Abstract: An anesthetic dispensing device (100) includes a measuring unit (150) for determining an anesthetic concentration in an area of an outlet (142) of the anesthetic dispensing device. The measuring unit is configured to measure a first parameter (154) of a gas concentration-dependent characteristic between a mixer unit (140) and a second parameter (155) of the gas concentration-dependent characteristic in a second gas branch (120) or in an area of a breathing gas feed (112) of the anesthetic dispensing device by at least one sensor element (152). The measuring unit is further configured to determine the anesthetic concentration between the mixer unit and the outlet and to output a corresponding concentration signal (160) as a function of calibration information assigned to the second parameter and of the first parameter.

Abstract: A control system controls fresh gas dispensing for an anesthesia device, with a patient gas-measuring unit, an anesthetic-dispensing unit, a user interface, and a fresh gas regulation unit. With a transition from deactivated assistance mode to activated assistance mode, a processing unit receives a measured signal, a fresh gas signal and an assistance signal and calculates an end tidal anesthetic concentration over time based on a current volume flow, a predefined volume flow and on a current end tidal anesthetic concentration and stores this as a preset curve. A fresh gas correction signal is output upon the determined current end tidal anesthetic concentration leaving a surrounding range of the preset curve. A predefined volume flow curve is changed as a function of the correction signal. The volume flow of fed fresh gas is increased when the surrounding range is undershot and is reduced when the surrounding range is exceeded.

Abstract: A dispensing device for dispensing anesthetic in a breathing gas stream includes a flow duct (42) for an anesthetic-containing breathing gas stream, a control unit (5) and a first temperature sensor (54). An anesthetic feed device (45) has an evaporation surface (46) arranged in the flow duct (42). The first temperature sensor (54) detects the temperature of the evaporation surface (46) and sends a first temperature signal (T1) to the control unit (5). A second temperature sensor (53) detects the temperature of the breathing gas stream in the flow duct (42) and sends a second temperature signal (T2) to the control unit (5). The control unit (5) is configured to determine an anesthetic concentration based on the first and second temperature signals (T1, T2).

Abstract: A gas mixer (100), to which a first gas and a second gas are fed, mixes the two fed gases to form a gas mixture. A helical component (2) is arranged in an interior of an outer component (5). A helical mixing cavity (20) is formed between the outer component and the helical component (2). An additional mixing volume (6) is located in the interior of the outer component (5) or in the interior of the helical component (2). One gas is sent through a first feed line (31) to the helical mixing cavity (20), and the other gas is sent through a second feed line (32) to the additional mixing cavity (6). A gas mixture discharge line (40) discharges the produced gas mixture from the helical mixing cavity (20).

Abstract: A device, for dispensing an anesthetic into a gas stream, has a gas inlet, via which gas to be enriched with anesthetic and coming from a gas source flows in and with a gas outlet, via which gas enriched with anesthetic flows out to a patient port. A heating element, for heating the gas stream, is arranged upstream of an evaporation chamber, for dispensing an anesthetic into the gas stream, between the gas inlet and the gas outlet. The heating element is actuated by a control unit such that heat is fed to the gas to be enriched with anesthetic for evaporation of the anesthetic located in the evaporation chamber as a function of at least one status parameter of the gas to be enriched with the anesthetic and/or of the gas at least partially enriched with the anesthetic.

Abstract: A gas heater (1) and gas heater method heat a carrier gas flow. The gas heater includes a gas inlet (2) a gas outlet (3) and a connecting gas channel (4). A heating system (5), arranged in the gas channel, includes a heat exchanger (12) surface. The carrier gas at least partly flows over the surface to heat the carrier gas flow. The gas channel includes a first section (6), arranged upstream of the heat exchanger in a flow direction, and a second section (7) arranged downstream of the heat exchanger. A respective sensor (8a, 8b), for detecting a pressure value, is in the first and the second section or directly adjacent thereto. Pressure values are transmitted to a control and analysis unit (9) which ascertains a mass and/or volume flow of the carrier gas in the gas channel based on a pressure difference between the two pressure values.

Abstract: An anesthetic dispensing device includes a first gas branch carrying breathing gas through an anesthetic evaporator to a mixer unit. A second gas branch carries breathing gas to the mixer unit. A proportional valve in the second gas branch receives a valve control signal to set a valve opening. A control unit determines a first gas branch flow and a second gas branch flow and a desired chamber pressure of an evaporator chamber of the anesthetic evaporator based on a predefined desired concentration and the branch flows. The control unit determines a desired valve opening of the proportional valve as a function of the desired chamber pressure and to output this as a valve control signal. The desired valve opening is determined such that the desired chamber pressure within the anesthetic dispensing device is reached in the first gas branch due to the desired valve opening.

Abstract: An anesthetic dispensing device (100) includes a measuring unit (150) for determining an anesthetic concentration in an area of an outlet (142) of the anesthetic dispensing device. The measuring unit is configured to measure a first parameter (154) of a gas concentration-dependent characteristic between a mixer unit (140) and a second parameter (155) of the gas concentration-dependent characteristic in a second gas branch (120) or in an area of a breathing gas feed (112) of the anesthetic dispensing device by at least one sensor element (152). The measuring unit is further configured to determine the anesthetic concentration between the mixer unit and the outlet and to output a corresponding concentration signal (160) as a function of calibration information assigned to the second parameter and of the first parameter.

Abstract: A method and device, for enriching a gas flow with an anesthetic, include a gas mixer (1), with gas inlets (2a, 2b) and one or more gas outlets (3a, 3b), and an anesthetic dispenser (4) connected to the one or more gas outlets. The anesthetic dispenser at least partially enriches the gas flow to provide a breathing gas flow enriched with anesthetic at a patient connector (5). A control valve (7a) is arranged fluidically in series with the anesthetic dispenser (4). The gas outlet is connected to the patient connector (5) via a gas channel (8), arranged fluidically parallel to the anesthetic dispenser (4) and in which at least another control valve (7b) is arranged. A control unit (6) actuates at least one control valve as a function of a desired value for an anesthetic concentration in the breathing gas flow to change anesthetic concentration at the patient connector (5).

Abstract: A control system controls fresh gas dispensing for an anesthesia device, with a patient gas-measuring unit, an anesthetic-dispensing unit, a user interface, and a fresh gas regulation unit. With a transition from deactivated assistance mode to activated assistance mode, a processing unit receives a measured signal, a fresh gas signal and an assistance signal and calculates an end tidal anesthetic concentration over time based on a current volume flow, a predefined volume flow and on a current end tidal anesthetic concentration and stores this as a preset curve. A fresh gas correction signal is output upon the determined current end tidal anesthetic concentration leaving a surrounding range of the preset curve. A predefined volume flow curve is changed as a function of the correction signal. The volume flow of fed fresh gas is increased when the surrounding range is undershot and is reduced when the surrounding range is exceeded.

Abstract: A dispensing device for dispensing anesthetic in a breathing gas stream includes a flow duct (42) for an anesthetic-containing breathing gas stream, a control unit (5) and a first temperature sensor (54). An anesthetic feed device (45) has an evaporation surface (46) arranged in the flow duct (42). The first temperature sensor (54) detects the temperature of the evaporation surface (46) and sends a first temperature signal (T1) to the control unit (5). A second temperature sensor (53) detects the temperature of the breathing gas stream in the flow duct (42) and sends a second temperature signal (T2) to the control unit (5). The control unit (5) is configured to determine an anesthetic concentration based on the first and second temperature signals (T1, T2).

Abstract: A gas heater (1) and gas heater method heat a carrier gas flow. The gas heater includes a gas inlet (2) a gas outlet (3) and a connecting gas channel (4). A heating system (5), arranged in the gas channel, includes a heat exchanger (12) surface. The carrier gas at least partly flows over the surface to heat the carrier gas flow. The gas channel includes a first section (6), arranged upstream of the heat exchanger in a flow direction, and a second section (7) arranged downstream of the heat exchanger. A respective sensor (8a, 8b), for detecting a pressure value, is in the first and the second section or directly adjacent thereto. Pressure values are transmitted to a control and analysis unit (9) which ascertains a mass and/or volume flow of the carrier gas in the gas channel based on a pressure difference between the two pressure values.

Abstract: A device 10 for providing a breathing gas stream, which contains a therapeutically active substance, for the mechanical respiration and/or mechanical breathing assistance of a patient, wherein the device 10 has at least one first line 21, through which a first gas stream 31 flows during the operation of the device, and wherein the device 10 has at least one second line 22, wherein the first line 21 and the second line 22 have a common section 13, and wherein the first line 21 and the second line 22 are connected to one another by a water vapor-permeable membrane 24 in the area of the common flow section 13, the present invention provides for a second gas stream 32 to flow through the second line 22 during the operation of the device.

Abstract: A method and device, for enriching a gas flow with an anesthetic, include a gas mixer (1), with gas inlets (2a, 2b) and one or more gas outlets (3a, 3b), and an anesthetic dispenser (4) connected to the one or more gas outlets. The anesthetic dispenser at least partially enriches the gas flow to provide a breathing gas flow enriched with anesthetic at a patient connector (5). A control valve (7a) is arranged fluidically in series with the anesthetic dispenser (4). The gas outlet is connected to the patient connector (5) via a gas channel (8), arranged fluidically parallel to the anesthetic dispenser (4) and in which at least another control valve (7b) is arranged. A control unit (6) actuates at least one control valve as a function of a desired value for an anesthetic concentration in the breathing gas flow to change anesthetic concentration at the patient connector (5).

Abstract: A device, for dispensing an anesthetic into a gas stream, has a gas inlet, via which gas to be enriched with anesthetic and coming from a gas source flows in and with a gas outlet, via which gas enriched with anesthetic flows out to a patient port. A heating element, for heating the gas stream, is arranged upstream of an evaporation chamber, for dispensing an anesthetic into the gas stream, between the gas inlet and the gas outlet. The heating element is actuated by a control unit such that heat is fed to the gas to be enriched with anesthetic for evaporation of the anesthetic located in the evaporation chamber as a function of at least one status parameter of the gas to be enriched with the anesthetic and/or of the gas at least partially enriched with the anesthetic.

Abstract: A respiratory support device (10) includes a ventilator (20) which allows spontaneous breathing, a control device (30), a dosing device (40) for pharmaceutically active substances, and at least one first measuring device (50). Pharmacodynamic and/or pharmacokinetic data of pharmaceutically active substances and/or compositions as well as comparison data for different respiration parameters are stored in the control device (30). The measuring device (50) is configured to detect one or more respiration parameters. The measuring device (50) or another measuring device is additionally configured such that the effective active ingredient quantity of one or more pharmaceutical substances dispensed by the dosing device can be detected using the measuring device. A device for exchanging data in a bidirectional manner is arranged at least between the control device and the measuring device and/or the dosing device.

Abstract: A device 10 for providing a breathing gas stream, which contains a therapeutically active substance, for the mechanical respiration and/or mechanical breathing assistance of a patient, wherein the device 10 has at least one first line 21, through which a first gas stream 31 flows during the operation of the device, and wherein the device 10 has at least one second line 22, wherein the first line 21 and the second line 22 have a common section 13, and wherein the first line 21 and the second line 22 are connected to one another by a water vapor-permeable membrane 24 in the area of the common flow section 13, the present invention provides for a second gas stream 32 to flow through the second line 22 during the operation of the device.

Abstract: An anesthetic gas intermediate storage unit is provided having a first gas duct for passing through inspiration gas, a second gas duct for passing through expiration gas and an adsorption material (2), which can be influenced electrically, for an anesthetic, which is carried by a gas. The adsorption material is arranged in at least one gas duct for passing through breathing gas, and with a device for admitting expiration gas and inspiration gas alternatingly to the adsorption material (2), at least at an identical area for the intermediate storage of the anesthetic from the expiration gas to the inspiration gas. The device has openings, which divert the expiration gas and inspiration gas flowing in and out such that expiration gas and inspiration gas are admitted to the stationary adsorption material (2) alternatingly at an identical area.

Abstract: A device for adsorbing and desorbing anesthetic shall be improved in respect of the anesthetic supply. A sampling device (16) for removing a gas volume of the breathing gas and an anesthetic dispenser (18) are connected to the breathing gas line (8) between the adsorption filter (9) and the patient (10) in such a way that the gas volume removed and the gas volume supplied are compensated.

Abstract: A device is provided for adsorbing and desorbing anesthetic has good control of anesthetic dispensing such as in an anesthetic system. An adsorption filter is provided with adsorption beds (13, 14), which can be pivoted between an inspiration line (4) and an expiration line (6). The anesthetic is dispensed in the expiration line (6) on the incoming flow side of the adsorption bed (14) arranged there.