1. Field of the Invention
The present invention is particularly characterized by connecting the alarm apparatus with a suspension member to detect pulse on the patient's neck.
2. Description of the Related Arts
According to the alarm apparatus (1) of the prior application, shown in FIG. 5 to FIG. 7, which is connected with an integral control circuit and disposed in a housing part (2), like a wrist watch, fastened to inside of wrist (4) by a fastening belt (3), and detect the pulse from the wrist (4) by a sensor (5) set on the back side of said housing part (2), showing practical heartbeats per minute on a display screen (7) of a display device (6) in the front for user's observation. Wherein the patient's pulse is detected from the wrist (4) and then conveyed into the housing part (2), converted to electronic signal by energy transducer (8); electric pulse is formed by an oscillating circuit (9) at a pre-set frequency, then is counted through the energy transducer (8) and oscillating circuit (9) once the pulse is detected. Lastly, by a counter circuit (28) the electric pulse is converted to form of speed of pulse, showed by three-digit number on the display screen (7) of the display device (6) representing the pulse per minute for user's observation. Along one lateral of the housing part (2) are start button (10), maximum button (11), and minimum button (12). In which the start button (10) refers to a button to start the integral circuit operation; one minute after pressing said start button (10) user's heartbeats begin to reveal every minute. Said maximum button (11) refers to a button which is pressed to record a pulse maximum limit by releasing said button (11) after setting limit numbers on the display screen (7) the pulse number is saved in the recorder of the internal pre-set circuit (13) for comparison with the detected pulse in an internal comparator (14) which may trigger an internal alarm (15) once the patient's detected pulse is equal to or higher than the pre-set maximum limit to generate alarm signal, which may be alarm sound or phonetic sound, for the patient's or nurse's attention to take necessary actions. Said minimum button (12) refers to a button for recording a pulse minimum limit in accordance with the patient's condition, having same pre-set process with said maximum button (11), the pulse minimum limit is saved in the recorder of the internal pre-set circuit (13) for comparison with the detected pulse in said internal comparator (14) which may trigger the alarm (15) once the patient's detected pulse is equal or lower than the pre-set minimum limit to generate alarm signal warning the patient or nurse to take necessary actions.