Autofocus wireless power transfer to implantable devices in freely moving animals

US10434329B2 · kind B2 · utility

Assignee

• The Board of Trustees of the Leland Stanford Junior University · US

Inventors

• Ada Shuk Yan Poon · Redwood City, US
• John Ho · Palo Alto, US
• Yuji Tanabe · Niihama, JP
• Alexander Yeh · Los Altos Hills, US
• Kate L. Montgomery · Palo Alto, US
• Logan Grosenick · Brooklyn, US
• Emily Anne Ferenczi · Palo Alto, US
• Vivien Tsao · Palo Alto, US
• Shrivats Mohan Iyer · Palo Alto, US
• Scott L. Delp · Stanford, US
• Karl Deisseroth · Stanford, US

Key dates

• Filing date: Mar 25, 2015
• Grant date: Oct 8, 2019
• Expiry date: Mar 25, 2035

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61N1/37205
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A power transmitter is provided that can include a microwave cavity resonant at a desired operating frequency, a hexagonal mesh top to leak evanescent fields out of the cavity, and a plurality of orthogonal monopole feeds with 90 degrees phase differences creating circularly polarized waves. The power transmitter can be configured to transmit energy to a wireless device implanted in an animal passing through the evanescent fields. Implantable devices are also described which can receive wireless energy from the power transmitter and stimulate the animals (e.g., optogenetic or electrical stimulation).