A Tactile Device Generating Repulsive Forces of Various Human Tissues Fabricated from Magnetic-Responsive Fluid in Porous Polyurethane

In this study, a controllable tactile device capable of realizing repulsive forces from soft human tissues was proposed, and its effectiveness was verified through experimental tests. The device was fabricated using both porous polyurethane foam (PPF) and smart magnetorheological fluid (MRF). As a f...

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Bibliographic Details
Published in:Materials 2020-02, Vol.13 (5), p.1062
Main Authors: Park, Yu-Jin, Yoon, Ji-Young, Kang, Byung-Hyuk, Kim, Gi-Woo, Choi, Seung-Bok
Format: Article
Language:English
Subjects:
Abdomen
Abdominal surgery
Chains
Human tissues
Investigations
Laparoscopy
Magnetic fields
Magnetic flux
Magnetorheological fluids
Polyurethane foam
Robotics
Stiffness
Stress relaxation
Tactile
Viscoelasticity
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Summary:In this study, a controllable tactile device capable of realizing repulsive forces from soft human tissues was proposed, and its effectiveness was verified through experimental tests. The device was fabricated using both porous polyurethane foam (PPF) and smart magnetorheological fluid (MRF). As a first step, the microstructural behavior of MRF particle chains that depended on the magnetic field was examined via scanning electron microscopy (SEM). The test samples were then fabricated after analyzing the magnetic field distribution, which was crucial for the formation of the particle chains under the squeeze mode operation. In the fabrication of the samples, MRF was immersed into the porous polyurethane foam and encapsulated by adhesive tape to avoid leakage. To verify the effectiveness of the proposed tactile device for appropriate stiffness of soft human tissues such as liver, the repulsive force and relaxation stress were measured and discussed as a function of the magnetic field intensity. In addition, the effectiveness and practical applicability of the proposed tactile device have been validated through the psychophysical test.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma13051062