Activa 3389s

All surgery was taken by the same surgical team. All patients underwent bilateral STN-DBS. Leksell Stereotactic System (Elekta, Stockholm, Sweden) and the Frame Link planning system (Medtronic, Minneapolis, MN) were used for preparation of surgery. According to the Schaltenbrand-Wahren atlas, the tentative target site was 2 mm posterior to the midpoint of the anterior–posterior commissure (AC-PC) line, 12 mm lateral to the AC-PC line, and 4 mm ventral to the AC-PC line. Target sites were corrected based on T2-weighted MRIs. The target was reconfirmed physiologically with an intraoperative microelectrode recording, just prior to performing the test stimulation studies. After all, quadripolar DBS electrodes (Activa 3389s, Medtronic) were implanted bilaterally in stereotactic guide.
After general anesthesia induced, implantable pulse generators (Activa RC Medtronic) were implanted subcutaneously in the subclavian pockets of the chest wall and connected to the DBS leads subcutaneously. Imagines of computed tomography postoperative and MRI preoperative were superimposing in Frame Link planning system to insure the local accuracy of electrode placement.

All surgeries were performed by the same surgical team. All patients underwent bilateral STN-DBS. The Leksell Stereotactic System (Elekta, Stockholm, Sweden) and Frame Link planning system (Medtronic, Minneapolis, Minnesota, USA) were used for surgery preparation. According to the Schaltenbrand-Wahren atlas, the tentative target site was 2 mm posterior to the midpoint of the anterior–posterior commissure (AC-PC) line, 12 mm lateral to the AC-PC line, and 4 mm ventral to the AC-PC line. Target sites were corrected based on T2-weighted MRI. The target was reconfirmed physiologically by an intraoperative microelectrode recording prior to performing the test stimulation studies. Quadripolar DBS electrodes (Activa 3389s, Medtronic) were implanted bilaterally as a stereotactic guide.
After inducing general anesthesia, implantable pulse generators (Activa RC Medtronic) were implanted subcutaneously in the subclavian pockets of the chest wall and connected to the DBS leads. Postoperative computed tomography images and preoperative MR images were superimposed in the Frame Link planning system to insure the local accuracy of electrode placement.