| 发明名称 |
DETERMINING PULSE TRANSIT TIME NON-INVASIVELY USING HANDHELD DEVICES |
| 摘要 |
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. |
| 申请公布号 |
US2014249398(A1) |
申请公布日期 |
2014.09.04 |
| 申请号 |
US201313783395 |
申请日期 |
2013.03.04 |
| 申请人 |
MICROSOFT CORPORATION |
发明人 |
Morris Daniel;Saponas T. Scott;Tan Desney S.;Dixon Morgan;Khullar Siddharth;Vathsangam Harshvardhan |
| 分类号 |
A61B5/021;A61B5/00;A61B5/0408;A61B5/0404 |
主分类号 |
A61B5/021 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for determining pulse transit time using a handheld device, the method comprising:
generating an electrocardiogram (EKG) for a user of the handheld device, wherein the EKG is generated from two conductive contact points on the handheld device in contact with two portions of the user's body; de-noising the EKG to identify a start time when a blood pulse leaves a heart of the user; receiving a plurality of video images of the user; de-noising the plurality of video images of the user to identify a pressure wave indicating an arterial site and a time when the pressure wave appears; and determining a pulse transit time (PTT) based on the de-noised EKG and the de-noised video images. |
| 地址 |
Redmond WA US |
