A particular implantable device includes one or more electrode connectors and multiple circuit elements within a housing. The implantable medical device may also include one or more switches, where each switch of the one or more switches is coupled between one or more of the multiple circuit elements and at least one electrode connector of the one or more electrode connectors.

Digital-to-Analog (DAC) circuitry for an implantable pulse generator is disclosed which is used to program currents at the electrodes. Calibration circuitry allows the positive and negative currents produced at each electrode to be independently calibrated to achieve an ideal (linear) response across a range of amplitude values provided to the DAC circuitry by a digital amplitude bus. The calibration circuitry includes electrode gain and electrode offset circuitry for each of the electrodes. Current range DAC circuitry is also provided which can be used to adjust the gain and offset current at all of the electrodes. The current range DAC circuitry is particularly useful when spanning a range of therapeutic currents for a patient, and allows all possible amplitude values provided by the digital bus to be used to span the range. This can improve (reduce) the current resolution of the electrode currents with each amplitude value step.

Digital-to-Analog (DAC) circuitry for an implantable pulse generator is disclosed which is used to program currents at the electrodes. Calibration circuitry allows the positive and negative currents produced at each electrode to be independently calibrated to achieve an ideal (linear) response across a range of amplitude values provided to the DAC circuitry by a digital amplitude bus. The calibration circuitry includes electrode gain and electrode offset circuitry for each of the electrodes. Current range DAC circuitry is also provided which can be used to adjust the gain and offset current at all of the electrodes. The current range DAC circuitry is particularly useful when spanning a range of therapeutic currents for a patient, and allows all possible amplitude values provided by the digital bus to be used to span the range. This can improve (reduce) the current resolution of the electrode currents with each amplitude value step.

Overvoltage protection circuitry configured to protect internal integrated circuits within an implantable device in the presence of a high voltage event such as defibrillation or electrocautery. The circuitry allows for an internal node to rise above the voltage level of the high voltage event to insure that an overvoltage protection element is triggered, even if the voltage level of the high voltage event is below the voltage trigger level of the overvoltage protection element.

An arrangement is disclosed including a patient support apparatus with a support plate and an overlay for the support plate. In an embodiment, the support plate or overlay includes an electrically conductive first layer. The first layer is connected and/or connectable to a contact-making apparatus via a first electric transmission path. The contact-making apparatus is connected and/or connectable to a ground or mass via a second electric transmission path. And, in an operating mode of the arrangement in which a patient is supported on the patient support apparatus, the first layer is connected and/or connectable to the patient via a third electric transmission path.

A magnetic connecting device for closing an electrical circuit through the use of magnetic force and contact plates. The contact plates are configured and shaped in a manner which allows for swiveling without disconnecting.

A magnetic connecting device for closing an electrical circuit through the use of magnetic force and contact plates. The contact plates are configured and shaped in a manner which allows for swiveling without disconnecting.

Overvoltage protection circuitry configured to protect internal integrated circuits within an implantable device in the presence of a high voltage event such as defibrillation or electrocautery. The circuitry allows for an internal node to rise above the voltage level of the high voltage event to insure that an overvoltage protection element is triggered, even if the voltage level of the high voltage event is below the voltage trigger level of the overvoltage protection element.

Overvoltage protection circuitry configured to protect internal integrated circuits within an implantable device in the presence of a high voltage event such as defibrillation or electrocautery. The circuitry allows for an internal node to rise above the voltage level of the high voltage event to insure that an overvoltage protection element is triggered, even if the voltage level of the high voltage event is below the voltage trigger level of the overvoltage protection element.

The present invention is a method and system for storing charge on a body and subsequently electrically grounding that body so the body can operate without the unwanted effects of an electrical charge. The system of the present invention comprises an electrical conducting medium, which may be a human body, a capacitance article, and a grounding apparatus. In use the capacitance article is connected to the electrical conducting medium to reduce the buildup of electrical charge on the electrical conducting medium and instead store the charge in the capacitor of the capacitance article. The electrical conducting medium may then be connected to the grounding apparatus at a predetermined interval remove any built-up charge on both the capacitance article and the electrical conducting medium by putting those components in electrical continuity with the ground.