Telemetrisches Übertragungssystem zur In-vivo-Messung der Belastung des Wirbel-Fixateur interne. Telemetry System for In Vivo Measurement of the Loading of an Internal Spinal Fixation Device
- 1 January 1994
- journal article
- abstracts
- Published by Walter de Gruyter GmbH in Biomedizinische Technik/Biomedical Engineering
- Vol. 39 (10), 251-258
- https://doi.org/10.1515/bmte.1994.39.10.251
Abstract
For stabilizing fractures of the spine, a number of implantable devices are available. However, not much is known about the loads acting on these devices. In order to measure the forces and moments within the implant, the Dick internal fixation device was modified and fitted out with a hermetically sealed inductively powered telemetry unit. An integrated 8-channel telemetry chip was specially developed to measure the signals of six strain gauge sensors, the temperature of the implant and the supply voltage. Since the internal fixation devices are always implanted in pairs, two telemetry units are operated at the same time. This article details the function of the implanted electronic circuit and the external system components.Keywords
This publication has 3 references indexed in Scilit:
- A spinal fixation device for in vivo load measurementJournal of Biomechanics, 1994
- Hip joint loading during walking and running, measured in two patientsJournal of Biomechanics, 1993
- Multichannel strain gauge telemetry for orthopaedic implantsJournal of Biomechanics, 1988