Fiber optic in vivo diagnostic sensor system and blood vessel insertable pressure distribution measurement device
US10028667B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2014 |
| Grant date | Jul 24, 2018 |
| Priority date | — |
| Expiry date | Jul 25, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2560/0475
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A fiber optic biodiagnostic sensor system includes a blood vessel insertable pressure distribution measurement device to be inserted in vivo into a blood vessel to measure distributions of temperature and pressure of an object to be measured along a predetermined site, the device having an SM optical fiber deformable by temperature and strain, a structural member being in contact with a portion of the optical fiber to convert pressure of the to-be-measured object to strain of the optical fiber; and an outer layer converting the optical fiber and the structural member. The sensor system further includes a measurement unit emitting laser light into the SM optical fiber, detecting a frequency shift produced in the scattered light, and calculating a blood pressure at a given position of the optical fiber from a pressure change and a strain change of the SM optical fiber that are calculated from the frequency shift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.