A pressure cuff is provided, comprising a plurality of layers and a controller. The layers comprise: an outer covering, an outer surface of which is exposed when the pressure cuff is secured around a body part of a patient； a first conductive layer； a first insulating layer separating the outer covering and the first conductive layer； an inner covering, the inner surface of which contacts the patient or the patient's clothing when the pressure cuff is secured to the patient； a second conductive layer； a second insulating layer separating the inner covering and the second conductive layer； and a first piezoelectric support layer separating the first and second conductive layers. The controller is electrically coupled to the first and second conductive layers and configured to supply a voltage to the first and second conductive layers, whereupon the first piezoelectric support layer constricts around the body part of the patient.
