DEVICE, AN AGGREGATE AND A METHOD FOR PROVIDING A GASIFIED ANESTHETIC AGENT
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Abstract
A respiratory anesthetic aggregate devised for coupling to a breathing apparatus has an anesthetic gasifier unit that has a breathing gas input port connected to a first point in an inspiratory patient gas delivery path of a breathing apparatus, and a fresh gas output port connected to a second point in the patient gas delivery path downstream the first point. The inspiratory patient gas delivery path is connected via a mainstream connection between the first and second point. Thereby the anesthetic gasifier unit is connected in a sidestream configuration to the patient gas delivery path for adding the gasified anesthetic agent in a desired concentration to the patient gas delivery path at the second point. The When aggregate is coupled to a breathing apparatus, a substantially volume neutral delivery of anesthetic agent is provided a to the breathing apparatus.
23 Citations
53 Claims
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1-25. -25. (canceled)
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26. A respiratory anesthetic aggregate for coupling to a breathing apparatus, said aggregate comprising:
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an anesthetic gasifier unit that gasifies an anesthetic agent, said gasifier unit comprising a breathing gas input port and a fresh gas output port; said breathing gas input port being adapted for connection to a first point in an inspiratory patient gas delivery path of said breathing apparatus by a breathing gas input line; said fresh gas output port being adapted for connection to a second point in said inspiratory patient gas delivery path via a fresh gas output line; said second point being downstream of said first point in said inspiratory patient gas delivery path, and said inspiratory patient gas delivery path being connected via a mainstream connection of breathing gas between said first point and said second point; said anesthetic gasifier unit being connected in a sidestream configuration to said inspiratory patient gas delivery path to add said gasified anesthetic agent in a desired concentration to said inspiratory patient gas delivery path at said second point; a flow generator unit that provides a flow of breathing gas from said first point to said breathing gas input port of said anesthetic gasifier unit; and said flow generator unit being configured to provide a rate of said flow of breathing gas to said anesthetic gasifier unit from said first point that is less than a flow of gas supplied through said inspiratory patient gas delivery path by said breathing apparatus to said first point, to make a flow of gas via said mainstream connection toward said patient larger than zero when said flow generator unit provides a flow of breathing gas from said first point to said breathing gas input port of said anesthetic gasifier unit. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. A combination comprising:
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a breathing apparatus; a respiratory anesthetic aggregate coupled to said breathing apparatus, said aggregate comprising an anesthetic gasifier unit that gasifies an anesthetic agent, said gasifier unit comprising a breathing gas input port and a fresh gas output port; said breathing gas input port being adapted for connection to a first point in an inspiratory patient gas delivery path of said breathing apparatus by a breathing gas input line; said fresh gas output port being adapted for connection to a second point in said inspiratory patient gas delivery path via a fresh gas output line; said second point being downstream of said first point in said inspiratory patient gas delivery path, and said inspiratory patient gas delivery path being connected via a mainstream connection of breathing gas between said first point and said second point; said anesthetic gasifier unit being connected in a sidestream configuration to said inspiratory patient gas delivery path to add said gasified anesthetic agent in a desired concentration to said inspiratory patient gas delivery path at said second point; a flow generator unit that provides a flow of breathing gas from said first point to said breathing gas input port of said anesthetic gasifier unit; and said flow generator unit being configured to provide a rate of said flow of breathing gas to said anesthetic gasifier unit from said first point that is less than a flow of gas supplied through said inspiratory patient gas delivery path by said breathing apparatus to said first point, to make a flow of gas via said mainstream connection toward said patient larger than zero when said flow generator unit provides a flow of breathing gas from said first point to said breathing gas input port of said anesthetic gasifier unit. - View Dependent Claims (43, 44, 45)
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46. A non-transitory computer-readable storage medium encoded with programming instructions, said programming instructions comprising:
a code segment for controlling delivery of an anesthetic agent from an anesthetic gasifier unit connected to an inspiratory line of a breathing apparatus in a sidestream configuration.
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47. A method of supplying a substantially volume neutral fresh gas supply in a breathing apparatus, said method comprising providing an anesthetic gasifier unit;
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adding anesthesia capability to said breathing apparatus =by connecting said anesthetic gasifier unit to an inspiratory line of a breathing apparatus in a sidestream configuration. - View Dependent Claims (48, 49, 50)
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51. A respiratory anesthetic aggregate:
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for coupling to a breathing apparatus, said aggregate comprising an anesthetic gasifier unit that gasifies an anesthetic agent, said gasifier unit comprising a breathing gas input port and a fresh gas output port; said breathing gas input port being connected to a first point in an inspiratory patient gas delivery path of said breathing apparatus by a breathing gas input line; said fresh gas output port is connected to a second point in said inspiratory patient gas delivery path via a fresh gas output line; said second point downstream said first point in said inspiratory patient gas delivery path, and said inspiratory patient gas delivery path is connected via a mainstream connection of breathing gas between said first point and said second point; said anesthetic gasifier unit is connected in a sidestream configuration to said inspiratory patient gas delivery path for adding said gasified anesthetic agent in a desired concentration to said inspiratory patient gas delivery path at said second point; a flow generator that provides a flow of breathing gas from said first point to said breathing gas input port of said anesthetic gasifier unit; and said aggregate comprises a control unit configured to regulate said desired concentration of said gasified anesthetic agent in said inspiratory patient gas delivery path, said control unit being configured to detect a connection of said anesthetic gasifier unit to said inspiratory patient gas delivery path and a patient connected thereto, by an input of at least one of a) a pressure data provided by a pressure sensor that measures a pressure in said breathing gas input line, b) a flow data of a flow in said inspiratory patient gas delivery path, and c) a capnogram data related to CO2 fluctuations in said inspiratory patient gas delivery path, and said control unit being configured to allow delivery of said anesthetic agent from said anesthetic gasifier unit only when said connection is detected. - View Dependent Claims (52, 53)
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Specification