Heart treatment equipment and method for preventing fatal arrhythmia
First Claim
Patent Images
1. A heart treatment equipment for treating a patient comprising:
- a nerve stimulator for generating a nerve stimulating signal for stimulating a vagus nerve;
a sensor for sensing an intensity of physical exercise or mental stress of the patient; and
a controller connected to said nerve stimulator and said sensor,wherein said controller controls said nerve stimulator in response to an output of said sensor such that when the intensity of the physical exercise or the mental stress is relatively high, a relatively strong nerve stimulation is performed and when the intensity of the physical exercise or the mental stress is relatively low, a relatively weak nerve stimulation is performed or no nerve stimulation is performed, wherein said controller comprises a nerve stimulation parameter table memory at which is memorized at least one table relating a plurality of nerve stimulation parameters to the intensity sensed by said sensor, said controller controlling said nerve stimulator based on the nerve stimulation parameters selected from the nerve stimulation parameter table memory.
1 Assignment
0 Petitions
Accused Products
Abstract
In order to avoid a sudden cardiac death by a fatal arrhythmia, various living body information for generating a signal which shows a level of an autonomic tone is detected by a sensor or a VT/VF risk event is detected so as to control the stimulation of the vagus nerve or the nerve stimulation waveform. For this purpose, the parameter of the nerve stimulation signal is controlled according to a detection of the living body information represented by a QT interval which is measured by intracardiac information of the heart or a detection of a VT/VF risk event represented by a ventricular premature contraction which is picked up from spontaneous cardiac events.
-
Citations
15 Claims
-
1. A heart treatment equipment for treating a patient comprising:
-
a nerve stimulator for generating a nerve stimulating signal for stimulating a vagus nerve; a sensor for sensing an intensity of physical exercise or mental stress of the patient; and a controller connected to said nerve stimulator and said sensor, wherein said controller controls said nerve stimulator in response to an output of said sensor such that when the intensity of the physical exercise or the mental stress is relatively high, a relatively strong nerve stimulation is performed and when the intensity of the physical exercise or the mental stress is relatively low, a relatively weak nerve stimulation is performed or no nerve stimulation is performed, wherein said controller comprises a nerve stimulation parameter table memory at which is memorized at least one table relating a plurality of nerve stimulation parameters to the intensity sensed by said sensor, said controller controlling said nerve stimulator based on the nerve stimulation parameters selected from the nerve stimulation parameter table memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A heart treating method comprising:
-
sensing an intensity of physical exercise or mental stress; selecting from a nerve stimulation parameter table a variable parameter suitable for said intensity of physical exercise or mental stress, in response to the sensed intensity of physical exercise or mental stress wherein said nerve stimulation parameter table relates the variable parameter to the sensed intensity; and stimulating a vagus nerve in accordance with the variable parameter, such that when the intensity of the physical exercise or the mental stress is relatively high, a relatively strong nerve stimulation is performed and when the intensity of the physical exercise or the mental stress is relatively low, a relatively weak nerve stimulation is performed or no nerve stimulation is performed. - View Dependent Claims (13, 14, 15)
-
Specification