Produção Nacional
Revisado por pares
A Novel System for Organ and Tissues Preservation: The Refrigerating Hyperbaric Chamber
2006; Elsevier BV; Volume: 38; Issue: 6 Linguagem: Inglês
10.1016/j.transproceed.2006.06.054
ISSN1873-2623
AutoresF.A.G. Guimarães, Murched Omar Taha, Manuel de Jesus Simões, Carlos Alberto Amaral Moino, I.V. Santos, J.C. Amador, Rosangela Maria dos Santos, R.B. Queiroz, Rafael Amaro, Marcos Antonio Santos de Jesus,
Tópico(s)Mechanical Circulatory Support Devices
ResumoThis study was designed to investigate the feasibility of building a simple and inexpensive device to preserve organs or tissues in hyperbaric and hypothermic conditions. The device was built on a 40-cm wide, 28-cm long, and 23-cm deep stainless steel chassis. The pressure vessel was built by a 7.8-cm bore stainless steel cylinder put inside another 12-cm cylinder welded together and closed by a steel plate on the top and bottom. The inferior plate was welded, and the superior one was fixed by manual clasp nut. The cooling system is made up of air compressor, condenser, expansion area, and cooling worm that is located between the cylinders. The temperature-controlling device is a computer processor contained in an integrated-circuit chip, with a on-off system to maintain the chamber temperature between 2° to 4°C. The compression of the chamber is performed by lateral coupling with the oxygen cylinder and is maintained at 5.5 absolute atmospheres and controlled by air pressure gauge. The maximal work pressure was evaluated by spreadsheet. Temperature or pressure changes were evaluated by 12- and 24-hour assays. The maximal work pressure permitted was 6.5 absolute atmospheres. Thus, the container was free from danger. The temperature inside the chamber was kept between 2° and 4°C. The production costs of the prototype was US$1000. The manufacture of the refrigerating hyperbaric chamber is viable, simple, and inexpensive.
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