Patent ID: 9510785
Filing Date: 2016-12-06
CPC Classification: A61B,A61F

Claim Text:
1. A strain sensor apparatus configured for implantation into a biological host for detecting strain, the strain sensor apparatus comprising: a plurality of free-standing, inter-digitated fingers arranged to form an area variation inter-digitated capacitor having a capacitance, the plurality of fingers configured to be coupled to a surface in a configuration to allow movement with bending of the surface, wherein the inter-digitated capacitor is configured to change its capacitance as a result of a change in area defined between fingers of the plurality of fingers due to lateral movement of the plurality of fingers; a transmitter coupled to the inter-digitated capacitor; and an antenna coupled to the transmitter, each of the inter-digitated capacitor, the transmitter, and the antenna being configured for implantation in a biological host.