Institute for
Robotics and Process Control

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Material properties of nasal tissues: experimental estimation

A robotic system to determine biomechanical properties of nasal structures


Robotic systems allow precise movements and a wide range of tasks, permitting several biomechanical tests to be implemented. We describe the actuation of a microindenter robotic system, that is used to measure forces and deformations during mechanical experiments on human and porcine nasal structures. The knowledge of biomechanical properties of these structures is a prerequisite to the development of endonasal surgical simulators, surgeon-training systems and also for systems where tissue deformation must be estimated in real-time such as reality-based model for robot assisted endonasal surgery. We have particular interest in the development of an experimental methodology for estimation of material properties (as elastic module and Poison's ratio) of nasal tissues, bone, cartilage and mucosa. These parameters will be used for biomechanical modeling of the nasal cavity and paranasal sinuses for Robot Assisted Endonasal Surgery.


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Experimental set up for ex vivo microindentation tests in human nasal structures.

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Human head sectioned in a sagittal plane.

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Results.



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Experimental set up for microindentation tests in porcine nasal structures.

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Porcine turbinate structures (bone and mucosa).


  • Using robotic systems in order to determine biomechanical properties of soft tissues, Regensburg, 2007(PDF)
  • Ex vivo indentation tests to determine mechanical properties of human nasal structures, Köln, 2007(PDF)
  • Relationships between the internal carotid arteries and the sphenoidal sinuses assessed by 3D reconstruction and biomechanical tests: an analysis for Robot Assisted Endonasal Surgery, Karlsruhe
  • Influence of preconditioning on the relaxation behavior of porcine septal cartilage using different sized indenters, Taiwan, 2007(PDF)

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