A respiratory function detection device with better sampling effect

Abstract

The application discloses a respiratory function detection device with better sampling effect. The respiratory function detection device comprises a shell, an air inlet assembly, a collecting assembly and a control assembly. The air inlet assembly comprises a first air inlet pipe, a second air inlet pipe, a separation net and a blowing nozzle. The first air inlet pipe is connected with the second air inlet pipe. The separation net divides a gas flow channel into a front part and a rear part. The blowing nozzle is sleeved on the first air inlet pipe. The rear end of the first air inlet pipe is provided with a first air outlet. The front end of the second air inlet pipe is provided with a second air outlet. The rear side of the first air inlet pipe is provided with a first air guide pipeline. The first air guide pipeline is communicated with the gas flow channel and the first air outlet. The front side of the second air inlet pipe is provided with a second air guide pipeline. A plurality of second openings are arranged on the second air guide pipeline. The second air guide pipeline is communicated with the gas flow channel and the second air outlet. The collecting assembly is connected with the air inlet assembly. The control assembly is connected with the collecting assembly. Through the above arrangement, the sampling effect of the respiratory function detection device is better, and the measurement precision is higher.

Description

Technical Field

[0001] This invention relates to the field of lung function testing technology, and in particular to a respiratory function testing device with better sampling effect. Background Technology

[0002] A pulmonary function measuring instrument is a medical device used to assess and diagnose a patient's lung ventilation capacity. By measuring parameters such as the exhaled airflow, airflow velocity, and lung resistance, it determines the patient's lung health status, provides diagnostic information for clinicians, and can be used for disease screening, treatment effect evaluation, and rehabilitation training guidance.

[0003] Currently, most pulmonary function testing devices employ a design where a nozzle is connected to a sampling handle. The sampling components within the handle collect air pressure from both the inlet and outlet of the nozzle. However, this design lacks separate sampling pathways connecting the nozzle and handle to the inlet and outlet, compromising sealing. Furthermore, misalignment during nozzle assembly or loosening between the nozzle and handle during use significantly impacts sampling accuracy, reducing the reliability of the respiratory function test. Additionally, this design results in poor uniformity of the collected gas, and turbulence can also affect the results. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this invention is to provide a respiratory function detection device with better sampling effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A respiratory function testing device with improved sampling effect includes: a housing, an air intake assembly, a data acquisition assembly, and a control assembly; the housing has a hollow structure; the air intake assembly is installed at the front end of the housing and includes a first air intake pipe, a second air intake pipe, an isolation net, and a mouthpiece; the first air intake pipe is located in front of the second air intake pipe, connected to the second air intake pipe, and forms a gas flow channel inside; the first air intake pipe is at least partially located outside the housing, and the second air intake pipe is at least partially located inside the housing; the isolation net is located between the first and second air intake pipes, dividing the gas flow channel into a front and a rear section; the rear end of the mouthpiece is fitted onto the first air intake pipe; the rear end of the first air intake pipe has a first air outlet in a front-rear direction at its bottom; the first air outlet communicates with the front part of the gas flow channel; the front end of the second air intake pipe has a second air outlet in a front-rear direction at its bottom; the second air outlet... The air inlet is connected to the rear of the gas flow channel; the rear side of the first air inlet pipe is provided with an annular first air guide groove, which is fitted with the isolation net to form a first air guide pipeline; the first air guide groove is provided with several first openings; the first air guide pipeline is connected to the front of the gas flow channel through the first openings; the first air outlet is connected to the first air guide pipeline; the front side of the second air inlet pipe is provided with an annular second air guide groove, which is fitted with the isolation net to form a second air guide pipeline; the second air guide groove is provided with several second openings; the second air guide pipeline is connected to the rear of the gas flow channel through the second openings; the second air outlet is connected to the second air guide pipeline; the collection component includes a first collection tube and a second collection tube, the first collection tube is connected to the first air outlet; the second collection tube is connected to the second air outlet; the control component is located at the bottom of the housing and is connected to the collection component.

[0007] Furthermore, the respiratory function testing device also includes: an airflow duct and an oscillation assembly. The airflow duct is disposed inside the housing and connected to the second air inlet pipe. The oscillation assembly is disposed on the upper side of the airflow duct and connected to the control assembly, including an oscillation generator and a connecting pipe. The connecting pipe is connected to the airflow duct. The oscillation generator is mounted on the top of the connecting pipe.

[0008] Furthermore, an air outlet pipe is provided at the rear end of the housing, which is connected to the airflow pipe and the connecting pipe; a first filter screen for stabilizing the airflow is provided inside the air outlet pipe.

[0009] Furthermore, a heating element is provided at the bottom of the airflow duct near the second air inlet pipe; the heating element is connected to the control component and is used to heat the gas flow channel and the isolation mesh to a preset temperature.

[0010] Furthermore, an annular first seal is provided on the outer side of the first air guide groove; an annular second seal is provided on the outer side of the second air guide groove; the first seal and the second seal are respectively interference-fitted with the isolation net.

[0011] Furthermore, the sum of the lengths of the first air outlet and the first collection tube is basically the same as the sum of the lengths of the second air outlet and the second collection tube.

[0012] Furthermore, the nozzle is equipped with a second filter for stabilizing the airflow; the second filter is made of metal.

[0013] Furthermore, the bottom rear end of the first air intake pipe and the bottom front end of the second air intake pipe are provided with interlocking parts; the front end face of the housing is provided with a snap-fit ​​groove corresponding to the snap-fit ​​part, and the snap-fit ​​part is disposed in the snap-fit ​​groove; the first air outlet and the second air outlet extend in the snap-fit ​​part respectively.

[0014] Furthermore, the respiratory function testing device also includes a connecting component; the connecting component includes a first connecting member and a second connecting member arranged symmetrically on the left and right sides; the first connecting member is arc-shaped and has a semi-enclosed structure, and is fitted onto the left end of the connection between the first air intake pipe and the second air intake pipe; the second connecting member is arc-shaped and has a semi-enclosed structure, and is fitted onto the right end of the connection between the first air intake pipe and the second air intake pipe.

[0015] The aforementioned respiratory function testing device, which offers improved sampling performance, effectively enhances sampling sealing and detection accuracy by installing an isolation mesh between the first and second inlet pipes and establishing two independent sampling paths connecting the front and rear of the gas flow channel. This avoids inaccurate sampling caused by nozzle misalignment or loosening. Simultaneously, the double-layered air guide groove design achieves effective separation and flow stabilization of the incoming air, reducing the interference of gas turbulence on the sampling results and improving the accuracy and reliability of the respiratory function testing device. Furthermore, this design facilitates subsequent sealing of the two sampling paths, further enhancing sealing reliability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the respiratory function testing device provided according to the present invention;

[0017] Figure 2 This is a first right sectional view of the respiratory function testing device provided according to the present invention;

[0018] Figure 3 This is a second right sectional view of the respiratory function testing device provided according to the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the first air intake pipe provided according to the present invention;

[0020] Figure 5 This is a schematic diagram of the structure of the connection component provided according to the present invention;

[0021] Figure 6 This is a schematic diagram of the air intake assembly provided according to the present invention;

[0022] Figure 7 This is a schematic diagram of the structure of the unsealed respiratory function testing device provided by the present invention. Detailed Implementation

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present invention.

[0024] In addition, to clearly illustrate the technical solution of this application, the following are also defined: Figure 1 The top, bottom, front, back, left, and right sides are shown.

[0025] like Figures 1 to 3 As shown, this application provides a respiratory function testing device with better sampling effect. The respiratory function testing device includes: a housing 11, an air intake assembly 12, a data acquisition assembly 13, a control assembly 14, an airflow pipeline 15, and an oscillation assembly 16.

[0026] Specifically, the housing 11 is a hollow structure used to house other equipment of the respiratory function testing device.

[0027] An air intake assembly 12 is installed at the front end of the housing 11 and includes a first air intake pipe 121, a second air intake pipe 122, a mesh screen 123, and a nozzle 124. The first air intake pipe 121 is located in front of the second air intake pipe 122, connects to the second air intake pipe 122, and forms a gas flow channel inside it. The first air intake pipe 121 is at least partially located outside the housing 11, and the second air intake pipe 122 is at least partially located inside the housing 11. The mesh screen 123 is located between the first air intake pipe 121 and the second air intake pipe 122, dividing the gas flow channel into a front and a rear section. The rear end of the nozzle 124 is fitted onto the first air intake pipe 121. The rear end of the first air intake pipe 121 has a first air outlet 125 in a front-rear direction at its bottom, and the first air outlet 125 communicates with the front part of the gas flow channel. The front end of the second air intake pipe 122 has a second air outlet 126 in a front-rear direction at its bottom, and the second air outlet 126 communicates with the rear part of the gas flow channel.

[0028] The airflow pipe 15 is located inside the housing 11 and is connected to the second air inlet pipe 122 for transmitting gas.

[0029] The oscillation assembly 16 is disposed on the upper side of the airflow duct 15 and connected to the airflow duct 15. It includes an oscillation generator 161 and a connecting pipe 162. The connecting pipe 162 is connected to the airflow duct 15. The oscillation generator 161 is installed at the top of the connecting pipe 162 to cause the passing airflow to oscillate, thereby providing external stress. This allows the user to achieve the required airflow for testing simply by breathing normally when blowing into the mouthpiece 124, thus realizing lung function testing.

[0030] The acquisition component 13 includes a first acquisition tube 131 and a second acquisition tube 132. The first acquisition tube 131 is connected to a first air outlet 125. The second acquisition tube 132 is connected to a second air outlet 126. The control component 14 is located at the bottom inside the housing 11 and is connected to the acquisition component 13 and the oscillation component 16. The acquisition component 13 is used to acquire gas from the front and rear of the gas flow channel, and the control component 14 is used to detect the pressure of the acquired gas, thereby calculating the airflow rate and airflow changes of the person being tested during respiration, providing parameters for lung function testing results.

[0031] Through the above-described configuration, the respiratory function testing device can apply external stress during measurement, reducing the required airflow. Users only need to breathe steadily to achieve effective lung function measurement, solving the problem of measurement errors caused by insufficient airflow in children, the elderly, and patients with weak lung function in existing technologies. This design not only improves measurement accuracy but also enhances the device's applicability to a wider population, further meeting the needs of clinical lung function assessment and disease screening.

[0032] like Figure 3 and Figure 4 As shown, a first annular first air guide groove 1211 is provided on the rear side of the first air inlet pipe 121. The first air guide groove 1211 is in clearance fit with the isolation net 123 to form a first air guide pipe. The first air guide groove 1211 is provided with a plurality of first openings 1212, and the first air guide pipe is connected to the front part of the gas flow channel through the first openings 1212. The first air outlet 125 is connected to the first air guide pipe.

[0033] Furthermore, an annular second air guide groove 1221 is provided on the front side of the second air inlet pipe 122. The second air guide groove 1221 is fitted with the isolation net 123 with a clearance to form a second air guide pipe. Several second openings are provided on the second air guide groove 1221. The second air guide pipe is connected to the rear part of the gas flow channel through the second openings. The second air outlet 126 is connected to the second air guide pipe. Through the above arrangement, two independent collection paths are connected to the front and rear parts of the gas flow channel respectively, effectively improving the collection sealing and detection accuracy, and avoiding inaccurate collection problems caused by nozzle misalignment or loosening. At the same time, the double-layer air guide groove design achieves effective separation and flow stabilization of the incoming air, reducing the interference of gas turbulence on the collection results, and improving the detection accuracy and reliability of the respiratory function detection device.

[0034] An annular first seal 1213 is provided on the outer side of the first air guide groove 1211; an annular second seal 1222 is provided on the outer side of the second air guide groove 1221. The first seal 1213 and the second seal 1222 are respectively press-fitted with the isolation net 123. By adding the first seal 1213 and the second seal 1222, the sealing performance of the device is improved, effectively preventing gas leakage, thereby further improving the stability and accuracy of lung function testing. In addition, the sealing elements reduce airflow turbulence and improve airflow stability. Furthermore, the first seal 1213 and the second seal 1222 can be made of silicone material to improve sealing performance. Moreover, the size and shape of the seals can be adjusted according to the specific needs of the device to further optimize the sealing effect and airflow stability.

[0035] like Figure 3 As shown, a gas outlet pipe 17 is provided at the rear end of the housing 11. The gas outlet pipe 17 is connected to the airflow pipe 15 and the connecting pipe 162. The gas outlet pipe 17 is used to balance the air pressure in the airflow pipe 15, stabilize the gas flow, reduce the occurrence of turbulence, and thus improve the detection accuracy of the equipment. A first filter screen 171 is provided inside the gas outlet pipe 17. The first filter screen 171 can further stabilize the gas flow and improve the accuracy of detection.

[0036] A heating element 18 is provided at the bottom of the airflow duct 15, near the second air inlet pipe 122. The heating element 18 is connected to the control component 14 and is used to heat the gas flow channel and the isolation net 123 to a preset temperature, which is 37°C. This design prevents water vapor condensation in the air inlet component 12 and the airflow duct 15, ensuring the dryness of the detection gas and improving the service life of the equipment. Furthermore, the temperature control design of the heating element 18 ensures the adaptability of the respiratory function testing device in different environments.

[0037] The sum of the lengths of the first air outlet 125 and the first collection tube 131 is basically the same as the sum of the lengths of the second air outlet 126 and the second collection tube 132, so as to reduce the detection error caused by the difference in the length of the airflow path and ensure the accuracy of the detection data.

[0038] The air nozzle 124 is equipped with a second filter 1241, which is used to stabilize the airflow entering the first air intake pipe 121. The second filter 1241 is made of metal to improve durability and ease of cleaning.

[0039] A third filter 163 is provided between the oscillation generator 161 and the connecting pipe 162. The third filter 163 is used to stabilize the oscillating airflow to the connecting pipe 162 and avoid excessive airflow oscillation amplitude, which would cause turbulence in the airflow pipe 15 and affect the detection results of the respiratory function detection device.

[0040] The oscillation generator 161 can be configured as a horn, an oscillating diaphragm, or other structures, with its front end fixedly connected to the front inner wall of the housing 11 and its rear end fixedly connected to the rear inner wall of the housing 11 to improve the stability of the structure.

[0041] like Figure 3 and Figure 5 As shown, the rear bottom of the first air intake pipe 121 and the front bottom of the second air intake pipe 122 are provided with interlocking snap-fit ​​portions 127. The front face of the housing 11 is provided with a snap-fit ​​groove 111 corresponding to the snap-fit ​​portion 127, and the snap-fit ​​portion 127 is disposed in the snap-fit ​​groove 111. The cooperation between the snap-fit ​​portion 127 and the snap-fit ​​groove 111 ensures the stability of the connection between the air intake assembly 12 and the housing 11. The first air outlet 125 and the second air outlet 126 are respectively extended in the snap-fit ​​portion 127, making the overall structure of the device compact and easy to assemble.

[0042] like Figure 6 and Figure 7 As shown, the respiratory function testing device also includes a connecting assembly 19. The connecting assembly 19 includes a first connecting member 191 and a second connecting member 192 arranged symmetrically on the left and right sides. The first connecting member 191 is arc-shaped and has a semi-enclosed structure, fitted onto the left end of the connection between the first air intake pipe 121 and the second air intake pipe 122. The second connecting member 192 is arc-shaped and has a semi-enclosed structure, fitted onto the right end of the connection between the first air intake pipe 121 and the second air intake pipe 122. Through this arrangement, the first connecting member 191 and the second connecting member 192 respectively surround the connection between the first air intake pipe 121 and the second air intake pipe 122, forming a stable mechanical connection structure and enhancing the overall structural stability of the device. At the same time, it effectively reduces airflow leakage at the connection point, ensuring testing accuracy.

[0043] Furthermore, the first connector 191 has first protrusions 1911 on both the front and rear sides of its top. The second connector 192 has second protrusions 1921 on both the front and rear sides of its top. A connecting portion 128 is provided at the top of the connection between the first intake pipe 121 and the second intake pipe 122. The left side of the connecting portion 128 has a first groove 1281 corresponding to the first protrusion 191, and the right side has a second groove 1282 corresponding to the second protrusion 1921. The first protrusion 1911 engages with the first groove 1281; the second protrusion 1921 engages with the second groove 1282, preventing the intake assembly 12 from shaking and further enhancing the structural stability of the intake assembly 12.

[0044] Furthermore, the first connector 191 has a first grip portion 1912 on the front and rear sides of its bottom. The second connector 192 has a first grip portion 1922 on the front and rear sides of its bottom, so that the user can disassemble and replace the first connector 191 and the second connector 192.

[0045] like Figure 1 and Figure 7 As shown, the respiratory function testing device also includes a cover 112, which is annular. The housing 11 surrounding the air intake assembly 12 has several guide grooves 113 that are rotationally symmetrical about the axis of the air intake assembly 12. The cover 112 contains several guide blocks that mate with the guide grooves 113, allowing the cover 112 to be rotated and tightened onto the housing 11. The cover 112 restricts the movement of the air intake assembly 12 in the front-to-back direction, preventing the air intake assembly 12 from loosening and slipping out of the housing 11, thus improving the stability of the device structure.

[0046] The foregoing description of embodiments of the present invention, through which those skilled in the art are able to implement or use the present invention, will be readily apparent to those skilled in the art. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novelty disclosed herein.

Claims

1. A respiratory function testing device with improved sampling, characterized in that The application relates to a respiratory function detection device. The device comprises a shell (11), an air inlet assembly (12), a collection assembly (13) and a control assembly (14). The air inlet assembly (12) is arranged at the front end of the shell (11) and comprises a first air inlet pipe (121), a second air inlet pipe (122), a separation net (123) and a blowing nozzle (124). The first air inlet pipe (121) is arranged at the front side of the second air inlet pipe (122) and is connected with the second air inlet pipe (122) to form an air flow channel inside. The first air inlet pipe (121) is arranged at least partially outside the shell (11), and the second air inlet pipe (122) is arranged at least partially inside the shell (11).

2. The respiratory function testing device of claim 1, wherein The separation net (123) is arranged between the first air inlet pipe (121) and the second air inlet pipe (122) to separate the air flow channel into a front part and a rear part. The rear end of the blowing nozzle (124) is sleeved on the first air inlet pipe (121). The bottom of the rear end of the first air inlet pipe (121) is provided with a first air outlet (125) in the front-rear direction. The first air outlet (125) is communicated with the front part of the air flow channel. The bottom of the front end of the second air inlet pipe (122) is provided with a second air outlet (126) in the front-rear direction. The second air outlet (126) is communicated with the rear part of the air flow channel. The rear side of the first air inlet pipe (121) is provided with an annular first air guide groove (1211) which is gap-connected with the separation net (123) to form a first air guide pipeline. The first air guide groove (1211) is provided with a plurality of first openings (1212). The first air guide pipeline is communicated with the front part of the air flow channel through the first openings (1212). The first air outlet (125) is communicated with the first air guide pipeline. The front side of the second air inlet pipe (122) is provided with an annular second air guide groove (1221) which is gap-connected with the separation net (123) to form a second air guide pipeline. The second air guide groove (1221) is provided with a plurality of second openings. The second air guide pipeline is communicated with the rear part of the air flow channel through the second openings. The second air outlet (126) is communicated with the second air guide pipeline. The collection assembly (13) comprises a first collection pipe (131) and a second collection pipe (132). The first collection pipe (131) is connected with the first air outlet (125). The second collection pipe (132) is connected with the second air outlet (126). The control assembly (14) is arranged at the bottom of the shell (11) and is connected with the collection assembly (13). The respiratory function detection device further comprises an air flow pipeline (15) which is arranged in the shell (11) and is connected with the second air inlet pipe (122). An oscillation assembly (16) is arranged on the upper side of the air flow pipeline (15) and connected with the control assembly (14), and comprises an oscillation generating part (161) and a connecting pipe (162); the connecting pipe (162) is connected with the air flow pipeline (15); and the oscillation generating part (161) is arranged on the top of the connecting pipe (162).

3. The respiratory function testing device of claim 2, wherein the sampling effect is improved. The rear end of the shell (11) is provided with an air outlet pipe (17) connected with the air flow pipeline (15) and the connecting pipe (162); and the air outlet pipe (17) is provided with a first filter screen (171) for stabilizing air flow.

4. The respiratory function testing device of claim 2, wherein the sampling effect is improved. The bottom of the air flow pipeline (15) is provided with a heating part (18) near one end of the second air inlet pipe (122); the heating part (18) is connected with the control assembly (14) and used for heating the temperature of the air flow channel and the isolation net (123) to a preset temperature.

5. The respiratory function testing device of claim 1, wherein the sampling is performed in a manner that reduces the effect of the sampling on the respiratory function test. 5 The outer side of the first air guide groove (1211) is provided with an annular first sealing part (1213); the outer side of the second air guide groove (1221) is provided with an annular second sealing part (1222); and the first sealing part (1213) and the second sealing part (1222) are respectively in interference fit with the isolation net (123).

6. The respiratory function testing device of claim 1, wherein the sampling is performed in a manner that reduces the effect of the sampling on the respiratory function test. The sum of the length of the first air outlet (125) and the length of the first collection pipe (131) is substantially the same as the sum of the length of the second air outlet (126) and the length of the second collection pipe (132).

7. The respiratory function testing device of claim 1, wherein the sampling is performed in a manner that provides a better sampling of the respiratory function. The air blowing nozzle (124) is provided with a second filter screen (1241) for stabilizing flow; and the second filter screen (1241) is made of metal.

8. The respiratory function testing device of claim 1, wherein the sampling is more effective. The rear end bottom of the first air inlet pipe (121) and the front end bottom of the second air inlet pipe (122) are provided with a clamping part (127) connected with each other; the front end surface of the shell (11) is provided with a clamping groove (111) corresponding to the clamping part (127), the clamping part (127) is arranged in the clamping groove (111), and the first air outlet (125) and the second air outlet (126) respectively extend in the clamping part (127).

9. The respiratory function testing device of claim 1, wherein the sampling is more effective. The respiratory function detection device further comprises a connecting assembly (19); the connecting assembly (19) comprises first and second connecting parts (191 and 192) arranged symmetrically left and right; the first connecting part (191) is arc-shaped and has a half-enclosing structure, and is sleeved on the left end of the connection part between the first air inlet pipe (121) and the second air inlet pipe (122); and the second connecting part (192) is arc-shaped and has a half-enclosing structure, and is sleeved on the right end of the connection part between the first air inlet pipe (121) and the second air inlet pipe (122).

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