US 5,019,077 AGranted

External splint

AssigneeOrthofix S.r.l.

InventorsGiovanni De Bastiani, Giovanni Faccioli, Roberto Aldegheri, Lodovico R. Brivio

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Abstract

The present invention relates to an external splint which is particularly suitable for application to the pelvis, comprisng a central body consisting of a plurality of members which can be connected together telescopically and do not rotate with respect to each other about their own axes, two screw holding clamps anchored with ball joints to the free ends of the central body and a removable contractor/extender device. An articulated member 22-23, 22-47-23 or 22-50-51-23 consisting of two or more parts can be inserted between parts 20, 21 of the central body allowing the said parts 20, 21 to rotate in a single plane containing the longitudinal axes of parts 20, 21 and at right angles to the plane passing through axes 25, 26 of the seats for the pins of the contractor/extender device. This rotation takes place around at least one of the pivot pins 24 which couples together the parts of the said articulated member.

Claims15

Dependent claims

An external splint, particularly suitable for application to the pelvis, comprising:

first and second screw-holding clamps;
and
a central body connected between said screw-holding clamps, said central body comprising first, second, third and fourth elongated members and first and second ball joints coupling said central body to said first and second clamps, respectively;
and wherein:
said first elongated member has one end portion coupled to said first ball joint and a second end portion telescopically engaging a corresponding first end portion of said second elongated member;
said second elongated member has a second end portion which forms a first part of a pivot joint;
said third elongated member has one end portion forming a second part of the pivot joint, said two parts of the pivot joint being pivotally journalled to allow movement of said second and third elongated members in a single plane;
said third elongated member has a second end portion adapted to telescopically engage with a first end portion of a fourth elongated member;
said fourth elongated member has a second end portion coupled to said second ball joint;
each of said telescopically engaging end portions have axial guide and locking means for preventing rotation and to selectively immobilize said telescopically engaging members;
said ball joints include means for immobilizing the ball joints of the screw-holding clamps relative to said central body;
and said first and second parts of said pivot joint includes means for immobilizing said first and second parts of said pivot joint.

9 more elements

Dependencies are inferred from the claim text.