Connector assemblies for implantable stimulators

A system comprising:

• an implantable microstimulator comprising
• a single body having a distal end surface, a proximal end surface, and at least one side surface disposed in between the distal and proximal end surfaces,
• electrical circuitry disposed within the single body and configured and arranged to generate electrical stimulation current,
• a rechargeable battery disposed within the single body and coupled to the electrical circuitry, and
• a coil disposed within the single body and coupled to the rechargeable battery and configured and arranged to receive power from an external device;
• and
• a connector assembly configured to be coupled to the microstimulator and extend parallel to the at least one side surface of the microstimulator;
• wherein the connector assembly is further configured to removably receive a portion of a lead and to electrically couple one or more electrodes disposed on the lead to the microstimulator.

A system comprising:

• an implantable microstimulator comprising
• a single body having a distal end surface, a proximal end surface, and at least one side surface disposed in between the distal and proximal end surfaces,
• electrical circuitry disposed within the single body and configured and arranged to generate electrical stimulation current,
• a coil disposed within the single body and coupled to the electrical circuitry and configured and arranged to communicate with an external device, and
• a programmable memory unit disposed within the single body and coupled to the electrical circuitry and the coil, wherein the programmable memory unit is configured and arranged for adjustment of one or more stimulation parameters stored on the programmable memory unit by communication using the coil;
• and
• a connector assembly configured to be coupled to the microstimulator and extend parallel to the at least one side surface of the microstimulator;
• wherein the connector assembly is further configured to removably receive a portion of a lead and to electrically couple one or more electrodes disposed on the lead to the microstimulator.