Design and fabrication of a new tactile probe for measuring the modulus of elasticity of soft tissues

Purpose – The paper aims to discuss the design, fabrication, communication, testing, and simulation of a new tactile probe called Elastirob used to measure the modulus of elasticity of biological soft tissues and soft materials.Design/methodology/approach – Both finite element modeling and experimental approaches were used in this analysis. Elastirob, with the ability to apply different rates of strain on testing specimens, is accompanied by a tactile display called TacPlay. This display is a custom‐designed user‐friendly interface and is able to evaluate the elasticity in each part of the stress‐strain curve.Findings – A new device is being constructed that can measure the modulus of elasticity of a sensed object. The results of Elastirob applied on two specimens are reported and compared by the results of experiments obtained by an industrial testing machine. Acceptable validations of Elastirob were achieved from the comparisons.Research limitations/implications – The designed system can be miniaturized...

[1]  Javad Dargahi,et al.  Advances in tactile sensors design/manufacturing and its impact on robotics applications - a review , 2005, Ind. Robot.

[2]  J. Bishop,et al.  Visualization and quantification of breast cancer biomechanical properties with magnetic resonance elastography. , 2000, Physics in medicine and biology.

[3]  Javad Dargahi,et al.  A novel method in measuring the stiffness of sensed objects with applications for biomedical robotic systems , 2006, The international journal of medical robotics + computer assisted surgery : MRCAS.

[4]  Mitsuhiro Shikida,et al.  Active tactile sensor for detecting contact force and hardness of an object , 2003 .

[5]  Javad Dargahi,et al.  Sensitivity analysis of a novel tactile probe for measurement of tissue softness with applications in biomedical robotics , 2007 .

[6]  Christos E. Constantinou,et al.  Real time robotic tactile sensor system for the determination of the physical properties of biomaterials , 2004 .

[7]  S. Omata,et al.  Micro-mechanical sensing platform for the characterization of the elastic properties of the ovum via uniaxial measurement. , 2004, Journal of biomechanics.

[8]  Abbas Samani,et al.  Measuring the elastic modulus of ex vivo small tissue samples. , 2003, Physics in medicine and biology.

[9]  Javad Dargahi,et al.  Application of artificial neural networks for the estimation of tumour characteristics in biological tissues , 2007, The international journal of medical robotics + computer assisted surgery : MRCAS.

[10]  Sadao Omata,et al.  Fabrication of micro tactile sensor for the measurement of micro-scale local elasticity , 2004 .

[11]  M. Shikida,et al.  Amicromachined active tactile sensor for hardness detection , 2004 .

[12]  Mark H. Lee,et al.  Tactile Sensing: New Directions, New Challenges , 2000, Int. J. Robotics Res..

[13]  I. Barman,et al.  Analysis of a new combined stretch and pressure sensor for internal nodule palpation , 2006 .

[14]  Mark Lee,et al.  Review Article Tactile sensing for mechatronics—a state of the art survey , 1999 .

[15]  Javad Dargahi,et al.  Design and modeling of an endoscopic piezoelectric tactile sensor , 2005 .

[16]  G. Semenza,et al.  Measuring elasticity of biological materials by atomic force microscopy , 1998, FEBS letters.

[17]  S Omata,et al.  Objective evaluation of liver consistency to estimate hepatic fibrosis and functional reserve for hepatectomy. , 2000, Journal of the American College of Surgeons.

[18]  H. Miyazaki,et al.  A newly designed tensile tester for cells and its application to fibroblasts. , 2000, Journal of biomechanics.

[19]  S. Omata,et al.  Development of Tactile Mapping system for the stiffness characterization of tissue slice using novel tactile sensing technology , 2005 .

[20]  K J Parker,et al.  Imaging of the elastic properties of tissue--a review. , 1996, Ultrasound in medicine & biology.

[21]  J. R. Hewit,et al.  Tactile sensing technology for minimal access surgery––a review , 2003 .

[22]  Javad Dargahi,et al.  Detection of tumours using a computational tactile sensing approach , 2006, The international journal of medical robotics + computer assisted surgery : MRCAS.

[23]  N. Adachi,et al.  Arthroscopic assessment of human cartilage stiffness of the femoral condyles and the patella with a new tactile sensor. , 2002, Medical engineering & physics.

[24]  J Dargahi,et al.  Human tactile perception as a standard for artificial tactile sensing—a review , 2004, The international journal of medical robotics + computer assisted surgery : MRCAS.