A pacemaker is configured to operate in an atrial synchronous ventricular pacing mode and, after expiration of a conduction check time interval, switch to an asynchronous ventricular pacing mode that includes setting a ventricular pacing interval to a base pacing rate interval. The pacemaker is further configured to determine when atrioventricular block detection criteria are satisfied during the asynchronous ventricular pacing mode and, responsive to the atrioventricular block detection criteria being satisfied, switch back to the atrial synchronous ventricular pacing mode.

In at least one example, a medical device is provided. The medical device includes at least one therapy electrode, at least one acoustic sensor, and at least one processor coupled with the at least one therapy electrode and the at least one acoustic sensor. The at least one processor is configured to deliver at least one pacing pulse via the at least one therapy electrode and to analyze processed acoustic data to determine whether the at least one pacing pulse resulted in capture.

An ICD multimode system comprises a microcontroller or FPGA having a memory, a differentially driven phased array amplifier, one or more sensors, and a wireless transmitter/receiver. Based upon sensor data and demand criteria programmed into the memory, the system provides late systolic impulse (LSI) therapy to treat congestive heart failure (CHF) and ventricle level-shifting (VLS) therapy to block unwanted PVCs to prevent VT or VF dynamically and use a phased array amplifier therapy to accurately manage CRT. An external echocardiogram and ultrasound system adjusts the therapies administered based upon sensor and demand data in real time to allow a patient's heart to function at a level of improved performance and increase ejection fraction EF.

Systems, methods and devices to facilitate insertion of a lead for cardiac therapy into an intercostal space associated with the cardiac notch of a patient are described including devices, methods and medical procedure templates to facilitate insertion proximate to a lateral margin of the patient's sternum.

Aspects of the present disclosure are directed toward a medical device having a a core assembly. The core assembly includes a core circuit assembly and a core assembly housing configured to enclose the core circuit assembly. The core assembly housing includes a first portion, and a second portion configured to be coupled to the first portion along a weld seam. The second portion includes at least one weld joint feature, which includes a thinned section of the second portion.

Embodiments of the present disclosure relate to detecting implantable medical device orientation changes. In an exemplary embodiment, a medical device having a processor, comprises an acceleration sensor and memory. The acceleration sensor is configured to generate acceleration data that comprises a plurality of acceleration measurements. The memory comprises instructions that when executed by the processor, cause the processor to: obtain the acceleration data from the acceleration sensor; and determine, based on the acceleration data, that the medical device has flipped.

Flexible implantable subcutaneous heart device (HD) structure, including a flexible device body, at least one flexible lead and at least one respective transition unit, the transition unit for respectively coupling each flexible lead to the flexible device body, the flexible device body including a plurality of inner components and a respective plurality of hollow outer units, the hollow outer units for encasing and protecting the inner components, each one of the hollow outer units including at least one hollow rigid element and a hollow flexible element, the hollow flexible element coupled with the hollow rigid element for enabling the outer unit a degree of flexibility, wherein the hollow flexible element is covered with a covering and wherein the flexible device body is covered with a polymer.

A wearable monitoring device includes a plurality of cardiac sensing electrodes, a monitor, at least one motion sensor, and a controller. The plurality of cardiac sensing electrodes are positioned outside a body of a subject and to detect cardiac information of the subject. The monitor administers a predetermined test to the subject, and has a user interface configured to receive quality of life information from the subject. The at least one motion sensor is positioned outside the body of the subject and to detect subject motion during the predetermined test. The controller is communicatively coupled to the plurality of cardiac sensing electrodes, the monitor, and the at least one motion sensor, and receives and stores the detected cardiac information, the quality of life information, and the detected subject motion. The controller further communicates the stored detected subject motion and the quality of life information to a remote computer.

The invention relates to improved cardiac pacemakers and methods of use thereof. In particular the cardiac pacemakers are useful for normalizing heart rates over resting heart rates in order to condition the heart to improve overall cardiac output.

A medical device provides stimulation therapy to a patient based on a set of therapy parameters. One or more therapy parameters may be automatically adjusted based on acceleration forces detected by a sensor, the acceleration forces being applied to the patient. In some examples, adjustments to one or more therapy parameter may be made based on an algorithm. The algorithm may be defined by acceleration and therapy parameter value pairs associated with opposite patient positions.