Orthofix S.r.l.

Texas Scottish Rite Hospital for Children

Orthofiz S.r.l.

Texas Scottish Right Hospital for Children

Andrea Ottoboni

Daniele Venturini

Mikhail L Samchukov

Alexander M Cherkashin

Karen D Standefer

Michele Coati

John D Ross, Jr

John David Ross

Michael Lupatini

Enrico Zandona′

Gianluca Milano

Andrea Zaccaria

Denis Lorenzini

Enrico Zandona

Mario Donnici

Stephen Vincent Blake

Enrico Zandonà

Enrico Zandona'

Enrico Zandoná

Karen Divita Standefer

Nicola Gaburro

Andrea Forcolin Cominotto

The present disclosure relates to external fixation struts and systems utilizing the external fixation struts. The struts include an elongated body comprising a first and a second hollow tubular shaft and include opposite connectors respectively coupled to an end portion of the first or the second shaft and each including a ball and socket joint. One shaft may have an internal diameter that is slightly larger than the external diameter than the other shaft to host internally the other shaft in a slidably and telescopic manner. A clamp element may provide a fast gripping action stopping the telescopic sliding of one shaft inside the other shaft. Each ball and socket joint connector may be structured to allow an angular movement of the corresponding connector with a spherical angle up to at least 90°.

External fixation strut

A clamp for an external fixator, preferably of the quick attachment type comprises at least one first attachment provided with at least one bar housing seat for a bar of the external fixator and/or with at least one screw housing seat for a bone screw; at least one second attachment provided with at least one bar housing seat; a connector which, in a tightened configuration, passes through said first attachment and said second attachment locking the bars and/or bone screws within the bar housing seats and/or the screw housing seats; and which, in an open configuration, frees the entrance to at least the bar housing seat of said second attachment; and auxiliary connection means between said first attachment and said second attachment which are active in said open configuration.

Quick attachment clamp for external fixation systems

An improved orthopaedic external fixation system with removable rails or skates and may include: at least a distal foot fixation element; at least a pair of rails or skates removably connected to the foot fixation element; at least a load sensor associated to at least one of the rails or skates; an electronic apparatus coupled to the load sensor and receiving an electric signal from the load sensor; an electronic controller coupled to the apparatus and issuing at least a flag signal upon detection of a threshold pressure force on said at least one of said rails or skates. This electronic controller may be mounted on the orthopaedic system or may be a structurally independent host device including a controller that is in signal communication with the load sensors.

Orthopaedic external fixation system with removable rails or skates

An orthopedic bone transport system includes an external fixation frame and a cable pulling device. The external fixation frame is attachable to a fixed bone segment with the external fixation frame oriented in a first plane. The cable pulling device includes a main body configured to be secured to the external fixation frame, a reel, and a transmission. The reel is rotatable about said main body and configured to wind up a cable to be secured to a transport bone segment to move said transport bone segment towards said fixed bone segment. The main body is secured to the external fixation frame with an axis of rotation of the reel oriented substantially parallel to the first plane, the axis of rotation of the reel thereby substantially lying on a transverse plane with respect to the fixed bone segment. The transmission drives the reel in order to wind up the cable.

Orthopedic cable bone transport device and bone transport system comprising said device

An external fixation strut includes an elongated body including first and second tubular shafts. Opposite connectors are respectively coupled to one of the shafts and include a ball and socket joint. One shaft has an internal diameter slightly larger than the external diameter of the other to host the other shaft in a slidably and telescopic manner. The shafts of the strut are a synthetic radiolucent plastic material. A clamp element is in proximity of overlapping ends of the shafts for fast gripping action stopping the sliding of one shaft inside the other. A fixation element is manually operated and acts on the clamp element. A sleeve is provided around the central portion of the strut where the shafts overlap. The clamp element is a clamp band around the sleeve and includes opposite and facing gripping portions. The gripping portions are connected by a threaded connector of the fixation element.

Dynamization tabs and methods of use are provided. Dynamization tabs may be used with an external fixation ring or other fixator device as part of a therapeutic treatment of bone fractures or malformations. The device forms a connection between one or more fixation struts and an external fixation ring so as to introduce controllable amounts of movement or dynamization to the arrangement of the struts and the fixator. By introducing controlled amounts of dynamization, therapeutic benefits can be derived in the enhanced, accelerated bone formation, mineralization and remodeling of the underlying bone. Dynamization tabs may comprise a strut connector, a mechanical biasing or dynamizing device, and a ring connector. Many different forms for introducing controlled amounts of dynamization are disclosed.

Dynamization tabs providing component interconnectivity for external fixation devices

An orthopedic spring hinge and associated external fixation systems for the treatment of anatomical joint dysfunctions, and more particularly, to a spring hinge comprising a first base member, a second base member, a flexible first spring having a first longitudinal axis extending from the first base member to the second base member, and a flexible second spring spaced apart from the first spring and having a second longitudinal axis extending from the first base member to the second base member. The spring hinge is configured to have a maximum bending resistance in a first plane extending between the first spring and the second spring and a minimum bending resistance in a second plane orthogonal to the first plane.

Orthopedic spring hinge systems and methods

Walking skates system removably coupled underneath a bottom half-ring of an external ring fixation system comprising a pair of skates, each skate of the pair of skates having a curved bottom profile from which a protruding connection body provided with at least one slot projects, the system further comprising a connecting member having a first end configured to be connected to an opening in the bottom half-ring of the external ring fixation system and a second end provided with a hole for connection to the slot in the connection body of the skate.

Walking skates system removably coupled to an external ring fixation system

Elongated pin () for an external fixator for temporary and/or permanent fixation applications to treat bone fractures and to connect two or more bone fragments to each other, comprising an elongated cylindrical stem () extending along a longitudinal axis (X) and a conical end portion () with a tip and an external thread for inserting the pin () into a bone, wherein said conical end portion () with a tip has an overall length, measured along the longitudinal axis (X), equal to the diameter (d) of the stem () &#xb1;20% of said diameter (d) and wherein the stem () comprises a cylindrical end area () extending adjacent to the conical portion () and having an external thread which extends over a length, measured along the longitudinal axis (X), equal to the diameter (d) of the stem () &#xb1;25% of said diameter (d).

Elongated pin for application of an external fixator

A device () for locking unicortical pins, comprising: a pin-locking arm () provided with two seats () suitable for locking a corresponding number of unicortical pins (); and a connection base (), intended to couple with a connecting body () of an anchoring group () for an external fixator (), locking means () configured to act simultaneously on the seats (), locking in position two unicortical pins () inserted therein, wherein said locking means () comprise deformable spheres () which are passed through by an insertion channel () for the unicortical pins (), and a pressure plate () acting on the seats () for compress both said deformable spheres () locking in position the unicortical pins () inserted in the respective insertion channels ().

Device for locking uni-cortical pins

Monocortical pin () for an external fixator for temporary and/or permanent fixing applications for treating bone fractures and connecting two or more bone fragments together, comprising an elongated cylindrical stem () which extends along a longitudinal axis (X) and a conical portion () with a tip having an external thread for inserting the pin () inside a bone; where said elongated cylindrical stem () has a flattened surface () which lies along a reference plane (A) parallel to the longitudinal axis (X) and said conical portion () with the tip has an overall length, measured along the longitudinal axis, equal to the diameter (d) of the stem () +20% of said diameter (d); said monocortical pin () is characterized in that the conical portion () comprises a tip () which has a centring zone () which extends longitudinally over a length equal to 6-8% of the diameter (d) of the stem (), and a threaded portion (); moreover the conical portion () comprises two base cones (and) having two different angles of conicity, a first base cone () in a distal position with respect to the elongated cylindrical stem () of the monocortical pin and a second base cone () in a proximal position with respect to the elongated cylindrical stem () of the monocortical pin; said first base cone () having an angle of conicity of 13&#xb0;; said second base cone () having an angle of conicity of 26&#xb0;.

Articulated device () for the wrist comprising: a proximal connector () for housing a proximal attachment system for pins; &#x2014;a distal connector () for housing a distal attachment system for pins; an articulator joint () to provide a controlled movement between the proximal connector () and the distal connector (), characterized in that said articulator joint () comprises an arched element () that is rotatably mounted on a support element () in order to enable rotation around an axis of rotation (X) corresponding to the axis of rotation by flexion and extension of the wrist, said arched element () being directly connected to the distal connector (), blocking means () to block the rotation of the arched element () and rotation-limiting means () to limit the rotation of the arched element () for a pre-established portion of a circumferential arc are both directly mounted on said support element (), and in that said support element () is mounted by means of a simple cardan joint () on the proximal connector (), said simple cardan joint () presenting a first axis of rotation (Z) that is perpendicular to the axis of rotation (X) of the arched element and a second axis of rotation (Y) that is perpendicular to the first axis of rotation (Z) and movable with respect to the axis of rotation (X) of the arched element along a circumferential arc whose center is located on the first axis of rotation (Z).

Articulated device for the wrist

The present disclosure relates to an anchoring group for an external fixator, that comprises a connecting body designed to be coupled to a bar of an external fixator. A locking device is connected to the connecting body at a fastening point thereof and comprises a pin locking arm provided with two seats suitable for locking a corresponding number of uni-cortical pins. A connection base is intended to be coupled to a connecting body of the anchoring group. An additional member, also associated with the connecting body, comprises at least one auxiliary seat, not aligned with the seats of the locking device, for locking an additional uni-cortical pin. In an additional embodiment, the connection base of the locking device extends in an angled relationship with respect to the pin locking arm and away from both the seats. The connection base has a point for fastening to the connecting body which is not aligned with said seats.

Anchoring group for external fixator

An anchoring group () for an external fixator (), comprising: a connecting body () designed to be coupled to a bar () of an external fixator (), said connecting body () being crossed by a median plane (M); a first locking device () for locking first unicortical pins and connected to the connecting body (), said first locking device () comprising at least one seat; and a second locking device () for locking second unicortical pins and also connected to the connecting body (), said second locking device () comprising at least one auxiliary seat, which is not aligned with the at least one seat of the first locking device (), said first and second locking devices () extending from different side of said median plane (M), wherein the connecting body () has at least two fastening seats () for each the first and the second locking devices () so as to allow at least two alternative mounting configurations from each side with respect to the median plane (M) of the connecting body ().

Anchoring group for an external fixator

A method for treating a fracture of a bone with a medullary canal. A first and a second group of three elongated monocortical pins are provided. Each pin has a stem with a first end portion having a conical shape with an external thread for insertion into a cortical portion of a bone. Each pin of the first and second group of three monocortical pins is inserted a predetermined distance from the bone fracture, and penetrates only into the cortical portion of the bone without reaching the medullary cavity, the pins of the first and second group being inserted such that they are not coplanar to each other. The stems of the pins of the first and groups are blocked to a first and a second common clamp element respectively. The first and second clamp elements are joined to a common rod to form a rigid external fixation system.

Growing community of inventors

Rovigo, Italy

Andrea Ottoboni