Device for creating a neural interface and method for making same
First Claim
1. An implant device for creating a neural interface with the central nervous system comprising at least one electrode sandwiched within a bi-layer polyimide insulating substrate and at least one via formed within said bi-layer polyimide substrate, wherein said via is separate and apart from said electrode.
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Accused Products
Abstract
An implant device for creating a neural interface with the central nervous system having a polyimide-based electrode array is presented along with a method for making the device. The device may be configured as a three dimensional structure and is capable of sensing multi-unit neural activity from the cerebral cortex. Mechanical, electrical and biological characteristics of the device support its use as a reliable, long term implant.
177 Citations
35 Claims
- 1. An implant device for creating a neural interface with the central nervous system comprising at least one electrode sandwiched within a bi-layer polyimide insulating substrate and at least one via formed within said bi-layer polyimide substrate, wherein said via is separate and apart from said electrode.
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7. An implant device for creating a neural interface with the central nervous system comprising:
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a first flexible thermoplastic layer;
a second flexible thermoplastic layer;
a metal layer sandwiched between said first and second layers;
at least one electrode formed from said metal layer; and
at least one via formed within said first and second layers, wherein said via is separate and apart from said electrode. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An electrode array for creating a multi-channel neural interface with the central nervous system comprising:
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at least two electrodes sandwiched within a bi-layer polyimide insulating substrate; and
at least one via formed within said bi-layer polyimide insulating substrate wherein said via is separate and apart from said electrodes. - View Dependent Claims (23, 24, 25, 26, 27)
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28. A method for making a device for creating a neural interface with the central nervous system comprising the steps of
providing a silicon substrate; -
growing an oxide layer over said silicon substrate;
depositing and processing a first polyimide layer over said oxide layer;
depositing and patterning a conductive layer over said first polyimide layer;
depositing and processing a second polyimide layer over said conductive layer to form at least one electrode and at least one via in said polyimide layers wherein said via is separate and apart from said electrode; and
dissolving said oxide layer. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35)
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Specification