This paper presents the development of a surgical instrument to measure interaction forces/torques with organic tissue during operation. The focus is on the design progress of the sensor element, consisting of a spoke wheel deformation element with a diameter of 12 mm and eight inhomogeneous doped piezoresistive silicon strain gauges on an integrated full-bridge assembly with an edge length of 500 ?m. The silicon chips are contacted to flex-circuits via flip chip and bonded on the substrate with a single component adhesive. A signal processing board with an 18 bit serial A/D converter is integrated into the sensor. The design concept of the handheld surgical sensor device consists of an instrument coupling, the six-axis sensor, a wireless communication interface and battery. The nominal force of the sensing element is 10 N and the nominal torque is 1 N?m in all spatial directions. A first characterization of the force sensor results in a maximal systematic error of 4.92 \% and random error of 1.13 \%.
%0 Conference Paper
%1 Hessinger2016c
%A Hessinger, Markus
%A Pilic, Tobias
%A Werthschützky, Roland
%A Pott, Peter P.
%B 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
%D 2016
%K imported imt-pott-alt
%T Miniaturized Force/Torque Sensor for In Vivo Measurements of Tissue Characteristics
%U http://tubiblio.ulb.tu-darmstadt.de/82901/
%X This paper presents the development of a surgical instrument to measure interaction forces/torques with organic tissue during operation. The focus is on the design progress of the sensor element, consisting of a spoke wheel deformation element with a diameter of 12 mm and eight inhomogeneous doped piezoresistive silicon strain gauges on an integrated full-bridge assembly with an edge length of 500 ?m. The silicon chips are contacted to flex-circuits via flip chip and bonded on the substrate with a single component adhesive. A signal processing board with an 18 bit serial A/D converter is integrated into the sensor. The design concept of the handheld surgical sensor device consists of an instrument coupling, the six-axis sensor, a wireless communication interface and battery. The nominal force of the sensing element is 10 N and the nominal torque is 1 N?m in all spatial directions. A first characterization of the force sensor results in a maximal systematic error of 4.92 \% and random error of 1.13 \%.
@inproceedings{Hessinger2016c,
abstract = {This paper presents the development of a surgical instrument to measure interaction forces/torques with organic tissue during operation. The focus is on the design progress of the sensor element, consisting of a spoke wheel deformation element with a diameter of 12 mm and eight inhomogeneous doped piezoresistive silicon strain gauges on an integrated full-bridge assembly with an edge length of 500 ?m. The silicon chips are contacted to flex-circuits via flip chip and bonded on the substrate with a single component adhesive. A signal processing board with an 18 bit serial A/D converter is integrated into the sensor. The design concept of the handheld surgical sensor device consists of an instrument coupling, the six-axis sensor, a wireless communication interface and battery. The nominal force of the sensing element is 10 N and the nominal torque is 1 N?m in all spatial directions. A first characterization of the force sensor results in a maximal systematic error of 4.92 \% and random error of 1.13 \%.},
added-at = {2017-10-26T19:04:07.000+0200},
author = {Hessinger, Markus and Pilic, Tobias and Werthsch{\"u}tzky, Roland and Pott, Peter P.},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/27534c395df83e5d0e981c7ee2685be63/droessler},
booktitle = {38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society},
groups = {public},
interhash = {80a5636baf51665d81d88f0c3708d30f},
intrahash = {7534c395df83e5d0e981c7ee2685be63},
keywords = {imported imt-pott-alt},
month = {September},
timestamp = {2018-02-28T22:16:38.000+0100},
title = {Miniaturized Force/Torque Sensor for In Vivo Measurements of Tissue Characteristics},
url = {http://tubiblio.ulb.tu-darmstadt.de/82901/},
username = {droessler},
year = 2016
}
