Patent References 3782389 3842841 Electromedical apparatus Apparatus for measuring impedance Biological tissue stimulator with adjustable high voltage power supply dependent upon load impedance Biphasic pulse output stage for electronic stimulating device Microprocessor controlled electronic stimulating device having biphasic pulse output Constant charge pacemaker Method and apparatus for phase related cardiac defibrillation Cardiac cardioverter/defibrillator with in vivo impedance estimation InventorsApplicationNo. 09/841183 filed on 04/23/2001US Classes:607/6, Sensing body condition or signal other than electrocardiographic signal607/7, Controlling or indicating stimulation level607/8Computing energy required or contact impedanceExaminersPrimary: Jastrzab, Jeffrey R.Attorney, Agent or FirmInternational ClassA61N 1/39 (20060101)AbstractA medical device constructed according to the invention includes electrodes (12a, 12b), a measuring unit (24) for measuring a patient-dependent electrical parameter (e.g., impedance) of the patient, an electrotherapy generator (26) for delivering electrotherapy to the patient, and a processing unit (20) for controlling the delivery of electrotherapy to the patient. Electrotherapy is preferably delivered to the patient based on the measured patient-dependent electrical parameter and a predetermined response of a reference patient to a nominal electrotherapy. The actual electrotherapy delivered to the patient is controlled so that the electrotherapy has a probability of success for the patient that is equivalent to the probability of success of the nominal electrotherapy for the reference patient. A consistent shock efficacy across different patients is achieved.Other References
Field of SearchCardioverting/defibrillatingSensing body condition or signal other than electrocardiographic signal Controlling or indicating stimulation level Computing energy required or contact impedance Testing or monitoring pacer function Measuring pacing, threshold, capture margin, or contact impedance | |