Stethotron

As blood courses through an aneurysm it can make a blowing sound to the trained ear.  Physicians have known about this since ancient times, but it took the invention of stethoscopes to make that listening easier, and even then a weak sound, as might occur with an early condition, was hard to detect.  Recently, though, Proton Technologies (Alpine, NJ) has introduced its “Stethotron electronic stethoscope,” that switched between amplification with noise filtering (blocking sounds below 300 Hz and above 100 Hz), and without filtering.  The company’s announcement of this did not indicate any digital conversion, but that would make this useful instrument even more useful for data documentation and telemedicine situations.  MORE

Image Credit:  Proton Technologies