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Orthopedic surgeons “draw” regenerating bone material on body with “BioPen” prototype

http://media.uow.edu.au/news/UOW162803

Researchers from the Australian Research Council Centre of Excellence for Electromaterials Science at the University of Wollongong unveiled a prototype of an orthopedic surgery aid they call “BioPen”.  They claim that it enables customized implants to be created at the time of surgery, eliminating the need to harvest cartilage and grow it for weeks in a lab as a replacement for damaged or diseased material.

Professor Peter Choong is leading the effort to optimize cell material for clinical trials, which is ejected from the pen in a method similar to 3D printing.  

The device has two reservoirs filled with ”hydrogels”. The gel provides embedded cells with a hydrated environment and protection from the build-up of pressure as they are pushed towards the nozzle tip. An ultraviolet light is cast over the material as it emerges, causing the gel to form a hard, protective layer over the embedded cells, which multiply and differentiate into nerve, muscle or bone cells. The implantable materials are non-toxic and will biodegrade as the cells fill in the injured bone area.

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