Further research is already in the pipeline

The sensor produces reliable measurement data, as numerous experiments with artificial tissues – mixtures of gelling agent, glass ballotini and graphite powder, which depending on the mixing ratios allow different types of tissue to be simulated – have demonstrated. Not only that, it is also economic to manufacture, being very much cheaper than the existing electronic versions. The next step is to test the accuracy of the new method using various animal tissues, since each material has its own acoustic signature because it reflects and absorbs ultrasonic energy differently.

In addition, the Empa scientists are investigating the idea of making the sensor out of biodegradable materials, in which case the device would simply dissolve away in the patient’s body after completing its task. The surgeon need not therefore sharpen his scalpel a second time, there being no need to remove the sensor when the fracture has healed! And finally, there is the outstanding matter of finding an industrial partner to manufacture the sensors and integrate them into the implants.

Further information:

• Felix Gattiker, Electronics / Metrology / Reliability Laboratory,
  Tel. +41 44 823 43 30, felix.gattiker@empa.ch

Editor:

• Cornelia Zogg, Communication Dept., Tel. +41 44 829 40 77, cornelia.zogg@empa.ch