Cerebral instrument guide frame and procedures utilizing it

Details Cerebral instrument guide frame and procedures utilizing it Cerebral instrument guide frame and procedures utilizing it

1993-05-18

1994-07-19

Aschenbrenner, Peter A.

Surgery

Instruments

Stereotaxic device

606 1, 606108, A61B 1700

Patent

active

053304853

ABSTRACT:
A cerebral instrument guide includes first and second arcs with aligned openings adjacent their ends, the openings defining a common axis about which the arcs are pivotal. The rods are mounted for movement along the common axis into contact with a human patient's auditory meati. A nasal bridge fixation element mounted on the first arc, as well as orbit pads, engage the bridge of a patient's nose, and his/her bony orbits. The appropriate angle to which the arcs should be pivoted with respect to each other is calculated by a computer program, as is the position to which a tubular instrument guide, slidable along the second arc and a projection from it intersecting the mid point of the common axis, is to be positioned to mark the burr hole on the patient's skull for performing a neurological procedure, such as a ventriculostomy. A needle is passed through the tubular instrument guide to mark the burr hole site. The cerebral instrument guide frame may be left in place, or removed, while a stereotactic instrument placement guide is used (after the burr hole is formed) to properly position the neurological instrument (e.g. catheter) used to perform the neurological procedure.

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patent: 5269305 (1993-12-01), Corol

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