Flow control system for anesthesia apparatus
First Claim
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1. Analgesia/anesthesia apparatus comprising in combination the following:
- separate gas flow lines and associated means for connection of said lines to separate supplies of at least two gases;
means, in each said line, for varying the rate of gas flow through said line;
encoder means, coupled to said gas flow rate varying means, for encoding the state thereof;
first means for visual display responsive to the output of said encoder means;
calculator means, coupled to said gas flow rate varying means, for generating signals representative of the ratio of one of said rates of gas flows to the total gas rate of flow; and
separate second means for visual display of said ratio responsive to said generated signals.
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Abstract
An electronic analgesia/anesthesia apparatus is provided for the administration of a mixture of gases. This said apparatus has separate controls for independently increasing or decreasing the flow rate of each particular gas to be delivered thereby and includes an electrical circuit operatively connected to each control for driving a display indicative of the flow rate of the gas and a percentage calculator connected to each individual control for calculating the percentage of a particular gas with respect to the total gas flow and for displaying same; high and low pressure limit alarms and a pressure responsive safety control are included.
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Citations
19 Claims
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1. Analgesia/anesthesia apparatus comprising in combination the following:
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separate gas flow lines and associated means for connection of said lines to separate supplies of at least two gases; means, in each said line, for varying the rate of gas flow through said line; encoder means, coupled to said gas flow rate varying means, for encoding the state thereof; first means for visual display responsive to the output of said encoder means; calculator means, coupled to said gas flow rate varying means, for generating signals representative of the ratio of one of said rates of gas flows to the total gas rate of flow; and separate second means for visual display of said ratio responsive to said generated signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. Control apparatus for administration of anesthetic gas, comprising:
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means for connecting to said anesthetic gas, including a separate gas flow line; means, connected to said connecting means, for varying the volume of said anesthetic gas flowing through said gas flow line; means for computing the flow rate of said anesthetic gas responsive to the status of said anesthetic gas volume varying means; means for digitally displaying said flow rate computed; means for connecting to a second gas, including a second separate gas flow line; means for varying the volume of said second gas flowing through said second separate gas flow line; means for computing the flow rate of said second gas responsive to the status of said second gas volume varying means; means for digitally displaying said second gas flow rate computed being driven by said computing means; means, responsive to the status of said anesthetic gas varying means and said second gas varying means, for calculating the percentage volume administered of one of said gases with respect to the total volume of both; and means, operably associated with said percentage calculating means, for digitally displaying said percentage calculated.
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17. Control apparatus for administration of anesthetic gas, comprising:
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means for connecting to said anesthetic gas, including a separate gas flow line; means, connected to said connecting means, for varying the volume of said anesthetic gas flowing through said gas flow line; means for computing the flow rate of said anesthetic gas responsive to the status of said anesthetic gas volume varying means; means for displaying said flow rate computed; means for connecting to a second gas, including second separate gas flow line; means for varying the volume of said second gas flowing through said second separate gas flow line; means for computing the flow rate of said second gas responsive to the status of said second gas volume varying means; means for displaying said second gas flow rate computed being driven by said computing means; means, responsive to the status of said anesthetic gas varying means and said second gas varying means, for calculating the percentage volume administered of one of said gases with respect to the sum total volume of gas flow; and means, operably associated with said percentage calculating means, for digitally displaying said percentage calculated.
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18. A flow control system for an analgesic/anesthesia apparatus having gas delivery lines, comprising:
at least two independent gas flow lines, a separate gas flow rate adjustment component within each said line capable of individually and independently adjusting the flow rate of gas, an alphanumeric display of a percentage of a particular gas flow rate to the total gas flow rate, said alphanumeric display being responsive to each of said individual flow rate adjustments, a separate digital display responsive to each of said flow rate adjustments, wherein each display is individually driven by a separate calculation component responsive to an individual flow rate adjustment, and wherein each separate calculation component responsive to an individual flow rate adjustment includes a digital encoder. - View Dependent Claims (19)
Specification