| 摘要 |
FIELD: medical equipment. SUBSTANCE: pulser is intended for registering pulse oscillations in vessels of different tissues and organs, breathing motions and other processes accomplished with pressure changes in pneumatic system. Pulse oscillation receiver is made in form of metal thin-wall polyhedral reservoir, which is connected pressure-tightly with occlusion cuff through pneumatic route. Each face of the reservoir has piezoelectric plate fastened rigidly to it from inside. Faces of case and sensitive elements disposed onto the faces are connected electrically together for serial and parallel connection to registrars. Signal is formed in sensitive element under effect of pulse oscillations. When faces and sensitive elements are connected to registrar in series, all the faces of polyhedral reservoir are connected together through dielectric washers to form pressure-tight connection. At parallel connection, all faces of polyhedral reservoir are connected directly together to form pressure-tight connection. EFFECT: improved sensitivity and noise immunity of signals; improved comfort of exploitation; improved reliability of operation; widened area of application. |
