Self-locking blood pressure cuff, blood pressure measuring instrument and wearing method

A self-locking blood pressure cuff, a blood pressure measuring instrument, and a wearing method include a cuff, a housing component, and a self-locking component. One end of the cuff is fixed to the housing component, the other end extends out of the housing component, and the self-locking component is installed at In the housing assembly, the self-locking assembly includes a mandrel, a locking element and an extrusion element, the mandrel is slidingly connected to the housing element, the locking element and the extrusion element are mounted on the mandrel, and the cuff drives the locking assembly to rotate, The core moves axially to the cuff and presses the locking component against the cuff. The pressing component resists the locking component and applies pressure to the locking component to prevent the locking component from rotating. The above self-locking blood pressure cuff only needs to be given a certain tension to pull the cuff, and letting go will not cause the cuff to rebound, which is convenient