Electromagnetic sensors for biological tissue applications and methods for their use
US7591792B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 2002 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Oct 5, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/143
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Tissue sensors house one or more sensor elements. Each element has a housing mounted substrate and a superstrate with a planar antenna between. A transitional periphery (TP) of a superstrate outer surface interconnects a base to a plateau. At least some of the TP has a generally smooth transition. Plural elements are spaced by the housing. Alternately, the superstrate TP is flat, the housing extends to the outer superstrate surface and a shield surrounds the element. The housing is flush with or recessed below the superstrate and defines a TP between the housing and superstrate. A method converts a reference signal to complex form; plots it in a complex plane as a reference point (RP); converts a measurement signal to complex form; plots it in the complex plane as a measurement point (MP); determine a complex distance between the MP and the RP; and compares complex distance to a threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.