Heart rate detector
Patent 4549551 Issued on October 29, 1985. Estimated Expiration Date: 
November 18, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 18, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3581735 3750644 Pulsimeter Electronic pick-up device for transducing electrical energy and sound energy of the heart Portable digital heart rate meter/stethoscope System and method for predicting ventricular tachycardia with a gain controlled high pass filter Patent #: 4458692 InventorsAssigneeApplicationNo. 06/553116 filed on 11/18/1983US Classes:600/502, Pulse indicator600/528Detecting heart soundExaminersPrimary: Kamm, William E.Attorney, Agent or FirmInternational ClassesA61B 7/04 (20060101)A61B 7/00 (20060101) Foreign Application Priority Data1982-11-24 CAAbstractAn electronic heart sound detector in which a transducer detects the two primary heart beats of the heart cycle to produce a signal which is converted to a digital signal, filtered and the intervals between adjacent transitions determined and stored. The intervals are compared with previous values, successive values added if found substantially different and the stored or added values displayed if substantially the same as a previous correct value. The functions may be carried out by a microprocessor. | |
