US 10,376,216 B2
Device for contactless monitoring of patient's vital signs
Vladimir Kolar, Slany (CZ); and Libor Seidl, Beroun (CZ)
Assigned to LINET SPOL. S R.O., Slany (CZ)
Appl. No. 15/27,211
Filed by LINET SPOL. S R.O., Slany (CZ)
PCT Filed Oct. 8, 2014, PCT No. PCT/CZ2014/000112
§ 371(c)(1), (2) Date Apr. 4, 2016,
PCT Pub. No. WO2015/051770, PCT Pub. Date Apr. 16, 2015.
Claims priority of application No. 2013-781 (CZ), filed on Oct. 8, 2013.
Prior Publication US 2016/0235367 A1, Aug. 18, 2016
Int. Cl. A61B 5/08 (2006.01); A61B 5/00 (2006.01); A61B 5/0205 (2006.01); A61B 5/024 (2006.01); A61B 5/0245 (2006.01); A61B 5/11 (2006.01); A61B 5/113 (2006.01)
CPC A61B 5/6892 (2013.01) [A61B 5/0205 (2013.01); A61B 5/0245 (2013.01); A61B 5/02444 (2013.01); A61B 5/0816 (2013.01); A61B 5/113 (2013.01); A61B 5/1115 (2013.01); A61B 2562/0247 (2013.01); A61B 2562/043 (2013.01); A61B 2562/046 (2013.01)] 12 Claims
OG exemplary drawing
 
1. Device for contactless monitoring of a patient's vital signs, the device comprising:
a measuring mat,
a processing unit, and
at least one measuring member arranged on the measuring mat, the measuring member comprising:
a cover,
a metal strip supported in relation to the cover for transmission of a force acting on the cover through the metal strip,
a piezoelectric sensor pressing against the metal strip opposite the cover, the piezoelectric sensor comprising a first and second conductive electrode and a piezoelectric element, and
a third conductive electrode connected to the processing unit and placed near the piezoelectric sensor, wherein at least one of the first and second conductive electrodes forms a capacitor in combination with the third conductive electrode, where upon applying the force to the cover, the cover presses against the metal strip, which in turn presses against the piezoelectric sensor to vary a distance between the at least one of the first and second electrodes of the piezoelectric sensor and the third electrode, where the distance varies depending on the force applied, and wherein a change in the distance between the at least one of the first and second electrodes of the piezoelectric sensor and the third electrode is proportional to a change in measured capacitance between the at least one of the first and second electrodes and the third electrode, the capacitance being measured by the processing unit.