An Implantable Wireless Inductive Sensor System Designed to Monitor Prosthesis Motion in Total Joint Replacement Surgery

Mohammadbagherpoor, Hamed; Ierymenko, Paul; Craver, Meghan H.; Carlson, James E.; Dausch, David; Grant, Edward; Lucey, John D.

doi:10.1109/tbme.2019.2943808

Cited by 16 publications

(17 citation statements)

References 30 publications

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“…With our proposed concept measuring local implant fixation, direct performance comparisons cannot yet be drawn to these imaging modalities without in vivo testing of either concept. Several modified implants have previously been proposed to detect loosening [9], [18]- [23], most of which were also evaluated under simulated conditions. Of those concepts that are passive, a magnetically excitable internal oscillator has been posited to detect loosening, with acoustic analysis determining osseointegration in rabbits in vivo [20].…”

Section: Discussionmentioning

confidence: 99%

“…In this study, excitation and acquisition were percutaneous, but at significantly less implantation depth (<2 mm) than the 12 mm range presented here. Inductive sensors have also recently been proposed to measure micromotion between the implant and the bone [10], [23], primarily for cementless arthroplasty. A biological threshold for micromotion has been widely reported for cementless arthroplasty, above which bone formation is adversely affected and loosening initiates [46].…”

Section: Discussionmentioning

confidence: 99%

“…Smart implant concepts posited to detect loosening include analyses of vibrations using embedded accelerometers and transducers [9], [15]- [21] and of micromotions using embedded displacement sensors [10], [22], [23]. However, none have permeated into clinical practice which may be due to the significant modifications to implant architecture often required.…”

Section: Introductionmentioning

confidence: 99%

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Simple Smart Implants: Simultaneous Monitoring of Loosening and Temperature in Orthopaedics With an Embedded Ultrasound Transducer

Hall

Cegla

Arkel

2021

IEEE Trans. Biomed. Circuits Syst.

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Implant failure can have devastating consequences on patient outcomes following joint replacement. Time to diagnosis affects subsequent treatment success, but current diagnostics do not give early warning and lack accuracy. This research proposes an embedded ultrasound system to monitor implant fixation and temperaturea potential indicator of infection. Requiring only two implanted components: a piezoelectric transducer and a coil, pulse-echo responses are elicited via a three-coil inductive link. This passive system avoids the need for batteries, energy harvesters, and microprocessors, resulting in minimal changes to existing implant architecture. Proof-of-concept was demonstrated in vitro for a titanium plate cemented into synthetic bone, using a small embedded coil with 10mm diameter. Gross looseningsimulated by completely debonding the implant-cement interfacewas detectable with 95% confidence at up to 12 mm implantation depth. Temperature was calibrated with root mean square error of 0.19 o C at 5 mm, with measurements accurate to ±1 o C with 95% confidence up to 6 mm implantation depth. These data demonstrate that with only a transducer and coil implanted, it is possible to measure fixation and temperature simultaneously. This simple smart implant approach minimises the need to modify well-established implant designs, and hence could enable mass-market adoption.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Simple Smart Implants: Simultaneous Monitoring of Loosening and Temperature in Orthopaedics With an Embedded Ultrasound Transducer

Hall

Cegla

Arkel

2021

IEEE Trans. Biomed. Circuits Syst.

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“…3 b) (Ruther et al 2013a , b ). An inductive proximity sensing system was proposed to detect early implant loosening, but it requires intracorporeal positioning of coils outside the instrumented implant (Mohammadbagherpoor et al 2020 ). The bone healing monitoring was approached using instrumented internal fixators incorporating resistive sensing (by strain gauges), piezo-floating-gate sensing and capacitive sensing (Fig.…”

Section: Smart Implantsmentioning

confidence: 99%

Bioelectronic multifunctional bone implants: recent trends

Santos

Bernardo

2022

Bioelectron Med

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The concept of Instrumented Smart Implant emerged as a leading research topic that aims to revolutionize the field of orthopaedic implantology. These implants have been designed incorporating biophysical therapeutic actuation, bone-implant interface sensing, implant-clinician communication and self-powering ability. The ultimate goal is to implement revist interface, controlled by clinicians/surgeons without troubling the quotidian activities of patients. Developing such high-performance technologies is of utmost importance, as bone replacements are among the most performed surgeries worldwide and implant failure rates can still exceed 10%. In this review paper, an overview to the major breakthroughs carried out in the scope of multifunctional smart bone implants is provided. One can conclude that many challenges must be overcome to successfully develop them as revision-free implants, but their many strengths highlight a huge potential to effectively establish a new generation of high-sophisticated biodevices.

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“…However, none of these non-imaging methods provide information about the amount of loosening to to detect lung diseases [Ped78]. This section focuses on the design, development, and application of an EM-based inductive proximity sensor system for detecting hip joint implant loosening in the micron range [Moh20]. A new inductive proximity sensor system was designed and fabricated to measure the level of hip loosening, see Figure 3.6.…”

Section: Design Of An Electromagnetic-based Wireless Sensor System For Detecting Loosening In Total Hip Replacementmentioning

confidence: 99%

Designing and Testing a Closed-Loop Magnetically Actuated Laser Scanning System for Tissue Ablation

Mohammadbagherpoor

2022

Journal of Medical Devices

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Biomedical robotic systems continue to hold unlimited potential for surgical procedures. Robotized laser endoscopic tools provide surgeons with increased accuracy in the laser ablation of tissue and tumors. The research here catalogs the design and implementation of a new laser endoscopic tool for tissue ablation. A novel feature of this new device is the inclusion of a feedback loop that measures the position of the laser beam via a photo-detector sensor. The scale of this new device was governed by the dimensions of the photo-detector sensor. The tip of the laser's fiber optic cable is controlled by the torque interaction between permanent magnet rings surrounding the fiber optic and the custom designed solenoid coils. Prior to building the physical test-bed the system was modeled and simulated using COMSOL software. In pre-clinical trials, the physical experimental results showed that the designed prototype laser scanner system accurately track different ablation patterns and gives a consistent output position for the laser beam however, the heat diffusion into the tissue around the desired line of the geometric shape would give wider ablation margins than was desirable.

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An Implantable Wireless Inductive Sensor System Designed to Monitor Prosthesis Motion in Total Joint Replacement Surgery

Cited by 16 publications

References 30 publications

Simple Smart Implants: Simultaneous Monitoring of Loosening and Temperature in Orthopaedics With an Embedded Ultrasound Transducer

Simple Smart Implants: Simultaneous Monitoring of Loosening and Temperature in Orthopaedics With an Embedded Ultrasound Transducer

Bioelectronic multifunctional bone implants: recent trends

Designing and Testing a Closed-Loop Magnetically Actuated Laser Scanning System for Tissue Ablation

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