Patent ID: 8251058

Claim:
A handheld sedation system comprising: a handheld first gas container including a therapeutic amount of anesthetic gas; a handheld second gas container including oxygen; a single-use, uninterruptable flow coupler to couple a mask to the first and second containers; and a handheld, self-contained, scavenging third gas container, including a negative pressure, to couple to the mask; wherein the handheld system is configured to (i) deliver the oxygen and a continuous, uninterruptable flow of the anesthetic gas to a patient; and (ii) scavenge waste gas from the patient by recovering, via the negative pressure, the waste gas into the third gas container; wherein the third gas container is configured to (i) couple to a vacuum source to pre-charge the third gas container with the negative pressure and (ii) decouple from the vacuum source before coupling the third gas container to the patient.