Recovery Components

Abstract

A resuscitation assembly (5) includes a patient mask (13), a resuscitator bag (11), an intermediate portion (15) between the patient mask and the resuscitator bag, and an exhalation outlet (17). A microphone (27) is arranged to be acoustically connected to an airflow inside or outside the resuscitation assembly. A processing unit (53) is arranged to be connected to the microphone (27). The processing unit (53) provides an output based on the sound signal recorded by the microphone (27).

Description

Technical Field

[0001] This invention relates to a resuscitation component, and more particularly to the purpose of ensuring the proper use of the resuscitation component. Background Technology

[0002] Common resuscitation components include a ventilation bag to provide the pressure necessary to inflate an unbreathable patient. Additionally, they have a patient mask that seals around the patient's nose and mouth. During use, the operator needs to properly apply the mask to the patient's face while compressing the bag to provide inflation.

[0003] Checking whether ventilation is correct is not always easy. In some cases, the operator may perform several intended inflations without wearing the mask correctly or without detecting airway obstruction in the patient.

[0004] Publication DE202006006312U1 presents the idea of ​​providing a breathing bag for emergency resuscitation with a whistle in the exhalation valve. The whistle emits an audible signal when the patient is exhaling, thus indicating correct use of the breathing bag. The absence of a whistle indicates incorrect use of the breathing bag.

[0005] US2002117173A1 discloses a resuscitation system in one of these embodiments, wherein a microphone is connected to be associated with an airflow through an exhalation port. The microphone is connected to a signal processor via a wire, and an earpiece is also connected to the signal processor via a wire. Summary of the Invention

[0006] According to a first aspect of the invention, a resuscitation assembly is provided, comprising a patient mask, a resuscitator bag, an intermediate portion between the patient mask and the resuscitator bag, and an exhalation outlet. The resuscitation assembly also includes a microphone acoustically connected to its interior or exterior airflow, and a processing unit connected to the microphone. The processing unit is configured to provide an output based on an audio signal recorded by the microphone.

[0007] Here, the term "intermediate section" refers to the portion of the resuscitation assembly positioned between the patient mask and the resuscitator bag. The intermediate section distributes airflow according to the direction of airflow.

[0008] When a processing unit is configured to provide the output, it is typically programmed to do so. This output can take various forms, such as a sound played on a speaker or a graphical representation of recorded sound. The processing unit will typically take the form of a CPU (Central Processing Unit) or a microcontroller.

[0009] In some embodiments, the recovery component may further include an acoustic waveguide that forms at least a portion of the acoustic connection between the microphone and the airflow.

[0010] Advantageously, acoustic waveguides can be flexible waveguides, such as flexible tubes.

[0011] Advantageously, an acoustic waveguide is connected between the central section and the microphone. This allows the microphone to be positioned away from the patient while still being used to pick up sound from airflow inside or outside the central section. It also helps prevent microphone contamination, eliminating the need for sterilization / cleaning after each use.

[0012] In some alternative embodiments, the microphone and processing unit can be directly attached to the middle section.

[0013] The term "directly attached" means that there is no flexible intermediate connection between the microphone and the processing unit, or between the microphone and the intermediate section. In other words, moving the intermediate section will cause the microphone and the processing unit to move.

[0014] Advantageously, the microphone and processing unit can be embedded in a shared device. Typically, in this embodiment, the device may also include a wireless communication unit for transmitting the recorded sound, such as to an external processing unit, like a tablet or computer.

[0015] The intermediate portion may include a valve assembly and an adapter, wherein the adapter is disposed between the valve assembly and the patient mask. The adapter includes a mask interface configured to attach against the patient mask and an opposing interface configured to attach against the valve assembly. The adapter also includes a pickup nozzle acoustically connected to a microphone.

[0016] The adapter may have a body with a through channel through which inflation and exhalation airflows can flow.

[0017] The mouthpiece can be advantageously positioned within a reciprocating airflow generated by the patient's inflation and exhalation during resuscitation device operation.

[0018] Preferably, the mask interface and the opposite interface are interfaces conforming to the ISO 5356 standard for patient ventilation equipment.

[0019] The adapter may also include a interference arrangement configured to provide different sounds depending on the direction of the flow passing through the adapter.

[0020] Interference arrangements can have various designs, such as baffles mounted on the inner wall of the main body / through channel, or as part of the microphone. By designing interference arrangements so that the two airflows are affected differently due to their different directions, different sounds will be produced depending on the direction of the flow. This allows the processing unit to distinguish the sound of exhaled airflow and inhaled airflow.

[0021] The recovery assembly may include a microphone assembly, wherein the microphone assembly includes a microphone and a soundproof enclosure. The soundproof enclosure includes soundproofing material.

[0022] The term "soundproofing material" refers to a material used to reduce the amount of external sound reaching a microphone. This material can typically be metal or plastic, and is preferably combined with soft materials such as wadding, cotton, or fillers to isolate both high and low sound frequencies from the surrounding environment.

[0023] In some embodiments, the resuscitation assembly may include an exhalation outlet and a connection interface, the exhalation outlet including one or more outlet ports, and wherein the connection interface constitutes an acoustic connection to a microphone.

[0024] In embodiments that include the acoustic waveguide (such as a flexible tube), the acoustic waveguide may be connected to a connection interface. In other embodiments, a microphone assembly may be connected to the connection interface.

[0025] In embodiments where the microphone assembly is directly connected to the intermediate section, the resuscitation assembly may include a diaphragm to prevent contamination of the microphone assembly. The diaphragm may be positioned between the microphone assembly and the airflow.

[0026] According to a second aspect of the invention, an adapter for installation with a resuscitation assembly is provided. The adapter includes a mask interface and an opposing interface conforming to the ISO 5356 standard for patient ventilation devices. The adapter also includes a body having a through-channel, a pickup nozzle, and a pickup channel extending from the pickup nozzle to an acoustic interface configured for connection to an acoustic waveguide and / or microphone assembly.

[0027] The pickup nozzle is advantageously positioned in the through channel, or at least in fluid communication with the airflow flowing through the through channel.

[0028] The adapter may also include a disturbance arrangement configured to provide different sounds depending on the direction of airflow through the body.

[0029] By picking up sound with a microphone and providing an output based on the sensed sound using a processing unit, signal processing of the information in the sound is achieved. In doing so, one can, for example, use a recovery component to adapt the played-back sound to the operator, record sound for later use / research, and use signal processing (such as artificial intelligence and computer learning) to interpret the sound.

[0030] Recordings of different ventilation sounds can be used in debriefing situations, where operators are trained to differentiate between the different sounds in order to improve their ventilation techniques accordingly. The recordings can also be used for machine learning, which aims to enable computers to analyze ventilation in real time and provide operators with feedback and suggestions on how to adjust ventilation techniques to improve patient lung ventilation. Attached Figure Description

[0031] While various aspects of the invention have been discussed in general terms above, more detailed examples of embodiments will be given below with reference to the accompanying drawings, in which... Figure 1 A possible scenario is described in which an operator uses the resuscitation component according to the invention on a patient; Figure 2 This is a schematic cross-sectional side view of the resuscitation assembly according to the present invention; Figure 3 This is an enlarged perspective view of a part of the recovery components; Figure 4 This is a schematic perspective view of the microphone assembly; Figure 5 This is another schematic cross-sectional view of a resuscitation assembly according to the present invention, the resuscitation assembly including an adapter; Figure 6 yes Figure 5 A separate schematic diagram of the adapter is shown in the image; Figure 7 Another embodiment including an adapter is described; Figure 8 Another embodiment without an adapter is shown; Figures 9 to 11 Graphical illustrations depicting recorded sound signals representing different ventilation scenarios; and Figure 12 This is a schematic diagram of the interface between the microphone, processing unit, speaker, and display unit. Detailed Implementation

[0032] Figure 1 The resuscitation process is depicted in the image, involving patient 1 (a newborn infant in this example) and operator 3 using the resuscitation component 5 according to the invention. Figure 2 The diagram is shown in a schematic cross-sectional view.

[0033] The resuscitation assembly 5 includes a resuscitator bag 11, a patient mask 13, and an intermediate portion 15. In the illustrated embodiment, the intermediate portion 15 is disposed between and connected to the resuscitator bag 11 and the patient mask 13.

[0034] The intermediate portion 15 has a valve assembly 16. The valve assembly 16 has a valve for distributing airflow. Such a valve assembly 16 is known to those skilled in the art and will not be discussed in more detail here.

[0035] The middle portion 15 has an exhalation outlet 17 for the exhalation airflow.

[0036] The exhalation outlet 17 includes one or more outlet ports 17a through which exhaled air leaves the resuscitation assembly 5.

[0037] like Figure 2 As shown, the expiratory outlet 17 may also include a PEEP valve 18 (PEEP – positive end-expiratory pressure).

[0038] In this embodiment, the resuscitation component 5 also includes an acoustic waveguide 19. The acoustic waveguide 19 may be in the form of a hollow flexible tube.

[0039] Acoustic waveguide 19 is attached to exhalation outlet 17 in such a way that sound waves generated by the departing exhaled air enter acoustic waveguide 19. For example... Figure 1 As shown, the acoustic waveguide 19 is connected to the microphone assembly 21 at opposite ends. The microphone assembly 21 includes a microphone arranged to be associated with the ends of the acoustic waveguide 19, so that sound waves (i.e., sound) passing through the acoustic waveguide 19 can be recorded.

[0040] In some embodiments, the recorded sound waves (sound) may include sound waves generated by the PEEP valve 18.

[0041] Figure 3 This is a perspective view of a portion of the resuscitation assembly 5, depicting in more detail how the acoustic waveguide 19 connects to the exhalation outlet 17. This connection is made via connector 23, which connects to the opposing connection interface 25 of the exhalation outlet 17. Connector 23 may, for example, include threads (not shown) for connection to the connection interface 25, or may have a snap-fit ​​or quick-connect arrangement.

[0042] As those skilled in the art will understand, there is essentially no gas flow through the acoustic waveguide 19. Instead, it transmits sound only toward the microphone assembly 21 generated by the flow exiting the exhalation outlet 17. Therefore, the acoustic waveguide 19 provides a barrier between the microphone assembly 21 and the portion that comes into contact with the patient I and the operator 3. Thus, it is not necessary to clean or disinfect the microphone assembly 21 between uses by different patients 1.

[0043] Figure 4 An embodiment of microphone assembly 21 is depicted. It is connected to acoustic waveguide 19, which extends between microphone assembly 21 and exhalation outlet 17. In this embodiment, microphone assembly 21 includes a microphone 27 surrounded by a sound-isolating package 29. The sound-isolating package 29 removes most or almost all of the background noise. This allows microphone 27 to provide a more sensitive and better available signal for determining the correct use of resuscitation component 5.

[0044] The microphone cable 31, which is connected to the microphone 27, extends out of the package 29 for transmitting the recorded sound signal.

[0045] Figure 5 Another embodiment is depicted, in which the resuscitation component 5 includes an adapter 33. The adapter 33 is inserted between the patient mask 13 and the intermediate portion 15. Figure 6 The enlarged cross-sectional side view shows the adapter 33 in more detail.

[0046] The adapter 33 has a body 35, which is shaped as a conduit in the depicted embodiment. The body 35 has a mask interface 37 at one end, configured to connect to a patient mask 13. The body 35 has opposing interfaces 39 at opposite ends, configured to connect to an intermediate portion 15. Figure 5 The diagram shows how the adapter 33 connects to the patient mask 13 and the middle section 15.

[0047] Advantageously, the mask interface 37 and the opposite interface 39 meet the ISO 5356 standard for patient ventilation equipment.

[0048] The main body 35 has a through-channel 36 through which inflation and exhalation airflows can flow. Figure 6 The image is represented schematically by two arrows.

[0049] The adapter 33 also includes a pickup nozzle 41. The pickup nozzle 41 is disposed at the end of a pickup tube 43 extending through the wall of the body 35. The aperture of the pickup tube 43 includes a pickup channel 44 that guides sound waves from the pickup nozzle 41 to the acoustic interface 46. The pickup nozzle 41 is located within the airflow that will flow through the body 35 when the resuscitation assembly 5 is operated.

[0050] like Figure 5 and Figure 6 As shown, the pickup interface 46 is connected to the acoustic waveguide 19, as discussed previously. In other embodiments, the pickup interface 46 may be directly connected to the microphone assembly 21 (such as...). Figure 7 As shown in the image).

[0051] When inhaled and exhaled air is circulated through adapter 33, microphone 27 ( Figure 5 and Figure 6 (Not depicted in the text) will record the sounds of these streams.

[0052] To increase the difference in sound produced by the inhalation and exhalation airflows, a flow-differentiating interference arrangement 45 is arranged in the flow path. In this embodiment, the interference arrangement 45 is provided with an inclined shape of a pickup nozzle 41. In particular, the pickup nozzle 41 faces the exhalation airflow (and therefore faces the direction of the inhalation airflow). This produces a different sound, making the exhalation airflow sound different from the inhalation airflow.

[0053] In other embodiments, a dedicated interference arrangement 45 may be used, such as a baffle attached to the inner surface of the wall of the body 35.

[0054] Therefore, with Figure 2 and Figure 3 The embodiments shown are the opposite of those described above, by referring to Figure 5 and Figure 6 The discussed embodiment enables microphone 27 to record sound from both inspiratory and expiratory airflows. The advantage of this is that the system can be universally used in all types of ventilation devices, not just those that concentrate expiratory air through only one expiratory channel.

[0055] Figure 7 An alternative embodiment of adapter 33 is depicted. In this embodiment, instead of transmitting the picked-up sound to a remote microphone 27 at the end of the acoustic waveguide 19, adapter 33 itself includes a microphone assembly 21. Figure 7 In this illustration, a microphone assembly 21 is depicted attached to the body 35 and in contact with the outer end of the pickup tube 43.

[0056] Advantageously, microphone assembly 21 may be part of an arrangement including a battery, amplifier, and wireless communication unit (such as a Bluetooth unit), or it may itself include a battery, amplifier, and wireless communication unit. In this way, the recorded sound can be transmitted to an external device configured to analyze the recorded sound. This device may be wired, rather than using a wireless communication unit, such as... Figure 4 As shown.

[0057] use Figure 8 The embodiment illustrates a similar solution. This embodiment does not have the adapter 33 described above. Figure 8 The resuscitation assembly 5 shown has a microphone assembly 21 attached to the exhalation outlet 17 for recording the sound of the exhalation flow. (Refer to the above...) Figure 7 The microphone component 21 discussed is similar. Figure 8The microphone assembly 21 shown may have a wireless communication unit for distributing the recorded sound.

[0058] Advantageously, Figure 8 The illustrated embodiment may also include a PEEP valve 18. In this embodiment, the PEEP valve 18 may be configured to generate sound waves (sound) that can be picked up (i.e., recorded) by the microphone assembly 21.

[0059] Figure 9 , Figure 10 and Figure 11 A visualization of ventilation sounds recorded on a neonatal simulator is presented, simulating common scenarios such as normal conditions, effective ventilation with an open airway, ventilation attempts with an obstructed airway, and poor mask sealing ventilation (i.e., significant air leakage between the ventilation mask and the patient's face). Location A indicates the inflation phase, while location B indicates the expiration phase.

[0060] The curve at position B shows the amount of exhaled air. Specifically, the curve indicates both the duration and flow rate of the exhalation.

[0061] For the first case, such as Figure 9 As shown, although some differences are visible between the two graphic representations of exhalation, a clearly identifiable shape exists. Figure 9 The representation of the recorded expiratory airflow sound depicted is an example of the correct use of the resuscitation device, in which a large amount of exhaled air is detected and the subsequent shape is comparable.

[0062] Figure 10 The recording depicts the situation where ventilation attempts are disrupted by an obstructed airway. As clearly visible at position B, almost no sound produced by the expiratory airflow is recorded.

[0063] When recovery component 5 is used incorrectly, Figure 11 The corresponding diagram shown visualizes the recorded expiratory airflow. Generally, this representation is a result of air leakage between the patient mask 13 and the patient 1, such that air is only filled into the patient mask 13 and leaks through the gap between the patient 1 and the patient mask 13, rather than being filled into the patient 1.

[0064] The operator 3 of the resuscitation component 5 may have difficulty detecting this error, and as a result, several inflation cycles may occur without actually inflating the patient 1.

[0065] However, the revival component 5 according to the invention can generate a recorded sound or a modified version thereof for the operator 3 to hear during the use of the revival component 5. Therefore, the risk of repeated erroneous inflation attempts is reduced.

[0066] To provide additional assistance to operator 3 of resuscitation component 5, instead of relying on their ability to correctly interpret ventilation sounds, digital signal processing and real-time sound analysis can be used to automatically assess ventilation quality. For example, such an assessment using artificial intelligence / machine learning components can then provide operator 3 with visual or audible suggestions on how to improve ventilation techniques for effective lung ventilation. Visual feedback can be provided on a screen displaying text, or preferably on a graphical / animated screen showing what improvements can be made.

[0067] Aural feedback can be suggestions such as “Remember to tilt the patient’s head back to open the airway” or “Make sure the mask covers the patient’s mouth and nose and check for any leaks between the mask and the patient’s face.”

[0068] Figure 12 A schematic diagram depicts a microphone 27, a display unit 49, a speaker 51, and a processing unit 53. The processing unit 53 is configured to receive and process the sound signals picked up by the microphone 27. This processing may simply involve playing the signals on the speaker 51. However, it may also include editing these signals so that the sound played on the speaker 51 is more easily recognized and understood by the operator 3.

[0069] In some embodiments, the processing unit 53 may also include the functions discussed above.

[0070] exist Figure 12 The diagram also schematically shows a display unit 49, through which the processing unit 53 can communicate with the operator 3.

[0071] Figure 12 The arrows shown (indicating communication between the processing unit 53 and the various components) can be wired or wireless, such as using Bluetooth communication.

[0072] Refer again Figure 1 The microphone assembly 21 may advantageously be part of the tablet computer 47. The tablet computer 47 may also include a display unit 49 and / or a speaker 51.

[0073] The aforementioned processing of the recorded sound can be performed by the processing unit of the tablet computer 47, or it can be performed at a remote processing unit that communicates with the tablet computer 47.

[0074] In embodiments where the recorded sound is played back via speaker 51, using a microphone assembly 21 including package 29 can be advantageous, thereby reducing or avoiding acoustic feedback. The microphone assembly 21 including package 29 can also be part of the tablet computer 47, such as... Figure 1 As shown in the image.

Claims

1. A resuscitation assembly (5) comprising a patient mask (13), a resuscitator bag (11), an intermediate portion (15) between the patient mask and the resuscitator bag, and an exhalation outlet (17). in, The recovery component (5) also includes - Microphone (27), the microphone (27) is acoustically connected to the airflow inside or outside the recovery assembly (5); - Processing unit (53), which is connected to the microphone (27); The processing unit (53) is configured to provide output based on the sound signal recorded by the microphone (27).

2. The recovery assembly (5) according to claim 1 further includes an acoustic waveguide (19) that forms at least a portion of the acoustic connection between the microphone (27) and the airflow.

3. The resuscitation component (5) according to claim 1, wherein, The microphone (27) and the processing unit (53) are directly attached to the intermediate part (15).

4. The resuscitation component (5) according to any one of the preceding claims, wherein, The intermediate portion (15) includes a valve assembly (16) and an adapter (33), wherein the adapter (33) is disposed between the valve assembly (16) and the patient mask (13), and wherein the adapter (33) includes - A mask interface (37) configured to attach against the patient mask (13); - A relative interface (39) configured to attach against the valve assembly (16); - A pickup nozzle (41) is acoustically connected to the microphone (27).

5. The resuscitation component (5) according to claim 4, wherein, The adapter (33) also includes an interference arrangement (45) configured to provide different sounds depending on the direction of the flow through the adapter (33).

6. The resuscitation component (5) according to any one of the preceding claims, comprising a microphone component (21), wherein, The microphone assembly includes the microphone (27) and a soundproof enclosure (29), the soundproof enclosure (29) including soundproof material.

7. The resuscitation assembly (5) according to any one of the preceding claims, wherein the resuscitation assembly includes an exhalation outlet (17) and a connection interface (25), the exhalation outlet including one or more outlet ports (17a), wherein the connection interface (25) forms an acoustic connection with the microphone (27).

8. The resuscitation component (5) according to any one of the preceding claims, wherein, The exhalation outlet (17) includes a positive end-expiratory pressure (PEEP) valve (18) configured to generate sound waves detectable by the microphone (27).

9. An adapter (33) for installation with a resuscitation component (5), the adapter (33) comprising: - A mask interface (37) and a corresponding interface (39), the mask interface (37) and the corresponding interface (39) conforming to the ISO 5356 standard for patient ventilation equipment; - Body (35), said body (35) having a through channel (36); - Pick-up nozzle (41); - Pickup channel (44), the pickup channel (44) extending from the pickup nozzle (41) to the acoustic interface (46), wherein, The acoustic interface is configured to connect to an acoustic waveguide (19) and / or a microphone assembly (21).

10. The adapter (33) according to claim 9, wherein, The adapter also includes an interference arrangement (45) configured to provide different sounds depending on the flow direction of the airflow flowing through the body (35).

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