Surgery – Instruments – Stereotaxic device
Patent
1996-01-16
1998-07-21
Hafer, Robert A.
Surgery
Instruments
Stereotaxic device
378206, A61B 1900
Patent
active
057828423
ABSTRACT:
A device for marking a planned guide path of a medical instrument such as a puncture needle is disclosed. The device incorporates two sources of electromagnetic radiation, such as lasers, which produce two light rays. The intersecting line of the light rays marks the guide path for the puncture needle. Deviations of the angle position of the puncture needle from the planned guide path are visible by examining the reflection of the light from the puncture needle. Different colors of light may be used with the light rays being formed in a fan-shape in a common plane. In this manner, the color of the reflected light on the surface of the puncture needle changes depending on whether the puncture needle is located at the intersection of the light rays.
REFERENCES:
patent: 3117480 (1964-01-01), Peddinghaus
patent: 4538289 (1985-08-01), Scheibengraber
patent: 4836671 (1989-06-01), Bautista
patent: 5662111 (1997-09-01), Cosman
Frahm Christian
Kloess Wolfgang
Daum GmbH
Hafer Robert A.
Yu Justine R.
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