Abstract: Hemostatic springs and hemostatic seals comprising hemostatic springs facilitate introducing a surgical device into the vasculature of a patient during a surgical procedure. Each hemostatic spring comprises a radial array of spring segments positioned on a circular path about a central axis. Each hemostatic seal is configured to reduce an axial length of the hemostatic spring to constrict the radial array of spring segments to reduce a cross-sectional area of the central passage. Methods include axially inserting the surgical device into the hemostatic seal while compression from the hemostatic seal minimizes fluid leakage. Methods can further include reducing a frictional force of inserting the device into the hemostatic seal by reducing the axial compression to dilate the hemostatic spring.

Abstract: Systems, devices, and techniques are described for calibrating a medical device that senses ECAP signals from a patient's nerve tissue. For example a method includes instructing, with processing circuitry, stimulation circuitry of a medical device to deliver, on stimulation electrodes of the medical device, an electrical stimulation signal having an amplitude substantially equal to zero to a patient, entering, with the processing circuitry subsequent to instructing the stimulation circuitry to deliver the electrical stimulation signal, a passive recharge state on stimulation electrode circuitry, and auto-zeroing, with the processing circuitry, inputs to an operational amplifier of sensing circuitry electrically coupled to sensing electrodes of the medical device while the stimulation electrode circuitry is in the passive recharge state.

Abstract: A fixation component includes tines extending from a base portion of the fixation component. Each tine is elastically deformable between a pre-set position and an open position. Each tine includes a hook segment extending from a proximal end near the base portion to a distal end. Each tine also includes a distal segment extending from the distal end of the hook segment to a tissue-piercing tip. When positioned in the pre-set position, the hook segment extends along a pre-set curvature that encloses an angle between 135 degrees and 270 degrees, and the distal segment extends away from a longitudinal axis of the fixation component.

Abstract: A method for ablating tissue by applying at least one pulse train of pulsed-field energy. The method includes delivering a pulse train of energy having a predetermined frequency to cardiac tissue, the pulse train including at least 60 pulses, an inter-phase delay between 0 ?s and 5 ?s, an inter-pulse delay of at least 5 ?s, and a pulse width of 5 ?s.

Abstract: Systems, devices, methods, and techniques are described for using evoked compound action potential (ECAP) signals to monitor lead position and/or detect lead migration. An example system includes sensing circuitry configured to sense an ECAP signal, and processing circuitry. The processing circuitry controls the sensing circuitry to detect, after delivery of an electrical stimulation pulse, a current ECAP signal, and determines one or more characteristics of the current ECAP signal. The processing circuitry also compares the one or more characteristics of the current ECAP signal to corresponding one or more characteristics of a baseline ECAP signal, and determines, based on the comparison, a migration state of the electrodes delivering the electrical stimulation pulse. Additionally, the processing circuitry outputs, based on the migration state, an alert indicative of migration of the electrodes.

Abstract: Systems and methods are described herein for use in synchronizing electrical activity monitored by a plurality of external electrodes with supplemental cardiac data for use in evaluating a patient's cardiac condition and configuring cardiac therapy. The supplemental cardiac data may include one or more markers indicative of the occurrence of cardiac events and/or data representative of representative of at least one of cardiac electrical signals, cardiac sounds, cardiac pressures, blood flow, and an estimated instantaneous flow waveform provided by a left ventricular assist device.

Abstract: Devices and methods described herein facilitate rapid wireless recharging, while reducing risk of injury, damage, or discomfort caused by heat generated during recharging. The embodiments described herein are useful in a variety of context, including for IoT devices, personal electronics, electric vehicles, and medical devices, among others. Such devices can prevent localized overheating of the device.

Abstract: An implantable medical device assembly comprises a sealed housing; a motor including a rotating output shaft within the sealed housing; a first coaxial shaft within the sealed housing, the first coaxial shaft being mechanically coupled to the rotating output shaft such that rotation of the rotating output shaft drives rotation of the first coaxial shaft; a second coaxial shaft external to the sealed housing, the second coaxial shaft being in axial alignment with the first coaxial shaft; an oscillating component mechanically coupling the first coaxial shaft to the second coaxial shaft, wherein rotation of the rotating first coaxial shaft drives the oscillation of the oscillating component, wherein the oscillation of the oscillating component drives rotation of the second coaxial shaft; and a flexible seal including the oscillating component. The sealed housing and the flexible seal combine to form a substantially sealed enclosure encasing the motor and the first coaxial shaft.

Abstract: A method includes detecting whether one or more myocardial infarctions (MI) has occurred using vectorcardiographic (VCG) signals with gradient boosting, the VCG signals including VCG loops, and determining an MI location using the VCG signals and gradient boosting.

Abstract: A medical system for obstructive sleep apnea (OSA) treatment includes therapy delivery circuitry configured to output one or more electrical stimulation signals to a tongue of a patient; sensing circuitry configured to sense one or more compound muscle action potential (CMAP) signals, wherein the one or more CMAP signals are generated in response to the delivery of the one or more electrical stimulation signals; and processing circuitry configured to: cause the therapy delivery circuitry to output the one or more electrical stimulation signals to the tongue; receive information indicative of the one or more CMAP signals from the sensing circuitry; determine, based on the one or more CMAP signals, one or more therapeutic stimulation parameters for the OSA treatment; and cause the therapy delivery circuitry to deliver therapeutic electrical stimulation signals according to at least the determined one or more therapeutic stimulation parameters.

Abstract: A medical system is configured to deliver an implantable medical device to a targeted implant site. The system may include a processor configured to receive a cardiac electrical signal and determine a feature of the cardiac electrical signal. The processor may be configured to determine a position of the delivery tool based on at least one feature of the cardiac electrical signal. The processor may detect a deployment position of the delivery tool in response to the cardiac electrical signal feature meeting criteria for detecting the deployment position.

Abstract: A medical device system includes a cardiac electrical stimulation device and a ventricular assist device (VAD). The cardiac stimulation device and the VAD are capable of communication with each other to confirm detection of cardiac events.

Abstract: Systems and methods that automatically adjust, or adapt, stimulation waveforms delivered to brain structures. Closed loop system embodiments can automatically be re-configured into a more suitable closed loop control system in response to measures of control system performance. Measures can be internal performance characteristics of the adaptive control system or external inputs provided by another subsystem. As these measures change in time, the robust adaptive system changes in response.

Abstract: A method for ablating tissue by applying at least one pulse train of pulsed-field energy. The method includes delivering a pulse train of energy having a predetermined frequency to cardiac tissue, the pulse train including at least 60 pulses, an inter-phase delay between 0 ?s and 5 ?s, an inter-pulse delay of at least 5 ?s, and a pulse width of 5 ?s.

Abstract: The present application relates to an occlusion device for occluding a left atrial appendage. The device has an expandable hollow body with an internal volume. The expandable body includes a proximal portion having a first diameter, wherein the proximal portion is arranged to sealingly engage against an opening of the left atrial appendage, a distal portion having a second diameter, wherein the distal portion is arranged to be positioned inside and at least partially fill the left atrial appendage and a central portion extending between the proximal and distal portion, wherein the central portion comprises a waist region with a third diameter. The third diameter of the waist region is smaller than the first diameter of the proximal portion and the second diameter of the distal portion.

Abstract: A delivery system for delivering a device to a body lumen includes an inner shaft coupled to a distal tip and an outer sheath slidingly disposed over the inner shaft. The outer sheath is configured to hold the device in a radially compressed configuration. The outer sheath includes a proximal capsule and a distal capsule. The delivery system further includes a removable sleeve configured to couple the proximal capsule to the distal capsule during loading of the device into the delivery system. A distal end of the distal capsule is configured to interlock with the distal tip after the device is loaded into the delivery system.

Abstract: The present application relates to an occlusion device for occluding a left atrial appendage. The device has a stem with an elongate tubular body and a central lumen that extends from a proximal end to a distal end with a proximal portion arranged at the proximal end of the stem, The proximal portion is arranged to engage with an opening of the left atrial appendage. The device includes an expandable member arranged at the distal end of the stem. The central lumen of the stem is in fluid communication with the expandable member and the expandable member is arranged to be positioned inside a left atrial appendage. The expandable member is operable to at least partially expand and displace the proximal portion in a direction towards the expandable member.

Abstract: Techniques for switching an implantable medical device (IMD) from a first mode to a second mode in relation to signals obtained from internal sensors are described. The internal sensors may include a temperature sensor and a biosensor. In some examples, processing circuitry of the IMD may make a first preliminary determination that the IMD is implanted based on a first signal from the temperature sensor. In response to the first preliminary determination being that the IMD is implanted, the processing circuitry may make a second preliminary determination that the IMD is implanted based on a second signal from the biosensor. The processing circuitry may switch the IMD from a first mode to a second mode based on both the first preliminary determination and the second preliminary determination being that the IMD is implanted.

Abstract: Novel tools and techniques are provided for implementing intelligent assistance (“IA”) ecosystem, and, in some cases, for implementing extended reality (“XR”) for cardiac arrhythmia procedures. In various embodiments, a computing system might receive device data associated with a device(s) configured to perform a cardiac arrhythmia procedure to provide effective heart rhythm, might receive imaging data associated with an imaging device(s) configured to generate images of a portion(s) of a patient. The computing system might analyze the received device data and imaging data (collectively “received data”), might map the received data to a 3D or 4D representation of the portion(s) of the patient based on the analysis, and might generate and present (using a user experience (“UX”) device) one or more XR images or experiences based on the mapping.

Abstract: Devices, systems, and methods may manage therapy delivery to a patient based on one or more physiological markers. In some examples, a method includes detecting a physiological marker that occurs prior in time to a dysfunctional phase of a physiological cycle, wherein a dysfunctional state of the physiological cycle occurs during the dysfunctional phase without treatment, responsive to detecting the physiological marker, initiating a first phase of the physiological cycle having a duration of time. The method may also include, responsive to the first phase elapsing, controlling a therapy delivery module to deliver neurostimulation therapy during a second phase that begins prior to the dysfunctional phase, wherein the neurostimulation therapy is configured to treat the dysfunctional state.