We present novel medical devices for safe surgical puncturing, in particular a cannula for the treatment of retinal vein occlusion (RVO). This passive mechanical device has an adjustable stroke and exerts a puncturing force independent of operator applied displacement. The innovative feature of this tool is that puncturing stroke is decoupled from operator input thereby minimizing the possibility of overpuncturing. This is achieved using our concept of stability programming, where the user modifies the mechanism strain energy as opposed to imposing direct displacement which is the case for standard bistable mechanisms. Ultra-fast laser three-dimensional (3D) printing is used to manufacture the needle in glass. A microfluidic channel is integrated into the needle tip for drug injection. Numerical simulations and experimental measurements validate the mechanical stability behavior of the puncture mechanism and characterize its puncturing stroke and force.
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Research-Article
Programmable Multistable Mechanisms for Safe Surgical Puncturing
Mohamed Zanaty
,
Mohamed Zanaty
Instant-Lab,
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: mohamed.zanaty@epfl.ch
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: mohamed.zanaty@epfl.ch
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Thomas Fussinger
,
Thomas Fussinger
Instant-Lab,
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: thomas.fussinger@epfl.ch
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: thomas.fussinger@epfl.ch
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Arno Rogg
,
Arno Rogg
Instant-Lab,
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: arno.rogg@gmail.com
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: arno.rogg@gmail.com
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Andrea Lovera
,
Andrea Lovera
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David Lambelet
,
David Lambelet
Galatea-Lab,
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: david.lambelet@epfl.ch
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: david.lambelet@epfl.ch
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Ilan Vardi
,
Ilan Vardi
Instant-Lab,
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: ilan.vardi@epfl.ch
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: ilan.vardi@epfl.ch
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Thomas J. Wolfensberger
,
Thomas J. Wolfensberger
Department of Ophthalmology,
University of Lausanne,
Hôpital Ophtalmique Jules-Gonin,
Lausanne 1004, Switzerland
e-mail: thomas.wolfensberger@fa2.ch
University of Lausanne,
Hôpital Ophtalmique Jules-Gonin,
Lausanne 1004, Switzerland
e-mail: thomas.wolfensberger@fa2.ch
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Charles Baur
,
Charles Baur
Instant-Lab,
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: charles.baur@epfl.ch
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: charles.baur@epfl.ch
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Simon Henein
Simon Henein
Instant-Lab,
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: simon.henein@epfl.ch
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: simon.henein@epfl.ch
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Mohamed Zanaty
Instant-Lab,
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: mohamed.zanaty@epfl.ch
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: mohamed.zanaty@epfl.ch
Thomas Fussinger
Instant-Lab,
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: thomas.fussinger@epfl.ch
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: thomas.fussinger@epfl.ch
Arno Rogg
Instant-Lab,
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: arno.rogg@gmail.com
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: arno.rogg@gmail.com
Andrea Lovera
David Lambelet
Galatea-Lab,
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: david.lambelet@epfl.ch
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: david.lambelet@epfl.ch
Ilan Vardi
Instant-Lab,
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: ilan.vardi@epfl.ch
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: ilan.vardi@epfl.ch
Thomas J. Wolfensberger
Department of Ophthalmology,
University of Lausanne,
Hôpital Ophtalmique Jules-Gonin,
Lausanne 1004, Switzerland
e-mail: thomas.wolfensberger@fa2.ch
University of Lausanne,
Hôpital Ophtalmique Jules-Gonin,
Lausanne 1004, Switzerland
e-mail: thomas.wolfensberger@fa2.ch
Charles Baur
Instant-Lab,
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: charles.baur@epfl.ch
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: charles.baur@epfl.ch
Simon Henein
Instant-Lab,
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: simon.henein@epfl.ch
École Polytechnique Fédérale de Lausanne,
Neuchâtel 2000, Switzerland
e-mail: simon.henein@epfl.ch
1
Corresponding author.
Manuscript received August 10, 2018; final manuscript received February 26, 2019; published online March 21, 2019. Assoc. Editor: Carl Nelson.
J. Med. Devices. Jun 2019, 13(2): 021002 (10 pages)
Published Online: March 21, 2019
Article history
Received:
August 10, 2018
Revised:
February 26, 2019
Citation
Zanaty, M., Fussinger, T., Rogg, A., Lovera, A., Lambelet, D., Vardi, I., Wolfensberger, T. J., Baur, C., and Henein, S. (March 21, 2019). "Programmable Multistable Mechanisms for Safe Surgical Puncturing." ASME. J. Med. Devices. June 2019; 13(2): 021002. https://doi.org/10.1115/1.4043016
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