Ball joint for neurosurgery

Details Ball joint for neurosurgery Ball joint for neurosurgery

1992-03-04

1993-11-23

Pellegrino, Stephen C.

Surgery

Instruments

Stereotaxic device

606 1, A61B 1700, A61B 1900

Patent

active

052639568

ABSTRACT:
A ball joint for holding a neurosurgery tool in a predetermined orientation relative to a patient's skull has a plate that fits onto the skull. The plate is formed with a socket, and a ball is rotatably positioned in the socket. The ball, in turn, is formed with a bore, and the neurosurgery tool can be positioned in the bore to extend through the bore of the ball into the patient's brain. The ball can accordingly be rotated as appropriate to establish a predetermined orientation of the neurosurgery tool relative to the patient's skull. Set screws are provided to hold the neurosurgery tool stationary relative to the bore of the ball, and to hold the ball stationary relative to the plate. A retainer ring holds the ball against the plate.

REFERENCES:
patent: 2697433 (1954-12-01), Zehnder
patent: 3017887 (1962-01-01), Heyer
patent: 3115140 (1963-12-01), Volkman
patent: 3457922 (1969-07-01), Ray
patent: 4805615 (1989-02-01), Carol
patent: 4809694 (1989-03-01), Ferrara
patent: 4955891 (1990-09-01), Carol
patent: 5030223 (1991-07-01), Anderson et al.
patent: 5163430 (1992-11-01), Carol

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