Digital Stethoscope 電子聽診器

choi

Steve Lohr, With New Stethoscope, Take a Deep Breath, Then Consult Your Phone; A 21st-century update for 200-year-old medical tool gets FDA approval. New York Times, Sept 3, 2015.
http://bits.blogs.nytimes.com/20 ... the-smartphone-era/

Note:
(a) It was published.
(b) "Last Friday [Aug 28], the fledgling company [Berkeley, Calif -- based Eko Device]received approval from the Food and Drug Administration to market its Eko Core, a digital device that attaches to a conventional stethoscope and allows it to record, amplify and wirelessly send audio and sound wave images to an iPhone application. * * * The Eko Core device goes on sale on Wednesday [Sept 2], priced at $199, and a complete stethoscope with the same capabilities will sell for $299."
(c) "The stethoscope was invented in 1816 by a French physician, René Laënnec. His first version was essentially a hollow wooden tube, and embarrassment, it seems, was the impetus for his invention. He was apparently uncomfortable putting his ear on women’s chests to hear their heartbeats. * * * digital stethoscopes have been available for about two decades. But the previous generation of digital models, cardiologists say, have often been bulky and complicated to use and were not able to send recordings and data wirelessly to a smartphone."

René Laënnec
https://en.wikipedia.org/wiki/René_Laennec
(1781 – 1826; died of tuberculosis; section 2 Invention of the stethoscope)

(d) "There are cardiologists who regard the stethoscope as a relic that should be jettisoned, given the scientific precision of ultrasound technology and echocardiograms."
(i) It is untrue. Stethoscope is simple, costs nothing and can do a lot that ultrasound can not do--particularly lung conditions (ultrasound sound can not reflect from air).
(ii) Echocardiography
https://en.wikipedia.org/wiki/Echocardiography
(is a sonogram of the heart)

The distinction is "heart," as ultrasound can be used in other organs.
(iii) etiology for echocardiography: Greek ekhe sound + kardia heart + graphein to record

(e) How It Works. Eko Device, undated
https://ekodevices.com/how_it_works

is not helpful, maybe because there is nothing more to say rathern than an attempt to keep a trade secret.