Medical microrobots in reproductive medicine from the bench to the clinic

Richard Nauber, Sandhya R. Goudu, Maren Goeckenjan, Martin Bornhäuser, Carla Ribeiro and Mariana Medina-Sánchez ()
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Richard Nauber: Leibniz Institute for Solid State and Materials Research (IFW)
Sandhya R. Goudu: Leibniz Institute for Solid State and Materials Research (IFW)
Maren Goeckenjan: University Hospital, Technische Universität Dresden
Martin Bornhäuser: University Hospital, Technische Universität Dresden
Carla Ribeiro: Leibniz Institute for Solid State and Materials Research (IFW)
Mariana Medina-Sánchez: Leibniz Institute for Solid State and Materials Research (IFW)

Nature Communications, 2023, vol. 14, issue 1, 1-9

Abstract: Abstract Medical microrobotics is an emerging field that aims at non-invasive diagnosis and therapy inside the human body through miniaturized sensors and actuators. Such microrobots can be tethered (e.g., smart microcatheters, microendoscopes) or untethered (e.g., cell-based drug delivery systems). Active motion and multiple functionalities, distinguishing microrobots from mere passive carriers and conventional nanomedicines, can be achieved through external control with physical fields such as magnetism or ultrasound. Here we give an overview of the key challenges in the field of assisted reproduction and how these new technologies could, in the future, enable assisted fertilization in vivo and enhance embryo implantation. As a case study, we describe a potential intervention in the case of recurrent embryo implantation failure, which involves the non-invasive delivery of an early embryo back to the fertilization site using magnetically-controlled microrobots. As the embryo will be in contact with the secretory oviduct fluid, it can develop under natural conditions and in synchrony with the endometrium preparation. We discuss the potential microrobot designs, including a proper selection of materials and processes, envisioning their translation from bench to animal studies and human medicine. Finally, we highlight regulatory and ethical considerations for bringing this technology to the clinic.

Date: 2023
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DOI: 10.1038/s41467-023-36215-7

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