Anesthesia delivery system

An anesthesia delivery system for minimizing the build up of carbon dioxide levels in a patient due to a patient re-breathing their own exhaled gases, said system compromising:

• a) an endo-tracheal tube element capable of being inserted through a patient's mouth, said endo-tracheal tube element comprising;
• i) a first hollow tubular element defining a first opening at one end of said first hollow tubular element and a second opening at the other end of said first hollow tubular element, said first opening of said first hollow tubular clement being capable of being hermetically coupled to a source of gas that is to be injected in a patient's lungs;
• ii) a second hollow tubular element defining a first opening at one end of said second hollow tubular element and a second opening at the other end of said second hollow tubular element, said first opening of said first hollow tubular element of said endo-tracheal tube element being concentrically positioned within the first opening of said second hollow tubular element and wherein said first opening of said second hollow tubular element being capable of being hermetically coupled to an outside source for eliminating expelled gases form said patient and formed so that said second opening of said first hollow tubular element is hermetically coupled to said second hollow tubular element at said second opening of said second hollow tubular element, wherein said first hollow tubular element of said endo-tracheal tube element and said second hollow tubular element of said endo-tracheal element utilize a common wall between their respective structures for a portion of their length,
• iii) a lower hollow tubular element hermetically coupled to said second hollow tubular element at said second opening of said second hollow tubular element;
• b) means hermetically coupled to said first opening of said first hollow tubular element for delivering a source of gas to said first hollow tubular element of said endo-tracheal tube element;
• c) means hermetically coupled to said first opening of said second hollow tubular element for eliminating expelled gases from said second hollow tubular element of said endo-tracheal tube element;
• and
• d) a filtering element capable of maintaining the moisture level within a patient's pulmonary tree while blocking the expelling of contaminants, said filtering element being hermetically coupled between the endo-tracheal tube element and said means delivering said source of gas and said means for eliminating said expelled gases whereby the introduction into said anesthesia delivery system of said filtering element does not increase the "dead space" of said system.