초록 ▼

The head of a patient is held in place horizontally on the indexable sliding cradle of an X-ray scanner by a vertical ring encircling the head having radiolucent rests supporting the head behind the ears at the mastoid processes and beneath the eyes at the cheekbone area. Adjustable horizontally-pro

The head of a patient is held in place horizontally on the indexable sliding cradle of an X-ray scanner by a vertical ring encircling the head having radiolucent rests supporting the head behind the ears at the mastoid processes and beneath the eyes at the cheekbone area. Adjustable horizontally-projecting instrument support structure is carriage-mounted on an arcuate track in the ring between the forward rests and has a horizontally-bored instrument guide-holder of such density as to appear on an X-ray scan and positionable adjacent to the head with its horizontal bore in the plane of any indexable scanning section of the X-ray scanner. By scanning the head and adjacent guide holder, the holder may be positioned with its bore in the same plane as and on a line directed to a point of interest in the brain. Thereafter, the holder may be utilized to guide a surgical needle to the point of interest.

대표청구항 ▼

Apparatus for use in guidance of insertion of surgical instruments into a patient\s body by use of computer-assisted tomography equipment which provides a plurality of scans in parallel planes, including a scanning throat and a body-supporting cradle axially positionable relative thereto, the appara

Apparatus for use in guidance of insertion of surgical instruments into a patient\s body by use of computer-assisted tomography equipment which provides a plurality of scans in parallel planes, including a scanning throat and a body-supporting cradle axially positionable relative thereto, the apparatus comprising frame-like patient restraint means including means for rigid securement to the body-supporting cradle and having an arcuate track portion in a plane parallel to the planes of such scans, said frame-like means being smaller in its outer dimension than the scanning throat, and surgical instrument support structure mounted adjustably along the arcuate track portion and projecting away from the plane thereof and including an instrument guide-holder having bore means adjustably securable in a plane parallel to such plane, to slidably accept such a surgical instrument, said guide-holder and that portion of the instrument support structure adjacent thereto being constructed of material having a density substantially of the order of that of body tissue, whereby the guide-holder and the axis of its bore means may be shown on such a computer assisted tomography scan.