexibly-conformable material to accurately and safely place the sensing device upon the brain surface. Contact between the lower surface of the pad and the brain surface anchors the sensing element at a desired position against unintentional movement. The sensing device preferably has three circular pads equidistant from one another. A method to position a cortical sensing device upon a brain surface is also disclosed comprising the steps of providing a cortical sensing device having a sensing element and three dielectric pads attached to a support dielectric member where the member and the pads are thin and flexibly-conformable, placing the sensing device upon the brain surface at a desired position for sensing brain activity, and allowing the pads to conform to the brain surface so that interaction therebetween prevents movement of the sensing element along the brain surface.