Most implanted sensors contain electronics: a transducer, a power source and a way to transmit data. Each of those components sets a limit on how long the implant can stay in the body, how it behaves in an MRI scanner, and how small it can be.
A mechanical alternative
A microfluidic sensor replaces electronics with geometry. A sealed channel contains a small volume of gas or fluid. When the surrounding pressure changes, the interface inside the channel moves by a predictable distance. Reading the sensor means reading that position optically — no power is consumed inside the body at all.
Why it matters clinically
- No battery to deplete or replace, enabling long dwell times
- No electronic components that drift as they age in tissue
- Designed for MRI compatibility, since there is no metal circuitry
- Small enough to be placed during a surgery the patient is already undergoing
The same electronics-free principle underlies Smartlens miLens, now in a U.S. pivotal trial for glaucoma — evidence that the approach can translate from bench to clinic.
← All insights