Some implementations provide a method for treating craniofacial pain in a patient, the method including: placing a wirelessly powered passive device through an opening into a target site in a head or neck region of the patient's body, the wirelessly powered passive device configured to receive an input signal non-inductively from an external antenna; positioning the wirelessly powered passive device adjacent to or near a nerve at the target site; and causing neural modulation to the nerve through one or more electrodes on the wirelessly powered passive device.

A method for monitoring health of a subject based on a physiological response to physical exertion, by processing circuitry of a medical device system, is described that includes detecting a plurality of exertion events of the subject based on a first sensed signal that varies as a function of movement of the subject. The method further includes determining a response of a physiological parameter of the subject to the exertion event for each of the detected exertion events based on second sensed signal that varies as a function of the physiological parameter. The method further includes determining that a change in the responses over time crosses threshold and generating an alert to a user based on the determination that the change crosses the threshold.

The present technology is generally directed to wearable devices for treating sleep apnea, and associated systems and methods. In some embodiments, a system for treating sleep apnea comprises an implantable device and a wearable device. The implantable device can be implantably positionable at a patient's head and/or neck, proximate to the patient's oral cavity, and include a signal generator configured to generate an electrical signal, an electrode coupled to the signal generator to direct the electrical signal to the patient's tissue, and a power receiver device coupled to the signal generator. The wearable device can include a power source and a power transmission device coupled to the power source and configured to transmit power wirelessly to the implantable device.

A medical having a motion sensor is configured to set an atrial event sensing parameter used for sensing atrial event signals from a motion signal produced by the motion sensor. The medical device sets an atrial event sensing parameter by applying a sensing window during each one of multiple ventricular cycles, determining a feature of the motion signal during the sensing window for at least a portion of the ventricular cycles, and setting the atrial event sensing parameter based on the determined features. The medical device may sense the atrial event from the motion signal according to the atrial event sensing parameter.

A peripheral nerve interface including a microclip having a substantial U-shape and including an upper entry portion for entry of a nerve into the microclip and a lower seating portion for seating the nerve in the lower seating portion of the microclip; a stretchable microelectrode array including a plurality of electrodes, wherein the stretchable microelectrode array has a proximal end portion fixed to the microclip and a portion that is moveable and dragged into the upper entry portion and then the lower entry portion of the microclip in response to the microclip be positioned on the nerve; and an interface connected to a distal end of the stretchable microelectrode array and configured to interface with an external device for applying electrical stimulation to the nerve seated in the lower seating portion and for recording electrical characteristic of the nerve seated in the lower seating portion via the plurality of electrodes in the stretchable microelectrode array.

A bridge device includes a housing, a plurality of electrodes exposed outside of the housing such that at least two of the plurality of electrodes can be concurrently placed in contact with a patient's skin. A controller is disposed within the housing. A first communications module is operably coupled to the controller and to the at least two of the plurality of electrodes. The first communications module is configured to allow the controller to communicate with an implantable medical device via at least two of the plurality of electrodes using conducted communication. A second communications module is operably coupled to the controller and is configured to allow the controller to communicate with a remote device external to the patient.

A leadless pacemaker device configured to provide for an intra-cardiac pacing, including: processing circuitry configured to generate ventricular pacing signals for stimulating ventricular activity, and a reception device for receiving a sensing signal indicative of an atrial activity, wherein the processing circuitry is configured to detect an atrial event derived from said sensing signal, wherein the atrial event is a valid atrial sense event, where a series of atrial events lie within a range for a normal atrial rate, and/or when the atrial rate variability is within a certain range indicating a regular atrial rhythm, wherein in case a valid atrial sense event is detected, the processing circuitry is further configured to: determine ventricular pacing events according to atrial events, calculate ventricular-atrial time delays, determine a correction value based a measured time delay and the calculated time delay, and adjust the ventricular pacing timing based on the correction value.

An implantable medical device configured to deliver pacing therapy, the implantable medical device including a device body configured to position within a heart, where the device body comprises a proximal body portion and a distal body portion and defines a longitudinal axis extending through the proximal body portion and the distal body portion, the proximal body portion is configured to rotate around the longitudinal axis relative to distal body portion, and a leadlet mechanically coupled to the device body, where the leadlet mechanically supports an electrode configured to deliver pacing therapy, and where in response to the proximal body portion rotating relative to the distal body portion, the device body is configured to alter an extension length of the leadlet.

A wireless power transfer system that employs a form of conductively coupled power transfer to transfer energy to deeply implanted devices.

An electrode assembly for the positioning of an electrode of an implantable medical lead includes a housing and an electrode subassembly. The housing includes a proximal end for connecting to the lead and a distal end. The housing defines a housing lumen extending between the proximal end and the distal end. The housing lumen includes internal screw threads extending along at least a portion of the housing lumen. The electrode subassembly is disposed at least partially within the housing lumen. The electrode subassembly includes a needle electrode and a coupler. The needle electrode is disposed coaxially with the longitudinal axis of the housing lumen. The coupler is disposed at a proximal end of the needle electrode. The coupler includes external screw threads engaged with the internal screw threads of the housing lumen such that rotation of the coupler moves the needle electrode along the longitudinal axis of the housing lumen.