Shielded capacitor sensor system for medical applications and method
First Claim
1. An integrated medical sensor comprising an elastically compressible capacitor including a shield configured to reduce capacitive coupling to a conductive region of the capacitor.
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Accused Products
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.
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Citations
20 Claims
- 1. An integrated medical sensor comprising an elastically compressible capacitor including a shield configured to reduce capacitive coupling to a conductive region of the capacitor.
- 9. A medical device, tool, equipment, or component having a non-planar surface including a capacitor coupled to and conforming to the non-planar surface.
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19. A method of sensing a force, pressure, or load comprising the steps of:
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compressing a capacitor with the force, pressure, or load; and shielding at least one conductive region of the capacitor to reduce capacitive coupling. - View Dependent Claims (20)
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Specification