2022

• Barth, Tobias and Münch, Matthias and Seide, Klaus and Adam, Christian and Krautschneider, Wolfgang and Schulz, Arndt-Peter
  Additive manufactured versus traditional osteosynthesis plates - a finite element analysis
  Artikel in "Transactions on Additive Manufacturing Meets Medicine", vol. 4, Nr. 1, p. 644--644, 2022
  Number: 1
  Abstract:
  Additive Manufacturing (AM) is rapidly gaining acceptance in healthcare. Due to 3D printing of polyetheretherketone (PEEK) constructions almost any complex geometry, e. g. bio-mimicking implants or light-weight hollow implant bodies, can be produced. In this paper a direct comparison between PEEK and titanium osteosynthesis plates is achieved with a finite element analysis. By that, pros and cons of PEEK as implant material are discussed and different use cases are identified. For the comparison a generic osteosynthesis plate for diaphysis is designed. The exceeding of the yield strength even at low bending and torsional loads highlights the problems that occur when applying PEEK implants at locations which are affected by moderate mechanical loads. Since fracture stabilisation is the main function of osteosynthesis plates, stiffness is a highly relevant property of these. Therefore, a direct exchange of titanium to PEEK would increase the risk of non-union. Thus, a different structure or an improved material, e. g. carbon fibre PEEK composite, is required for loaded locations to replace metallic implants.
  BibTeX:
  @article{barth:additive:2022,
  author = {Barth and Tobias and M{\"u}nch and Matthias and Seide and Klaus and Adam and Christian and Krautschneider and Wolfgang and Schulz and Arndt-Peter},
  title = {{A}dditive manufactured versus traditional osteosynthesis plates - a finite element analysis},
  year = {2022},
  month = {09},
  journal = {Transactions on Additive Manufacturing Meets Medicine},
  note = {Number: 1},
  number = {1},
  pages = {644--644},
  volume = {4} }
  [Abstract] [BibTeX] [DOI]
  
  
• Patrick Kleinschnittger, Andreas Bahr, Wolfang Krautschneider
  Anregungsimpulsbasierte Impedanzspektroskopie alkalischer und erdalkalischer Lösungen
  aug 2022
  Beim Biosignale Workshop 2022
  Abstract:
  Die Impedanzspektroskopie ermöglicht interessante Anwendungen bei der Analyse von biologischem Material. Da bei einer Messung die Superposition aller die Impedanz beeinflussenden Effekte gemessen wird, ist die Interpretation der Messergebnisse häufig sehr schwierig, eine Untersuchung einzelner Bestandteile einer Probe nur bedingt möglich. Eine mögliche Lösung dieses Problems stellt die anregungsimpulsbasierte Impedanzspektroskopie dar. Bei diesem neuen Messverfahren wird ein monophasischer Rechteckpotentialimpuls an die Probe angelegt und die Stromantwort des Systems gemessen. In dieser Arbeit werden vier verschiedene Ionenlösungen verglichen. Basierend auf dem Relaxationsverhalten der Lösungen kann zwischen alkalischen und erdalkalischen Lösungen unterschieden werden.
  BibTeX:
  @misc{Kleinschnittger:Impedanz:2022,
  author = {Patrick Kleinschnittger and Andreas Bahr and Wolfang Krautschneider},
  title = {{A}nregungsimpulsbasierte {I}mpedanzspektroskopie alkalischer und erdalkalischer {L}{\"o}sungen},
  year = {2022},
  month = {08},
  howpublished = {Workshop Beitrag},
  note = {Beim Biosignale Workshop 2022} }
  [Abstract] [BibTeX]
  
  
• Nico Hinz, Julius Dehoust, Matthias Münch, Klaus Seide, Tobias Barth, Arndt Peter Schulz, Karl-Heinz Frosch, Maximilian Hartel
  Biomechanical analysis of fixation methods in acetabular fractures : a systematic review of test setups
  Artikel in "European Journal of Trauma and Emergency Surgery", vol. 48, p. 3541-3560, 2022
  Abstract:
  
  BibTeX:
  @article{Barth:Fracturefixation:2022,
  author = {Nico Hinz and Julius Dehoust and Matthias M{\"u}nch and Klaus Seide and Tobias Barth and Arndt Peter Schulz and Karl-Heinz Frosch and Maximilian Hartel},
  title = {{B}iomechanical analysis of fixation methods in acetabular fractures : a systematic review of test setups},
  year = {2022},
  month = {03},
  journal = {European Journal of Trauma and Emergency Surgery},
  pages = {3541-3560},
  volume = {48} }
  [BibTeX] [DOI]
  
  
• Lukas Rennpferdt, Patrick Kleinschnittger, Andreas Bahr, Hoc Khiem Trieu
  3D printed silicone spinal cord implant withsub-millimeter feature size
  Artikel in "Transactions on Additive Manufacturing Meets Medicine", vol. 4, Nr. 1, 2022
  Abstract:
  Spinal cord injury (SCI) can lead to the dysfunction of nerve fibers by hemi- or complete transection, resulting in permanent paraplegia. In recent years, a number of therapies have been developed to treat spinal cord injury. A mechanical microconnector system (mMS) that supports the regeneration of nerve fibers after SCI through a combination of different therapies was designed in previous works. For this implantable mMS with minimum feature size of a few hundreds of micrometers, it is essential to provide fast, flexible, three-dimensional fabrication. This paper describes a new fabrication method of the mMS made of silicone using additive manufacturing based on a commercially available material jetting printer. The application of this technology advances the fabrication and adaptability of mMS in terms of higher elasticity of the implant using silicone and additionally with respect to high customizability and rapid prototyping using additive manufacturing. We show the successful adaption and realization of a silicone-based mMS dimensioned for a human model with structure sizes down to 300 μm. We elaborate the advantages and disadvantages of additive, silicone-based 3D printing for this application in comparison to molding-based and subtractive 3D printing methods, thus demonstrating the relevance of this technology for medical application.
  BibTeX:
  @article{Rennpferdt:3D-Druck:2022,
  author = {Lukas Rennpferdt and Patrick Kleinschnittger and Andreas Bahr and Hoc Khiem Trieu},
  title = {3{D} printed silicone spinal cord implant withsub-millimeter feature size},
  year = {2022},
  journal = {Transactions on Additive Manufacturing Meets Medicine},
  number = {1},
  volume = {4} }
  [Abstract] [BibTeX] [DOI]
  
  

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