This disclosure relates generally to medical devices. An end cap for a blood pressure cuff can comprise a flexible outer covering part, wherein an inner hole may be arranged on said outer covering part, said inner hole may be a blind hole, and said outer covering part is capable of clamping an outer wall of an air plug arranged on the blood pressure cuff by interference fit between said inner hole and said air plug the end cap may be inserted into an inner wall and/or clamp an outer wall of the air plug to seal the open end of the air plug, thus small particles, such as dust, and cleaning and disinfectant liquid cannot enter into the blood pressure cuff and thus cause an air path jam and corrode air path components during deflating, thereby prolonging the life of the blood pressure cuff.
