Blood flow sensor and blood flow measurement device
US11202581B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2017 |
| Grant date | Dec 21, 2021 |
| Priority date | — |
| Expiry date | May 29, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/746
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
To provide a blood flow sensor in which a fluctuation of measurement results is suppressed during measurement of the blood flow volume. A probe portion is provided with a sensor portion which has a laser diode generating laser light, a photodiode receiving light, and a sensor housing having a contact surface contacting a subject and which irradiates a subject with the laser light generated by the laser diode through the contact surface, receives reflected light from the subject in the photodiode, and outputs a signal relating to the received light amount, a holding portion holding the sensor housing so as to be movable in an up-and-down direction crossing the contact surface, and a coil spring absorbing and transmitting external force applied to the holding portion to the sensor portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.