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Surface Acoustic Wave (SAW) Sensors for Hip Implant: A Numerical and Computational Feasibility Investigation Using Finite Element Methods

Hafizh M 1 , Soliman MM 2 , Qiblawey Y 3 , Chowdhury MEH 3 , Islam MT 4 , Musharavati F 1 Show all authors , Mahmud S 3 , Khandakar A 3 , Nabil M 3 , Nezhad EZ 5

Affiliations 

  • 1 Department of Mechanical and Industrial Engineering, Qatar University, Doha 2713, Qatar
  • 2 Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
  • 3 Department of Electrical Engineering, Qatar University, Doha 2713, Qatar
  • 4 Centre for Advanced Electronic and Communication Engineering, Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Selangor, Malaysia
  • 5 Department of Biomedical Engineering, University of Texas at San Antonio, San Antonio, TX 78249, USA
Biosensors (Basel), 2023 Jan 02;13(1).
PMID: 36671914 DOI: 10.3390/bios13010079

Abstract

In this paper, a surface acoustic wave (SAW) sensor for hip implant geometry was proposed for the application of total hip replacement. A two-port SAW device was numerically investigated for implementation with an operating frequency of 872 MHz that can be used in more common radio frequency interrogator units. A finite element analysis of the device was developed for a lithium niobate (LiNBO3) substrate with a Rayleigh velocity of 3488 m/s on COMSOL Multiphysics. The Multiphysics loading and frequency results highlighted a good uniformity with numerical results. Afterwards, a hip implant geometry was developed. The SAW sensor was mounted at two locations on the implant corresponding to two regions along the shaft of the femur bone. Three discrete conditions were studied for the feasibility of the implant with upper- and lower-body loading. The loading simulations highlighted that the stresses experienced do not exceed the yield strengths. The voltage output results indicated that the SAW sensor can be implanted in the hip implant for hip implant-loosening detection applications.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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