Placement guide

Details Placement guide Placement guide

1985-01-25

1988-02-02

Apley, Richard J.

Surgery

Truss

Pad

378162, A61B 1700

Patent

active

047223367

ABSTRACT:
A guide for locating a target object within a visually opaque but x-ray transparent object has a base creating a first reference plane. A vertical post extends upward from the base perpendicular to the first reference plane. First target sighting members, which are at least partially opaque to x-ray are mounted for movement relative to the vertical support member and provide for creating a line parallel to the reference plane through the target. A system is provided for aligning x-ray fluoroscope with the first target. A second target has two target sighting members, one on an arm above the target object and the other on an arm below the target object. The x-ray fluoroscope is aligned with these such that when the x-ray fluoroscope is projecting in a line parallel to the upright support and perpendicular to the reference plane, it extends through opaque sights and through the target. The distance from the second target to the upright support is measured, and the probe is mounted at a predetermined angle, the line of which extends through a point on the vertical post equal to the distance from the post to the second sight divided by the tangent of the predetermined angle.

REFERENCES:
patent: 4058114 (1977-11-01), Soldner
patent: 4602622 (1986-07-01), Bar et al.

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