The device was created by a team from Penn State University in the United States, according to the journal of the National Academy of Sciences.
Developed by Pak Kin Wong, a professor of biomedical and mechanical engineering, the device uses micro-technology to capture cells from bacteria that can then be analyzed in an electron microscope.
The device allows doctors to determine, in just 30 minutes, the bacteria present and their reaction to treatment with antibiotics, avoiding the waiting days for laboratory results.
"Currently, we prescribe antibiotics even without knowing if bacteria are present," Wong told AFP. "This is one of the things we want to solve: quickly determine the existence of a bacterial infection."
The researchers say that in addition to determining the presence of the bacteria, the device may reveal its type if its cells are spherical, enlarged or spiral.