APPARATUS FOR VERIFICATION OF NON-INVASIVE SPHYGMOMANOMETERS Russian patent published in 2020 - IPC A61B5/22 

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to apparatus for calibrating non-invasive sphygmomanometers. Apparatus for verifying non-invasive sphygmomanometers (14) comprises cylindrical vessel (3) with a fluid for attaching compression cuff (2) of the tested sphygmomanometer, a pressure pulsation device, a pressure sensor and its pulsations (5). Pressure pulsation setter serves to transfer pressure pulsations with preset frequency to compression collar and is connected to comparator and control unit. Outputs of the pressure sensor and its pulsations are connected to the comparator and control unit (9) and to the input of the measurement unit and smoothing the pressure pulsations. Cylindrical vessel is connected by one end face with deformable nozzle (1), and by another one – with pressure generating element and its pulsations (4). Pressure vessel and its pulsations are placed in the cylindrical vessel. Output of the measurement unit and smoothing pressure pulsations (11) is connected to the first input of comparator (12). Output of the comparison device is connected to the input of the pressure difference logger and its pulsations (13) and to the input of the comparison and control unit. Second input of comparator is connected to output of sensor and meter of external static pressure (10). Pressure pulsation setter is made in the form of series-connected pressure generator and its pulsations (8) and drive (7). Actuator stem (6) is made in contact with the pressure generating element and its pulsations and allows simultaneous generation of the reference pressure values and their pulsations in the inner cavity of the cylindrical vessel.

EFFECT: enlarging possibility of verification of sphygmomanometers of various types with provision of specified accuracy of pressure measurements and frequency of pulsations.

3 cl, 1 dwg