Measuring capillary refill time
US11806114B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 29, 2020 |
| Grant date | Nov 7, 2023 |
| Priority date | — |
| Expiry date | Jun 16, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/0271
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system for measuring capillary refill time includes a wearable device and a control unit. The wearable device includes a force sensor to obtain a force signal and an optical sensor to obtain an optical signal. The system ensures that an applied force is acceptable in both magnitude and duration, and that a duration over which the applied force is released or removed is acceptable. These factors can establish that a capillary refill time determined or calculated therein is accurate. The system can also determine the capillary refill time based on the force and optical signals obtained by the force and optical sensors, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.