CN117173977A - Active and passive integrated lung simulation device with continuously adjustable breathing parameters - Google Patents
Active and passive integrated lung simulation device with continuously adjustable breathing parameters Download PDFInfo
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- CN117173977A CN117173977A CN202311099968.XA CN202311099968A CN117173977A CN 117173977 A CN117173977 A CN 117173977A CN 202311099968 A CN202311099968 A CN 202311099968A CN 117173977 A CN117173977 A CN 117173977A
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- 210000004072 lung Anatomy 0.000 title claims abstract description 59
- 230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 19
- 238000004088 simulation Methods 0.000 title abstract description 7
- 238000006073 displacement reaction Methods 0.000 claims abstract description 26
- 230000000241 respiratory effect Effects 0.000 claims abstract description 21
- 230000006698 induction Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 230000033001 locomotion Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 11
- 230000033228 biological regulation Effects 0.000 abstract description 10
- 230000035565 breathing frequency Effects 0.000 abstract description 4
- 230000000737 periodic effect Effects 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000004202 respiratory function Effects 0.000 description 7
- 238000011156 evaluation Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 230000002269 spontaneous effect Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011981 development test Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004199 lung function Effects 0.000 description 1
- 238000010339 medical test Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000036391 respiratory frequency Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 208000023504 respiratory system disease Diseases 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The invention discloses an active and passive integrated lung simulation device with continuously adjustable breathing parameters, which comprises: the device comprises a base, two flow sensors, two flow proportional valves, two air bags, two pressure sensors, two linear motors, two displacement sensors and a controller. The two air bags are respectively driven by the two linear motors to generate periodic telescopic motion, so that the active and passive air inlet and exhaust functions of the left and right lungs of a human body are simulated. The breathing frequency can be adjusted by adjusting the movement frequency of the linear motor, and the pressure in the air bag can be accurately adjusted by matching the linear motor with the pressure sensor and the displacement sensor; the flow proportioning valve is matched with a flow sensor, so that the air flow entering and exiting the air bag can be accurately regulated; and through the regulation of pressure and flow, the continuous regulation of compliance and air resistance can be realized, and finally the continuous regulation of respiratory parameters in the whole respiratory process is realized.
Description
Technical Field
The invention relates to the technical field of medical test devices, in particular to an active and passive integrated lung simulation device with continuously adjustable breathing parameters.
Background
The breathing machine is an important device for treating respiratory diseases, and the development and the test of the breathing machine are not separated from a key instrument, namely the simulated lung. In addition, the simulated lung is also widely applied to lung function equipment test, ventilator ventilation effect evaluation and clinical medicine teaching and scientific research.
At present, a passive mode is adopted for simulating the lung at home and abroad, namely, only the passive respiratory function of a human body under no spontaneous respiratory consciousness can be simulated, but in the test process of medical equipment, the performance of the equipment under no spontaneous respiratory consciousness of the human body is tested, and more importantly, the matching condition of the medical equipment when the human body has a certain spontaneous respiratory function is required to be tested. In addition, the respiratory parameters of the human body (such as inhalation pressure, inhalation volume, respiratory frequency, compliance and air resistance) are frequently changed in the inhalation and exhalation processes, and the current passive simulated lung only has fixed compliance and air resistance, so that continuous adjustment of the respiratory parameters in the whole respiratory process cannot be realized. Therefore, the current passive and parameter-fixed simulated lung cannot accurately simulate the respiratory function of a human body, and has adverse effects on development test, effect evaluation and clinical teaching of respiratory-related medical equipment.
Therefore, how to provide an active and passive integrated lung simulator which can accurately simulate the respiratory function of a human body and is beneficial to development and test, effect evaluation and clinical teaching of respiratory parameters of respiratory-related medical equipment is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides an active and passive integrated lung simulator which can accurately simulate the respiratory function of a human body and is beneficial to development and test of respiratory related medical equipment, effect evaluation and clinical teaching.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
an active and passive integrated lung simulator with continuously adjustable respiratory parameters, comprising:
the device comprises a base, wherein a first air inlet and outlet channel and a second air inlet and outlet channel are respectively arranged in the base, one end of the first air inlet and outlet channel is connected with a first flow sensor, one end of the second air inlet and outlet channel is connected with a second flow sensor, and the first flow sensor and the second flow sensor are both connected with an air inlet and outlet pipe;
the first flow proportional valve is arranged at the top end of the base, and a valve port of the first flow proportional valve is communicated with the first air inlet and outlet channel;
the second flow proportional valve is arranged at the top end of the base, and a valve port of the second flow proportional valve is communicated with the second air inlet and outlet channel;
the simulated left lung air bag is characterized in that a lower bag opening of the simulated left lung air bag is communicated with the other end of the first air inlet and outlet channel, and a first pressure sensor is connected to the simulated left lung air bag;
the lower bag opening of the simulated right lung air bag is communicated with the other end of the second air inlet and outlet channel, and a second pressure sensor is connected to the simulated right lung air bag;
the bottom of the first linear motor is fixed at the top end of the base, a first sliding block on the first linear motor is fixedly connected with a first bracket, and the bottom end of the first bracket is fixedly connected with the top end of the simulated left lung air bag;
the bottom of the second linear motor is fixed at the top end of the base, a second sliding block on the second linear motor is fixedly connected with a second bracket, and the bottom end of the second bracket is fixedly connected with the top end of the simulated right lung air bag;
the bottom end of the first displacement sensor is fixed at the top end of the base, and the induction rod end of the first displacement sensor is fixed with the bottom end of the first bracket;
the bottom end of the second displacement sensor is fixed at the top end of the base, and the induction rod end of the second displacement sensor is fixed with the bottom end of the second bracket;
and the controller is arranged on the base and is electrically connected with the first flow sensor, the second flow sensor, the first flow proportional valve, the second flow proportional valve, the first pressure sensor, the second pressure sensor, the first linear motor, the second linear motor, the first displacement sensor and the second displacement sensor.
Compared with the prior art, the invention discloses an active and passive integrated lung simulation device with continuously adjustable breathing parameters, which drives two air bags to generate periodic telescopic motion respectively through two linear motors so as to simulate the active and passive air inlet and exhaust functions of the left and right lung of a human body. The breathing frequency can be adjusted by adjusting the movement frequency of the linear motor, and the pressure in the air bag can be accurately adjusted by matching the linear motor with the pressure sensor and the displacement sensor; the flow proportioning valve is matched with a flow sensor, so that the air flow entering and exiting the air bag can be accurately regulated; and through the regulation of pressure and flow, the continuous regulation of compliance and air resistance can be realized, and finally the continuous regulation of respiratory parameters in the whole respiratory process is realized. Therefore, the device can accurately simulate the respiratory function of a human body, and is beneficial to development and test, effect evaluation and clinical teaching of respiratory related medical equipment.
Further, the simulated left lung air bag and the simulated right lung air bag are air bags.
The beneficial effects of adopting above-mentioned technical scheme to produce are: the extensibility is good, and smooth extension and contraction can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an active-passive integrated lung simulator with continuously adjustable breathing parameters.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the embodiment of the invention discloses an active-passive integrated lung simulation device with continuously adjustable breathing parameters, which comprises:
the device comprises a base 1, wherein a first air inlet and outlet channel and a second air inlet and outlet channel are respectively arranged in the base 1, one end of the first air inlet and outlet channel is connected with a first flow sensor 2, one end of the second air inlet and outlet channel is connected with a second flow sensor 3, the first flow sensor 2 and the second flow sensor 3 are both connected with an air inlet and outlet pipe 4, and the air inlet and outlet pipe 4 can be connected with a pipeline of external test breathing equipment;
the first flow proportional valve 5 is arranged at the top end of the base 1, and a valve port of the first flow proportional valve 5 is communicated with the first air inlet and outlet channel;
the second flow proportional valve 6 is arranged at the top end of the base 1, and a valve port of the second flow proportional valve 6 is communicated with the second air inlet and outlet channel;
the simulated left lung air bag 7, the lower bag opening of the simulated left lung air bag 7 is communicated with the other end of the first air inlet and outlet channel, and the simulated left lung air bag 7 is connected with a first pressure sensor 8, so that the gas pressure in the simulated left lung air bag 7 can be measured in real time;
the simulated right lung air bag 9, the lower bag mouth of the simulated right lung air bag 9 is communicated with the other end of the second air inlet and outlet channel, the simulated right lung air bag 9 is connected with a second pressure sensor 10, and then the gas pressure in the simulated right lung air bag 9 can be measured in real time;
the bottom of the first linear motor 11 is fixed at the top end of the base 1, a first sliding block 111 on the first linear motor 11 is fixedly connected with a first bracket 12, the bottom end of the first bracket 12 is fixedly connected with the top end of the simulated left lung air bag 7, and the first sliding block 111 can drive the first bracket 12 to move together with the simulated left lung air bag 7 in the up-and-down movement process, so that the simulated left lung air bag 7 stretches;
the bottom of the second linear motor 13 is fixed at the top end of the base 1, a second sliding block 131 on the second linear motor 13 is fixedly connected with a second bracket 14, the bottom end of the second bracket 14 is fixedly connected with the top end of the simulated right lung air bag 9, and the second sliding block 131 can drive the second bracket 14 and the simulated right lung air bag 9 to move together in the up-and-down movement process, so that the simulated right lung air bag 9 stretches;
the bottom end of the first displacement sensor 15 is fixed at the top end of the base 1, and the sensing rod end of the first displacement sensor 15 is fixed with the bottom end of the first bracket 12, so that the movement displacement of the left lung air bag 7 can be measured and simulated along with the up-and-down movement of the first bracket 12;
the bottom end of the second displacement sensor 16 is fixed at the top end of the base 1, and the sensing rod end of the second displacement sensor 16 is fixed with the bottom end of the second bracket 14, so that the movement displacement of the simulated right lung air bag 9 can be measured along with the up-and-down movement of the second bracket 14;
the controller 17, the controller 17 is installed on the base 1, and all be connected with first flow sensor 2, second flow sensor 3, first flow proportional valve 5, second flow proportional valve 6, first pressure sensor 8, second pressure sensor 10, first linear motor 11, second linear motor 13, first displacement sensor 15, second displacement sensor 16 electricity.
Wherein, the left lung simulating air bag 7 and the right lung simulating air bag 9 are air bags.
The human respiratory mechanics parameters mainly comprise compliance and air resistance. The compliance is characterized by the following formula:
c is respiratory system compliance, unit ml/cmH2O, V is the volume of gas in and out of the human body, unit ml, p is intra-pulmonary pressure, and unit cmH2O.
The air resistance characterization mode is shown as follows:
r is air resistance, cm H2O/(L/s), q is air flow, L/s, Δp is pressure difference between inside and outside of lung, and cm H2O.
The volume V can be obtained by integrating the flow rate q as shown in the following equation.
V＝∫dq (3)
Active mode:
in the active mode, the active breathing function of the human body is simulated by actively controlling the expansion and contraction of the air bag. The controller sends control instructions to the first linear motor and the second linear motor, the first linear motor and the second linear motor respectively drive the first sliding block and the second sliding block to move up and down, and the first sliding block and the second sliding block further drive the first bracket, the second bracket, the simulated left lung air bag and the simulated right lung air bag to stretch out and draw back; the expansion and contraction of the air bag causes alternating positive and negative pressure changes in the air bag, so that alternating air inlet and air outlet are generated in the flow proportional valve, the flow sensor and the air inlet and outlet pipe, interaction is generated with equipment such as a breathing machine, and the like, so that the active breathing function of a human body is simulated.
In addition, in the air inlet and outlet processes, the controller can adjust the movement frequency of the linear motor according to the requirements on the setting of the breathing parameters, so as to adjust the breathing frequency; the controller can adjust the position of the sliding block in real time according to the measurement feedback values of the pressure sensor and the displacement sensor, so as to adjust the volume of the air bag, thereby adjusting the gas pressure in the air bag; the controller can adjust the opening of the flow proportional valve in real time according to the measurement feedback value of the flow sensor, so as to adjust the gas flow; according to formulas (1), (2) and (3), the pressure p and the flow q are adjusted, and thus the adjustment of C, R and V is achieved.
Passive mode:
in the passive mode, the air bag is supplied by the breathing machine and other devices through the air inlet and outlet pipe, the breathing frequency, the inspiration pressure and the inspiration volume are all set by the breathing machine, and only the compliance and the air resistance can be adjusted. Similar to the active mode, the controller adjusts the position of the sliding block in real time according to the measurement feedback values of the pressure sensor and the displacement sensor, and then adjusts the gas pressure in the air bag; the controller adjusts the opening of the flow proportional valve in real time according to the measurement feedback value of the flow sensor, so as to adjust the gas flow; finally, according to formulas (1) and (2), the adjustment of C and R is realized through the adjustment of the pressure p and the flow q.
Therefore, in the above embodiment, the linear motor, the displacement sensor and the pressure sensor cooperate to realize accurate adjustment of the gas pressure in the air bag. The flow proportioning valve and the flow sensor work cooperatively to realize accurate adjustment of the gas flow of the air bag. And through the regulation of pressure and flow, the continuous regulation of compliance and air resistance can be realized, and finally the continuous regulation of respiratory parameters in the whole respiratory process is realized.
Therefore, the active and passive integrated lung simulation device provided by the invention can realize active respiration and passive respiration functions; and can realize continuous regulation of respiratory parameters, and can accurately simulate the respiratory function of human body, thereby being beneficial to development and test, effect evaluation and clinical teaching of respiratory related medical equipment.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. An active and passive integrated lung simulator with continuously adjustable respiratory parameters, comprising:
the device comprises a base (1), wherein a first air inlet and outlet channel and a second air inlet and outlet channel are respectively arranged in the base (1), one end of the first air inlet and outlet channel is connected with a first flow sensor (2), one end of the second air inlet and outlet channel is connected with a second flow sensor (3), and both the first flow sensor (2) and the second flow sensor (3) are connected with an air inlet and outlet pipe (4);
the first flow proportional valve (5) is arranged at the top end of the base (1), and a valve port of the first flow proportional valve (5) is communicated with the first air inlet and outlet channel;
the second flow proportional valve (6), the said second flow proportional valve (6) is set up in the top of the said base (1), the valve port of the said second flow proportional valve (6) communicates with said second air inlet and outlet channel;
the simulated left lung air bag (7), a lower bag opening of the simulated left lung air bag (7) is communicated with the other end of the first air inlet and outlet channel, and a first pressure sensor (8) is connected to the simulated left lung air bag (7);
the simulated right lung air bag (9), a lower bag opening of the simulated right lung air bag (9) is communicated with the other end of the second air inlet and outlet channel, and a second pressure sensor (10) is connected to the simulated right lung air bag (9);
the bottom of the first linear motor (11) is fixed at the top end of the base (1), a first sliding block (111) on the first linear motor is fixedly connected with a first bracket (12), and the bottom end of the first bracket (12) is fixedly connected with the top end of the simulated left lung air bag (7);
the bottom of the second linear motor (13) is fixed at the top end of the base (1), a second sliding block (131) on the second linear motor is fixedly connected with a second bracket (14), and the bottom end of the second bracket (14) is fixedly connected with the top end of the simulated right lung air bag (9);
the bottom end of the first displacement sensor (15) is fixed at the top end of the base (1), and the induction rod end of the first displacement sensor (15) is fixed with the bottom end of the first bracket (12);
the bottom end of the second displacement sensor (16) is fixed at the top end of the base (1), and the induction rod end of the second displacement sensor (16) is fixed with the bottom end of the second bracket (14);
the controller (17), the controller (17) is installed on base (1), and all with first flow sensor (2), second flow sensor (3), first flow proportional valve (5), second flow proportional valve (6) first pressure sensor (8), second pressure sensor (10), first linear motor (11), second linear motor (13), first displacement sensor (15), second displacement sensor (16) electricity is connected.
2. An active and passive integrated lung simulator with continuously adjustable breathing parameters according to claim 1, characterized in that the left and right lung simulative airbags (7, 9) are airbags.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311099968.XA CN117173977A (en) | 2023-08-29 | 2023-08-29 | Active and passive integrated lung simulation device with continuously adjustable breathing parameters |
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| CN202311099968.XA CN117173977A (en) | 2023-08-29 | 2023-08-29 | Active and passive integrated lung simulation device with continuously adjustable breathing parameters |
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| CN117173977A true CN117173977A (en) | 2023-12-05 |
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| CN202311099968.XA Pending CN117173977A (en) | 2023-08-29 | 2023-08-29 | Active and passive integrated lung simulation device with continuously adjustable breathing parameters |
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