Simple exosmosis sensor

The utility model relates to the field of medical instruments in the infusion department, in particular to a simple venous exosmosis sensor which comprises an alarm module, a bandage and a sensing module. The two ends of the bandage are connected with the alarm module to form a wearable ring, the sensing module is arranged on the alarm module and located on the side facing a wearer, and the alarm module gives an alarm when the sensing module is pressed. The alarm module and the bandage are combined to form the wearable equipment, the wearable equipment is worn on the infusion part of the limb of the patient, meanwhile, the sensing module monitors the expansionary force acting on the alarm module or the bandage when the limb of the patient swells, so that when liquid exosmosis occurs at the infusion part of the patient, the limb of the patient swells locally, and the patient is prevented from being injured. And the alarm module gives an alarm immediately to remind medical staff to pay attention. 本实用新型涉及输液科医疗器材