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Introduction

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It is a device which replaces nervefunction lost as a result of disease or injury.

Can be used in the spinal cord to allow standing inparaplegics.

Can be used to restore hand and upper

movement in Tetraplegics.

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It records and processes inputs from outside

the body and transmits information to the

sensory nerves for interpretation by the

brain.

Examples: Cochlear implant to restore

hearing, retinal cortex prostheses for

restoring vision, extra sensory input.

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I t lli t H Pr t i

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How do neurons communicate ?

&How do we communicate with neurons ?

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Most nerves communicate via Action otentials. We communicate by Voltages Manipulationand and Injecting

currents.Key Issues : 1) Amplitude , 2)Duration and olarity ,

3) Spatial Selectivity

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System must be Durable.

Device must be Palatable.

Anumber of materials have been identified asbeing safe.

Encapsulation between implant and cellsshould be more.

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Sacral nerve stimulation

Cochleaimplants

Pain control via Spinal chord

Retinal implantsNerveStimulation

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y Nerve stimulation for foot drop.

y Artificial genitourinary sphincter to controlsexual activity!!

y Nerve stimulator for long term artificialrespiration.

y Chronic Deep brain stimulation.

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Implant TechnologiesNeuron modelling Stimulating/recording nerves Auditory ProsthesesVisual ProsthesesMotor Prostheses Emerging Technologies

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Health is Wealth

Need of future.

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