Extrapulmonary thoracic cavity pressure monitoring device

Abstract

The utility model relates to an extrapulmonary thoracic cavity pressure monitoring device. The extrapulmonary thoracic cavity pressure monitoring device comprises a simulated thoracic cavity cover; the cavity cover is connected with the simulated chest cover to form a sealed cavity; the simulated lung is positioned in the sealed cavity and is communicated with the outside; the compliance air bag is located outside the sealing cavity and communicates with the sealing cavity; the pressure acquisition unit is configured to acquire the air pressure of the space, except the simulated lung, in the sealed cavity, so that the corresponding simulated lung and the corresponding compliance air bag can be configured according to the actual tidal volume of a monitored person during extrapulmonary thoracic cavity pressure monitoring, respiration simulation of the monitored person is realized in vitro, and the monitoring accuracy of the extrapulmonary thoracic cavity pressure is improved. The pressure in the thoracic cavity outside the lung of the patient can be monitored in vitro, so that the discomfort of the patient caused by thoracic cavity pressure monitoring is reduced, the influence of various factors such as the physiological level, the body shape and the age of the patient on the monitoring result in the monitoring process can be reduced, and the accuracy of the monitoring result is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to an extra-pulmonary thoracic pressure monitoring device. Background Art

[0002] At present, in clinical practice, the monitoring of the extra-pulmonary thoracic pressure of patients mostly adopts the methods of deep throat tubes and external thoracic patches. The former will cause great discomfort to patients due to long-term monitoring, and the latter will lead to inaccurate monitoring results due to indirect monitoring.

[0003] Therefore, there is an urgent need for an extra-pulmonary thoracic pressure monitoring scheme that can reduce the discomfort of patients and provide accurate monitoring results. Summary of the Utility Model

[0004] Embodiments of the utility model provide an extra-pulmonary thoracic pressure monitoring device to reduce the discomfort caused by thoracic pressure monitoring to patients and improve the accuracy of monitoring results.

[0005] To solve the above problems, embodiments of the utility model provide an extra-pulmonary thoracic pressure monitoring device, which includes: an analog thoracic cavity cover; a cavity cover, which is connected to the analog thoracic cavity cover to form a sealed cavity; an analog lung, which is located in the sealed cavity and communicates with the outside; a compliant airbag, which is located outside the sealed cavity and communicates with the sealed cavity; a pressure acquisition unit, which is configured to acquire the air pressure in the space in the sealed cavity except for the analog lung.

[0006] Wherein, the cavity cover is provided with a first through hole communicating with the sealed cavity, and the air inlet and outlet of the compliant airbag are hermetically connected to the first through hole.

[0007] Wherein, the extra-pulmonary thoracic pressure monitoring device further includes: a first joint, which is located outside the sealed cavity and installed on the cavity cover, and the air inlet and outlet of the compliant airbag are hermetically connected to the first through hole through the first joint, and the compliant airbag is detachably connected to the first joint.

[0008] Wherein, the cavity cover is provided with a second through hole communicating with the sealed cavity, and the air inlet and outlet of the analog lung are hermetically connected to the second through hole.

[0009] Wherein, the extra-pulmonary thoracic pressure monitoring device further includes: a second joint, which is located in the sealed cavity and installed on the cavity cover, and the air inlet and outlet of the analog lung are hermetically connected to the second through hole through the second joint, and the analog lung is detachably connected to the second joint.

[0010] Wherein, the extra-pulmonary thoracic pressure monitoring device further includes: a connection switch structure, which is connected to the cavity cover and the analog thoracic cavity cover, and has a connected state and a disconnected state, and the connection switch structure connects the cavity cover and the analog thoracic cavity cover in the connected state, and disconnects the connection between the cavity cover and the analog thoracic cavity cover in the disconnected state.

[0011] Among them, the connecting switch structure includes: a hoop, fixed at the opening edge of the simulated chest mask; a first tower buckle base, installed on the hoop; a second tower buckle base, installed at the edge of the cavity cover; a tower buckle assembly, including matching tower buckles and hooks, the tower buckles and hooks are respectively installed on the first tower buckle base and the second tower buckle base.

[0012] The pressure collection unit includes a pressure collection pipeline, which is installed on the cavity cover, one end of the pressure collection pipeline is located in the sealed cavity, and the other end of the pressure collection pipeline is located outside the sealed cavity.

[0013] Among them, the pressure collection pipeline includes a pressure collection hole, an air pressure balance sensing film and an air pressure collection port. The pressure collection hole is arranged on the end of the pressure collection pipeline located in the sealed cavity, the air pressure collection port is arranged on the end of the pressure collection pipeline located outside the sealed cavity, and the air pressure balance sensing film is arranged in the pressure collection pipeline to cut off the connection between the pressure collection hole and the air pressure collection port.

[0014] The utility model provides an extrapulmonary thoracic pressure monitoring device, which realizes extrapulmonary thoracic pressure monitoring in vitro by utilizing a simulated thoracic mask, a cavity cover, a simulated lung, a compliant airbag and a pressure collection unit, wherein the cavity cover is connected to the simulated thoracic mask to form a sealed cavity, the simulated lung is located in the sealed cavity and communicated with the outside, the compliant airbag is located outside the sealed cavity and communicated with the sealed cavity, and the pressure collection unit is configured to collect the air pressure of the space other than the simulated lung in the sealed cavity, so that when performing extrapulmonary thoracic pressure monitoring, the corresponding simulated lung and the compliant airbag can be configured according to the actual tidal volume of the monitored person to realize breathing simulation of the monitored person in vitro, and then the pressure in the patient's extrapulmonary thoracic cavity can be monitored in vitro, avoiding direct extrapulmonary thoracic pressure monitoring on the patient's body, thereby reducing the discomfort caused to the patient by thoracic pressure monitoring, and reducing the influence of various factors such as the patient's physiological level, body shape and age on the monitoring result during the monitoring process, thereby improving the accuracy of the monitoring result. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The technical solutions and other beneficial effects of the present invention will be made apparent by describing in detail the specific embodiments of the present invention in conjunction with the accompanying drawings.

[0016] Figure 1 It is a structural schematic diagram of an extrapulmonary thoracic pressure monitoring device provided by an embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the exploded structure of the extrapulmonary thoracic pressure monitoring device provided by an embodiment of the utility model;

[0018] Figure 3It is a structural schematic diagram of the cavity cover part obtained after the cavity cover of the extrapulmonary thoracic pressure monitoring device and the simulated thoracic cavity mask are separated according to an embodiment of the utility model;

[0019] Figure 4 yes Figure 1 A partial enlarged schematic diagram of the middle tower buckle assembly;

[0020] Figure 5 It is a structural schematic diagram of a pressure collection pipeline provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the embodiments of the utility model in conjunction with the accompanying drawings and embodiments. It is particularly pointed out that the following embodiments are only used to illustrate the embodiments of the utility model, but do not limit the scope of the embodiments of the utility model. Similarly, the following embodiments are only some embodiments of the embodiments of the utility model, not all embodiments. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the embodiments of the utility model.

[0022] When describing the structure of a component, when a layer or a region is referred to as being "on" or "above" another layer or another region, it may mean being directly above the other layer or another region, or having other layers or regions between it and the other layer or another region. Also, if the component is turned over, the layer or the region will be "under" or "below" the other layer or another region. In addition, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0023] In addition, the directional terms mentioned in the embodiments of the present invention, such as [up], [down], [front], [back], [left], [right], [inside], [outside], [side], etc., are only referenced to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the embodiments of the present invention, rather than to limit the embodiments of the present invention. In each of the drawings, units with similar structures are represented by the same figure numbers. For clarity, the various parts in the drawings are not drawn to scale. In addition, certain related parts may not be shown in the drawings.

[0024] Monitoring of inspiratory and expiratory pressure is a function currently possessed by most ventilators. However, with the rapid development of medicine and continuous efforts to overcome difficulties, the performance requirements for medical ventilators are constantly increasing. At present, in the monitoring of patient respiratory pressure, due to the difficulty of monitoring and the risk of infection to patients, the extrapulmonary chest pressure is rarely monitored, which is very unfavorable for the treatment of patients with symptoms such as difficulty in chest muscle contraction and intermittent blockage. Therefore, in order to improve the effective treatment rate of patients, real-time monitoring of extrapulmonary chest pressure is required.

[0025] At present, in clinical practice, the monitoring of the pleural cavity pressure of patients mostly adopts the methods of deep throat tubes and chest external patches. The former will cause great discomfort to patients under the premise requirements of long-term monitoring, and the latter belongs to indirect monitoring. The monitoring results are affected by various factors such as the physiological level, body type, and age of the patients, and the monitoring results are inaccurate. Therefore, there is an urgent need for an extra-pulmonary pleural pressure monitoring scheme that can reduce the discomfort of patients and has accurate monitoring results.

[0026] In view of the above problems, the embodiment of the present utility model provides an extra-pulmonary pleural pressure monitoring device, which realizes the extra-pulmonary pleural pressure monitoring outside the body by using a simulated thoracic cavity cover, a cavity cover, a simulated lung, a compliance airbag, and a pressure acquisition unit. Among them, the cavity cover is connected to the simulated thoracic cavity cover to form a sealed cavity. The simulated lung is located inside the sealed cavity and is connected to the outside. The compliance airbag is located outside the sealed cavity and is connected to the sealed cavity. The pressure acquisition unit is configured to collect the air pressure in the space inside the sealed cavity except for the simulated lung. Therefore, when performing extra-pulmonary pleural pressure monitoring, the corresponding simulated lung and compliance airbag can be configured according to the actual tidal volume of the monitored person, so as to simulate the breathing of the monitored person outside the body, and then the pressure inside the extra-pulmonary pleural cavity of the patient can be monitored outside the body, so as to reduce the discomfort caused by the pleural pressure monitoring to the patient, and can reduce the influence of various factors such as the physiological level, body type, and age of the patient during the monitoring process on the monitoring results, so as to improve the accuracy of the monitoring results.

[0027] Please refer to Figures 1 to 3 , Figure 1 which is a schematic structural diagram of the extra-pulmonary pleural pressure monitoring device provided by the embodiment of the present utility model, Figure 2 is an exploded structural diagram of the extra-pulmonary pleural pressure monitoring device provided by the embodiment of the present utility model, Figure 3 is a schematic structural diagram of the cavity cover part obtained by separating the cavity cover of the extra-pulmonary pleural pressure monitoring device from the simulated thoracic cavity cover provided by the embodiment of the present utility model. As Figures 1 to 3 shown, the extra-pulmonary pleural pressure monitoring device includes a simulated thoracic cavity cover 13, a cavity cover 6, a simulated lung 12, a compliance airbag 7, and a pressure acquisition unit 8. Among them, the cavity cover 6 is connected to the simulated thoracic cavity cover 13 to form a sealed cavity. The simulated lung 12 is located inside the sealed cavity and can be connected to the outside of the sealed cavity. The compliance airbag 7 is located outside the sealed cavity and can be connected to the space inside the sealed cavity except for the simulated lung. The pressure acquisition unit 8 can be configured to collect the air pressure in the space inside the sealed cavity except for the simulated lung 12.

[0028] Specifically, the simulated thoracic cavity cover 13 can be a hollow structure with one end open and one end closed, and the hollow structure can be cylindrical. Correspondingly, the cavity cover 6 can be hermetically connected to the opening of the simulated thoracic cavity cover 13 to make the simulated thoracic cavity cover 13 in a sealed state, forming the above-mentioned sealed cavity.

[0029] The simulated lung 12 can be a balloon or an airbag, capable of being connected to a ventilator outside the sealed cavity and capable of performing breathing movements within the sealed cavity. Among them, the breathing movements include inhaling gas and exhaling gas. And, the compliant airbag 7 can meet the compliance requirements of the simulated lung 12.

[0030] Specifically, when the simulated lung 12 inhales gas, the gas outside the sealed cavity enters the simulated lung 12, the volume of the simulated lung 12 increases, the air pressure in the space other than the simulated lung 12 within the sealed cavity increases, and the compliant airbag 7 will expand due to the increase in the air pressure outside the simulated lung 12 within the sealed cavity to simulate the phenomenon that the increase in the air pressure within the thoracic cavity caused by the inhalation of the human lungs leads to the expansion of the thoracic cavity; when the simulated lung 12 exhales gas, the gas within the simulated lung 12 is discharged to the outside of the sealed cavity, the volume of the simulated lung 12 decreases, the air pressure in the space other than the simulated lung 12 within the sealed cavity decreases, and the compliant airbag 7 will contract due to the decrease in the air pressure outside the simulated lung 12 within the sealed cavity to simulate the phenomenon that the decrease in the air pressure within the thoracic cavity caused by the exhalation of the human lungs leads to the contraction of the thoracic cavity. Thus, it can completely reproduce the change in the volume of the thoracic cavity outside the lungs during the breathing action of the human body and can realize the real-time monitoring of the pressure of the thoracic cavity outside the lungs of the patient in the general environment of in vitro monitoring and diagnosis technology.

[0031] In addition, during the process of the simulated lung 12 performing breathing movements within the sealed cavity, the pressure acquisition unit 8 can acquire the air pressure in the space other than the simulated lung 12 within the sealed cavity, and the volume of the compliant airbag 7 changes with the change in the air pressure in the space other than the simulated lung 12 within the sealed cavity, which can play a buffering role to avoid the influence of the sudden change in the air pressure in the space other than the simulated lung 12 within the sealed cavity on the air pressure acquisition process. Therefore, it can improve the reliability of the monitoring data.

[0032] In this embodiment, the compliant airbag 7 and the simulated lung 12 can be configured according to the actual tidal volume of the monitored person (that is, the object whose pressure of the thoracic cavity outside the lungs needs to be monitored) to realize the breathing simulation of the monitored person outside the body, and the measurement of the air pressure outside the simulated lung within the sealed cavity can be used to replace the measurement of the pressure of the thoracic cavity outside the lungs. Thus, it can monitor the pressure of the thoracic cavity outside the lungs outside the body to reduce the discomfort caused by the thoracic cavity pressure monitoring to the patient and can reduce the influence of various factors such as the patient's physiological level, body type, and age on the monitoring results during the monitoring process to improve the accuracy of the monitoring results.

[0033] In some embodiments, as Figures 1 to 3 shown, the cavity cover 6 can be provided with a first through hole communicating with the sealed cavity, and the air inlet and outlet of the compliant airbag 7 can be hermetically connected to the first through hole, so that the sealed cavity and the compliant airbag 7 can exchange gas through the first through hole and avoid the leakage of gas at the connection between the air inlet and outlet of the compliant airbag 7 and the first through hole, which may affect the accuracy of the monitoring results.

[0034] In some specific embodiments, such as Figures 1 to 3 shown, the above-mentioned extra-pulmonary thoracic pressure monitoring device may further include a first joint 14, which is located outside the sealed cavity and installed on the cavity cover 6. Moreover, the air inlet and outlet of the compliant airbag 7 can be hermetically connected to the first through-hole on the cavity cover 6 through the first joint 14, and the compliant airbag 7 and the first joint 14 can be detachably connected, so as to facilitate the disassembly and replacement of the compliant airbag 7.

[0035] Specifically, the first joint 14 can be installed and fixed on the outer surface of the cavity cover 6 by screws and has a through-hole. The opposite ends of the through-hole of the first joint 14 can be respectively communicated with and hermetically connected to the first through-hole on the cavity cover 6 and the air inlet and outlet of the compliant airbag 7, so as to realize the hermetic connection between the air inlet and outlet of the compliant airbag 7 and the first through-hole on the cavity cover 6.

[0036] Moreover, during specific implementation, the air inlet and outlet of the compliant airbag 7 can be sleeved outside the through-hole of the first joint 14, and the compliant airbag 7 can be detached from the first joint by an external force, or the compliant airbag 7 can be installed on the first joint 14 by an external force to realize the disassembly and replacement of the compliant airbag 7. A sealing ring 15 can be provided at the connection between the first joint 14 and the cavity cover 6, and the sealing ring 15 can seal the connection between the first joint 14 and the cavity cover 6 to ensure the sealing effect at the connection between the first joint 14 and the cavity cover 6.

[0037] In some embodiments, such as Figures 1 to 3 shown, a second through-hole communicating with the sealed cavity can be provided on the cavity cover 6, and the air inlet and outlet of the simulated lung 12 can be hermetically connected to the second through-hole, so that the simulated lung 12 in the sealed cavity can exchange gas with the outside of the sealed cavity through the second through-hole, and prevent gas from leaking at the connection between the air inlet and outlet of the simulated lung 12 and the second through-hole, which may affect the accuracy of the monitoring result.

[0038] In some specific embodiments, such as Figures 1 to 3 shown, the above-mentioned extra-pulmonary thoracic pressure monitoring device may further include a second joint 16, which is located inside the sealed cavity and installed on the cavity cover 6. Moreover, the air inlet and outlet of the simulated lung 12 can be hermetically connected to the second through-hole on the cavity cover 6 through the second joint 16, and the simulated lung 12 and the second joint 16 can be detachably connected, so as to facilitate the disassembly and replacement of the simulated lung 12 when the cavity cover 6 is separated from the simulated thoracic cover 13.

[0039] Specifically, the second joint 16 can be fixedly installed on the inner surface of the cavity cover 6 by screws and has a through-hole. The opposite ends of the through-hole of the second joint 16 can be respectively communicated and sealed with the second through-hole on the cavity cover 6 and the air inlet / outlet of the above-mentioned simulated lung 12, so as to realize the sealed connection between the air inlet / outlet of the above-mentioned simulated lung 12 and the first through-hole on the cavity cover 6.

[0040] Moreover, in specific implementation, the air inlet / outlet of the above-mentioned simulated lung 12 can be sleeved on the outside of the through-hole of the second joint 16, and the simulated lung 12 can be detached from the second joint 16 by an external force, or the simulated lung 12 can be installed on the second joint 16 by an external force to realize the disassembly and replacement of the simulated lung 12.

[0041] A sealing ring (not shown in the figure) can be provided at the connection between the second joint 16 and the cavity cover 6, and this sealing ring can seal the connection between the second joint 16 and the cavity cover 6 to ensure the sealing effect at the connection between the second joint 16 and the cavity cover 6.

[0042] In some embodiments, as Figures 1 to 3 shown, the above-mentioned extra-pulmonary thoracic pressure monitoring device can further include a third joint 9. The third joint 9 is located outside the sealed cavity and can be installed on the cavity cover 6. Specifically, the third joint 9 can be fixedly installed on the outer surface of the cavity cover 6 by screws and has a through-hole. One end of the through-hole of the third joint 9 can be communicated and sealed with the second through-hole on the cavity cover 6, and when using the above-mentioned extra-pulmonary thoracic pressure monitoring device to monitor the extra-pulmonary thoracic pressure, the breathing valve port of the ventilator can be communicated and sealed with the other end of the through-hole of the third joint 9, so as to introduce gas into the simulated lung 12 through the ventilator or discharge the gas in the simulated lung 12 through the ventilator, thereby realizing the breathing function of the simulated lung 12.

[0043] Moreover, in specific implementation, the breathing valve port of the above-mentioned ventilator can be sleeved on the outside of the through-hole of the third joint 9, and the breathing valve port of the ventilator can be detached from the third joint 9 by an external force, or the breathing valve port of the ventilator can be installed on the third joint 9 by an external force. Specifically, a sealing ring 11 can be provided at the connection between the third joint 9 and the cavity cover 6, and this sealing ring 11 can seal the connection between the third joint 9 and the cavity cover 6 to ensure the sealing effect at the connection between the third joint 9 and the cavity cover 6.

[0044] In some embodiments, as Figures 1 to 4As shown, the above-mentioned extra-pulmonary thoracic pressure monitoring device may further include a connection switch structure, which is connected not only to the cavity cover 6 but also to the simulated thoracic cavity cover 13. Specifically, the connection switch structure may have a connected state and a disconnected state. And, in the connected state, the connection switch structure can connect the cavity cover 6 and the simulated thoracic cavity cover 13 so as to use the above-mentioned extra-pulmonary thoracic pressure monitoring device to monitor the extra-pulmonary thoracic pressure. In the disconnected state, the connection switch structure can disconnect the connection between the cavity cover 6 and the simulated thoracic cavity cover 13 so that the user can separate the cavity cover 6 from the simulated thoracic cavity cover 13, and thus can disassemble and replace the simulated lung 12 when the cavity cover 6 is separated from the simulated thoracic cavity cover 13.

[0045] In some examples, a pressing portion may be provided on the above-mentioned connection switch structure, and the above-mentioned connection switch structure can be triggered to switch between the connected state and the disconnected state by pressing the pressing portion.

[0046] In some examples, in order to enhance the firmness of the connection between the cavity cover 6 and the simulated thoracic cavity cover 13, the number of the above-mentioned connection switch structures may be multiple, for example, two, and the multiple connection switch structures may be spaced along the opening edge of the above-mentioned simulated thoracic cavity cover 13, for example, evenly spaced along the opening edge of the above-mentioned simulated thoracic cavity cover 13.

[0047] In some specific embodiments, as Figures 1 to 4 shown, the above-mentioned connection switch structure may include a hoop 1, a first buckle base 2, a second buckle base 5 and a buckle assembly 4. And, in the above-mentioned embodiments where the number of the above-mentioned connection switch structures is multiple, the multiple connection switch structures may share the same hoop 1, and each connection switch structure among the multiple connection switch structures may correspond to an independent first buckle base 2, second buckle base 5 and buckle assembly 4.

[0048] Specifically, the hoop 1 can be fixed at the opening edge of the simulated thoracic cavity cover 13 and can be circular, or can include two semi-circular parts. The first buckle base 2 can be installed on the hoop 1, for example, fixed to the hoop 1 by screws. The second buckle base 5 can be installed at the edge of the cavity cover 6, for example, fixed to the edge of the cavity cover 6 by screws. And, the buckle assembly 4 can include a matching buckle and a hook, wherein the buckle and the hook can be respectively installed on the first buckle base 2 and the second buckle base 5. Specifically, the above-mentioned cavity cover 6 and the simulated thoracic cavity cover 13 can be connected by the mutual engagement of the hook and the buckle. The above-mentioned cavity cover 6 and the simulated thoracic cavity cover 13 can be separated by releasing the engagement of the hook and the buckle.

[0049] In some examples, as Figure 1 and Figure 2As shown, the bottom end of the hoop 1 can be firmly embedded in the open top end of the simulated chest cover 13, the top end of the hoop 1 can be located outside the opening of the simulated chest cover 13, and the first tower buckle base 2 can be installed on the outer surface of the top end of the hoop 1.

[0050] In some examples, such as Figure 1 and Figure 2 As shown, a sealing ring 3 may be provided at the connection between the simulated chest mask 13 and the cavity cover 6 , and the sealing ring 3 can seal the connection between the simulated chest mask 13 and the cavity cover 6 to ensure the sealing effect of the connection between the simulated chest mask 13 and the cavity cover 6 .

[0051] In some embodiments, Figures 1 to 3 As shown, the pressure collection unit 8 may include a pressure collection pipeline 8A, for example, the pressure collection pipeline 8A may be installed on the cavity cover 6, one end of the pressure collection pipeline 8A may be located in the sealed cavity, and the other end of the pressure collection pipeline 8A may be located outside the sealed cavity.

[0052] Specifically, the pressure collection pipeline 8A can be fastened to the cavity cover 6 through the fourth joint 10, wherein the fourth joint 10 can be a nylon waterproof joint. The pressure collection pipeline 8A can pass through the cavity cover 6 from the outside of the sealed cavity to the inside of the sealed cavity.

[0053] In some specific embodiments, Figure 5 As shown, the pressure collection pipeline 8A may include a pressure collection hole 81, an air pressure balance sensing film 82 and an air pressure collection port 83. The pressure collection hole 81 is provided on the end of the pressure collection pipeline 8A located inside the sealed cavity, the air pressure collection port 83 is provided on the end of the pressure collection pipeline 8A located outside the sealed cavity, and the air pressure balance sensing film 82 is provided in the pressure collection pipeline 8A and isolates the connection between the pressure collection hole 81 and the air pressure collection port 83.

[0054] The pressure sampling hole 81 is connected to the sealed cavity and can synchronize the air pressure change in the sealed cavity to the air pressure balance sensing film 82. In some examples, the number of the pressure sampling hole 81 can be one or more.

[0055] The air pressure collection port 83 can be connected to the pressure collection interface of the ventilator so that the pressure collection interface of the ventilator can collect the pressure inside the air pressure balance sensing film 82. The pressure inside the air pressure balance sensing film 82 is the same as the air pressure of the space in the sealed cavity except for the simulated lung 12. Therefore, it is possible to collect the air pressure of the space in the sealed cavity except for the simulated lung 12, thereby realizing the monitoring of the extrapulmonary chest pressure.

[0056] As can be seen from the above, the extra-pulmonary thoracic pressure monitoring device provided in this embodiment includes a simulated thoracic cavity cover, a cavity cover, a simulated lung, a compliance airbag, and a pressure acquisition unit. Among them, the cavity cover is connected to the simulated thoracic cavity cover to form a sealed cavity. The simulated lung is located in the sealed cavity and communicates with the outside. The compliance airbag is located outside the sealed cavity and communicates with the sealed cavity. The pressure acquisition unit is configured to acquire the air pressure in the space in the sealed cavity except for the simulated lung. Therefore, when monitoring the extra-pulmonary thoracic pressure, the corresponding simulated lung and compliance airbag can be configured according to the actual tidal volume of the monitored person, so as to simulate the respiration of the monitored person outside the body, and then the pressure in the extra-pulmonary thoracic cavity of the patient can be monitored outside the body, so as to reduce the discomfort caused by thoracic pressure monitoring to the patient, and can reduce the influence of various factors such as the physiological level, body shape, and age of the patient during the monitoring process on the monitoring result, so as to improve the accuracy of the monitoring result.

[0057] In some embodiments, as Figures 1 to 3 shown, the above-mentioned extra-pulmonary thoracic pressure monitoring device may further include a first joint 14. The first joint 14 is located outside the sealed cavity and is installed on the cavity cover 6. Moreover, the air inlet and outlet of the compliance airbag 7 and the first through hole on the cavity cover 6 can be hermetically connected through the first joint 14, and the compliance airbag 7 and the first joint 14 can be detachably connected, so as to facilitate the disassembly and replacement of the compliance airbag 7.

[0058] Specifically, the airtightness test of the sealed cavity may include: when the compliance airbag 7 is in a disassembled state, that is, after the compliance airbag 7 is detached from the first joint 14, the airtightness test instrument is connected and hermetically connected to the sealed cavity through the dedicated joint corresponding to the compliance airbag 7 (that is, the first joint 14), and then a certain pressure of gas is introduced into the sealed cavity by using the airtightness test instrument. After the reading of the air pressure in the sealed cavity by the airtightness test instrument is stable, the gas introduction is stopped. Then, observe whether the reading drops. If the reading basically does not change within 20 s (or the change value is within 3%), it means that the airtightness of the sealed cavity is good, the sealed cavity passes the airtightness test, and the assembly of the above-mentioned extra-pulmonary thoracic pressure monitoring device meets the requirements.

[0059] In some embodiments, as Figures 1 to 3 shown, the above-mentioned pressure acquisition unit 8 may include a pressure acquisition pipeline 8A. For example, it may be the pressure acquisition pipeline 8A. The pressure acquisition pipeline 8A can be installed on the cavity cover 6. One end of the pressure acquisition pipeline 8A can be located in the sealed cavity, and the other end of the pressure acquisition pipeline 8A can be located outside the sealed cavity. Specifically, as Figure 5As shown, the pressure collection pipeline 8A may include a pressure collection hole 81, an air pressure balance sensing film 82 and an air pressure collection port 83. The pressure collection hole 81 is provided on the end of the pressure collection pipeline 8A located in the sealed cavity, the air pressure collection port 83 is provided on the end of the pressure collection pipeline 8A located outside the sealed cavity, and the air pressure balance sensing film 82 is provided in the pressure collection pipeline 8A, and the connection between the pressure collection hole 81 and the air pressure collection port 83 is cut off. Among them, the pressure collection hole 81 is connected to the sealed cavity, and the air pressure change in the sealed cavity can be synchronized to the air pressure balance sensing film 82. The air pressure collection port 83 can be connected to the pressure collection interface of the ventilator, so that the pressure collection interface of the ventilator collects the pressure in the air pressure balance sensing film 82, and the pressure in the air pressure balance sensing film 82 is the same as the air pressure of the space in the sealed cavity except the simulated lung 12, so that the air pressure of the space in the sealed cavity except the simulated lung 12 can be collected, and the chest pressure outside the lung can be monitored in vitro.

[0060] Specifically, after the sealed cavity passes the air tightness test, the compliant airbag 7 can be installed on the first joint 14, and then for the pressure collection pipeline 8A, a certain amount of gas can be pumped into the pressure balance sensing film 82 from the air pressure collection port 83 using an air pump, so that the volume of the air pressure balance sensing film 82 reaches 60-70% of its maximum volume, and then the air inlet and outlet of the simulated lung 12 can be connected to the breathing valve port of the ventilator through the breathing catheter, and the air pressure collection port 83 of the air pressure collection pipeline 8A can be connected to the pressure collection interface of the ventilator, and then the simulated lung 12 can be controlled by the ventilator to perform breathing movements in the sealed cavity, and during the breathing movement of the simulated lung 12, the pressure collection unit 8 is used to collect the air pressure of the space outside the simulated lung 12 in the sealed cavity, thereby realizing the monitoring of the patient's chest pressure outside the lung in vitro.

[0061] As can be seen from the above, the extrapulmonary thoracic pressure monitoring device includes a simulated thoracic mask, a cavity cover, a simulated lung, a compliant airbag and a pressure collection unit, wherein the cavity cover is configured to be connected with the simulated thoracic mask to form a sealed cavity, the simulated lung is configured to perform breathing movements in the sealed cavity, the compliant airbag is configured to be connected with the sealed cavity, and the pressure collection unit is configured to collect the air pressure in the sealed cavity, which can reduce the discomfort caused to the monitored person by monitoring the thoracic pressure and improve the accuracy of the monitoring results.

[0062] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An extra-pulmonary thoracic pressure monitoring device, characterized in that, include: Simulated chest mask; A cavity cover connected to the simulated chest mask to form a sealed cavity; A simulated lung is located in the sealed cavity and communicated with the outside; a compliant airbag, located outside the sealed cavity and in communication with the sealed cavity; The pressure collection unit is configured to collect the air pressure of the space in the sealed cavity except the simulated lung.

2. The extrapleural thoracic pressure monitoring device according to claim 1, wherein, The cavity cover is provided with a first through hole communicating with the sealed cavity, and the air inlet and outlet of the compliant airbag are sealed and connected to the first through hole.

3. The extrapleural thoracic pressure monitoring device according to claim 2, characterized in that, The extrapulmonary thoracic pressure monitoring device further comprises: The first joint is located outside the sealed cavity and installed on the cavity cover. The air inlet and outlet of the compliant airbag are sealed and connected to the first via hole through the first joint, and the compliant airbag is detachably connected to the first joint.

4. The extrapleural thoracic pressure monitoring device according to claim 1, characterized in that, The cavity cover is provided with a second through hole communicating with the sealed cavity, and the air inlet and outlet of the simulated lung are sealedly connected to the second through hole.

5. The extrapleural thoracic pressure monitoring device according to claim 4, wherein The extrapulmonary thoracic pressure monitoring device further comprises: The second joint is located in the sealed cavity and installed on the cavity cover. The air inlet and outlet of the simulated lung are sealed and connected to the second through hole through the second joint, and the simulated lung is detachably connected to the second joint.

6. The extrapleural thoracic pressure monitoring device according to claim 5, wherein, The extrapulmonary thoracic pressure monitoring device further comprises: The third connector is located outside the sealed cavity and installed on the cavity cover. One end of the third connector is sealed and connected to the second through hole on the cavity cover, and the other end is sealed and connected to the breathing valve port of the ventilator.

7. The extrapleural thoracic pressure monitoring device according to claim 1, characterized in that, The extrapulmonary thoracic pressure monitoring device further comprises: A connection switch structure is connected to the cavity cover and the simulated chest mask and has a connection state and a disconnection state. The connection switch structure connects the cavity cover and the simulated chest mask in the connection state, and disconnects the connection between the cavity cover and the simulated chest mask in the disconnection state.

8. The extrapleural thoracic pressure monitoring device according to claim 7, wherein The connection switch structure comprises: A hoop fixed at the opening edge of the simulated chest mask; A first tower buckle base, mounted on the hoop; A second tower buckle base is installed at the edge of the cavity cover; The tower buckle assembly comprises a matching tower buckle and a hook, wherein the tower buckle and the hook are respectively mounted on the first tower buckle base and the second tower buckle base.

9. The extrapleural thoracic pressure monitoring device according to claim 1, wherein, The pressure collection unit comprises a pressure collection pipeline, which is installed on the cavity cover, one end of the pressure collection pipeline is located in the sealed cavity, and the other end of the pressure collection pipeline is located outside the sealed cavity.

10. The extrapleural thoracic pressure monitoring device according to claim 9, characterized in that, The pressure collection pipeline includes a pressure collection hole, an air pressure balance sensing film and an air pressure collection port. The pressure collection hole is arranged on the end of the pressure collection pipeline located inside the sealed cavity, and the air pressure collection port is arranged on the end of the pressure collection pipeline located outside the sealed cavity. The air pressure balance sensing film is arranged in the pressure collection pipeline and cuts off the connection between the pressure collection hole and the air pressure collection port.

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