Portable devices for administration of therapeutic gas mixtures and methods of use

A portable, handheld, gas delivery system, said gas delivery comprising:

• i) a sealed pressurized cartridge containing a predetermined amount of compressed therapeutic gas mixture comprising either nitrous oxide or a noble gas mixture and having a topside and underside;
• ii) a demand regulator comprising:
• (a) a cartridge receiver configured to releasably couple with the topside of the pressurized cartridge in a sealed connection with the regulator and allow intake of the gas mixture into the regulator based on the inhalation type of the patient;
• (b) an inhalation device;
• and
• (c) an outtake,
• where said demand regulator is configured such that the inhalation of the patient through the inhalation device actuates the release of a portion of the gas mixture from the pressurized cartridge through the cartridge receiver into the regulator while lowering the pressure of the gas mixture within the regulator to ambient pressure, and then allows the gas mixture to enter into the patient's lungs from the regulator through the inhalation device;
• and further allows the patient's exhalation through the inhalation device to be released from the regulator through the outtake;
• iii) instructions from a medical provider to the patient directing a breath type during use;
• and
• iv) a cage coupled to the regulator configured to house the cartridge when coupled to the cartridge receiver and further comprising a cam and lever operably coupled to the cage at a pivot point that allows the cam and lever to swivel into open and closed positions, such that the cam can swivel to engage with the underside of the cartridge to apply pressure to the cartridge towards the cartridge receiver and swivel in the opposite direction to release the cartridge.