Shielded capacitor sensor system for medical applications and method
US9345492B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2014 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | May 21, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/182
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A measurement system for measuring a parameter of the muscular-skeletal system is disclosed. The measurement system comprises a capacitor, a signal generator, a digital counter, counter register, a digital clock, a digital timer, and a data register. The sensor of the measurement system is the capacitor. The measurement system generates a repeating signal having a measurement cycle that corresponds to the capacitance of the capacitor. The capacitor comprises more than one capacitor mechanically in series. Electrically, the capacitor comprises more than one capacitor in parallel. In one embodiment, the capacitor includes a dielectric layer comprising polyimide. A force, pressure, or load is applied to the capacitor that elastically compresses the device. The capacitor is shielded from parasitic coupling and parasitic capacitance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.