Surgery – Truss – Perineal
Patent
1979-01-18
1980-09-02
Frinks, Ronald L.
Surgery
Truss
Perineal
128 84B, 128 92A, 128 92E, 128303R, A61F 500, A61B 1718
Patent
active
042201462
ABSTRACT:
A biplanar joint distractor to be used in arthroplasty for reversibly separating two articulated bones joined by at least one ligament while preserving the latter. The joint distractor comprises a pair of pins each to be removably introduced transversally through one of the bones to be separated and a pair of mechanically adjustable means fixable onto the pins at a predetermined distance on both sides of the bones for forcing the latter apart. The adjustable means comprises a pair of at least partially threaded rods extending generally perpendicular to said pins; first means for rigidly fixing each rod by one of its ends to one end of said pins; second means slidably mounted on each of said rods, including means thereon for clamping the ends of the other pin; and a pair of operating wheels each threadably mounted on the threaded portion of one of said rods between said first and second means. In operation, rotation of the operating wheels in one direction brings the same in contact against the second means and forces the latter to slide along the rods apart from the first means while rotation of the wheels in the other direction lets the second means freely slide back along the rods towards the first means.
REFERENCES:
patent: 2055024 (1936-09-01), Bittner, Jr.
patent: 3976061 (1976-08-01), Volkov et al.
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