BREATHING APPARATUS AND METHOD FOR CONTROLLING A BREATHING APPARATUS

Abstract

The invention relates to a breathing apparatus (15), which is connected to a sensor system (30) and to a control system (24), wherein the sensor system (30) is designed for capturing at least two items of measurement data (31) and for transmitting the captured measurement data (31) to the breathing apparatus (15) or the control logic module (25). The control system (24) is further connected to at least one indicating device (35), wherein the at least one indicating device (35) has a configurable screen (33). The control system (24) is designed for the presentation of indicated data (62, 65) based on the captured measurement data (31), which may be displayed on a first graphical unit (29) on the at least one indicating device (35). The invention furthermore relates to a method for controlling a breathing apparatus (15).

Claims

1.-10. (canceled)

11. A ventilator (15) which is connected to a sensor system (30) as well as to a control system (24), wherein the sensor system (30) is configured to acquire at least two items of measurement data (31) as well as to transmit the acquired measurement data (31) to the ventilator (15) or a control logic module (25), and wherein the control system (24) is connected to at least one display means (35), wherein the at least one display means (35) comprises a configurable screen (33), and wherein the control system (24) is configured to provide display data (62, 65) on the basis of the acquired measurement data (31), which can be displayed on a first graphics unit (29) on the at least one display means (35).

12. The ventilator as claimed in claim 11, wherein the control unit (24) is provided with the control logic module (25) or a graphic logic module (36).

13. The ventilator as claimed in claim 12, wherein the control logic module (25) or a graphic logic module (36) each provided with a computing unit (26, 37).

14. The ventilator as claimed in claim 11, wherein the configurable screen (33) is a touch-sensitive screen.

15. The ventilator as claimed in claim 11, wherein a sensor (34) is provided for acquiring at least one region (38) of the at least one display means (35).

16. A method for controlling a ventilator (15) as claimed in claim 1, comprising the following steps: a) acquiring at least two items of measurement data (31) with the sensor system (30); b) transmitting the acquired measurement data (31) from the sensor system (30) to the ventilator (15) or to the control system (24); c) receiving at least individual items of acquired measurement data (31) from the ventilator (15) or from the control system (24); d) providing display data (62, 65) which are produced on the basis of at least individual items of received measurement data (31); e) displaying at least individual items of display data (62, 65) in a first animated representation (40) of a respiratory gas (41) on a first graphics unit (29) of the at least one display means (35).

17. The method as claimed in claim 16, wherein the received measurement data (31) are subsequently processed by the ventilator (15) or by the control system (24).

18. The method as claimed in claim 16, wherein the display data (62, 65) are provided by means of the control system (24).

19. The method as claimed in claim 16, whereupon the at least individual items of display data (62, 65) are represented by at least individual geometrical elements (43).

20. The method as claimed in claim 16, wherein the measurement data (31) received from the control logic module (25) of the control system (24) in step c) are transmitted to a graphic logic module (36) of the control system (24).

21. The method as claimed in claim 20, wherein at least individual items of transmitted measurement data (31) are processed by the graphic logic module (36) in order to provide display data (62, 65).

22. The method as claimed in claim 20, wherein an at least one computing unit (26, 37) of the control logic module (25) or of the graphic logic module (36) calculates at least one distribution or disposition of the respiratory gas (41) with an aid of the received individual items of the measurement data (31).

23. The method as claimed in claim 22, wherein the distribution or the disposition of the respiratory gas (41) is displayed in at least the first animatable representation (40) of the respiratory gas (41).

24. The method as claimed in claim 16, wherein in step c), the received measurement data (31) are divided into categories of measurement data in the control system (24), wherein at least individual items of measurement data (31) from at least one measurement data category are transmitted to the graphic logic module (36) of the control system (24).

25. The method as claimed in claim 24, wherein all of the measurement data (31) from the at least one measurement data category is transmitted to the graphic logic module (36), or at least individual items of measurement data (31) from a measurement data category are transmitted to the at least one display means (35).

26. The method as claimed in claim 24, wherein all of the measurement data (31) from the one measurement data category is transmitted to the at least one display means (35).

27. The method as claimed in claim 16, wherein at least individual items of the display data (62, 65) are displayed with a further animatable representation (50) in the at least one display means (35).

28. The method as claimed in claim 27, wherein at least individual items of the display data (62, 65) are displayed with an aid of at least individual further geometrical elements (43) which are displayed in the further animatable representation (50).

29. The method as claimed in claim 28, wherein at least individual items of the display data (62, 65) are displayed on the further animatable representation (50) in the first graphics unit (29) of the at least one display means (35).

30. The method as claimed in claim 16, wherein at least the first graphics unit (29) of the at least one display means (35) can be modified at least in regions, wherein a modification of at least one region of the first graphics unit (29) generates a control value which is subsequently transmitted to the control system (24) and the control value which is transmitted to the control system (24) is used to control (24) at least one respiratory parameter (16) of the ventilator (15).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0070] In the figures:

[0071] FIG. 1 shows a first embodiment of the ventilator with a first animatable representation of a respiratory gas in accordance with the invention in a lung as the first graphics unit on a display means in a perspective view,

[0072] FIG. 2 shows the animatable representation of the respiratory gas in a lung as the first graphics unit in accordance with FIG. 1 upon inhalation, in a perspective view,

[0073] FIG. 3 shows the animatable representation of the respiratory gas in a filled lung as the first graphics unit in accordance with FIG. 1, in a perspective view,

[0074] FIG. 4 shows a further animatable representation of the respiratory gas in a lung as the first graphics unit in accordance with FIG. 1, in a perspective view,

[0075] FIG. 5 shows a further animatable representation of the respiratory gas in a lung as the first graphics unit in accordance with FIG. 1, in a further perspective view,

[0076] FIG. 6 shows a further animatable representation of the respiratory gas in a lung as the first graphics unit in accordance with FIG. 1, in a further perspective view,

[0077] FIG. 7 shows a further animatable representation of the respiratory gas in a lung as the first graphics unit in accordance with FIG. 1, in a further perspective view,

[0078] FIG. 8 shows a further animatable representation of the respiratory gas in a lung as the first graphics unit in accordance with FIG. 1, in a further perspective view,

[0079] FIG. 9 shows a further animatable representation of the respiratory gas in a lung as the first graphics unit in accordance with FIG. 1, in a further perspective view,

[0080] FIG. 10 shows a further animatable representation of the respiratory gas in a lung as the first graphics unit in accordance with FIG. 1, in a further perspective view, and

[0081] FIG. 11 shows a further animatable representation of the respiratory gas in a lung as the first graphics unit in accordance with FIG. 1, in a further perspective view,

[0082] FIG. 12 shows a further animatable representation in a bar chart as the second graphics unit; in accordance with FIG. 1, in a further perspective view.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0083] FIG. 1 shows a ventilator 15 with a housing 17 on the housing wall 18 of which a connecting means 20 is disposed. A first display means 35 is disposed on the housing front 19. A control system with a control logic module 25 which comprises a computing unit 26 (for example a processor) and a storage means 27 are positioned in the housing 17 of the ventilator 15, along with a graphic logic module 36 which comprises a computing unit 37 (for example a processor). The control logic module 25 and the graphic logic module 36 are electrically connected to each other with the aid of data lines 28. In addition to supply connections 21 (such as current supply, internet connection, gateway connection etc), the connecting means 20 comprises a ventilation tube connection 22 as well as a plurality of sensor connections 23. Measurement data 31 acquired from the external sensor system 30 are transmitted to the control logic module 25 with the aid of conventional data connections 32 (cable, WLAN, Bluetooth, etc) and, for example, A/D transformers (not shown) by means of the sensor connection 23 and the ventilation tube connection 22. In the control logic module 25, the acquired measurement data 31 are either processed directly and/or transmitted to the graphic logic module 36 and at least a portion thereof is stored in the storage means 27. The control logic module 25 is connected to the first display means 35 via data lines 28. A sensor 34 is provided on the first display means 35, which captures a region 38 of the display means 35. The first display means 35 has a configurable screen 33 with a first graphics unit 29 and a second graphics unit 39. The first graphics unit 20 comprises the animatable representation 40 of the respiratory gas 41 in the lung 42. The second graphics unit 39 displays a chart 60 (y,t chart) with which the variation with time of one of the items of display data 65 as well as the numerical details of individual items of display data 62 are displayed. The respiratory parameters 16 are displayed directly on the first display means 35 with the aid of the display data 62, 65 or will initially be processed in the computing unit 26 of the control logic module 25 and subsequently displayed as display data 65 on the first display means 35 and/or in the first graphics unit 29 with an appropriate distribution of the respiratory gas 41 (homogeneous or non-homogeneous distribution, Gaussian distribution, exponential distribution, etc). The housing front 19 furthermore has an input means 70 which is electrically connected to the control logic module 25 with the aid of data lines 28, and with which the operator 90 (for example medical professionals) of the ventilator 15 can input individual respiratory parameters 16 as well as patient parameters 80.

[0084] As an example, the ventilator 15 is connected to a tomographic measuring device (not shown) which transmits its measurement data 31 to the control logic module 25. These measurement data 31 contribute to the processing of respiratory parameters 16, wherein the computing unit 26 of the control logic module 25 uses it, for example, to calculate the distribution of the respiratory gas 43 in the lung 42 and subsequently enters the result thereof into the animatable representation 40 of the respiratory gas 41. An electrical impedance tomography measuring device is envisaged as the preferred tomographic measuring device.

[0085] The following FIGS. 2 to 11 show the various embodiments of the animatable representations 40, 50 of the respiratory gas 41 in the lung 42 in the first graphics unit 29, wherein the lung 42 consists of two sections of the lung, or lobes, 44, 45, which are linked together by the trachea 48 as well as the respective bronchial tubes 46. The respiratory gas 41 is composed of a plurality of components (for example oxygen, nitrogen, noble gases, carbon dioxide, etc), which are displayed on the first display means 35 with the aid of a variety of respiratory parameters 16 or display data 62, 65 as well as being represented by geometrical elements 43 which can be distinguished from each other. In this regard, the geometrical elements 43 are shown in a two-dimensional manner (for example circles, dashes, triangles, etc) or in a three-dimensional manner (spheres, bars, pyramids, etc). The geometrical elements 43 of the animatable representation 40 are displayed in various manners which depend on the embodiment of the ventilator 15 in accordance with the invention, in different elemental sizes, elemental shapes as well as elemental colours.

[0086] As an example, all of the respiratory parameters 16 or display data 62, 65 are displayed in the animatable representation 40 as circles which differ in their diameter.

[0087] In the animatable representation 40, in the healthy state, the geometrical elements 43 are distributed homogeneously and completely when the lung 42 is filled, starting from the trachea 48, via the bronchial tubes 46 into the two sections of the lung 44, 45 (FIG. 2 and FIG. 3). Here, the parameters of oxygen concentration, provided by the control logic module 25 with the aid of the measured inhaled oxygen (FiO2_mess), the established fraction of the inhaled oxygen (FiO2_set), and the measured oxygen saturation (SpO2), the carbon dioxide parameter, which is measured with the aid of a CO.sub.2 sensor, as well as the parameter for the lung overpressure, which is provided by the control logic module 25 with the aid of the measured proximal pressure and the tracheal pressure, can respectively be characterized with the same geometrical element 43, but with different elemental colours and/or elemental sizes in the animatable representation 40 (FIG. 3).

[0088] FIG. 4 shows the animatable representation 40 of the respiratory gas 41 in the lung 42, wherein in the case of a hyperinflatory lung 42, the respiratory gas 41 collects in the lower region of the lung 47 of the sections of the lung 43, 44. By measuring the automatic positive end-expiratory pressure parameter (auto-PEEP) continuously with the aid of a suitable sensor system 30, an increasing measurement value for the auto-PEEP is evaluated by the control logic module 25 and is depicted in the animatable representation 40. To this end, in the animatable representation 40, the exhausted respiratory gas fraction (for example the saturated carbon dioxide fraction or the exhausted oxygen fraction) and the fresh respiratory gas fraction (freshly supplied respiratory gases 41) are shown in different shades of grey with the same geometrical element 43.

[0089] When measuring the PEEP, those regions of the lung 47 (for example pulmonary alveoli) which still contain residual respiratory gas 41 can be depicted with the aid of the animatable representation 40 of the respiratory gas 41. These pulmonary alveoli on the bronchial tubes 46 are respectively depicted with the aid of a geometrical element 43 (a circle) (FIG. 5).

[0090] As can be seen in FIG. 6, a restriction in the trachea 48 can be animated with the aid of the further representation 50. Here, the trachea wall 51 as well as the bronchial wall 52 are shown with thicker lines and in a colour that is different from that for a healthy lung. In addition, the respiratory gas 41 in this animated representation 40 is disposed such that the geometrical elements can be positioned one behind the other in a line.

[0091] FIG. 7 shows a lung 42 with an increased compliance of the lung. This is determined by the control logic module 25 using the compliance as a respiratory parameter 16 and is shown by means of a combination of the first animatable representation 40 of the respiratory gas 41, which shows a spatially restricted distribution of the geometrical elements 43 in the sections of the lung 44, 45 and of the further animatable representation 50, which shows up as coloured highlighting of the wall of the lobe of the lung 53. In this regard, the degree of lung lobe compliance is represented by the width of the coloured highlighting of the wall of the lobe of the lung 53. In addition, the diaphragm 55 is shown in a different colour, which is processed in the control logic module 25 when spontaneous breathing of the patient is measured and is shown in the further animatable representation 50.

[0092] FIG. 8 and FIG. 9 show the animatable representation 50 of an oesophageal pressure measurement in the lung 42, wherein the conclusions drawn from the oesophageal pressure measurement are displayed with the aid of the geometrical elements 43 in the form of measuring bars outside the lung 42. In this regard, the control logic module 25 processes measurement data 31 for the lung pressure measurement and the intrapleural pressure measurement in the lung 42, in which, for example, a difference value for the measurement data 31 is produced, which is then shown as display data 62, 65 in the animatable representation 50 in the form of measuring bars with different colours.

[0093] FIG. 10 and FIG. 11 show the representation of a ratio of the PEEP value to the difference between the PEEP value and the pressure upon inspiration (PINSP) which are processed by the control logic module 25 and then are depicted in the lung with the aid of the animatable representation 40. If the values for the ratio are raised, the elemental colour of the geometrical elements 43 changes and are highlighted in colour in the lung 42 with the aid of the measuring bar. In a preferred embodiment, the method for controlling a ventilator 15 in accordance with the invention comprises the following steps:

[0094] After the sensor system 30 has acquired measurement data 31, the measurement data 31 are delivered to the ventilator 15 and its control system 24 and are then processed by the ventilator 15 by storing the measurement data 31 in the storage means 27 and/or by processing in the control system 24. There, measurement data 31 are either combined with data from the storage means 27 or processed in a manner such that they are displayed as display data 62, 65. In the processing process, the computing unit 26 of the control logic module 25 or the computing unit 37 of the graphic logic module 36 quantitatively and qualitatively combines the measurement data 31 (optionally with historical measurement data) with the input respiratory parameters 16. After combining the respiratory parameters 16, the control logic module 25 assigns those respiratory parameters 16 which are shown in one of the animatable representations 40, 50 of the respiratory gas 41 to a geometrical element 43 and displays it in the first graphics unit 29 with the associated elemental shape, elemental colour and elemental size. At the same time, the control logic module 25 or the graphic logic module 36 determines the variation of the same respiratory parameters 16 with time and displays them in the chart 60 with the same colours or with the same shape or elemental size. At the same time, display parameters 62 are displayed on the second graphics unit.

[0095] As an example, the opening up of collapsed regions of the lung (lung recruitment) can be depicted as an animation. In a first step in this regard, a controllable respiratory pressure (for example the PEEP) is slowly raised, whereupon its variation with time in chart 60 as well as the associated geometrical element 43 are shown in the same colour in the animatable representation 40. Next, ventilation is stopped, the respiratory pressure (for example the PEEP) is slowly reduced again, whereupon its variation with time is displayed in the chart 60 and also the geometrical element 43 is displayed in the animatable representation 40 in the same colour, but can be distinguished from the first step. These two steps are repeated until the greatest difference (hysteresis) is established in the two steps. The respiratory pressure (for example the PEEP) determined thereby is subsequently passed from the control logic module 25 to the control system 24 and is given as the new control value in the ventilator 15. When there is a change (possibly an unforeseen malfunction), the operator 90 can interface directly with the control system on the ventilator 15 by changing one of the items of display data 62, 65 in the first graphics unit 29. This generates a control value which is then transmitted to the control system 40. The geometrical elements 43 described above which represent the individual respiratory parameters 16 or display parameters 65 in the lung 42 can differ in their shape, size as well as colour from each other, depending on the embodiment.

[0096] FIG. 12 shows an animatable representation of a parameter 66 in a bar chart 61 as the second graphics unit 39 on the configurable screen 33. The bar chart 61 has an upper limit 64 and a lower limit 65. As an example, the bar chart 61 represents a particularly relevant parameter 66 of the ventilator such as, for example, the ventilation performance or the overall performance or the transpulmonary performance. The maximum allowable value or minimum allowable value for the parameter 66 is shown by the upper limit 64 or the lower limit 65, whereupon the risk zone for the parameter 66 can be shown to the operator 90. At the same time, further significant display data 62, 65 such as, for example, the dead volume or the respiratory rate, can be shown on the upper limit 64 and the lower limit 65. The upper limit 64 and the lower limit 65 can be determined for the patient 75 to be ventilated, whereupon a variation in the parameter 66 can be shown as an animation. As an example, a change to the parameter 66 can be shown with an animated change to the representational colour. The representation of the second graphics unit 39 together with the representation of the first graphics unit 29 can be shown as an animation.

REFERENCE LIST

[0097] 15 ventilator [0098] 16 respiratory parameter [0099] 17 housing [0100] 18 housing wall [0101] 19 housing front [0102] 20 connecting means [0103] 21 supply connections [0104] 22 ventilation tube connection [0105] 23 sensor connections [0106] 24 control system [0107] 25 control logic module [0108] 26 computing unit for 25 [0109] 27 storage means [0110] 28 data lines [0111] 29 first graphics unit [0112] 30 measurement data [0113] 31 sensor system [0114] 32 data link [0115] 33 configurable screen [0116] 34 sensor [0117] 35 first display means [0118] 36 graphic logic module [0119] 37 computing unit for 36 [0120] 38 region [0121] 39 second graphics unit [0122] 40 animatable representation [0123] 41 respiratory gas [0124] 42 lung [0125] 43 geometrical element [0126] 44 section of lung [0127] 45 section of lung [0128] 46 bronchial tubes [0129] 47 lung region [0130] 48 trachea [0131] 50 further animatable representation [0132] 51 trachea wall [0133] 52 bronchial tube wall [0134] 53 lobe wall [0135] 55 diaphragm [0136] 60 chart (y,t chart) [0137] 61 bar chart [0138] 62 display data (digital) [0139] 63 lower limit [0140] 64 upper limit [0141] 65 display data (digital) [0142] 66 parameter [0143] 70 input means [0144] 75 patient [0145] 80 patient parameter [0146] 90 operator