| 摘要 |
<p>1. A polyvalent implantable cadiac pacemaker (1) with external control means, comprising in combination an electricity conducting case (3) adapted to constitute one terminal of an excitation tripole (T) which comprises three terminals (Tb, Tea, Teb) ; an electrical power source (4) disposed in the case ; electronic circuits and components (5) likewise disposed in the case, associated with the electrical power supply, adapted to deliver stimulation pulses to the heart of the patient receiving the pacemaker, comprising an input amplifier (11) and an output amplifier (12), switching means (15) controlled by external control means (16) for passing from one possible mode of operation of the pacemaker to another possible mode of stimulation, two outputs (6a, 6b) associated with the electronic circuits and components with which two stimulation electrodes (8a, 8b) can be associated comprising two other terminals of the excitation tripole, the input amplifier (11) and the output amplifier (12) defining an output quadripole (Q) with four terminals (Qsa, Qsb, Qea and Qed), the switching means (15) being interposed between the output quadripole (Q) and the excitation tripole (T), adapted to allow a plurality of junction combinations between the quadripole (Q) and the tripole (T) characterized in that the switching means (15) comprise twelve switches (K1, K2, K3, K4, K5, K6, K7, K8, K9, K10, K11, K12) providing, with the aid of the electrical connection means (17), various combinations of possible electrical connections between the four terminals (Qsa, Qsb, Qea and Qed) of the tripole (Q) and the three terminals (Tb, Tea and Teb) of the tripole (T), so as to allow, by acting on the control means (16), to select the operation of the pace-maker from the monopolar or bipolar modes, or monopolar double, or double monopolar, or ventricular bifocal.</p> |
