| 摘要 |
<p>A stimulator for regulating heartbeat rate as a function of myocardial contractility has a lead with a tip (25) positioned in the myocardium with a pressure sensor (26) for measuring myocardial contractility and electrodes (42, 43) for sensing the electrocardiographical signal of the heart and for applying stimulation to the heart, leads (21, 22, 23) for connecting the sensor (26) and electrodes (42, 43) to signal processing (51) producing a trigger signal from the heartbeat to pulse circuit (53) and a data signal from the sensor to analog-to-digital converter (52), a microprocessor controller (56) uses both signals to adjust the rate at which timing signal generator (60) actuates output circuit (62) to provide stimulation to electrodes (42, 43). External programming signals circuit (58) communicates with the microprocessor controller (56).</p> |
