Patent ID: 8666493

Claim:
An implantable pulse generator, comprising: electrical circuitry configured to generate an electrical pulse, and a biocompatible casing that houses the electrical circuitry and on which a plurality of electrodes and a plurality of fixation elements are mounted, wherein the plurality of fixation elements increase the surface area of the biocompatible casing to reduce the likelihood that the implantable pulse generator shifts after implantation, wherein the electrodes are in electrical contact with the electrical circuitry and the fixation elements are each a rib fixation element or a trench fixation element, wherein the plurality of fixation elements comprises at least two segment fixation elements, wherein each segment fixation element extends around, and spans, a segment of the outer circumference of the biocompatible casing, wherein the segment of the outer circumference is less than the entire outer circumference, wherein the at least two segment fixation elements comprises a first segment fixation element and a second segment fixation element disposed laterally opposite the first segment fixation element, wherein the plurality of electrodes comprises a first electrode that is disposed between laterally opposing ends of the first segment fixation element and the second segment fixation element.