Pocket-enabled chip assembly for implantable devices
First Claim
1. A biocompatible sealable pocket, comprising;
- a substrate having a first surface; and
a layer of a biocompatible material connected to said first surface of said substrate, said layer of said biocompatible material defining an open pocket between said biocompatible substrate and said layer of said biocompatible material, said open pocket having at least one electrical contact configured to be accessible on an internal surface thereof, said open pocket configured to accept at least one electrical circuit component and to provide electrical communication between said at least one electrical contact and said at least one electrical circuit component, said biocompatible sealable pocket configured to be sealed and to be implanted within a living organism after accepting said at least one electrical circuit component, said biocompatible sealable pocket configured to provide a biocompatible object capable of biologically significant electrical communication with said living organism within which said biocompatible sealable pocket is implanted.
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Accused Products
Abstract
Systems and methods for providing biologically compatible pockets or envelopes that can contain chips and other circuit elements and can make electrical connection between those elements and living organisms. The assembled biologically compatible pockets and circuit components can have biomedical applications, such as bioimplantable devices such as retinal, cochlear and cortical prosthesis implants, muscular stimulators, and other uses. In various embodiments, the described technology explains how to make and use pocket systems for dealing with chips having connectors on one or two surfaces, and with other circuit components such as resistors, capacitors, inductors and transistors. Operation of chips encapsulated according to the described technology is demonstrated. Accelerated life testing suggests that the pocket systems described will survive for years at 37 degrees C.
37 Citations
19 Claims
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1. A biocompatible sealable pocket, comprising;
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a substrate having a first surface; and a layer of a biocompatible material connected to said first surface of said substrate, said layer of said biocompatible material defining an open pocket between said biocompatible substrate and said layer of said biocompatible material, said open pocket having at least one electrical contact configured to be accessible on an internal surface thereof, said open pocket configured to accept at least one electrical circuit component and to provide electrical communication between said at least one electrical contact and said at least one electrical circuit component, said biocompatible sealable pocket configured to be sealed and to be implanted within a living organism after accepting said at least one electrical circuit component, said biocompatible sealable pocket configured to provide a biocompatible object capable of biologically significant electrical communication with said living organism within which said biocompatible sealable pocket is implanted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 19)
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12. A method of making a biocompatible sealable pocket, comprising the steps of:
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a. providing a substrate having a first surface; b. depositing a layer of a sacrificial material having a predefined length, a predefined width, and a predefined thickness on a portion of said surface of said substrate; c. depositing a layer of a biocompatible material over said layer of said sacrificial material, said layer of said biocompatible material extending beyond said sacrificial material; d. depositing a layer of a conductive material over at least a portion of said layer of said biocompatible material; e. depositing a second layer of a biocompatible material over said layer of said conductive material, said layer of said biocompatible material extending beyond said conductive material; f. providing openings in said second layer of said biocompatible material to provide electrical access to said conductive material through said second layer of said biocompatible material; and g. removing said sacrificial material to define a free volume having said predefined length, said predefined width, and said predefined thickness, said free volume configured to accept at least one electrical circuit component; whereby said free volume represents an open pocket having at least one electrical contact configured to be accessible on an internal surface thereof, said open pocket configured to accept at least one electrical circuit component and to provide electrical communication between said at least one electrical contact and said at least one electrical circuit component, said biocompatible sealable pocket configured to be sealed and to be implanted within a living organism after accepting said at least one electrical circuit component, said biocompatible sealable pocket configured to provide a biocompatible object capable of biologically significant electrical communication with said living organism within which said biocompatible sealable pocket is implanted. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification