Stereotaxic device

Claim 1

A STEREOTAXIC APPARATUS FOR SURGICAL TREATMENT OF THE HUMAN BRAIN, COMPRISING: (A) AN OPEN PARTIALLY POLYGONAL PLANAR YOKE HAVING RESPECTIVE FIRST AND SECOND END PORTIONS AND AN INTERMEDIATE PORTION; (B) A FIRST POINTED BELT ENGAGING SAID FIRST END PORTION NEAR ITS END FOR APPLICATION TO THE FRONT OF THE SKULL; (C) A SECOND POINTED BOLT ENGAGING SAID SECOND END PORTION NEAR ITS END FOR APPLICATION TO THE REAR OF THE SKULL; (D) AT LEAST ONE SLEEVE SLIDABLY MOUNTED ON SAID YOKE AND ADAPTED TO BE ADJUSTABLY MOVED ALONG SAID INTERMEDIATE PORTION OF THE YOKE; (E) A THIRD POINTED BOLT ENGAGING SAID SLEEVE FOR APPLICATION TO THE TOP OF THE SKULL; (F) A SUPPORT SLIDABLY MOUNTED ON SAID INTERMEDIATE PORTION OF THE YOKE; (G) A CROSSBAR HELD BY SAID SUPPORT AND ROTATABLE THEREIN; (H) A U-SHAPED PLANAR FRAME COMPRISING A PAIR OF VERTICAL SIDEBARS AND A HORIZONTAL BASE CONNECTED TO EACH OF SAID SIDEBARS, SAID SIDEBARS CONSTITUTING A VERTICAL FRAME OF REFERENCE, AND THE ENDS OF SAID SIDEBARS BEING POINTED FOR APPLICATION TO THE SKULL TO SERVE AS REFERENCE POINTS, EACH OF SAID SIDEBARS BEING SLIDABLY MOUNTED ON THE CROSSBAR, SAID BASE BEING SUBSTANTIALLY PARALLEL TO SAID CROSSBAR; (I) ARRESTING MEANS CONNECTING SAID YOKE AND SAID FRAME FOR FIXING THE DISPOSITION OF SAID FRAME RELATIVE TO SAID YOKE; (J) AN ELECTRODE HOLDER SLIDABLY MOUNTED ON SAID HORIZONTAL CROSSBAR; AND (K) AN ELECTRODE SLIDABLY MOUNTED IN SAID HOLDER SO AS TO BE DISPLACEABLE VERTICALLY IN THE VERTICAL PLANE DEFINED BY SAID SIDEBARS.