Untersuchungen über die Wirksamkeit von Wiederbelebungsmassnahmen bei Experimenteller Erstickung

Koeppen, Siegfried

doi:10.1007/bf01777906

Cited by 3 publications

(3 citation statements)

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“…He could not convince a manufacturer to commercialize the device until the local New York branch of the Siemens Company accepted the project during the 1930s 29 . Siemens then had the Hyman pacemaker evaluated by a German resuscitation investigator who found it ineffective in the experimental animal 30 . Despite Hyman's repeated intimations of successes with animals and humans, at one time he conceded that an earlier version of his pacemaker had itself been ineffective.…”

Section: Cardiac Pacing Before 1950mentioning

confidence: 99%

The Early History of Cardiac Pacing

Furman

2003

Pacing Clinical Electrophis

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Section: Cardiac Pacing Before 1950mentioning

confidence: 99%

The Early History of Cardiac Pacing

Furman

2003

Pacing Clinical Electrophis

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“…Siemens had provided a German investigator with a Hyman unit for efficacy testing and he had published a scathingly negative report about Hymanotor efficacy, possibly causing Siemens to suspend further investigation of the Hyman pacemaker as a potential product. It is not known whether the device tested was electrically identical to the device described by Hyman or it had been operationally modified 13 …”

Section: Introductionmentioning

confidence: 99%

Reconstruction of Hyman's Second Pacemaker

Furman¹,

Szarka²,

Layvand³

2005

Pacing Clinical Electrophis

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Though journal articles and newspaper reports suggest that three Hyman pacemakers existed or were intended; a patent, descriptive photographs and a written description of an earlier model and only a photograph of a later model exist. A replica of the earlier has been made based on the patent and description, and a new replica of the second based on a critical deconstruction and analysis of the photograph of the second with a modern circuit duplicating the function of the earlier circuit. Both replicas were "operational" in that stimuli were mimicked though not delivered and neither could under any circumstances actually resuscitate the heart. The design and construction of the second Hyman pacemaker are presented.

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“…From his descriptions it is also inescapable that he was describing a different condition than any for which cardiac pacing is, today, used. 18,25 The most detailed claim for the clinical use of Hyman's pacemaker did not appear in print until 1972, the year of the inventor's death. Historian David C. Schechter had contacted Hyman some time before 1972 to inquire about the artificial pacemaker.…”

mentioning

confidence: 99%