Surgery – Instruments – Stereotaxic device
Patent
1989-11-27
1992-01-14
Thaler, Michael H.
Surgery
Instruments
Stereotaxic device
A61B 1900
Patent
active
050806629
ABSTRACT:
A stereotaxic device for directing a puncturing tool toward a designated target within a patient. A tool guide is provided for directing the puncturing tool toward the target, and a positioning device for positioning the tool guide anywhere on a hemispherical surface from which to direct the puncturing tool toward the target. The positioning device includes an arcuate slider associated with the tool guide, with the designated target at the center of the arc of the slider. A rotator is slidably connected to the arcuate slider for permitting the arcuate slider to slide while maintaining the tool guide at the hemispherical surface. Adjustments are permitted by the following structure to the position of the rotator along mutually perpendicular X, Y and Z axes with respect to the designated target, that rotator being journaled for rotation about one of the axes. A pair of guide rails are affixed to a rectangular base plate. A pair of support columns are slidably connected at one end to a respective one of the guide rails to permit sliding movement therealong. Y-axis controls change the distance between the opposite end of the support columns and the base plate. Horizontal slider rods connect together the support columns at the opposite ends, and slidably carry the rotator. Targeting devices are provided for positioning the support columns, rotator and transfer slider so that the tool guide always guides the puncturing tool to the designated target.
REFERENCES:
patent: 4350159 (1982-09-01), Gouda
patent: 4592352 (1986-06-01), Patil
patent: 4653509 (1987-03-01), Oloff et al.
patent: 4723544 (1988-02-01), Moore et al.
patent: 4750487 (1988-06-01), Zanetti
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