Simulated lung for respirator performance detection

Abstract

The utility model relates to the technical field of simulated lungs, in particular to a simulated lung for detecting the performance of a breathing machine, which comprises a shell part, a PLC (programmable logic controller) is arranged on one side of the shell part, an air bag is arranged in the shell part, the upper end of the air bag is connected with a butt joint end used for connecting the breathing machine, and a tightness adjusting device is arranged on the outer side of the air bag. The outer side of the air bag is limited through the tightness adjusting device to change the maximum inflation volume of the air bag, a mounting chamber is arranged at the lower end of the air bag, a humidifier and an air pump are arranged in the mounting chamber, and the humidifier and the air pump are communicated with the interior of the air bag through a connecting assembly. When the breathing machine performance detection device is used, the ventilation capacity of the air bag can be adjusted according to different scenes and different experiments, so that the use requirement is met, meanwhile, the air resistance adjusting piece is arranged, and the requirement for breathing machine performance detection in different states can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of simulated lungs, in particular to a simulated lung for detecting the performance of a ventilator. Background Art

[0002] In the field of ventilator performance testing, the simulated lung device is an important testing tool, and its performance and accuracy are crucial to the calibration and verification of the ventilator. Traditional simulated lung devices are usually composed of air bags, airways and connectors, and they test the performance of ventilators by simulating the breathing process of human lungs.

[0003] The existing simulated lungs have a complex structure and are difficult to operate, which is not conducive to the rapid use of the ventilator. The existing simulated lungs cannot adjust the tightness of the airbags during use and cannot meet the requirements of different ventilation volumes and pressures in different scenarios or experiments.

[0004] Therefore, a simulated lung for ventilator performance testing is needed to improve the above problems. Utility Model Content

[0005] The utility model aims to provide a simulated lung for ventilator performance testing to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A simulated lung for ventilator performance testing comprises an outer shell, a PLC controller is arranged on one side of the outer shell, an air bag is arranged inside the outer shell, the upper end of the air bag is connected to a docking end for connecting to a ventilator, a tightness adjusting device is arranged on the outer side of the air bag, and the maximum inflation volume of the air bag is changed by limiting the outer side of the air bag with the tightness adjusting device, an installation chamber is arranged at the lower end of the air bag, a humidifier and an air pump are arranged inside the installation chamber, and the humidifier and the air pump are connected to the inside of the air bag through a connecting component; an air resistance adjusting member is arranged on the outer side of the docking end to achieve different airway resistance settings.

[0008] As a preferred solution of the utility model, the tightness adjustment device includes a strap sleeved on the outside of the airbag, one side of the strap is open, and a plurality of elastic straps are arranged inside the strap, and the two ends of each elastic strap are connected by a connecting buckle.

[0009] As a preferred solution of the utility model, the air resistance adjustment member includes a ring sleeved on the outside of the butt end, annular grooves are provided on both sides of the interior of the ring, and the interiors of the annular grooves on both sides are provided with retaining rings, and one side of each retaining ring is rotatably connected with an adjusting bolt, and the adjusting bolt passes through the ring and is threadedly connected to the ring.

[0010] As a preferred solution of the utility model, the connecting assembly includes an electromagnetic three-way valve connected to the bottom of the airbag, and the two ends of the electromagnetic three-way valve are respectively fixedly connected with a first connecting pipe and a second connecting pipe, the first connecting pipe is connected to the output end of the air pump, and the second connecting pipe is connected to the output end of the humidifier.

[0011] As a preferred solution of the utility model, a first check valve is provided on the first connecting pipe, a second check valve is provided on the second connecting pipe, and a heating element is also provided on the second connecting pipe.

[0012] As a preferred solution of the utility model, the heating element is a heating sleeve sleeved on the second connecting pipe.

[0013] As a preferred solution of the utility model, a pressure sensor and a temperature and humidity sensor are respectively provided on both sides of the upper end of the shell, and the pressure sensor, temperature and humidity sensor, electromagnetic three-way valve, air pump and humidifier are electrically connected to the PLC controller.

[0014] As a preferred solution of the utility model, the outer shell portion includes a shell, the upper end of the shell is fixedly connected to a top plate, the lower end of the shell is fixedly connected to a base, and a flippable side door is provided on one side of the shell.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] When in use, the utility model can adjust the ventilation volume of the airbag according to different scenes and different experiments to meet the use requirements, and at the same time, an air resistance adjustment part is provided to meet the needs of ventilator performance testing under different conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a cross-sectional view of the utility model;

[0019] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle.

[0020] In the figure: base 1, shell 2, side door 3, PLC controller 4, top plate 5, docking end 6, collar 7, adjusting bolt 8, airbag 9, temperature and humidity sensor 10, pressure sensor 11, elastic belt 12, connecting buckle 13, sleeve belt 14, installation chamber 15, air pump 16, humidifier 17, first check valve 18, second check valve 19, electromagnetic three-way valve 20, heating sleeve 21, back ring 22, annular groove 23. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant. Several embodiments of the utility model are given. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] See also Figure 1-3 , the utility model provides a technical solution:

[0026] For example, please refer to Figure 1 , 2 And 3, a simulated lung for ventilator performance testing, including an outer shell part, a PLC controller 4 is arranged on one side of the outer shell part, an airbag 9 is arranged inside the outer shell part, the outer shell part includes a shell body 2, the upper end of the shell body 2 is fixedly connected to a top plate 5, the lower end of the shell body 2 is fixedly connected to a base 1, and a reversible side door 3 is arranged on one side of the shell body 2, the upper end of the airbag 9 is connected to a docking end 6 for connecting to a ventilator, a tightness adjusting device is arranged on the outer side of the airbag 9, and the maximum inflation volume of the airbag 9 is changed by limiting the outer side of the airbag 9 through the tightness adjusting device, and an installation chamber 15 is arranged at the lower end of the airbag 9, and a humidifier 17 and an air pump 16 are arranged inside the installation chamber 15, and the humidifier 17 and the air pump 16 are connected to the inside of the airbag 9 through a connecting component; an air resistance adjusting member is arranged on the outer side of the docking end 6 to achieve different airway resistance settings.

[0027] By setting the tightness adjustment device, the tightness is adjusted during use, so that the maximum inflation volume in the airbag 9 can be changed. By changing the inflation volume of the airbag 8, the lung ventilation state of different people or different diseases can be simulated, and the accuracy and reliability of the simulated lung can be improved. The humidifier 17 and the air pump 16 are used to adjust the inflation and internal humidity. The setting of the air resistance adjustment part can change the air intake resistance of the docking end 6 to achieve different airway resistance settings.

[0028] Please refer to Figure 1 , 2 And 3, the tightness adjustment device includes a strap 14 sleeved on the outside of the airbag 9, the strap 14 has an opening on one side, and a plurality of elastic straps 12 are arranged inside the strap 14, and the two ends of each elastic strap 12 are connected by a connecting buckle 13.

[0029] By tightening or loosening the elastic band 12 through the connection port 13, the outer side of the airbag 9 is tightened or loosened, and the inflation volume in the airbag 9 is changed to meet the detection requirements under different states.

[0030] Please refer to Figure 1 , 2 And 3, the air resistance adjustment member includes a ring 7 which is sleeved on the outside of the butt end 6, and annular grooves 23 are provided on both sides of the inner part of the ring 7, and a retaining ring 22 is provided inside the annular grooves 23 on both sides, and an adjusting bolt 8 is rotatably connected to one side of each retaining ring 22, and the adjusting bolt 8 passes through the ring 7 and is threadedly connected to the ring 7.

[0031] The adjusting bolt 8 is used to push the butt ring 22 , thereby causing the butt ring 22 to squeeze the side of the butt end 6 , thereby changing the airway resistance inside the butt end 6 .

[0032] The connecting component includes an electromagnetic three-way valve 20 connected to the bottom of the airbag 9, and the two ends of the electromagnetic three-way valve 20 are respectively fixedly connected with a first connecting pipe and a second connecting pipe, the first connecting pipe is connected to the output end of the air pump 16, and the second connecting pipe is connected to the output end of the humidifier 17. A first check valve 18 is arranged on the first connecting pipe, a second check valve 19 is arranged on the second connecting pipe, and a heating element is also arranged on the second connecting pipe, and the heating element is a heating sleeve 21 mounted on the second connecting pipe.

[0033] A pressure sensor 11 and a temperature and humidity sensor 10 are respectively arranged on both sides of the upper end of the shell. The pressure sensor 11, the temperature and humidity sensor 10, the electromagnetic three-way valve 20, the air pump 16 and the humidifier 17 are all electrically connected to the PLC controller 4.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A simulated lung for testing the performance of a ventilator, comprising an outer shell, a PLC controller (4) is arranged on one side of the outer shell, an air bag (9) is arranged inside the outer shell, and the upper end of the air bag (9) is connected to a docking end (6) for connecting to a ventilator, characterized in that: The outside of the airbag (9) is provided with a tightness adjustment device, and the outside of the airbag (9) is limited by the tightness adjustment device to change its maximum inflation volume. The lower end of the airbag (9) is provided with an installation chamber (15), and a humidifier (17) and an air pump (16) are respectively arranged inside the installation chamber (15). The humidifier (17) and the air pump (16) are connected to the inside of the airbag (9) through a connecting component. An air resistance adjusting member is arranged on the outer side of the butt end (6) to achieve different airway resistance settings.

2. The simulated lung for ventilator performance testing according to claim 1, characterized in that: The tightness adjustment device comprises a strap (14) sleeved on the outside of the airbag (9), one side of the strap (14) is open, a plurality of elastic straps (12) are arranged inside the strap (14), and the two ends of each elastic strap (12) are connected by a connecting buckle (13).

3. The simulated lung for ventilator performance testing according to claim 2, characterized in that: The air resistance adjustment member comprises a sleeve (7) sleeved on the outside of the butt end (6), annular grooves (23) are provided on both sides of the sleeve (7), and abutment rings (22) are provided inside the annular grooves (23) on both sides, and one side of each abutment ring (22) is rotatably connected to an adjustment bolt (8), and the adjustment bolt (8) passes through the sleeve (7) and is threadedly connected to the sleeve (7).

4. The simulated lung for ventilator performance testing according to any one of claims 1 to 3, characterized in that: The connection assembly comprises an electromagnetic three-way valve (20) connected to the bottom of the airbag (9), and the two ends of the electromagnetic three-way valve (20) are respectively fixedly connected to a first connecting pipe and a second connecting pipe, the first connecting pipe is connected to the output end of the air pump (16), and the second connecting pipe is connected to the output end of the humidifier (17).

5. The simulated lung for ventilator performance testing according to claim 4, characterized in that: The first connecting pipe is provided with a first check valve (18), the second connecting pipe is provided with a second check valve (19), and the second connecting pipe is also provided with a heating element.

6. The simulated lung for ventilator performance testing according to claim 5, characterized in that: The heating element is a heating sleeve (21) sleeved on the second connecting pipe.

7. The simulated lung for ventilator performance testing according to claim 6, characterized in that: A pressure sensor (11) and a temperature and humidity sensor (10) are respectively arranged on both sides of the upper end of the shell, and the pressure sensor (11), the temperature and humidity sensor (10), the electromagnetic three-way valve (20), the air pump (16) and the humidifier (17) are all electrically connected to the PLC controller (4).

8. The simulated lung for ventilator performance testing according to claim 7, characterized in that: The outer shell portion comprises a shell (2), the upper end of the shell (2) is fixedly connected to a top plate (5), the lower end of the shell (2) is fixedly connected to a base (1), and a reversible side door (3) is provided on one side of the shell (2).

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