Willem Einthoven--the man. The string galvanometer electrocardiograph

1988 ◽  
Vol 148 (2) ◽  
pp. 453-455 ◽  
Author(s):  
I. Ershler
Keyword(s):  
Willem Einthoven ◽  
String Galvanometer

Centenary of tele-electrocardiography and telephonocardiography

2005 ◽  
Vol 11 (7) ◽  
pp. 336-338 ◽  
Author(s):  
N M Hjelm ◽  
H W Julius
Keyword(s):  
Electric Potential ◽  
Beating Heart ◽  
Full Scale ◽  
Academic Hospital ◽  
Telephone Line ◽  
Measuring Device ◽  
Willem Einthoven ◽  
History Of ◽  
String Galvanometer

In the history of electrocardiography the names of two physiologists stand out: Augustus Waller (1865–1922) and Willem Einthoven (1860–1927). Waller was the first to show that the beating heart produces a weak electric potential, which can be registered by a measuring device connected to electrodes attached to the skin. Einthoven developed a 'string' galvanometer, which was much faster and more sensitive than the system used by Waller. Einthoven's electrocardiograph was ready for use in 1903. To facilitate investigations of patients Einthoven connected his instrument to the Academic Hospital in Leyden, by a telephone line, as suggested by his engineering colleague Johannes Bosscha in Delft. The first successful tele-electrocardiogram was transmitted on Sunday 22 March 1905. The heart tones were registered by wiring a specially developed microphone placed on the subject's chest to another string galvanometer. The event was therefore a first both for tele-electrocardiography and for telephonocardiography. We are still awaiting the full-scale implementation of these achievements, 100 years later.

scholarly journals Did Einthoven invent a string galvanometer?

Heart ◽  
1987 ◽  
Vol 57 (2) ◽  
pp. 190-193 ◽  
Author(s):  
H B Burchell
Keyword(s):  
String Galvanometer

scholarly journals Willem Einthoven

2019 ◽  
Vol 40 (37) ◽  
pp. 3075-3078
Keyword(s):  
Willem Einthoven

scholarly journals Willem Einthoven (1860-1927)

2001 ◽  
Vol 71 (3) ◽  
pp. 407-407
Author(s):  
L F HAAS
Keyword(s):  
Willem Einthoven
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