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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0673883 (1991-03-22) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 849 인용 특허 : 0 |
A method and apparatus for stimulating the right and/or left carotid sinus nerves or the right stellate ganglion or the epidural space at about T2 with continuous and/or phasic electrical pulses in response to detected myocardial ischemia to decrease cardiac workload as a method to protect the myoca
A method and apparatus for stimulating the right and/or left carotid sinus nerves or the right stellate ganglion or the epidural space at about T2 with continuous and/or phasic electrical pulses in response to detected myocardial ischemia to decrease cardiac workload as a method to protect the myocardium. The automatic detection of the need for such stimulation is responsive to a change in ST segment variation different from a predetermined or programmed threshold suggesting acute myocardial ischemia and/or other criteria or indicators of myocardial ischemia, including changes if pH and/or oxygen saturation (SO2) detected from a sensor located in the heart, preferably the coronary sinus. The system is implemented with a dual chamber pacemaker with programming and telemetry capabilities for automatically recording in memory the aforementioned values for periods of time preceding and following each instance of stimulation for telemetry out on command and for programming “on”one or more of the sensors.
A system for influencing the natural biological blood pressure regulatory system in a patient, for reducing and controlling ischemia of myocardial tissue by electrical pulse by stimulation of the patient\s nerve system, said system comprising: ischemia sensor means adapted to be located within the v
A system for influencing the natural biological blood pressure regulatory system in a patient, for reducing and controlling ischemia of myocardial tissue by electrical pulse by stimulation of the patient\s nerve system, said system comprising: ischemia sensor means adapted to be located within the venous return system of a patient\s heart for sensing a constituent of the venous return blood draining from myocardial tissue and producing an electrical output signal substantially representing a chemical constituent of that blood; signal transforming means for receiving the sensor means output signal and developing a stimulation trigger signal in response to an output signal indicative of a condition of ischemia; and means responsive to said trigger signal for applying electric stimulation pulses to said nerve system.
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