초록 ▼

An apparatus for delivering oxygen to a patient is preferably constructed so as to include an elongted, deformable receptacle having an open side extending along its length, a flexible, “floppy”diaphragm secured at its edge so as to seal off or enclose the open side of the receptacle and a retainer

An apparatus for delivering oxygen to a patient is preferably constructed so as to include an elongted, deformable receptacle having an open side extending along its length, a flexible, “floppy”diaphragm secured at its edge so as to seal off or enclose the open side of the receptacle and a retainer for protecting and for limiting expansion of the diaphragm located along the side of the diaphragm remote from the receptacle. As the apparatus is used, oxygen is constantly delivered to the extremities of the receptacle through appropriate supply lines. On exhalation exhaled gas is forced by the pressure of the breath through a cannula－preferably a nasal cannula－into the interior of the receptacle remote from the supply lines. This cannula is used so that gas can flow. This exhaled gas is used to force the diaphragm against the retainer, opening up the interior of the receptacle in an amount such that some of the exhaled gas will be held in the receptacle. This latter gas will gradually be replaced by the oxygen. On inhalation this mixture will be drawn through the cannula into the body as a consequence of the partial vacuum created during inhalation. This will have the effect of collapsing the diaphragm against the interior of the receptacle so as to substantially close off the interior of the receptacle between the cannula and the supply lines.

대표청구항 ▼

An oxygen delivery apparatus including cannula means for use in conveying gases into and out of the human body through the nostrils, oxygen supply line means for conveying oxygen to said apparatus and inhalation and exhalation responsive flow control means connected to said cannula means and said su

An oxygen delivery apparatus including cannula means for use in conveying gases into and out of the human body through the nostrils, oxygen supply line means for conveying oxygen to said apparatus and inhalation and exhalation responsive flow control means connected to said cannula means and said supply line means for controlling the flow of oxygen to said cannula means as said apparatus is used in which the improvement comprises: said cannula means being sufficiently small so that they will not close off air flow through the nostrils of the human body, said flow control means including an elongated receptacle with first and second opposite ends and defining an open sided elongated chamber extending therebetween, said supply line means connected into the interior of said chamber and said cannula means connected to the interior of the chamber, said receptacle further having an elongated diaphragm means formed of flexible material and mounted on said receptacle over said open side thereby enclosing said chamber, said diaphragm means being mounted transversely to said cannula means to move forward and away from said cannula means, said supply line means and said cannula means spaced from one another by said chamber a sufficient distance so that gas flow from said supply line means will be through said enclosed chamber and will be capable by forcing gas from within said chamber out through said cannula means, said supply line means being connected to said cannula only through the interior of said chamber, said diaphragm means having a side opposite the side adjacent said enclosed chamber communicating with the surrounding atmosphere, said diaphragm means being sufficiently flexible and responsive to pressures that are developed during inhalation and exhalation so as to receive gas in said chamber during exhalation and to substantially close off the flow of gas between said supply line means and cannula means through said chamber in response to inhalation.