Apple wants the Apple Watch to become your personal blood pressure measuring device — Apple World Today

Apple’s patent filing involves methods for estimating blood pressure values, and related blood pressure measurement systems, account for patient specific attributes. One method of estimating a blood pressure value of a patient includes receiving feature vector data corresponding to a pressure variation of a blood pressure cuff. 

The feature vector data is derived from physiological signals of the patient measured over the pressure variation of the blood pressure cuff. A first blood pressure value of the patient is estimated using a first algorithm that employs the feature vector data as input data.

In the patent filing, Apple notes that elevated blood pressure (a.k.a. hypertension) is a major risk factor for cardiovascular disease. As a result, blood pressure measurement is a routine task in many medical examinations. Apple says that timely detection of hypertension can help inhibit related cardiovascular damage via accomplishment of effective efforts in treating and/or controlling hypertension.