초록 ▼

A method and apparatus for performing stereotactic surgery upon a target within a skull establishes a first, predetermined geometric relationship between a positioning fixture mounted on the skull and a scanning table surface upon which the skull is supported; and that geometric relationship is dupl

A method and apparatus for performing stereotactic surgery upon a target within a skull establishes a first, predetermined geometric relationship between a positioning fixture mounted on the skull and a scanning table surface upon which the skull is supported; and that geometric relationship is duplicated in a phantom fixture. An arc device permits entry into the skull by a medical instrument from a plurality of locations upon the skull.

대표청구항 ▼

A method for performing stereotactic surgery with a medical instrument upon a target within a skull, comprising the steps of: (a) establishing a first, predetermined geometric relationship between a positioning fixture attached to both the skull and to a support surface upon which the skull is dispo

A method for performing stereotactic surgery with a medical instrument upon a target within a skull, comprising the steps of: (a) establishing a first, predetermined geometric relationship between a positioning fixture attached to both the skull and to a support surface upon which the skull is disposed; (b) scanning the skull to produce an image of the target within the skull with respect to the positioning fixture; (c) transferring at least a portion of the positioning fixture to a phantom fixture and disposing the portion of the positioning fixture from the positioning fixture with respect to the phantom fixture to establish a second, predetermined geometric relationship therebetween, which is identical to the first, predetermined geometric relationship, whereby the slope of the skull where the positioning fixture is attached to the skull is duplicated within the phantom fixture; (d) disposing a phantom target within the phantom fixture at a location which corresponds to the location of the target within the skull; (e) determining the trajectory and distance of a medical instrument extending from the positioning fixture portion to the phantom target; (f) attaching the portion of the positioning fixture upon the skull in the same location it was originally attached to the skull; (g) attaching a carrier member, arc member, and instrument guide member to the positioning fixture; and (h) inserting the medical instrument through the instrument guide member, whereby the medical instrument will intersect the target in the skull.