Biologists at the Graz University of Technology in Austria are developing a surgical screw made of donated bones for joining the foot and chin. For decades, the use of metal screws, the main material is titanium or Stainless steel. After the operation or after surgery, these metal screws will be the body as foreign foreign body, often need to move another body to discomfort surgery to remove it.
Osteopologist Klaus Pastl and Glaz University of Technology have developed an alternative screw called Shark Screw, made of human thighs. What are the advantages of screws made with donated bones? And then in the past to remove the metal screws, do not have to move the second operation, because the bone screw and bone will completely heal, or even a year after the X-ray machine to be transplanted into the bone screws.
Palatal bone surgery must be used for about 20mm long and can withstand a lot of stress very small screws, because the volume of the chin muscle is small but the strength of the body which is the strongest muscle. Foot surgery, although the use of screws larger (4 ~ 6 cm long), but will also encounter a lot of strength, such as corrective surgery in the bending force.
The design of the thread will have a great impact on the bending force, the shearing force and the braking torque, and the researcher must investigate and understand the motive force in the foot and chin bone structures.Overall, the use of metal screws and The use of biological materials, the situation of the screw is very different. Their mechanical principles are the same, but must be aware of the bone screw after disinfection will be slightly reduced, and will be two hours after the end of surgery in the body expansion, become more flexible The
Shark screws are currently manufactured by Surgebright, a Austrian company founded in 2016. This patented technology has been used in 14 Austrian hospitals.