Implants using ultrasonic backscatter for sensing physiological conditions

This invention describes a tiny implantable device that can measure either strain (like stretching or compression) or pressure inside the body. It works by using ultrasound: an external device sends sound waves to power the implant, and the implant then sends back a unique ultrasonic signal that tells the external device what it measured. While the original idea covered more types of measurements, the patent claims specifically focus on just strain or pressure.

Why it matters: Since 2019, advancements in low-power microelectronics and efficient ultrasonic energy harvesting have likely made wirelessly powering such tiny implants more feasible. Miniaturization techniques for integrated sensors and transducers have also progressed, easing the manufacturing challenge for devices under 5mm.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: SpecializedMiniature implantable electronics, ultrasonic transducers, biocompatible.

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