The module comprises a pendular unit with an elastically deformable piezoelectric beam having a clamped end and an opposite, free end, coupled to an inertial mass. The beam produces an oscillating electrical signal collected by electrodes, which is rectified and regulated to output a voltage for charging a battery. The number and configuration of the electrodes (T1, T2, B1, B2, N) carried by the piezoelectric beam define a plurality of pairs of electrodes between which a corresponding plurality of said oscillating signals can be simultaneously collected. A switching matrix, as a function of an input command, selectively switches the plurality of pairs of electrodes between each other according to a plurality of different series (S), parallel (P) and/or series-parallel (SP) configurations, the selected configuration being that which maximizes the power sent to the battery as a function of the voltage level (VBAT) present at the terminals of the latter.

The present subject matter includes an implantable medical device with a capture feature at or near the proximal end. In some cases, the capture feature includes a hold that is configured to facilitate a releasable connection with a delivery device that is used to deliver the implantable medical device to a target implant site.

Method and system for determining an atrial contraction timing fiducial in a leadless cardiac pacemaker system is disclosed. An electrical cardiac signal associated with an atrial contraction of the patient's heart and a mechanical response to the atrial contraction of a patient's heart are used to determine an atrial contraction timing fiducial. A ventricle pacing pulse may then be generated an A-V delay after the atrial contraction timing fiducial.

Methods and systems in which a first medical device provides patient status details to a second medical device. Patient status details may include one or more of patient posture and/or patient activity level, or other indications of patient status. The second medical device, in response to information about patient status and changes in patient status, uses a sensing configuration management function to respond to and accommodate the change in patient status. In an example, a first medical device monitors patient posture and communicates information related to patient posture to a second medical device, which then tailors sensing configurations to the patient posture.

Techniques for use with an implantable medical device (IMD) reduce how often a first receiver of the IMD wakes up a second receiver thereof to reduce power consumption. A received message and/or a channel over which messages can be received is/are examined, and a value is adjusted based on results thereof. After being adjusted, the value is compared to a first threshold if the IMD is in a normal state, or compared to a second threshold if the IMD is in a noise state. If in the normal state, there is a determination whether to stay in the normal state or switch to the noise state. If in the noise state, there is a determination whether to stay in the noise state or switch to the normal state. At least the second receiver is temporarily put to sleep, if the IMD is maintained in or switched to the noise state.

A material comprising a silicone, wherein a polymer is arranged on the surface of the silicone, the polymer is characterized by a higher wear resistance than the silicone, and the polymer is attached to the surface of the silicone by non-covalent bonds.

Catheter and implantable leadless pacing devices, systems, and methods utilizing catheters and implantable leadless pacing devices are disclosed. An example catheter system may include a holding structure extending distally from a tubular member. An implantable device, such a leadless pacing device, may be located within a cavity of the holding structure and an electrical barrier may be located within the holding structure at a location between a proximal electrode and a distal electrode of the implantable device. The electrical barrier may inhibit electrical signals of the implantable device from traveling within the holding structure between the proximal electrode and the distal electrode of the implantable device. The holding structure may include one or more electrical ports adjacent the proximal end of the holding structure and adjacent or proximal of the proximal electrode of the implantable device.

A kit includes a mesh substrate and a polymer that is fixed to the mesh substrate. The polymer includes an active agent that is configured to elute over time. The kit further includes a hemostatic agent. The hemostatic agent is separate from the mesh substrate and the polymer. Systems and methods are disclosed.

A method and implantable medical device system for delivering a cardiac pacing therapy that includes suspending delivery of the LV cardiac pacing therapy and sensing far-field cardiac signals via one or more far-field sensing vectors formed between a plurality of electrodes positioned on a single-pass coronary sinus lead. Far-field signal features are determined in response to the sensed far-field cardiac signals, a first offset interval and a second offset interval are determined in response to the determined far-field signal features, and an AV delay of the LV cardiac pacing therapy is adjusted in response to the determined first offset interval and second offset interval. Delivery of the LV cardiac pacing therapy having the adjusted AV delay is subsequently resumed.

The implant comprises a tubular body housing an energy harvesting module adapted to convert external stresses applied to the implant into electrical energy, and a rechargeable battery adapted to be charged by the energy harvesting module. During the storage, an external source physically separated from the implant is coupled to the implant rechargeable battery to maintain a minimum battery charge level. An interface circuit of the implant couples surface electrodes to the battery, with switching between: i) a transport and storage configuration where the electrodes are connected to the external source to receive from the latter a battery charging energy and/or to exchange communication signals with the outside through the wire link of the coupling; and ii) a functional configuration in which the surface electrodes are decoupled from the external source after the implant has been implanted. At least one of the implant surface electrodes is an auxiliary electrode that is not a cardiac potential detection/pacing electrode. In the transport and storage configuration, the interface circuit couple the auxiliary electrode to the implant rechargeable battery, and in the functional configuration, the interface circuit decouples the auxiliary electrode from the implant rechargeable battery and put the auxiliary electrode to a floating potential.