Abstract: A female anesthesiology connector is provided for connecting a tube supplying anesthesiology gases to an endotracheal tube. The female connector is provided with a longitudinally extending finger having a bevelled locking tooth thereon for providing a positive securement of the male connector of an endotracheal tube with the present female anesthesiology connector. The finger in on a ring inserted into the body of the female connector and secured in place by means of sonic or solvent welding, or a suitable adhesive. The ring and the body together provide an internal groove receiving an O-ring which makes a positive seal with the male connector of the endotracheal tube.

Abstract: Inhalation therapy apparatus comprises a mouthpiece through which air is to be inhaled and provides a pneumatic signal related to the volume of air inhaled. The pneumatic signal is transduced to electrical information and provides visual indicia to be observed by the patient to encourage the patient's performance. One row of lights indicates a desired level of inhalation to be attained, while a parallel row of lights indicates the inhalation actually attained. A step wise visual configuration also is provided encouraging the patient to increase his inhalation step by step. A visual display is also provided of the total number of attempts or inhalations, and also the number of times that the desired volume is attained.