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Im Jahr 1504 verlor der deutsche Ritter Gottfried („Götz“) von Berlichingen seine
rechte Hand. Schon während seiner Genesung dachte er daran, die Hand zu ersetzen,
und beauftragte bald darauf die erste Handprothese, die sogenannte „Eiserne Hand“.
Jahre später wurde die aufwändigere zweite „Eiserne Hand“ gebaut. Wir haben die erste
Prothese auf der Basis früherer Literaturdaten von
Quasigroch (1982) mit Hilfe von 3-D
Computer-Aided Design (CAD) rekonstruiert. Dazu mussten einige Abmessungen angepasst
und ein paar Annahmen für das CAD-Modell gemacht werden. Die historische passive
Prothese des Götz von Berlichingen ist für die moderne Neuroprothetik interessant, da sie
eine Alternative zu komplexen invasiven Brain-Machine-Interface-Konzepten darstellen
könnte, wo diese Konzepte nicht notwendig, möglich oder vom Patienten gewünscht sind.
Knight Götz von Berlichingen (1480–1562) lost his right hand distal to the wrist due to a cannon ball splinter injury in 1504 in the Landshut War of Succession at the age of 24. Early on, Götz commissioned a gunsmith to build the first “Iron Hand,” in which the artificial thumb and two finger blocks could be moved in their basic joints by a spring mechanism and released by a push button. Some years later, probably around 1530, a second “Iron Hand” was built, in which the fingers could be moved passively in all joints. In this review, the 3D computer-aided design (CAD) reconstructions and 3D multi-material polymer replica printings of the first “Iron hand“, which were developed in the last few years at Offenburg University, are presented. Even by today’s standards, the first “Iron Hand”—as could be shown in the replicas—demonstrates sophisticated mechanics and well thought-out functionality and still offers inspiration and food for discussion when it comes to the question of an artificial prosthetic replacement for a hand. It is also outlined how some of the ideas of this mechanical passive prosthesis can be translated into a modern motorized active prosthetic hand by using simple, commercially available electronic components.
Note: In lieu of an abstract, this is an excerpt from the first page.
Recently, we reported the three-dimensional computer-aided design (3D-CAD) reconstruction of the first “Iron Hand” of the famous Franconian knight, Götz von Berlichingen (1480–1562), who lost his right hand by a cannon ball splinter injury in 1504 in the War of the Succession of Landshut [...]