Optical Guidance Systems for Epidural Space Identification

Carotenuto, Benito; Micco, A.; Ricciardi, Armando; Amorizzo, Ezio; Mercieri, M.; Cutolo, A.; Cusano, A.

doi:10.1109/jstqe.2016.2600027

Cited by 50 publications

(38 citation statements)

References 35 publications

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“…There are also many patents on medical instruments that use these sensors [10]- [13]. Particularly, FBG sensors are used as force sensors to recognize the interface between different tissues in order to aid in accurately placing a catheter in the epidural space [14]. They have also been used to display the shape of a colonoscope and the shape of a needle in real-time [2], [15].…”

Section: Introductionmentioning

confidence: 99%

Multi-Core Optical Fibers With Bragg Gratings as Shape Sensor for Flexible Medical Instruments

et al. 2019

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This article presents a technique to reconstruct the shape of a flexible instrument in three dimensional Euclidean space based on data from Fiber Bragg Gratings (FBG) that are inscribed in multi-core fibers. Its main contributions are the application of several multi-core fibers with FBGs as shape sensor for medical instruments and a thorough presentation of the reconstruction technique. The data from the FBG sensors is first converted to strain measurements, which is then used to calculate the curvature and torsion of the fibers. The shape of the instrument is reconstructed using Frenet-Serret equations in conjunction with the calculated curvature and torsion of the instrument. The reconstruction technique is validated with a catheter sensorized with 4 multi-core fibers that have FBG sensors. The catheter is placed in 8 different configurations and the reconstruction is compared to the ground truth. The maximum reconstruction error among all the configurations is found to be 1.05 mm. The results show that shape sensing for flexible medical instruments is feasible with FBG sensors in multicore fibers.

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Section: Introductionmentioning

confidence: 99%

Multi-Core Optical Fibers With Bragg Gratings as Shape Sensor for Flexible Medical Instruments

et al. 2019

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“…The main benefits of using the proposed device for ES localization and the related technique have been already discussed in our previous works [11,12]; they include ease of use, conservation of medical technical practice and manual skill, possibility for the operator to use both hands, without needing cumbersome instrumentation. With respect to the previous version of our device, in which the Hytrel coated FBG was directly inserted inside the needle lumen, this novel configuration allows to add further significant advantages.…”

Section: Discussionmentioning

confidence: 95%

“…Specifically, the FBG is positioned at ~15 mm from the fiber end. This allows to maximize the probe sensitivity and avoid the FBG bending due to the curved shape of the needle tip [11].…”

Section: Sensorized Epidural Needlementioning

confidence: 99%

“…In this framework, we have recently proposed a guidance system based on the integration inside the needle lumen of a Hytrel-coated Fiber Bragg Grating (FBG) [11,12]. The FBG works as a strain sensor and measures the force exerted on the needle tip during the tissues penetration.…”

Section: Introductionmentioning

confidence: 99%

“…The ES is identified when the optical sensor measures an abrupt force drop whose characteristics are unique, thus making the ES identification reliable and accurate. Our device was successfully tested on a Lumbar Training Phantom [11] and also on a porcine model [12]. However, the weak biocompatibility of Hytrel makes this device not suitable for in vivo applications.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Smart Optical Catheters for Epidurals

Carotenuto¹,

Ricciardi²,

Micco³

et al. 2018

Preprint

Self Cite

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Placing the needle inside the epidural space for locoregional anesthesia is a challenging procedure, which even today is left to the expertise of the operator. Recently, we have demonstrated that the use of optically sensorized needles significantly improve the effectiveness of such procedure. Here we propose an optimized configuration, where the optical fiber strain sensor is directly integrated inside the epidural catheter. The new design allows to solve the biocompatibility issues and increases the versatility of the former configuration. Through an in vivo study carried out on a porcine model we confirm the reliability of our approach, which also opens the way to catheter monitoring during its insertion inside biological spaces.

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Advances in Fiber‐Optic Technology for Point‐of‐Care Diagnosis and In Vivo Biosensing

Tabassum

Kumar

2020

Adv Materials Technologies

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Development of reliable, sensitive, selective, and miniaturized sensing technologies is critical for health assessment and early diagnosis and treatment of diseases/anomalies while simultaneously mitigating the challenges associated with in vivo measurements. Some critical constraints to the realization of in vivo measurements include the necessity to fabricate the sensor on a tightly constrained footprint while ensuring acceptable biocompatibility, accuracy, and reliability. The inherent light-guiding properties of optical fibers over long distances, their microscopic cross-section that can be structured at the nanoscale to manipulate the light transmittance/reflectance spectrum, excellent biocompatibility enabling their efficient integration with bio-recognition molecules, immunity to electromagnetic interference, mechanical flexibility, and low cost have been inviting research attention to utilize these unique features for in vivo and label-free point-ofcare diagnostics. Hence, fiber-optic biosensing has become a promising research thrust, with a plethora of emerging methodologies to develop ultrasensitive and selective sensing probes.A unified presentation of the research trends on biosensors incorporated into optical fibers is presented.

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Optical Guidance Systems for Epidural Space Identification

Cited by 50 publications

References 35 publications

Multi-Core Optical Fibers With Bragg Gratings as Shape Sensor for Flexible Medical Instruments

Multi-Core Optical Fibers With Bragg Gratings as Shape Sensor for Flexible Medical Instruments

Smart Optical Catheters for Epidurals

Advances in Fiber‐Optic Technology for Point‐of‐Care Diagnosis and In Vivo Biosensing

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