US Patent 8649880 Deployable stimulator array and method of use

This invention provides a percutaneous implantable electrode array that can be deployed or repositioned though a needle insertion site. The deployable electrode apparatus, in one embodiment, is made of a fixed electrode array on a central body of the apparatus and a deployable electrode array. The deployable electrode array is actuated by at least two struts, each of the struts having a first and second end. The central body of the apparatus is configured to retain the first end of the at least two struts. Each of the side arrays are flexurally connected to the second end of each of the strut and the side arrays are connected to at least one stylet, which extends to the proximal end of the apparatus.