Patent ID: 6283977
Filing Date: 2001-09-04
Classification: A61B

Abstract:
A stereotactic apparatus for use with a stereotactic frame, for mounting to a skull of a patient, and a stereotactic arc mounted to said frame, extending over the skull of the patient, said stereotactic apparatus comprising:a support slide, for being slidably mounted to the arc,a microdrive unit comprising an instrument holder for depth adjustment of an instrument along a depth axis, in an essentially arc parallel plane,an arc perpendicular adjusting means for adjustment of the microdrive unit along an arc perpendicular axis,an arc parallel adjusting means for adjustment of the microdrive unit along an arc parallel axis, wherein the arc perpendicular adjusting means comprises an arc perpendicular slide, which is movably mounted to the support slide, the arc parallel adjusting means is mounted at an end of the arc perpendicular slide, so that by movement of the arc perpendicular slide in a direction along the arc perpendicular axis the arc parallel adjusting means also moves in said direction, andan arc parallel slide movably mounted to the arc parallel adjusting means, the arc parallel slide being positioned at a different level with respect to the arc perpendicular slide,wherein the microdrive unit is rigidly mounted with its top portion to the arc parallel slide, and by movement of the arc parallel slide in the arc parallel direction the microdrive unit also moves in said arc parallel direction.