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Low-frequency wireless heartbeat detector hanging over the ear

  • US 20090281436A1
  • Filed: 05/09/2008
  • Published: 11/12/2009
  • Est. Priority Date: 05/09/2008
  • Status: Abandoned Application
First Claim
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1. A low-frequency wireless heartbeat detector hanging over the ear, comprising:

  • a) an ear-hanging unit having a hanging portion hanging over the ear of a user, an internal portion extending from the hanging portion downwards with its bottom end approaching to the internal side of the earlobe, and an external portion extending from the hanging portion outwards to the external side of the ear; and

    b) a wireless heartbeat detector attached to the external portion of the ear-hanging unit, at least one part thereof leaning against the external side of the earlobe of the user, the wireless heartbeat detector having;

    i) a housing formed in match of the shape of the ear and having an internal side leaning against the ear and an external side opposing to the internal side;

    ii) a reflection type heartbeat-sensing element disposed within the housing and having an infrared transmitting terminal on a control circuit board and a receiving terminal in alignment with the infrared transmitting terminal, the infrared transmitting terminal and the receiving terminal being exposed on the internal side of the housing and leaning against the external side of the earlobe for detecting the slight blood change in the blood capillary of the earlobe created by heartbeat, thereby receiving the heartbeat impulse signal of the user;

    iii) a power source positioned within the housing for supplying the power required by the wireless heartbeat detector;

    iv) a sensitive switch positioned at the internal side of the housing for controlling the on/off state of the reflection type heartbeat-sensing element;

    v) a noise suppression circuit and the filter-shaping amplifying circuit disposed within the housing and electrically coupled to the reflection type heartbeat-sensing element; and

    vi) a low-frequency wireless transmitter disposed within the housing for transmitting the heartbeat signal of the filter-shaping amplifying circuit to a display unit having a low-frequency wireless signal receiver for displaying the heartbeat signal.

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