Optical trigger for therapy delivery
First Claim
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1. A medical device system for automatically delivering a therapy, comprising:
- a first device configured to sense a physiological signal and generate a control signal in response to the physiological signal;
an optical emitting device controlled by the first device to emit an optical trigger signal in response to receiving the control signal from the first device, wherein the optical trigger signal is not a physiological signal; and
a second device comprising a light detector for receiving light incident on the second device and configured to detect the optical trigger signal emitted by the optical emitting device by producing a voltage signal in response to the light incident on the second device, comparing the voltage signal to a trigger detection threshold, and detecting the optical trigger signal in response to the voltage signal being greater than the trigger detection threshold, the second device configured to deliver a therapy to a patient in response to the light detector detecting the optical trigger signal.
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Abstract
A medical device system is configured to sense a physiological signal by a first device and generate a control signal by the first device in response to the physiological signal. An optical transducer is controlled by the first device to emit an optical trigger signal in response to the control signal. A second device receives the optical trigger signal and delivers an automatic therapy to a patient in response to detecting the optical trigger signal.
31 Citations
25 Claims
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1. A medical device system for automatically delivering a therapy, comprising:
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a first device configured to sense a physiological signal and generate a control signal in response to the physiological signal; an optical emitting device controlled by the first device to emit an optical trigger signal in response to receiving the control signal from the first device, wherein the optical trigger signal is not a physiological signal; and a second device comprising a light detector for receiving light incident on the second device and configured to detect the optical trigger signal emitted by the optical emitting device by producing a voltage signal in response to the light incident on the second device, comparing the voltage signal to a trigger detection threshold, and detecting the optical trigger signal in response to the voltage signal being greater than the trigger detection threshold, the second device configured to deliver a therapy to a patient in response to the light detector detecting the optical trigger signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for delivering an automatic therapy by a medical device system, comprising:
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sensing a physiological signal by a first device; generating a control signal by the first device in response to the physiological signal; controlling an optical emitting device to emit an optical trigger signal in response to the control signal, wherein the optical trigger signal is not a physiological signal; detecting the optical trigger signal by a second device comprising a light detector by; receiving light incident on the second device by the light detector, producing a voltage signal in response to the light incident on the second device, comparing the voltage signal to a trigger detection threshold, and detecting the optical trigger signal in response to the voltage signal being greater than the trigger detection threshold; and delivering the therapy to a patient in response to the light detector detecting the optical trigger signal. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A non-transitory computer readable storage medium storing a set of instructions that cause an implantable medical device system to:
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sense a physiological signal by a first device; generate a control signal by the first device in response to the physiological signal; control an optical emitting device to emit an optical trigger signal in response to the control signal, wherein the optical trigger signal is not a physiological signal; detect the optical trigger signal by a second device comprising a light detector by; receiving light incident on the second device by the light detector, producing a voltage signal in response to the light incident on the second device, comparing the voltage signal to a trigger detection threshold, and detecting the optical trigger signal in response to the voltage signal being greater than the trigger detection threshold; and deliver a therapy to a patient in response to the light detector detecting the optical trigger signal.
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25. A medical device system for automatically delivering a therapy, comprising:
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a first device configured to sense a physiological signal and generate a control signal in response to the physiological signal; an optical emitting device controlled by the first device to emit an optical trigger signal in response to receiving the control signal from the first device; and a second device comprising a light detector for receiving light incident on the second device and configured to detect the optical trigger signal emitted by the optical emitting device by producing a voltage signal in response to the light incident on the second device, comparing the voltage signal to a trigger detection threshold, and detecting the optical trigger signal in response to the voltage signal being greater than the trigger detection threshold, the second device configured to deliver a therapy to a patient in response to the light detector detecting the optical trigger signal; wherein the second device further comprises; a pulse generator configured to generate electrical stimulation pulses; a control circuit coupled to the pulse generator and the light detector and configured to control the pulse generator to deliver an electrical stimulation pulse to a patient'"'"'s heart in response to the light detector detecting the optical trigger signal; a power source comprising at least one battery supplying power to the pulse generator for generating the electrical stimulation pulses; and a housing enclosing the pulse generator, the light detector the control circuit and the power source the light detector is configured to generate a trigger detect signal in response to detecting the optical trigger signal; the pulse generator comprises a capacitor; and the control circuit is configured to control the pulse generator to initiate charging of the pacing capacitor to a predetermined pacing pulse amplitude while waiting for the trigger detect signal.
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Specification