Abstract
To develop a project of hyperbaric chamber that allows its safe and reliable use in veterinary and animal experimentation. Based on the technical specifications for the construction of hyperbaric chambers for human beings, it has been developed a design of a chamber with dimensions and characteristics for the use of a midsize animal, (dog or pig), as well as a multiple chamber for the use in small animals (mice, rats, hamsters, rabbits or cats). The technical specifications allowed that the chamber could be used both for veterinary use and for use in experiments on Health Sciences. A chamber with the following characteristics was built: ASTM A36 steel for the manufacture of the master cylinder and rear cover; front door built in 5052 aluminum; internal diameter of 50.5 cm and 83.0 cm in length; weight 160Kg and internal area of 150cm(3); internal space to accommodate 2 acrylic baskets; 150mm high, 280mm wide and 690mm in length. It was capable of supporting a maximum of hydrostatic pressure test of 3.0 to 4.0 BAR ACT and maximum working pressure of 2.0 BAR or 3.0 ACT; equipped with security devices and valves that triggers with load of 2.2 BAR or 3.2 ACT. Tests for engineering and biological use on animals showed the effectiveness of the device. The development of the project enabled the construction of a hyperbaric chamber with security features and reliability comparable to those required by the legal and technical specifications of a hyperbaric chamber human use.
Highlights
Hyperbaric oxygen (HBO) is a medical therapeutic modality that offers pure oxygen in pressurized environment two or three absolute atmospheres above the atmospheric pressure[1]
The engineering blueprints and drawings were done in accordance to allow a multiplace chamber that could contain a variable number of experimental animals of small size or bigger ones a multiple chamber could be used as a monoplace mode for a dog or a pig
With the partnership of an engineer, medical and veterinary staff, a safe and reliable hyperbaric chamber was built in steel carbon, like a tube with a fixed and elliptic rear and a mobile and plain frontal door with an acrylic window to observe the animal behavior during the experience period
Summary
Hyperbaric oxygen (HBO) is a medical therapeutic modality that offers pure oxygen in pressurized environment two or three absolute atmospheres above the atmospheric pressure[1]. The hyperbaric chambers (mono or multiplace) are equipments especially built to support the higher pressures using compressed air or medicinal oxygen[2]. Later, was extended to primary treatment of gas embolism, poisoning by carbon monoxide or cyanides, decompression illness and some kinds of anemia. It showed effectiveness on treatment of other diseases, e.g. clostridium infection, mionecrosis, compartment syndrome after crushing trauma, healing of wounds, necrotizing infections of soft tissue, osteomyelite with no response to the conventional treatment, abscess of liver and spleen or others in places of difficult access to perform the surgical drainage, injuries by ionizing irradiation, skin grafts and other tissues compromised by ischemia and/or infection and skin burnings[13]
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