TELEMETRY SYSTEM FOR IN-VIVO MEASUREMENT OF THE LOADING OF AN INTERNAL SPINAL FIXATION DEVICE
TELEMETRY SYSTEM FOR IN-VIVO MEASUREMENT OF THE LOADING OF AN INTERNAL SPINAL FIXATION DEVICE
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DOI：
10.1515/bmte.1994.39.10.251
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发表时间：
1994-10-01
期刊：
影响因子：
--
通讯作者：
ROHLMANN, A
中科院分区：
文献类型：
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作者：
GRAICHEN, F;BERGMANN, G;ROHLMANN, A
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.
