US PATENT SUBCLASS 128 / 203.12
.~ Means for mixing treating agent with respiratory gas

Current as of: June, 1999
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128 /   HD   SURGERY

200.24  DF  RESPIRATORY METHOD OR DEVICE {32}
203.12.~ Means for mixing treating agent with respiratory gas {16}
203.13  DF  .~.~> Means for supplying anesthetic under patient's control
203.14  DF  .~.~> Control means responsive to condition other than user's airway pressure
203.15  DF  .~.~> Particulate treating agent carried by breathed gas
203.16  DF  .~.~> Means for mixing respiratory gas with water vapor and another treating agent {1}
203.18  DF  .~.~> Means for mixing treating agent with oral exhalation and directing mixture into nasal passage
203.19  DF  .~.~> Means for controlling gravity flow of treating agent from holder
203.21  DF  .~.~> Means broken or pierced to supply treating agent
203.22  DF  .~.~> Means for supplying, or permitting inhalation of, separate streams of treating agent/respiratory gas mixture through nasal passages
203.23  DF  .~.~> Pocket-type draw tube having discharge aperture for air/treating agent mixture at end thereof {1}
203.25  DF  .~.~> Means for varying treating agent/respiratory gas ratio
203.26  DF  .~.~> Means for heating treating agent, respiratory gas, or mixture thereof {1}
203.28  DF  .~.~> Including expandable bag, bellows, or squeeze bulb
203.29  DF  .~.~> Including face mask covering nose and mouth
204.11  DF  .~.~> Treating agent holder solely supported by head {1}
204.13  DF  .~.~> Treating agent evaporated from extended surface absorbent (e.g., sponge, fibrous wick, screen, etc.)
204.14  DF  .~.~> Respiratory gas passed over surface of liquid treating agent in reservoir

DEFINITION

Classification: 128/203.12

Means for mixing treating agent with respiratory gas:

(under subclass 200.24) Subject matter including means for mixing a treating agent with gas breathed by a living thing.

(1) Note. A mere chamber, such as the interior of a face mask, with separate means supplying a treating agent and a respiratory gas thereto, is considered a means for mixing under this subclass.

(2) Note. Under this subclass, substances other than oxygen or atmospheric air (e.g., helium, carbon-dioxide, nitrogen, anesthetic, water vapor, etc.) are considered treating agents, with the exception that CO[supscrpt]2[end supscrpt] or nitrogen exhaled and then rebreathed with additional O[supscrpt]2[end supscrpt] or air are not considered treating agents.

SEE OR SEARCH THIS CLASS, SUBCLASS:

200.14+, for atomizers or sprayers.

518, for methods of mixing the therapeutic agent with a delivery compound, either gas or liquid