Abstract: In some examples, a method for controlling delivery of cardiac therapy and cardiac sensing by a medical device system including electrodes for delivering the cardiac therapy may include storing, in a memory of the medical device system, a respective value for each of a plurality of cardiac therapy and/or sensing parameters and, in association with each of a plurality of heart position states, a respective modification of at least one of the cardiac therapy and/or sensing parameters. Such a method also may include determining a current one of the plurality of heart position states of the patient, modifying the at least one cardiac therapy and/or sensing parameter value according to the modification associated with the current heart position state, and controlling the delivery of the cardiac therapy and/or cardiac sensing according to the modified at least one cardiac therapy and/or sensing parameter value.

Abstract: In some examples, a method for controlling delivery of cardiac therapy and cardiac sensing by a medical device system including electrodes for delivering the cardiac therapy may include storing, in a memory of the medical device system, a respective value for each of a plurality of cardiac therapy and/or sensing parameters and, in association with each of a plurality of heart position states, a respective modification of at least one of the cardiac therapy and/or sensing parameters. Such a method also may include determining a current one of the plurality of heart position states of the patient, modifying the at least one cardiac therapy and/or sensing parameter value according to the modification associated with the current heart position state, and controlling the delivery of the cardiac therapy and/or cardiac sensing according to the modified at least one cardiac therapy and/or sensing parameter value.

Abstract: A surgical system includes a surgical generator and at least one energy delivery device. The surgical generator includes at least one energy output stage configured to deliver energy, a controller configured to control the energy output, and sensor circuitry. The energy delivery device(s) is coupled to the surgical generator, configured for insertion into a synovial joint, and configured to supply energy through synovial fluid in the synovial joint. In a sensing mode, the sensor circuitry is configured to sense at least one electrical parameter of the energy and the controller is configured to determine a parameter of the synovial fluid based thereon. The controller is further configured, in a treatment mode, to control the energy based upon the at least one determined parameter of the synovial fluid to treat tissue of the synovial joint.

Abstract: In some examples, medical device systems that deliver anti-tachyarrhythmia shock(s) (e.g., defibrillation shock(s)) to a heart of a patient in coordination with the respiration of the patient. In one example, a medical device system including therapy generation circuitry configured to generate a defibrillation shock. The medical device system also includes processing circuitry configured to identify a time at which a respiratory volume of a lung of a patient is at approximately end tidal volume or less; and control the therapy generation circuitry to deliver the defibrillation shock to a heart of the patient at the time that the respiratory volume of the lung of a patient is at the approximately end tidal volume or less.

Abstract: A device and method are described for transmitting tissue conductance communication (TCC) signals. A device may be is configured to establish a transmission window by transmitting a TCC test signal at multiple time points over a transmission test period to a receiving device and detect at least one response to the transmitted TCC test signals performed by the receiving device. The IMD is configured to establish the transmission window based on the at least one detected response so that the transmission window is correlated to a time of relative increased transimpedance between a transmitting electrode vector and receiving electrode vector during the transmission test period.

Abstract: In some examples, a method for controlling delivery of cardiac therapy and cardiac sensing by a medical device system including electrodes for delivering the cardiac therapy may include storing, in a memory of the medical device system, a respective value for each of a plurality of cardiac therapy and/or sensing parameters and, in association with each of a plurality of heart position states, a respective modification of at least one of the cardiac therapy and/or sensing parameters. Such a method also may include determining a current one of the plurality of heart position states of the patient, modifying the at least one cardiac therapy and/or sensing parameter value according to the modification associated with the current heart position state, and controlling the delivery of the cardiac therapy and/or cardiac sensing according to the modified at least one cardiac therapy and/or sensing parameter value.

Abstract: In some examples, medical device systems that deliver anti-tachyarrhythmia shock(s) (e.g., defibrillation shock(s)) to a heart of a patient in coordination with the respiration of the patient. In one example, a medical device system including therapy generation circuitry configured to generate a defibrillation shock. The medical device system also includes processing circuitry configured to identify a time at which a respiratory volume of a lung of a patient is at approximately end tidal volume or less; and control the therapy generation circuitry to deliver the defibrillation shock to a heart of the patient at the time that the respiratory volume of the lung of a patient is at the approximately end tidal volume or less.

Abstract: A device and method are described for transmitting tissue conductance communication (TCC) signals. A device may be is configured to establish a transmission window by transmitting a TCC test signal at multiple time points over a transmission test period to a receiving device and detect at least one response to the transmitted TCC test signals performed by the receiving device. The IMD is configured to establish the transmission window based on the at least one detected response so that the transmission window is correlated to a time of relative increased transimpedance between a transmitting electrode vector and receiving electrode vector during the transmission test period.

Abstract: A basket style electrical mapping catheter includes an elongated body with a proximal end and a distal end, where the proximal end has a user interface for controlling a basket-shaped electrode assembly that extends from the distal end of the elongated body. The basket-shaped electrode assembly includes a plurality of flexible splines supporting measurement electrodes configured to contact an electrically active substrate, and an expander spline disposed along a central axis of the basket-shaped catheter assembly supported a reference electrode. The orientation of the measurement electrodes relative to the reference electrode allows for electrical mapping to be conducted with greater sensitivity and specificity in order to more accurately detected diseased or damaged substrate.