(Wellenzeichner nach Fick.)
Description: This is a device to amplify the pressure tracing of
a blood-pressure wave. The blood pressure changes, transmitted by
air pressure, from the transducer through a thin rubber tube to a
small capsule which expands and contracts, moving an elastic
spring, through which actuates a reed(like) lever, which
amplifies the movement of the writing bristle. Through a variety
of means, the extent of amplification can be varied. (Expanded
caption Copyright 1998, Edward J. Haupt)
(Source: Langendorff, Physiologische Graphik, p. 216.)
Source of illustration: Zimmermann, E. (1903). XVIII. Preis-
Liste über psychologische und physiologische Apparate
(p. 98). Leipzig: Eduard Zimmermann.
DESCRIPTORS:
Type: Component, amplifying
Stimulus:
System:
Output: Bristle movement