Liquid entraining system of the humidifier and nebulizer type

Claim 1

An oxygen humidifier device for use in conjunction with a conventional irrigating container having a threaded neck portion and on which the oxygen humidifier device may be threadably mounted for administering inhalation therapy to a patient, comprising: a. an elongated, generally cylindrical hollow shell having a vertically extending longitudinal axis, said shell including at its lower end a first threaded gland adapted to be sealingly secured by threaded engagement to the threaded neck of the container so that the hollow interior of the shell communicates with the interior of the container; b. connector means on the upper end of the hollow shell including a second threaded gland rotatably mounted on an upwardly extending generally cylindrical bulbous extension of said shell, said extension having an upper convex sealing surface adapted to engage a source of oxygen and said gland being adapted to sealingly attach the source of oxygen to said shell; c. a restricted passageway through said bulbous extension communicating the interior of the hollow shell with the exterior thereof and adapted for connecting said source of oxygen to the interior of said shell; d. an oxygen diffuser adapted to be immersed in liquid contained in said container when said hollow shell is sealingly secured to the threaded neck of the container; e. a downwardly projecting cylindrical extension integral with and extending generally axially through said bulbous extension, said downwardly projecting extension having a bore which is an extension of said restricted passage, the lower end of said bore having an increased diameter portion defining an integral interior shoulder; f. flexible tube means connected at one end to said diffuser, the other end being inserted into said bore to engage said interior shoulder, said tube means connecting said diffuser to said restricted passageway so as to convey oxygen under pressure to said diffuser; g. means including a chamfered portion within said bore to secure said flexible tube means; h. an outlet nipple in said shell for discharging humidified oxygen to the patient upon demand thereby, said outlet nipple comprising a laterally directed, generally cylindrical opening intermediate the upper and lower ends of said shell; i. cap means mounted on said outlet nipple, said cap means including a centrally disposed conical nipple adapted to receive an oxygen delivery tube; and j. pressure relief valve means on the shell operative to relieve the internal pressure of said humidified oxygen within the shell when such pressure exceeds a predetermined value, said relief valve comprising a generally tubular housing and flap valve means constituting two layers of flexible material secured in said housing and joined along their longitudinal edges to permit the escape of humidified oxygen to produce an audible alarm in the event excessive pressure occurs in said humidifier device, said pressure relief valve being located in the wall of said shell generally intermediate the ends thereof and opposite said outlet nipple.