Determining pulse transit time non-invasively using handheld devices
US9504391B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2013 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | May 9, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2560/0462
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system and method to determine pulse transit time using a handheld device. The method includes generating an electrocardiogram (EKG) for a user of the handheld device. Two portions of the user's body are in contact with two contact points of the handheld device. The method also includes de-noising the EKG to identify a start time when a blood pulse leaves a heart of the user. The method further includes de-noising a plurality of video images of the user to identify a pressure wave indicating an arterial site and a time when the pressure wave appears. Additionally, the method includes determining the PTT based on the de-noised EKG and the de-noised video images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.