Metered administration of a therapeutic gas
First Claim
1. A method for the metered administration of one or more therapeutically effective gases to a patient, comprising a step to remove harmful or undesired substances from the gas carrying system or from parts of the gas-carrying system, characterized in that the therapeutically effective gases are selected from the group consisting of NO, CO, CO2 mixtures used to stimulate breathing, H2 mixtures, SF6 mixtures, and nitrosoethanol, the removal step comprising purging with at least one other gas or gas mixture selected from the group consisting of air, O2, N2, Ar, Xe, He, SF6, mixtures thereof and other gases which do not have a therapeutic effect, supplying the one or more therapeutically effective gases from a gas source through a first line to the patient, providing at least one shut-off valve in the first line in selective flow communication with an outside line leading to the atmosphere, opening the shut-off valve to open flow communication with the outside line, and flowing the purge gas through the first line and out of the outside line to purge the first line.
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Accused Products
Abstract
The invention relates to a method for the metered administration of a therapeutically effective gas to a patient, comprising a step to remove harmful or undesired substances from the gas-carrying system or from parts of the gas-carrying system. According to the invention, the step consists of purging with one or more other gases or gas mixtures and/or it consists of evacuation.
64 Citations
15 Claims
- 1. A method for the metered administration of one or more therapeutically effective gases to a patient, comprising a step to remove harmful or undesired substances from the gas carrying system or from parts of the gas-carrying system, characterized in that the therapeutically effective gases are selected from the group consisting of NO, CO, CO2 mixtures used to stimulate breathing, H2 mixtures, SF6 mixtures, and nitrosoethanol, the removal step comprising purging with at least one other gas or gas mixture selected from the group consisting of air, O2, N2, Ar, Xe, He, SF6, mixtures thereof and other gases which do not have a therapeutic effect, supplying the one or more therapeutically effective gases from a gas source through a first line to the patient, providing at least one shut-off valve in the first line in selective flow communication with an outside line leading to the atmosphere, opening the shut-off valve to open flow communication with the outside line, and flowing the purge gas through the first line and out of the outside line to purge the first line.
- 7. A method for the metered administration of one or more therapeutically effective gases to a patient, comprising a step to remove harmful or undesired substances from the gas-carrying system or from parts of the gas-carrying system, characterized in that the therapeutically effective gases are selected from the group consisting of NO, CO, CO2 mixtures used to stimulate breathing, H2 mixtures, SF6 mixtures, and nitrosoethanol, supplying the one or more therapeutically effective gases from a gas source through a first line to the patient, providing an evacuation line in flow communication with the first line, and evacuating the first line by applying suction to the evacuation line and thereby applying the suction to the first line for removing harmful or undesired substances from the first line.
- 10. A device for the metered administration of one or more therapeutically effective gases to a patient, comprising a device to remove harmful or undesired substances, characterized by a therapeutic gas feed system including a first line feeding therapeutic gases selected from the group consisting of NO, CO, CO2 mixtures used to stimulate breathing, H2 mixtures, SF6 mixtures, and nitrosoethanol, and the removal device including a second gas line in addition to the first gas line, the second gas line comprising purging structure for supplying a purging gas selected from the group consisting of O2, N2, Ar, Xe, He, SF6, mixtures thereof and other gases which do not have a therapeutic effect, at least one shut-off valve in the first line, an outside line in flow communication with the outside valve, the outside line leading to the atmosphere, and the second line being in flow communication with the first line whereby upon opening the shut-off valve to open flow communication with the outside line purge gas may flow through the second line into the first line and into the outside line to the atmosphere.
Specification