Shape memory alloy actuation of non-bonded piezo sensor configuration for bone diagnosis and impedance based analysis

Srivastava, Shashank; Bhalla, Suresh; Madan, Alok

doi:10.1007/s13534-019-00128-6

Cited by 11 publications

(3 citation statements)

References 25 publications

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“…As such, EMI technique has also been applied to biological structures for monitoring their mechanical properties related intrinsically with different biological phenomena. Bhalla and Suresh [22], Khan et al [23], Srivastava et al [24] used piezoelectric transducers as biosensors to monitor bone conditions through measuring the electrical impedance of a piezo transducer. These studies showed that detect bio-structural variations such as; cracks, total fractures, a healing process, and osteoporosis, could be possible in the future.…”

Section: Introductionmentioning

confidence: 99%

Bio-structural monitoring of bone mineral alterations through electromechanical impedance measurements of a Piezo-device joined to a tooth

et al. 2020

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Bone presents different systemic functionalities as calcium phosphate reservoir, organ protection, among others. For that reason, the bone health conditions are essential to keep in equilibrium the metabolism of several body systems. Different technologies exist to diagnose bone conditions with invasive methods based on ionizing radiation. Therefore, there is a challenge to develop new ways to evaluate bone alterations in a noninvasive form. This study shows the assessment of a piezo-actuated device acting on a human tooth for the bio-monitoring of bone alterations. The bone diagnosis is performed by applying the electromechanical impedance technique (EMI), commonly used in structural health monitoring. For the experimental tests, five bone samples were prepared, and one was chosen as the monitoring. All samples were put in a decalcifying substance (TBD1 acid-base) at different times to emulate localized bone mineral alterations. Bone reductions were computed by using X-ray micro-computed tomography analyzing the morphometry. Electrical resistance measurements (piezo-device) were taken for the monitoring specimen meanwhile it was partially decalcified during 8520 seconds. In the frequency spectrum, several observation windows showed that the bone alterations gradually changed the electrical resistance signals which were quantified statistically. Results evidenced that the bone density changes are correlated with the electrical resistance measurements; these changes presented an exponential behavior as much as in the calculated index, and bone mineral reduction. The results demonstrated that bone alterations exhibit linear dependence with the computed statistical indexes. This result confirms that it is possible to observe the bone changes from the teeth as a future application.

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Section: Introductionmentioning

confidence: 99%

Bio-structural monitoring of bone mineral alterations through electromechanical impedance measurements of a Piezo-device joined to a tooth

et al. 2020

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“…Experiments were performed on ex vivo healthy and osteoporotic femur bones with promising results. In [142], the authors assessed NBS and BS with finite element models of the radius and femur; they concluded that the simulations matched well the experimental results of their previous investigations [137,141,143].…”

Section: Current Stagementioning

confidence: 60%

“…Modifications of the resonant frequencies occurs as the torque of the clamp screws changes, affecting the results of the analysis. In [141], the authors proposed an autonomous gripping mechanism for NBS using shape memory alloy (SMA) wires. In summary, they replaced the clamps by SMA wires to fix the PZT on the bone.…”

Section: Current Stagementioning

confidence: 99%