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Two-Coil Inductive Power Coupling

Inductive coupling is widely used as the scheme to wirelessly transfer power to the implantable device. In the application of retinal implants, the size limitation and long separation make the efficiency extremely low and cannot deliver adequate power for the high-resolution prostheses.

 

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Argus II Epi-retinal Prosthetic Implant

The implant is an epiretinal prostheses surgically implanted in and on the eye that includes a receiver coil, an electronics case, and a stimulating electrode array. The implant has a trans-sclera trans-choroid cable which may cause infection and hypotony.

 

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Age-Related Macular Degeneration (AMD)

It is a medical condition which usually affects older adults and results in a loss of vision in the center of the visual field. It is a major cause of blindness and visual impairment in older adults (>50 years). Retinal prosthetic device aiming for AMD requirements higher stimulating power.

 

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Buffer Power Coil Encapsulated in Contact Lens

The proposed buffer coil is encapsulated in contact lens and sits in between the transmitter and receiver coils which can enhance the power transfer efficiency. It is also inductively coupled to the intraocular coil and removes the trans-sclera trans-choroid cable.

 

Imagine a cure for blindness

  Project Ocupower is about providing power wirelessly for high-resolution chronic-implantation retinal prothesis. We are a team of young researchers in different fields of engineering from highly reputed universities across the US.By investigating into the power schemes and power losses along the power flow, we proposed and demonstrated a truly wireless power solution for the next-generation retinal implants: Ocupower.Team members collabrated works on different parts of the wireless power path, including power amplifier, inductive link and power chip design. Project Ocupower reflects our work throughout the last two years and it continues as our lab work goes on, we would also like to get feedbacks and share insights with those who are interested. Our website is hosted and maintained actively by our team with the latest updates of our project as well as advances in this field by other groups. We are building ocupower.net to become the one-stop place where patients and their care takers can use to stay informed

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