Abstract: Systems and methods for improved user experience with rechargers for implantable medical devices. An external charging device for providing power to a rechargeable implantable device can determine a firmware state of the external charging device during recharging of the rechargeable implantable device, display a searching indication using a light indicator when the firmware state is determined to be in a searching state, display a charging indication using the light indicator when the firmware state is determined to be a charging state, and display an error indication using the light indicator when the firmware state is determined to be an error state. An optional user device application can provide complementary graphical user interfaces according to the firmware states.

Abstract: Processes for dividing the arc of an angle and its angle into “n” number of equal parts. The same processes apply to dividing the arc of a wave of any amplitude into “n” number of equal lengths. The number of equal divisions to be derived may be either an even number or an odd number. The number of degrees in the arc of a circle or the angle of the circle, or in the arc of a wave or its amplitude, need be known.

Abstract: The portion of the lead which is soldered between electrical components in a circuit module includes one or more radially extending slits. Once heated, the fluid solder is drawn into the slits by capillary action. Trapped air escapes, eliminating air pockets or gaps. The result is a stronger joint and a reduction in solder overflow.