Heat Resistant Monitoring System for Medical Sterile Containers

Böhler, Lukas; Danioł, Mateusz; Keller, Anton; Sroka, Ryszard

doi:10.1007/978-3-030-11187-8_2

Cited by 2 publications

(4 citation statements)

References 36 publications

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“…Therefore, the reliability of this insulation cannot be guaranteed. This conclusion was also made by a previous work [31]. Hereby, the thermal insulation of a special developed epoxy resin was evaluated.…”

Section: Thermal Insulation Materials Selectionsupporting

confidence: 60%

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Modeling and Implementation of TEG-Based Energy Harvesting System for Steam Sterilization Surveillance Sensor Node

Danioł

Boehler

Sroka

et al. 2020

Sensors

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The aim of this work is a proof of concept, that medical Internet of Things (IoT) sterilization surveillance sensors can be powered by using the heat during a steam sterilization procedure. Hereby, the focus was on the use of thermo-electrical generators (TEG) to generate enough power for an ultra-low-power sensor application. Power generation requirement of the sensor was 1.6 mW over the single sterilization cycle. The thermal gradient across the TEG has been achieved using a highly efficient aerogel-foam-based thermal insulation, shielding a heat storage unit (HSU), connected to one side of the TEG. The evaluation of the developed system was carried out with thermal and electrical simulations based on the parameters extracted from the TEG manufacturer’s datasheet. The developed model has been validated with a real prototype using the thermal step response method. It was important for the authors to focus on rapid-prototyping and using off-the-shelf devices and materials. Based on comparison with the physical prototype, the SPICE model was adjusted. With a thermal gradient of 12 °C, the simulated model generated over 2 mW of power. The results show that a significant power generation with this system is possible and usable for sensor applications in medial IoT.

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Section: Thermal Insulation Materials Selectionsupporting

confidence: 60%

“…In the previous research it was found out that a highly efficient and low-profile encapsulation is possible, however, due to the pressure changes during steam sterilization, an outer encapsulation using epoxy resin needs to be used, protecting the fragile aerogel [31]. These results were carried out in this work.…”

Section: Thermal Insulation Materials Selectionmentioning

confidence: 97%

Modeling and Implementation of TEG-Based Energy Harvesting System for Steam Sterilization Surveillance Sensor Node

Danioł

Boehler

Sroka

et al. 2020

Sensors

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“…In order to provide better protection for the electronics, the heat transfer must be reduced. Therefore, the current issues of the state of the art, described by Böhler et al and George and Barrett [ 13 , 14 ], for reliable encapsulate electronics for the use in autoclaves need to be further investigated. The experimental results also show that the core temperature of the sensor system reaches 116

.…”

Section: Discussionmentioning

confidence: 99%

“…Research showed that, during the encapsulation process, air encapsulations cause severe damage during the sterilization-in particular, using a nonflexible epoxy resin that requires a complex setup. The issue, in this case, is that failures often occur after a multitude of sterilizations, causing unexpected damage in the system as shown in previous works by Böhler et al and George and Barrett [13,14]. In addition to the protection of the electronics from high temperatures, a long runtime has to be ensured.…”

Section: State Of the Art For Sterilization Process Validationmentioning

confidence: 99%

Sensors in the Autoclave-Modelling and Implementation of the IoT Steam Sterilization Procedure Counter

Boehler

Danioł

Sroka

et al. 2021

Sensors

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Surgical procedures involve major risks, as pathogens can enter the body unhindered. To prevent this, most surgical instruments and implants are sterilized. However, ensuring that this process is carried out safely and according to the normative requirements is not a trivial task. This study aims to develop a sensor system that can automatically detect successful steam sterilization on the basis of the measured temperature profiles. This can be achieved only when the relationship between the temperature on the surface of the tool and the temperature at the measurement point inside the tool is known. To find this relationship, the thermodynamic model of the system has been developed. Simulated results of thermal simulations were compared with the acquired temperature profiles to verify the correctness of the model. Simulated temperature profiles are in accordance with the measured temperature profiles, thus the developed model can be used in the process of further development of the system as well as for the development of algorithms for automated evaluation of the sterilization process. Although the developed sensor system proved that the detection of sterilization cycles can be automated, further studies that address the possibility of optimization of the system in terms of geometrical dimensions, used materials, and processing algorithms will be of significant importance for the potential commercialization of the presented solution.

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Heat Resistant Monitoring System for Medical Sterile Containers

Cited by 2 publications

References 36 publications

Modeling and Implementation of TEG-Based Energy Harvesting System for Steam Sterilization Surveillance Sensor Node

Modeling and Implementation of TEG-Based Energy Harvesting System for Steam Sterilization Surveillance Sensor Node

Sensors in the Autoclave-Modelling and Implementation of the IoT Steam Sterilization Procedure Counter

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