| 摘要 |
An implantable rate responsive pacer (30) for pacing a patient's organs or living tissues. The pacer (30) comprises a pacer control circuit (70) for generating pulses to control the cardiac activity at a rate which varies between a predetermined upper limit and a predetermined lower limit as a function of the metabolic demand of the patient. The pacer (30) further includes a single electrode (A) for sensing the patient's physiologic parameters, and for generating signals indicative thereof. A pacer control device (70) responds to the electrode's signals, for generating control pulses to control the cardiac activity at the rate variable between the upper rate and the lower rate. The pacer control device (70) is located within a housing (30), and the electrode is physically coupled or connected to the housing (33). The electrode (A) has a surface area which is sufficiently large to optimize the sensitivity of the pacer (30). |
