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Sensors 2014, 14(10), 18096-18113; doi:10.3390/s141018096

A Sensorized Nuss Bar for Patient-Specific Treatment of Pectus Excavatum

1
The BioRobotics Institute, Scuola Superiore Sant'Anna, Pontedera (PI) 56025, Italy
2
Department of Pediatric Surgery, Children's Hospital A. Meyer, Florence 50139, Italy
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 1 August 2014 / Revised: 9 September 2014 / Accepted: 16 September 2014 / Published: 29 September 2014
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Italy 2014)
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Abstract

Pectus Excavatum is an anatomical deformation characterized by a depression of the anterior chest wall. Nuss technique (representing the current clinical golden standard) consists in the introduction of a corrective metal bar, in order to raise the sternum in its anatomic natural position. Nowadays, the bar plays purely a mechanical/corrective action and is kept implanted for about three years, supporting up to a maximum force of 250 N. Our study aims at optimizing the procedure of correction, in terms of monitoring the bar effect, minimizing the body response, and facilitating the bar removal. The sensorized Nuss bar prototype inserted in a platform for telemedicine described in this article is able to monitor in vitro pressure data variations, with more than 150 discrete measurements during the operating period. This behavior is promising for future clinical applications, in which the device could be exploited to monitor the forces at work, thus, providing a customized therapeutic protocol, which in turn may optimize the period of implant. The sensorized bar was also provided with a polymeric coating, able to influence human dermal fibroblast behavior in vitro. This highlights the possibility to minimize, in future in vivo applications, tissue fibrotic responses. View Full-Text
Keywords: implantable sensorized device; Nuss technique; Pectus Excavatum; pressure/force monitoring system; smart prostheses; thoracic surgery implantable sensorized device; Nuss technique; Pectus Excavatum; pressure/force monitoring system; smart prostheses; thoracic surgery
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Betti, S.; Ciuti, G.; Ricotti, L.; Ghionzoli, M.; Cavallo, F.; Messineo, A.; Menciassi, A. A Sensorized Nuss Bar for Patient-Specific Treatment of Pectus Excavatum. Sensors 2014, 14, 18096-18113.

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