Abstract: A processing circuitry is configured to discharge capacitors to a discharge voltage level, such as by repeatedly discharging the capacitors when coupled in series and partially recharging one or more capacitors of the capacitors when coupled in parallel until the voltage across the capacitors coupled in series is approximately equal to the discharge voltage level. To discharge the capacitors, the processing circuitry is configured to discharge the capacitors when coupled in series to respective intermediate threshold voltage levels of a plurality of intermediate threshold voltage levels, and to partially recharge the one or more capacitors, the processing circuitry is configured to, in response to a voltage across the capacitors coupled in series reaching the respective intermediate threshold voltage levels, charge the one or more capacitors to respective intermediate common voltage levels of a plurality of intermediate common voltage levels when coupled in parallel.

Abstract: The therapeutic electrical pulse delivery system may include a power source, a pulse generator, and a controller. The pulse generator may be operatively coupled to the power source. The pulse generator may include one or more capacitors. Each of the one or more capacitors may include a first electrode, a second electrode, and a dielectric disposed between the first electrode and the second electrode. The one or more capacitors may include an energy capacity at least 10 percent greater than a maximum energy of therapeutic electrical pulses delivered by the therapeutic electrical pulse delivery system. The controller may include one or more processors and may be operatively coupled to the power source or the pulse generator to charge the one or more capacitors and cause the pulse generator to deliver a therapeutic electrical pulse using the charged one or more capacitors.

Abstract: Therapeutic electrical pulse delivery systems and therapeutic pulse generators are disclosed. The therapeutic electrical pulse delivery system may include a power source, a pulse generator, and a controller. The pulse generator may be operatively coupled to the power source. The pulse generator may include one or more capacitors. Each of the one or more capacitors may include a first electrode, a second electrode, and a dielectric disposed between the first electrode and the second electrode. The dielectric may include a crystalline dielectric including carbon. The controller may include one or more processors and may be operatively coupled to the power source or the pulse generator. The controller may be configured to charge the one or more capacitors of the pulse generator using the power source and cause the pulse generator to deliver a therapeutic electrical pulse using the charged one or more capacitors.

Abstract: An apparatus having a foil pack defining a device enclosure and a fluid conduit defining a fluid channel. The device enclosure may be configured to hold an energy storage device such as a battery or capacitor. The fluid conduit defines a fluid channel configured to allow a flow from the device enclosure through a test port defined by the fluid conduit. The apparatus is configured to establish a vacuum in the device enclosure when a vacuum is established in the fluid channel (e.g., during leak testing of the device enclosure). A scaffolding within the fluid conduit is configured to configured to resist a collapse of the fluid channel when the vacuum is established in the fluid channel.

Abstract: At least one electrochemical cell is charged to a predetermined voltage of the electrochemical cell using an external power source. A charging current of the at least one electrochemical cell is monitored. An increase in the charging current is detected at the predetermined voltage of the at least one electrochemical cell. It is determined that the at least one electrochemical cell is in danger of experiencing a performance decrease based on the detected increase in the charging current.

Abstract: An apparatus having a foil pack defining a device enclosure and a fluid conduit defining a fluid channel. The device enclosure may be configured to hold an energy storage device such as a battery or capacitor. The fluid conduit defines a fluid channel configured to allow a flow from the device enclosure through a test port defined by the fluid conduit. The apparatus is configured to establish a vacuum in the device enclosure when a vacuum is established in the fluid channel (e.g., during leak testing of the device enclosure). A scaffolding within the fluid conduit is configured to configured to resist a collapse of the fluid channel when the vacuum is established in the fluid channel.

Abstract: A capacitor for an implantable medical device is presented. The capacitor includes an anode, a cathode, a separator therebetween, and an electrolyte over the anode, cathode, and separator. The electrolyte includes ingredients comprising acetic acid, ammonium acetate, phosphoric acid, and tetraethylene glycol dimethyl ether. The capacitor has an operating voltage ninety percent or greater of its formation voltage.

Abstract: A capacitor for an implantable medical device is presented. The capacitor includes an anode, a cathode, a separator therebetween, and an electrolyte over the anode, cathode, and separator. The electrolyte includes ingredients comprising acetic acid, ammonium acetate, phosphoric acid, and tetaethylene glycol dimethyl ether. The capacitor has an operating voltage ninety percent or greater of its formation voltage.

Abstract: A capacitor for an implantable medical device is presented. The capacitor includes an anode, a cathode, a separator therebetween, and an electrolyte over the anode, cathode, and separator. The electrolyte includes ingredients comprising acetic acid, ammonium acetate, phosphoric acid, and tetraethylene glycol dimethyl ether. The capacitor has an operating voltage ninety percent or greater of its formation voltage.

Abstract: A capacitor for an implantable medical device is presented. The capacitor includes an anode, a cathode, a separator therebetween, and an electrolyte over the anode, cathode, and separator. The electrolyte includes ingredients comprising acetic acid, ammonium acetate, phosphoric acid, and tetaethylene glycol dimethyl ether. The capacitor has an operating voltage ninety percent or greater of its formation voltage.

Abstract: A capacitor for an implantable medical device is presented. The capacitor includes an anode, a cathode, a separator therebetween, and an electrolyte over the anode, cathode, and separator. The electrolyte includes ingredients comprising acetic acid, ammonium acetate, phosphoric acid, and tetraethylene glycol dimethyl ether. The capacitor has an operating voltage ninety percent or greater of its formation voltage.

Abstract: The invention is directed to designs for capacitors of implantable medical devices (IMDs) such as implantable defibrillators, implantable cardioverter-defibrillators, implantable pacemaker-cardioverter-defibrillators, and the like. The capacitor designs can reduce capacitor volume significantly and may also improve charge holding capacity relative to conventional capacitor designs. Moreover, since capacitors typically comprise a significant portion of the volume of an IMD, significant reductions in capacitor volume can likewise significantly reduce the size of the IMD.

Abstract: A capacitor for an implantable medical device is presented. The capacitor includes an anode, a cathode, a separator therebetween, and an electrolyte over the anode, cathode, and separator. The electrolyte includes ingredients comprising acetic acid, ammonium acetate, phosphoric acid, and tetaethylene glycol dimethyl ether. The capacitor has an operating voltage ninety percent or greater of its formation voltage.

Abstract: A capacitor for an implantable medical device is presented. The capacitor includes an anode, a cathode, a separator therebetween, and an electrolyte over the anode, cathode, and separator. The electrolyte includes ingredients comprising acetic acid, ammonium acetate, phosphoric acid, and tetaethylene glycol dimethyl ether. The capacitor has an operating voltage ninety percent or greater of its formation voltage.

Abstract: The invention is directed to designs for capacitors of implantable medical devices (IMDs) such as implantable defibrillators, implantable cardioverter-defibrillators, implantable pacemaker-cardioverter-defibrillators, and the like. The capacitor designs can reduce capacitor volume significantly and may also improve charge holding capacity relative to conventional capacitor designs. Moreover, since capacitors typically comprise a significant portion of the volume of an IMD, significant reductions in capacitor volume can likewise significantly reduce the size of the IMD.

Abstract: A capacitor for use in implantable medical devices (IMDs) such as implantable defibrillators, implantable cardioverter-defibrillators, implantable pacemaker-cardioverter-defibrillators, and the like stores charge for use in the delivery of high voltage electrical therapy. The capacitor design can reduce capacitor volume significantly and may also improve charge holding capacity relative to conventional capacitor designs. Moreover, since capacitors typically comprise a significant portion of the volume of an IMD, significant reductions in capacitor volume can likewise significantly reduce the size of the IMD.