Restoration of eye closure in facial paralysis using implantable electromagnetic actuator

Shaheen Hasmat*, Nigel H. Lovell, Gregg J. Suaning, Tsu Hui Hubert Low, Jonathan Clark

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Citations (Scopus)


The most devastating outcome of facial nerve paralysis is the inability to completely close the eye as it can lead to corneal ulceration and loss of vision. Gravity-assisted eye closure with upper lid loading is commonly used; however it is limited in replicating physiological eye closure to adequately lubricate the cornea. Superior results can be obtained using more advanced reconstructive approaches, however they depend on nerve regrowth which may be unpredictable and prolonged. This report describes a novel technique for creating an active eye closure using an implantable actuator. A generated magnetic field creates lateral movement in an electromagnet that is translated to the eyelid through a sling design. The device is powered wirelessly through a transcutaneous induction link and can be hermetically encapsulated for patient safety. The initial phase of device development is presented including data of a fully functioning prototype and the results of its application in animal and human cadavers.

Original languageEnglish
Pages (from-to)1521-1525
Number of pages5
JournalJournal of Plastic, Reconstructive and Aesthetic Surgery
Issue number11
Publication statusPublished - 1 Nov 2016
Externally publishedYes


  • Electromagnetic actuator
  • Eyelid
  • Facial nerve paralysis
  • Lagophthalmos
  • Lid loading
  • Temporalis muscle transposition

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