Synthes Gmbh

Ao Technology Ag

Michael Schuetz

Markus Windolf

Christoph Nötzli

Devakara Epari

Christoph Notzli

Tim Pohlemann

Pohlemann Tim

A device () for drilling holes in bone and configured to determine bone screw length, the device () including a surgical power drill () comprising: a) a housing () and; b) a measuring device () releasably attached or fixed to the housing (), wherein the measuring device () is configured to measure the distance (x) covered by the housing () in the direction of the longitudinal axis () and relative to a surface of an implant () or a bone during a drilling process, wherein the measuring device () comprises a processing unit () to record the distance (x) covered with respect to time; the processing unit () comprises one or more differentiators to determine at least the first and second derivatives of the distance (x) covered with respect to time; and the processing unit () further comprises a peak detector to analyze one or more peaks occurring in the graph of the highest derivative with respect to time, and wherein the measuring device () comprises a laser device or an ultrasound position sensor for displacement assessment.

Surgical power drill including a measuring unit suitable for bone screw length determination

An assembly for correcting unbalanced growth plate activity including: (a) an implant formed of wire having (i) a longitudinal central section (), (ii) a first end () configured as a first loop () in a form of a first helical coil () having a central axis () that is transverse to a longitudinal axis of the central section, and (iii) a second end () configured as a second loop () having a central axis () that is transverse to the longitudinal axis of the central section; (b) a first bone screw having a shaft section that is insertable through the first loop; and (c) a second bone screw having a shaft section that is insertable through the second loop. A kit for correcting unbalanced growth plate activity and to a method for correcting unbalanced growth plate activity are also disclosed.

Device for correcting unbalanced growth plate activity and for orthodontic applications

The bone plate () has a lower surface (), an upper surface (), a thickness T measured between the lower and upper surfaces (), a longitudinal axis () and a plurality of plate holes () running from the lower surface () to the upper surface (). The bone plate () further has a slot () extending from the lower surface () towards the upper surface () and having a width W measured at the lower surface () and parallel to the longitudinal axis (). The slot () extends to a maximum distance D measured from the lower surface () towards the upper surface () of 0.4-0.9 times the thickness T of the bone plate (). The slot () has a width measured parallel to the longitudinal axis () which at its maximum extension E is at least 0.8 mm, preferably of at least 3 mm. The slot () allows the plate () to bend longitudinally&#x2014;additionally to the intrinsic bendability of the unslotted plate ()&#x2014;at most to the amount of 20&#xb0;, preferably at most to the amount of 10&#xb0;. Due to the bi-phasic properties of the bone plate () optimal bending properties and adaptability to anatomical surfaces are achieved.

Bone plate

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St. Lucia, Australia

Michael Schuetz