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.

Abstract: The invention is a self-gradually locking chuck for drills and similar devices. It is particularly suitable for portable drills in surgical use. The chuck has a cylindrical sleeve that can be fixed axially to the shaft of a drill and predominantly tapering ferrule with lobes. The ferrule can be axially engaged with the sleeve. Means for centering a tool and at least one spring are located within a hollow space in the sleeve. The chuck also has a mounting with a passage and holes for housing jaws. The mounting and the ferrule are axially movable with respect to each other and the sleeve. Jaws, located in the holes and urged toward the axis of the chuck by the lobes, hold a tool that has been inserted between the jaws. The chuck further has an annular ring which can be screwed onto an externally threaded portion of the mounting projecting from the ferrule. The annular ring serves to engage the tool in a locked condition to prevent accidental release of the tool by the chuck.

Abstract: A self-gradually locking chuck for drills or similar devices particularly suitable for portable drills used in surgery. It includes a cylindrical sleeve which can be coaxially fixed to a rotating shaft, a ferrule having a conical section provided internally with lobes, a cylindrical portion at one of its ends for engagement with said sleeve and a cylindrical portion at the other end. A first mounting, perforated longitudinally by a hole, includes a central portion having locking jaws which are movable in holes in a direction convergent upon the axis of the chuck and two second mountings opposite to the central body. A spring and centering device are provided. A cylindrical ferrule is threaded to a part of the first mounting as it projects from the first-mentioned ferrule. The first mounting and ferrule move axially in relation to each other and in relation to the cylindrical sleeve in which the ferrule can be releasably secured to the cylindrical ferrule by a retaining device.

Abstract: The invention contemplates orthopedic external minifixation apparatus comprising two articulated members having two clamps, each of which is carried by a different one of the articulated members. The articulating connection between members includes provision for simple and rapid alignment of the articulation axis with the articulation axis of the joint between two bones to be treated, thereby permitting early functional re-education and reduction of healing time. In its preferred form, several embodiments are disclosed.

Abstract: Apparatus for the external setting or securing of the parts of a fractured bone, comprising an elongate central body member comprised of two parts mutually displaceable parallel to the longitudinal axis of said member, whereby each part of the central body member supports a clamping device for the pins to be inserted into a part of the bone. The two mutually displaceable parts are engaged by a pressing and tensioning device causing the mutual longitudinal displacement of the part. When the pins are inserted in the bone parts to be pressed together, the pressing and tensioning device is actuated until the two bone sections abut against each other at the required pressure. Then the securing devices fix the two parts of the central body member into their position. Subsequently, the pressing and tensioning device is removed from the central body member since it is no longer required.

Abstract: Apparatus for the external setting or securing of the parts of a fractured bone, comprising an elongate central body member comprised of two parts mutually displaceable parallel to the longitudinal axis of said member, whereby each part of the central body member supports a clamping device for the pins to be inserted into a part of the bone. The two mutually displaceable parts are engaged by a pressing and tensioning device causing the mutual longitudinal displacement of the part. When the pins are inserted in the bone parts to be pressed together, the pressing and tensioning device is actuated until the two bone sections abut against each other at the required pressure. Then the securing devices fix the two parts of the central body member into their position. Subsequently, the pressing and tensioning device is removed from the central body member since it is no longer required.