Apple patent
The tech company has made headlines over the past few days for its consumer health efforts related to its smartwatches.
        
        
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          The item could measure blood pressure, respiration rate and ECG signals. 
        
        
          Also: Apple patent on Apple Watch strap sensors; Drone medical delivery service raises $190 million.
        
        
          The two sensors could also be used to detect pollution or carbon monoxide, or help prevent exacerbation of respiratory conditions.