Abstract: Computer-implemented methods and systems are provided that receive, at an implantable medical device (IMD), a programming package comprising a collection of configuration change requests, transaction credentials, and a signature indicative of a source of the programming package. The transaction credentials include a first hash of the collection of configuration change requests. The IMD validates an external device as the source by decrypting the signature using a key that is uniquely associated with the external device. The IMD verifies the transaction credentials and the configuration change requests of the programming package, and generates a second hash of the collection of configuration change requests. Responsive to both (i) the second hash matching the first hash and (ii) the transaction credentials and the configuration change requests being verified, the IMD executes the collection of configuration change requests to update an operating configuration of the IMD.

Abstract: Embodiments described herein can reduce a burden associated with analyzing EGM segments obtained from an IMD that monitors for arrhythmic episodes. Respective EGM data and respective classification data is obtained for each arrhythmic episode detected by the IMD during a period of time. A representative R-R interval or HR for each of the arrhythmic episodes is also obtained, wherein a manner for determining the representative R-R interval or HR depends on the type of the arrhythmic episode, such that for at least two different types of arrhythmic episodes the manners differ. One or more arrhythmic episodes is/are selected for which corresponding EGM segments are to be displayed for each type of arrhythmic episode, wherein the selecting is performed based on the representative R-R intervals or HRs that are determined for the plurality of arrhythmic episodes. Additional and alternative embodiments are also described herein.

Abstract: Described herein are methods, devices, and systems that enable a remote non-implantable device (RNID) to send commands to a leadless pacemaker (LP) implanted within a patient. The RNID provide commands to a local non-implantable device (LNID) over one or more communication networks, and the LNID sends the commands to a second implantable device (SID) by transmitting radio frequency (RF) communication signals, which include the commands, using an antenna of the LNID. After receiving the commands from the LNID, by receiving RF communication signals that include the commands using an antenna of the SID, the SID transmits conductive communication signals, which include the commands, using electrodes of the SID. The LP receives the commands from the SID by receiving the conductive communication signals, which include the commands, using electrodes of the LP, and the LP performs command responses based on the commands that originated from the RNID.

Abstract: Methods and devices for establishing secure communications with an implantable medical device (IMD) are provided. The method and devices receive a credential from an external instrument (EI). The credential is signed utilizing a private key, and the credential includes at least two of a credential time to live (TTL) indicator, an IMD Identifier (ID), and an EI ID. The method and device authenticate the credential using a public key and verify the at least two of the TTL indicator, the IMD ID, and the EI ID. The method and device establish a secure communications session with the EI based on the verification and authentication.

Abstract: Methods and devices for establishing secure communications with an implantable medical device (IMD) are provided. The method and devices receive a credential from an external instrument (EI). The credential is signed utilizing a private key, and the credential includes at least two of a credential time to live (TTL) indicator, an IMD Identifier (ID), and an EI ID. The method and device authenticate the credential using a public key and verify the at least two of the TTL indicator, the IMD ID, and the EI ID. The method and device establish a secure communications session with the EI based on the verification and authentication.

Abstract: Systems and methods are provided for bridging a bi-directional communication link between an external device and an implantable medical device (IMD). The systems and methods establish a first bi-directional communication link between an external device and a wireless bridge device according to a wireless protocol, and establish a second bi-directional communication link between the wireless bridge device and an IMD concurrently with the first bi-direction communication link according to the wireless protocol. The systems and methods further receive a data packet from the external device at the wireless bridge device. The data packet is received during the communication interval. The systems and methods further transmit the data packet from the wireless bridge device to the IMD during the communication interval.

Abstract: An electric machine with a closed circuit air cooling provides using only passive elements to realize an efficient and compact heat transfer from inside the electric machine to an ambient heat sink.

Abstract: Systems and methods are provided for maintaining a bi-directional communication link between an external device and an implantable medical device (IMD). The systems and methods receive a connection request from an external device at the IMD. The communication request includes one or more communication link parameters based on a wireless protocol, defining a first communication interval. The systems and methods establish a bi-directional communication link between the external device and the IMD based on the one or more communication link parameters, and receive, during the first communication interval, a data packet from the external device along a first data channel, the data packet including an adjusted communication link parameter. The adjusted communication link parameter include a second communication interval.

Abstract: Systems and methods are provided for bridging a bi-directional communication link between an external device and an implantable medical device (IMD). The systems and methods establish a first bi-directional communication link between an external device and a wireless bridge device according to a wireless protocol, and establish a second bi-directional communication link between the wireless bridge device and an IMD concurrently with the first bi-direction communication link according to the wireless protocol. The systems and methods further receive a data packet from the external device at the wireless bridge device. The data packet is received during the communication interval. The systems and methods further transmit the data packet from the wireless bridge device to the IMD during the communication interval.

Abstract: A system and method are provided for initiating a secured bi-directional communication session with an implantable medical device. The system and method include configuring a pulse generator (PG) device and an external device to establish a communication link there between through a wireless protocol with a defined bonding procedure. The system and method also include transmitting a static identification and dynamic seed from the PG device through a dedicated advertisement channel to the external device and generating a passkey from a pre-defined algorithm based on the dynamic seed and a static identification. Further, the system and method include starting the defined bonding procedure.

Abstract: Systems and methods are provided for initiating a bi-directional communication link with an implantable medical device. The systems and methods configure an implantable medical device (IMD) to detect activation fields from a triggering device when the triggering device is positioned proximate to the IMD, and to identify a field characterization of the activation field. The systems and methods further configure the IMD to establish a bi-directional communication link with an external device through a select communication initialization mode form a plurality of communication initialization modes defined by a wireless protocol in response to the field characterization of the activation field.

Abstract: An arrangement includes conducting bar ends connected together and a cap) covering them filled with a putty. The cap is made of a resin containing a high thermal conductivity filler. The putty is a silicone elastomer containing a high thermal conductivity filler.

Abstract: A system and method are provided for initiating a secured bi-directional communication session with an implantable medical device. The system and method include configuring a pulse generator (PG) device and an external device to establish a communication link there between through a wireless protocol with a defined bonding procedure. The system and method also include transmitting a static identification and dynamic seed from the PG device through a dedicated advertisement channel to the external device and generating a passkey from a pre-defined algorithm based on the dynamic seed and a static identification. Further, the system and method include starting the defined bonding procedure.

Abstract: An electric machine with a closed circuit air cooling provides using only passive elements to realize an efficient and compact heat transfer from inside the electric machine to an ambient heat sink.

Abstract: An arrangement includes conducting bar ends connected together and a cap) covering them filled with a putty. The cap is made of a resin containing a high thermal conductivity filler. The putty is a silicone elastomer containing a high thermal conductivity filler.

Abstract: An electro-optical interface with a package base having an electrical connection configuration suitable for connecting to a source of electrical signals. A semiconductor optical signal source is provided mounted to the base and having a second or higher order grating in the cavity. The signal source is operatively connected to the package base whereby the electronic signals may be converted into optical signals. A waveguide is positioned adjacent to the signal source to couple the optical signal to the waveguide. The cavity is sized, shaped and positioned so that a radiation field for the cavity is not a mode discrimination mechanism wherein any back reflections into the cavity will affect a coupling coefficient to the radiation field without significantly adversely affecting the output signal quality.

Abstract: A surface emitting semiconductor laser is shown having a semiconductor laser structure defining an intrinsic cavity having an active layer, opposed cladding layers contiguous to said active layer, a substrate and electrodes by which current can be injected into said semiconductor laser structure to cause said laser structure to emit an output signal in the form of at least a surface emission. The intrinsic cavity is configured to have a dominant mode on a longer wavelength side of a stop band. A structure such as a buried heterostructure for laterally confining an optical mode is included. A second order distributed diffraction grating is associated with the intrinsic cavity, the diffraction grating having a plurality of grating elements having periodically alternating optical properties when said current is injected into said laser structure.

Abstract: An electro-optical interface with a package base having an electrical connection configuration suitable for connecting to a source of electrical signals. A semiconductor optical signal source is provided mounted to the base and having a second or higher order grating in the cavity. The signal source is operatively connected to the package base whereby the electronic signals may be converted into optical signals. A waveguide is positioned adjacent to the signal source to couple the optical signal to the waveguide. The cavity is sized, shaped and positioned so that a radiation field for the cavity is not a mode discrimination mechanism wherein any back reflections into the cavity will affect a coupling coefficient to the radiation field without significantly adversely affecting the output signal quality.