Non-invasive detection of cerebral vasospasm
US10307065B1 · kind B1 · utility
1Cited by
14References
18Claims
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Key dates
| Filing date | Feb 12, 2016 |
| Grant date | Jun 4, 2019 |
| Priority date | — |
| Expiry date | Aug 17, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/0219
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Cerebral vasospasm is detected in subarachnoid hemorrhage patients by use of highly sensitive accelerometers in contact with the head. Acceleration data can be investigated in the time domain, typically averaged over a number of heartbeats, to detect a drop in energy during diastole, and diastole/systole ratio can be compared with known data of normal and vasospastic patients. Data from one or more accelerometers can also be subjected to FFT and optionally plotted in a waterfall diagram, to observe the appearance of energy at higher frequencies as 50 Hz to 1000 Hz, also indicating vasospasm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.