External minisplint device

Details External minisplint device External minisplint device

1998-05-20

2000-02-15

Buiz, Michael

Surgery

Instruments

Orthopedic instrumentation

606 57, 606 59, A61B 1760

Patent

active

060247452

ABSTRACT:
An external minisplint device comprises an elongated body (2; 2'; 2"; 2'"; 2.sup.iv ; 101, 102) supporting at least one pair of clamps (3, 4; 3', 4'; 3", 4"; 3'", 4'"; 3.sup.iv, 4.sup.iv ; 103, 104) each of which is capable of securing at least one pair of transverse bone bolts (F, F', F", F'", F.sup.iv, F1). A longitudinal guide (5; 5'; 5"; 5'"; 5.sup.iv ; 105, 106) associated with the elongated body guides the longitudinal translational movement of at least one of the clamps (4; 4'; 4"; 4'"; 4.sup.iv ; 103, 104). The minisplint device further comprises at least one longitudinal adjustment screw (6; 6'; 6"; 6'"; 6.sup.iv ; 107, 108) which can rotate within the elongated body and which engages a corresponding threaded hole (13; 13'; 13"; 13'"; 13.sup.iv ; 135, 136) formed in the clamp capable of translational motion for selectively positioning it along the longitudinal guide. The screw has a head (7; 7'; 7"; 7'"; 7.sup.iv ; 111, 112) which partly projects from the end of the elongated body. The adjustment screw is axially imobilized when it is rotated. The axial immobilizer comprises at least one smooth key, and preferably a pair of smooth gauged keys (16, 16.1; 16', 16.1'; 16", 16.1"; 16'", 16.1'"; 16.sup.iv, 16.1.sup.iv ; 109, 109.1, 110, 110.1) insert in the elongated body in tangential contact with the base of a circular groove (17; 17'; 17"; 17'"; 17.sup.iv ; 124, 125) formed in the head (7; 7'; 7"; 7'"; 7.sup.iv ; 111, 112) of the adjustment screw (6; 6'; 6"; 6'"; 6.sup.iv ; 107, 108).

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