2021

• Adam, Christian and Barth, Tobias and Münch, Matthias and Seide, Klaus and Krautschneider, Wolfgang H.
  An Electronic Osteosynthesis Implant for Continuous Load Monitoring using a Strain Gauge
  In Tagungsband "2021 IEEE Biomedical Circuits and Systems Conference (BioCAS)", 2021, p. 01-06
  2021 IEEE Biomedical Circuits and Systems Conference (BioCAS), Berlin, 7.-9. October 2021
  Abstract:
  The utilization of strain gauges for monitoring the applied mechanical load to osteosynthesis plates using electronic implants was reported several times in literature. The technique was found to provide valuable information for monitoring the fracture healing process and for improving the rehabilitation. This paper introduces a new electronic osteosynthesis implant, which uses supercapacitors as an energy storage for short term autonomous operation. Moreover, a bluetooth low energy (BLE) transceiver is integrated into the system, which covers larger distances and is less sensitive to misalignment than the commonly used inductive data transmission. This improves the usability of the proposed system for the patients. The system can continuously sample and transmit strain values at a sampling rate of 5 Hz for more than 10 min without being recharged. More than 60 cm of distance in any practically relevant direction can be covered by the BLE data transmission if the implant is placed 5 cm deep in a phantom. The implant dimensions of 20 mm x 16 mm still fit on osteosynthesis plates for larger bones.
  BibTeX:
  @inproceedings{Adam:Osteosynthesis:2021,
  author = {Adam and Christian and Barth and Tobias and M{\"u}nch and Matthias and Seide and Klaus and Krautschneider and Wolfgang H.},
  title = {{A}n {E}lectronic {O}steosynthesis {I}mplant for {C}ontinuous {L}oad {M}onitoring using a {S}train {G}auge},
  year = {2021},
  month = {10},
  booktitle = {2021 IEEE Biomedical Circuits and Systems Conference (BioCAS)},
  note = {2021 IEEE Biomedical Circuits and Systems Conference (BioCAS), Berlin, 7.-9. October 2021},
  pages = {01-06} }
  [Abstract] [BibTeX] [DOI]
  
  
• Faragalla, Mohamed and Krautschneider, Wolfgang and Kuhl, Matthias
  Low-Leakage Differential-Drive Rectifier as 13.56 MHz Inductive Energy Harvester for Deep Medical Implants with Field Exposure Compliance
  In Tagungsband "2021 IEEE International Symposium on Circuits and Systems (ISCAS)", 2021, p. 1-5
  Korea, 22-28 May 2021
  Abstract:
  In this paper, we present a 13.56 MHz energy harvester for arterial pressure measurement implants placed at deep distances in human bodies. A 50 μm diameter thin wire is used to fabricate a 150-turn solenoid coil around a PCB stripe with a cross-sectional area of 1.35 χ 1 mm². The solenoid has a length of 12 mm, low-frequency inductance of 4.75 μΗ, and series resistance of 8 Ω. With this coil and an 11-stage modified differential-drive rectifier, our harvester achieved 698 nW (-31.56 dBm) sensitivity for unloaded output voltage of 1.88 V and maximum receiver efficiency of >72% at -23.5 dBm available power using 0.0228 mm² silicon area in 180 nm technology. A transmission distance of 21 cm was reached under compliance with the field exposure levels set by the IEEE Std. C95.1-2019.
  BibTeX:
  @inproceedings{9401629,
  author = {Faragalla and Mohamed and Krautschneider and Wolfgang and Kuhl and Matthias},
  title = {{L}ow-{L}eakage {D}ifferential-{D}rive {R}ectifier as 13.56 {M}{H}z {I}nductive {E}nergy {H}arvester for {D}eep {M}edical {I}mplants with {F}ield {E}xposure {C}ompliance},
  year = {2021},
  month = {05},
  booktitle = {2021 IEEE International Symposium on Circuits and Systems (ISCAS)},
  note = {Korea, 22-28 May 2021},
  pages = {1-5} }
  [Abstract] [BibTeX] [DOI]
  
  
• Singer, Julian A. and Gelaeschus, Anton and Schuster, Christian and Trieu, Hoc Khiem and Kuhl, Matthias
  Integrierte optoelektronische Systeme basierend auf hochempfindlichen Einzelphotonendetektoren für optogenetische Anwendungen
  In Tagungsband "Mikroelektronik, Mikrosystemtechnik und ihre Anwendungen - Innovative Produkte für zukunftsfahige Markte - MikroSystemTechnik Congress 2021", 2021, p. 212--215
  MST Kongress 2021
  Abstract:
  
  BibTeX:
  @inproceedings{mst21singer,
  author = {Singer and Julian A. and Gelaeschus and Anton and Schuster and Christian and Trieu and Hoc Khiem and Kuhl and Matthias},
  title = {{I}ntegrierte optoelektronische {S}ysteme basierend auf hochempfindlichen {E}inzelphotonendetektoren f{\"u}r optogenetische {A}nwendungen},
  year = {2021},
  booktitle = {Mikroelektronik, Mikrosystemtechnik und ihre Anwendungen - Innovative Produkte für zukunftsfahige Markte - MikroSystemTechnik Congress 2021},
  note = {MST Kongress 2021},
  pages = {212--215} }
  [BibTeX]
  
  

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