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Lubricating Medical Devices with Fullerene-Like Nanoparticles

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Abstract

In the present work, MoS2 nanoparticles with fullerene-like structure, and most particularly those doped with minute amounts of rhenium atoms, are used as additive to medical gels in order to facilitate their entry into constricted openings of soft material rings. This procedure is used to mimic the entry of endoscopes to constricted openings of the human body, like urethra, etc. It is shown that the Re-doped nanoparticles reduce the traction force used to retrieve the metallic lead of the endoscope from the soft ring by a factor close to three times with respect to the original gel. The mechanism of the mitigation of both friction and adhesion forces in these systems by the nanoparticles is discussed.

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Acknowledgments

We wish to express our gratitude to Dr. Nir Kampf for the help with the rheological measurements. This research was supported by the Kamin program of the Office of Chief Scientist, Israeli Ministry of Economy. We are also grateful to the support of Harold Perlman Foundation; the Irving and Azelle Waltcher Foundation in honor of Prof. Moshe Levy and the Irving and Cherna Moskowitz Center for Nano and Bio-Nano Imaging. RT holds the Drake Family Chair in Nanotechnology and is the director of the Helen and Martin Kimmel Center for Nanoscale Science. H. Daniel Wagner is the recipient of the Livio Norzi Professorial Chair in Materials Science.

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Authors and Affiliations

  1. Department of Materials and Interfaces, Weizmann Institute of science, 76100, Rehovot, Israel

    Ohad Goldbart, Anastasia Sedova, Lena Yadgarov, Rita Rosentsveig, H. Daniel Wagner & Reshef Tenne

  2. Azrieli - College of Engineering Jerusalem, P.O. Box 3566, 9103501, Jerusalem, Israel

    Anastasia Sedova

  3. Urology Department, Barzilai Medical Center, Hahistadrout St. 2, 78278, Ashkelon, Israel

    Dmitry Shumalinsky & Leonid Lobik

Authors
  1. Ohad Goldbart
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  2. Anastasia Sedova
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  3. Lena Yadgarov
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  4. Rita Rosentsveig
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  5. Dmitry Shumalinsky
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  6. Leonid Lobik
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  7. H. Daniel Wagner
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  8. Reshef Tenne
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Corresponding author

Correspondence to Reshef Tenne.

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Goldbart, O., Sedova, A., Yadgarov, L. et al. Lubricating Medical Devices with Fullerene-Like Nanoparticles. Tribol Lett 55, 103–109 (2014). https://doi.org/10.1007/s11249-014-0337-9

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  • DOI: https://doi.org/10.1007/s11249-014-0337-9

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