Method and apparatus for neural stimulation with respiratory feedback
First Claim
1. A neural stimulation system, comprising:
- a stimulation output circuit configured to deliver a neural stimulation therapy;
a stimulation delivery controller coupled to the stimulation output circuit, the stimulation delivery controller configured to control the delivery of the neural stimulation therapy by executing a first stimulation algorithm configured to treat a non-respiratory disorder using vagal nerve stimulation;
a respiratory signal input configured to receive a respiratory signal indicative of respiratory cycles;
a respiratory disorder detector coupled to the respiratory signal input, the respiratory disorder detector configured to detect a respiratory disorder using the respiratory signal and determine whether the respiratory disorder is caused or worsened by the vagal nerve stimulation; and
a stimulation switch coupled to the respiratory disorder detector and the stimulation delivery controller, the stimulation switch configured to stop executing the first stimulation algorithm in response to the detection of the respiratory disorder caused or worsened by the vagal nerve stimulation.
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Abstract
A neural stimulation system controls the delivery of neural stimulation using a respiratory signal as a therapy feedback input. The respiratory signal is used to increase the effectiveness of the neural stimulation, such as vagal nerve stimulation, while decreasing potentially adverse side effects in respiratory functions. In one embodiment, the neural stimulation system synchronizes the delivery of the neural stimulation pulses to the respiratory cycles using a respiratory fiducial point in the respiratory signal and a delay interval. In another embodiment, the neural stimulation system detects a respiratory disorder and, in response, adjusts the delivery of the neural stimulation pulses and/or delivers a respiratory therapy treating the detected respiratory disorder.
121 Citations
28 Claims
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1. A neural stimulation system, comprising:
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a stimulation output circuit configured to deliver a neural stimulation therapy; a stimulation delivery controller coupled to the stimulation output circuit, the stimulation delivery controller configured to control the delivery of the neural stimulation therapy by executing a first stimulation algorithm configured to treat a non-respiratory disorder using vagal nerve stimulation; a respiratory signal input configured to receive a respiratory signal indicative of respiratory cycles; a respiratory disorder detector coupled to the respiratory signal input, the respiratory disorder detector configured to detect a respiratory disorder using the respiratory signal and determine whether the respiratory disorder is caused or worsened by the vagal nerve stimulation; and a stimulation switch coupled to the respiratory disorder detector and the stimulation delivery controller, the stimulation switch configured to stop executing the first stimulation algorithm in response to the detection of the respiratory disorder caused or worsened by the vagal nerve stimulation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for neural stimulation, the method comprising:
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controlling delivery of neural stimulation by executing a first stimulation algorithm adapted to treat a non-respiratory disorder using vagal nerve stimulation; receiving a respiratory signal indicative of respiratory cycles; detecting a respiratory disorder using the respiratory signal, including determining whether the respiratory disorder is caused or worsened by the vagal nerve stimulation; and stopping executing the first stimulation algorithm in response to the detection of the respiratory disorder caused or worsened by the vagal nerve stimulation. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification