Method and apparatus for partial liquid ventilation or fluorocarbons
First Claim
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1. An apparatus for partial liquid ventilation of a patient, comprising:
- a source of a biocompatible liquid suitable for ventilation of a patient;
a first relatively small conduit adapted for connection to an airway of a patient, said first conduit operatively connected to said liquid source in such a manner as to introduce a first volume of said liquid into a portion of a lung already containing a second volume of said liquid;
a source of breathing gas; and
a relatively large conduit adapted for connection to an airway of a patient, said large conduit operatively connected to said gas source in such a manner as to deliver a breathing gas to said portion of said lung containing said liquid simultaneous with but separate and apart from said liquid introduction in the same portion of a lung, whereby said breathing gas mixes with and oxygenates a second volume of liquid in a lung.
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Abstract
A method and apparatus for performing partial liquid ventilation, in connection with which a liquid such as an oxygen carrying fluorocarbon liquid is introduced into the lung and removed from the lung of a patient while the patient is simultaneously breathing an oxygen-carrying breathing gas.
110 Citations
49 Claims
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1. An apparatus for partial liquid ventilation of a patient, comprising:
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a source of a biocompatible liquid suitable for ventilation of a patient; a first relatively small conduit adapted for connection to an airway of a patient, said first conduit operatively connected to said liquid source in such a manner as to introduce a first volume of said liquid into a portion of a lung already containing a second volume of said liquid; a source of breathing gas; and a relatively large conduit adapted for connection to an airway of a patient, said large conduit operatively connected to said gas source in such a manner as to deliver a breathing gas to said portion of said lung containing said liquid simultaneous with but separate and apart from said liquid introduction in the same portion of a lung, whereby said breathing gas mixes with and oxygenates a second volume of liquid in a lung. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A methodfor partial liquid ventilation, comprising:
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introducing a first volume of liquid into a portion of a lung already containing a second volume of such liquid; and simultaneously delivering an oxygen containing breathing gas, separate and apart from said first volume of liquid, into said portion of patient'"'"'s lung containing said second volume of liquid, whereby said breathing gas mixes with and thereby oxygenares said second volume of liquid in a patient'"'"'s lung. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. In a liquid breathing system having a means for introducing liquid perfluorocarbon into a lung and a means for oxygenating the liquid perfluorocarbon with an oxygen-containing gas, the improvement comprising:
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means for collecting said oxygen-containing gas from lung after it has been used for oxygenating said liquid perfluorocarbon, said used oxygen-containing gas further comprising evaporated liquid perfluorocarbon; and a perfluorocarbon condenser in said system adapted to remove said evaporated liquid perfluorocarbon from said collected oxygen-containing gas. - View Dependent Claims (40)
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41. A liquid breathing method, comprising:
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introducing liquid perfluorocarbon into a patients lung; oxygenating said liquid perfluorocarbon with an oxygen-containing gas, to provide a used oxygen-containing gas comprising evaporated liquid perfluorocarbon; collecting said used oxygen-containing gas comprising evaporated liquid perfluorocarbon from said lung; and condensing said evaporated liquid perfluorocarbon from said collected used oxygen-containing gas. - View Dependent Claims (42, 43, 44)
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45. An apparatus for performing partial liquid breathing, comprising:
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an endotracheal tube adapted for attachment to a gas ventilator; a perfluorocarbon delivery conduit feeding into said endotracheal tube in such a manner that discrete breathing gas and liquid perfluorocarbon phases can simultaneously move into the same portion of a patient'"'"'s lungs through said endotracheal tube; and a source of liquid perfluorocarbon connected to said delivery conduit through a flow controller that is responsive to gas flow from said ventilator. - View Dependent Claims (46)
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47. In a method for partial liquid breathing in which breathing gas and liquid perfluorocarbon are simultaneously present in the same portion of a patient'"'"'s lung in discrete phases, and said breathing gas first physically mixes with and oxygenares said liquid perfluorocarbon in the lung as said breathing gas moves into and out of the lung in a gas breathing cycle, the improvement comprising:
pulsing the introduction or removal of liquid perfluorocarbon from the patient'"'"'s lungs in synchrony with said gas breathing cycle. - View Dependent Claims (48, 49)
Specification