US 11,883,140 B2
Tactile blood pressure imager
Mandayam A. Srinivasan, Newton, MA (US); Mohan Thanikachalam, Boston, MA (US); Edward Howard Adelson, Winchester, MA (US); and Abhijit Biswas, Shyamnagar (IN)
Assigned to Trustees of Tufts College, Medford, MA (US); and Massachusetts Institute of Technology, Cambridge, MA (US)
Appl. No. 17/044,321
Filed by Trustees of Tufts College, Medford, MA (US); and Massachusetts Institute of Technology, Cambridge, MA (US)
PCT Filed Mar. 29, 2019, PCT No. PCT/US2019/025011
§ 371(c)(1), (2) Date Sep. 30, 2020,
PCT Pub. No. WO2019/195120, PCT Pub. Date Oct. 10, 2019.
Claims priority of provisional application 62/684,726, filed on Jun. 13, 2018.
Claims priority of provisional application 62/652,180, filed on Apr. 3, 2018.
Prior Publication US 2021/0153755 A1, May 27, 2021
Int. Cl. A61B 5/022 (2006.01); A61B 5/02 (2006.01); A61B 5/107 (2006.01); A61B 8/08 (2006.01)
CPC A61B 5/02233 (2013.01) [A61B 5/02007 (2013.01); A61B 5/1075 (2013.01); A61B 5/1079 (2013.01); A61B 8/0891 (2013.01); A61B 2560/0223 (2013.01); A61B 2562/0214 (2013.01); A61B 2562/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for continuously, non-invasively, and directly measuring blood pressure, the method comprising:
providing a calibrated measurement device having a frame with a first side and a second side, a balloon mounted to the second side, an optical system between the first side and the balloon, and a sensor array having a sensor surface;
placing the sensor array in a non-invasive manner over a skin surface connected to an artery by adjoining soft tissues;
inflating the balloon with a controlled amount of pressure;
in response to the inflating of the balloon, detecting signals, via the optical system and the sensor array, caused by changes in artery size and shape during a heartbeat cycle; and
measuring and processing, via a controller, the signals to determine blood-pressure parameters.