A spirometer automatic calibrator for a lung function instrument

Abstract

The application discloses a spirometer automatic calibrator of a lung function instrument, and belongs to the technical field of lung function determination, which comprises a multi-shaft support, an automatic calibration, a support assembly and a mobile PC platform, the automatic calibration assembly is assembled in the multi-shaft support assembly, the multi-shaft support assembly is assembled in the support assembly, the support assembly can be installed on any plane main body in a working environment, the multi-shaft support assembly can be adjusted in any posture, and the automatic calibration assembly is controlled by the mobile PC platform to perform lung volume calibration work on the lung function instrument; through cooperation of various assemblies, accurate calibration docking and electric control automatic calibration are realized, problems of unstable flow rate and poor precision in traditional manual calibration are solved, calibration efficiency and reliability are improved, and the device has high adaptability and practicability.

Description

[0001] Lung function testing technology

[0002] This invention relates to the field of pulmonary function testing technology, and in particular to an automatic calibrator for a pulmonary function instrument. Background Technology

[0003] With the development of computer technology and the deepening understanding of pulmonary function assessment in clinical practice, pulmonary function testing has become an important method for the diagnosis of lung diseases. Therefore, the application of pulmonary function testing instruments is becoming increasingly widespread. To meet the quality control requirements of pulmonary function testing instruments, routine calibration and standardization of their indicators are a basic requirement of pulmonary function testing guidelines.

[0004] The calibration cylinders currently used in hospitals to calibrate pulmonary function instruments typically simulate human exhalation and inhalation by manually pushing a piston back and forth.

[0005] The shortcomings of existing automatic calibrators for spirometers in pulmonary function testing:

[0006] (1) In actual use, the piston may not move properly due to manual operation by medical personnel, resulting in inaccurate calibration volume.

[0007] (2) The speed of manually pushing the piston is uncontrollable, and the calibration flow rate and flow rate cannot be determined. The flow rate is unstable and discontinuous, resulting in unsatisfactory calibration effect and poor accuracy.

[0008] (3) Manual calibration requires the user to control the speed steadily, which is difficult to operate and requires a long training period. Summary of the Invention

[0009] The present invention aims to provide an automatic calibrator for a spirometer of a pulmonary function instrument to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, the present invention provides the following technical solution:

[0011] An automatic calibrator for a spirometer of a pulmonary function instrument, comprising a multi-axis support assembly, an automatic calibration assembly, a support assembly, and a mobile PC platform;

[0012] The automatic calibration component is assembled on the multi-axis support component, the multi-axis support component is assembled on the support component, the support component can be installed on any planar body in the working environment, the multi-axis support component can be adjusted in any posture, and the automatic calibration component is controlled by a mobile PC platform to perform lung volume calibration of the pulmonary function instrument.

[0013] Preferably, the multi-axis support assembly consists of a base rotation axis, a lower arm pitch axis, an upper arm pitch axis, a wrist rotation axis, and a self-locking rotation axis, wherein the base rotation axis, lower arm pitch axis, upper arm pitch axis, and wrist rotation axis are sequentially connected via the self-locking rotation axis;

[0014] The structure consists of a base body, a connecting rod, and a first hinge joint. The connecting rod is fixedly installed at the bottom of the base body for connecting to the support assembly. The first hinge joint is connected to the base body via a self-locking pivot, and is also connected to the lower arm pitch axis via a self-locking pivot.

[0015] One end of the lower arm pitch axis is connected to the first hinge joint of the base rotation axis via a self-locking pivot, and the other end is also connected to the upper arm pitch axis via a self-locking pivot.

[0016] The upper arm pitch axis is mainly composed of a second hinge joint, which has the same structure and function as the first hinge joint. One end is connected to the lower arm pitch axis via a self-locking rotating shaft, and the other end is connected to the wrist rotation axis via a self-locking rotating shaft.

[0017] The wrist rotation axis consists of a wrist rotation body and a docking platform. The bottom of the wrist rotation body is docked to the second hinge joint via a self-locking rotating shaft. The docking platform is fixedly assembled to the top of the wrist rotation body for assembling the automatic calibration component.

[0018] The self-locking pivot consists of a stop ring and a stop tenon. The stop ring and the stop tenon are respectively located at the joints of the base rotation axis, the lower arm pitch axis, the upper arm pitch axis, and the wrist rotation axis. The inner ring of the stop ring has several flanges arranged in a circumferential array. The stop tenon is in the shape of an "I" and has stop round heads at its four ends. The self-locking function is achieved by the engagement of the stop round heads and the several flanges.

[0019] Preferably, the support assembly consists of a support body, a locking screw, and a vacuum adsorption assembly. The support body has a docking hole through which the connecting rod of the multi-axis bracket assembly is assembled. The support body has a locking threaded hole located in the middle of the docking hole, and the locking screw is assembled in the locking threaded hole. After the connecting rod is assembled in the docking hole, the multi-axis bracket assembly can be further secured by tightening the locking screw.

[0020] Preferably, the vacuum adsorption assembly consists of a vacuum pump and an adsorption head, with the vacuum pump fixedly mounted on the side of the support assembly and the adsorption head mounted on the working end of the vacuum pump.

[0021] Preferably, the connecting rod of the multi-axis bracket assembly and the connecting hole of the support assembly are respectively provided with a matching connecting boss and a connecting groove. The cooperation of the connecting boss and the connecting groove provides the support assembly with an additional circumferential restraining force during the support operation of the multi-axis bracket assembly.

[0022] Preferably, the adsorption head of the vacuum adsorption assembly has a dual structure, with the adsorption end of the adsorption head divided into an outer edge and an inner edge.

[0023] Preferably, the automatic calibration assembly comprises a calibration platform, a calibration cylinder body, a volume adjusting piston, a push-pull cylinder, an active piston, a push-pull assembly, a telescopic hose, and a calibration connector. The calibration platform is mounted on the docking platform of the multi-axis support assembly. The calibration cylinder body is fixedly mounted in the middle of the calibration platform. The push-pull cylinder is mounted at one end of the calibration platform near the rear end of the calibration cylinder body. One end of the volume adjusting piston is mounted inside the calibration cylinder body, and the other end is connected to the working end of the push-pull cylinder. The active piston is mounted on the calibration cylinder body at the end away from the volume adjusting piston. The push-pull assembly is mounted in the middle of the calibration platform. The working part of the push-pull assembly is connected to the active piston. The push-pull assembly can drive the active piston to perform active reciprocating linear motion relative to the calibration cylinder body. An air delivery channel is provided in the middle of the active piston. One end of the telescopic hose is connected to the end of the active piston away from the calibration cylinder body and is connected to the air delivery channel. The calibration connector is fixedly mounted on the end of the telescopic hose away from the active piston. The calibration connector can be connected to the pulmonary function instrument to be tested.

[0024] Preferably, the push-pull assembly includes a push-pull slider, a push-pull groove, a lead screw, and a push-pull motor. The lead screw is assembled in the push-pull groove, the push-pull motor is assembled at one end of the push-pull groove, the output end of the push-pull motor is connected to the lead screw, the push-pull slider has a threaded hole and is assembled on the lead screw through the threaded hole, and the upper end of the push-pull slider is fixedly assembled to the active piston.

[0025] Preferably, the automatic calibration component has a capacity adjustment function.

[0026] Preferably, the mobile PC platform has a built-in linkage module. By connecting to the detection module of the pulmonary function instrument, the operation of the staff on the detection module of the pulmonary function instrument will be fed back to the linkage module of the PC platform. The linkage module controls the calibration device to automatically perform the corresponding work, thereby controlling it to drive the volume adjustment piston and the active piston to move at a constant speed.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] (1) The foundation support is solid and stable, and has strong adaptability.

[0029] The support assembly adopts a dual fixing method of vacuum adsorption and mechanical locking. The adsorption head has a dual structure, which can form a secondary adsorption on undulating surfaces to achieve firm adsorption. The boss and groove of the docking rod and the docking hole cooperate to form circumferential restriction. Combined with the fastening effect of the locking screw, it can stably fix the device on any plane such as the treatment table or desktop, avoid displacement during operation, and provide a reliable basic support for calibration.

[0030] (2) Multi-dimensional attitude adjustment, high docking accuracy

[0031] The multi-axis support assembly integrates a base rotation axis, a lower arm pitch axis, an upper arm pitch axis, and a wrist rotation axis, enabling multi-dimensional posture adjustment to ensure the automatic calibration component is precisely aligned with the lung function instrument to be calibrated. Each joint is equipped with a self-locking axis, which can achieve self-locking limit after adjustment to ensure stable working posture. At the same time, the coordinated work of the upper and lower arm pitch axes further expands the vertical working space and adapts to the docking requirements of different working positions.

[0032] (3) Wide range of capacity adjustment to meet diverse calibration requirements

[0033] The automatic calibration component has a capacity adjustment function of 1L to 5L. It controls the push-pull cylinder to drive the capacity adjustment piston through a mobile PC platform, which can accurately adjust the working capacity of the calibration cylinder body and adapt to the calibration capacity requirements of different pulmonary function instruments.

[0034] (4) Electrically controlled uniform speed operation improves calibration accuracy.

[0035] With a mobile PC platform as the control core, the operating parameters of the push-pull cylinder and push-pull motor can be precisely set, driving the volume adjustment piston and active piston to achieve uniform speed movement. This completely solves the problems of uncontrollable speed, unstable flow rate and discontinuity that exist in traditional manual piston pushing, and accurately controls the calibration flow rate and volume. At the same time, it avoids the situation of piston not moving in place and inaccurate calibration volume caused by manual operation, effectively improving the accuracy of lung volume calibration.

[0036] (5) Improve operational efficiency and reliability

[0037] The device is easy to install, fix, adjust, set capacity, and perform calibration and testing. The calibration process is completed automatically by the electronic control system, reducing errors caused by manual operation. Moreover, the disassembly and storage process after calibration is simple. Compared with the traditional manual calibration method, it greatly improves the efficiency of pulmonary function instrument calibration and testing, and enhances the reliability of calibration results.

[0038] (6) The components are designed to work together in a coordinated manner, resulting in strong overall practicality.

[0039] The multi-axis support assembly, automatic calibration assembly, support assembly, and mobile PC platform structure of the device work together to form a complete calibration system from foundation fixation and attitude adjustment to electronic control calibration. Each link ensures the stability and accuracy of the calibration work. Moreover, the overall structure design is reasonable, there are no complicated operation steps, the professional requirements for operators are low, and the device is highly practical and operable. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of an automatic calibrator for a spirometer in a pulmonary function instrument.

[0041] Figure 2 This is a structural schematic diagram of a multi-axis support assembly;

[0042] Figure 3 This is a schematic diagram of the internal structure of a multi-axis support assembly;

[0043] Figure 4 This is a schematic diagram of the structure of a self-locking shaft;

[0044] Figure 5 A schematic diagram of the supporting components;

[0045] Figure 6 This is a schematic diagram of the vacuum adsorption assembly.

[0046] Figure 7 This is a schematic diagram of the adsorption head structure;

[0047] Figure 8 This is a schematic diagram of the automatic calibration component;

[0048] Figure 9 This is a schematic diagram of the internal structure of the automatic calibration component;

[0049] Figure 10 This is a cross-sectional view of the active piston.

[0050] The reference numerals in the accompanying drawings include:

[0051] 1. Multi-axis support assembly; 101. Base rotation axis; 1011. Base body; 1012. Connecting rod; 1013. First hinge joint; 1014. Connecting groove; 102. Lower arm pitch axis; 103. Upper arm pitch axis; 104. Wrist rotation axis; 1041. Wrist rotation body; 1042. Connecting platform; 105. Self-locking shaft; 1051. Stop ring; 1502. Flange; 1503. Stop latch; 1054. Stop round head; 2. Support assembly; 201. Support body; 202. Locking screw; 203. Connecting hole; 204. Locking 205. Threaded hole; 206. Docking boss; 207. Vacuum adsorption assembly; 208. Vacuum pump; 209. Adsorption head; 2000. Outer edge; 2000. Inner edge; 2000. Automatic calibration assembly; 301. Calibration platform; 302. Calibration cylinder body; 303. Capacity adjustment piston; 304. Push-pull cylinder; 305. Active piston; 306. Gas supply channel; 307. Push-pull assembly; 308. Push-pull slider; 309. Push-pull groove; 310. Lead screw; 311. Push-pull motor; 312. Telescopic hose; 313. Calibration connector; 4. Mobile PC platform. Detailed Implementation

[0052] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0053] like Figure 1 As shown, the present invention provides an automatic calibrator for a spirometer of a pulmonary function instrument, which consists of a multi-axis support assembly 1, an automatic calibration assembly 3, a support assembly 2, and a mobile PC platform 4;

[0054] The automatic calibration component 3 is assembled on the multi-axis support component 1, and the multi-axis support component 2 is assembled on the support component 2. The support component 2 can be installed on any flat surface in the working environment (such as a treatment table, desktop, etc.) to form a reliable support. At the same time, the multi-axis support component 1 can be adjusted in any posture to further provide a stable support environment for the automatic calibration component 3. The automatic calibration component 3 is controlled by the mobile PC platform 4 to perform lung volume calibration of the pulmonary function instrument.

[0055] Specifically, such as Figures 2-4 As shown, the multi-axis support assembly 1 consists of a base rotation axis 101, a lower arm pitch axis 102, an upper arm pitch axis 103, a wrist rotation axis 104, and a self-locking rotation axis 105.

[0056] The main function of the base rotation shaft 101 is to bear the weight of the multi-axis support assembly 1, realize 360° rotation in the horizontal plane, and determine the working base azimuth angle. It consists of the base body 1011, the connecting rod 1012, and the first hinge joint 1013. The connecting rod 1012 is fixedly set at the bottom of the base body 1011 and is used to connect the support assembly 2 to realize the basic support of the entire multi-axis support assembly 1. The first hinge joint 1013 is connected to the base body 1011 through the self-locking rotating shaft 105. At the same time, the first hinge joint 1013 is connected to the lower arm pitch axis 102 through the self-locking rotating shaft 105. In this way, medical staff can rotate the first hinge joint 1013 to achieve 360° rotation in the horizontal plane and adjust the working base azimuth angle. At the same time, the self-locking rotating shaft 105 can ensure the stability after the angle is adjusted.

[0057] The main function of the lower arm pitch axis 102 is to swing back and forth relative to the base rotation axis 101 by 180° to achieve height adjustment in the vertical plane. One end of the lower arm pitch axis 102 is connected to the first hinge joint 1013 of the base rotation axis 101 through a self-locking rotating shaft 105, and the other end is connected to the upper arm pitch axis 103 through the same self-locking rotating shaft 105. In this way, after adjusting the working base azimuth angle of the base rotation axis 101, medical staff can manually adjust the lower arm pitch axis 102 to swing back and forth 180° relative to the base rotation axis 101 to achieve height adjustment in the vertical plane. Also, because of the existence of the self-locking rotating shaft 105, the self-locking rotating shaft 105 can ensure the stability after the working angle of the lower arm pitch axis 102 is adjusted.

[0058] The main function of the upper arm pitch axis 103 is to swing back and forth 180° relative to the lower arm pitch axis 102, thereby achieving height adjustment in the vertical plane. It works in conjunction with the lower arm pitch axis 102 to further expand the vertical working space. The main body of the upper arm pitch axis 103 is the second hinge joint, which has the same structure and function as the first hinge joint 1013. One end is connected to the lower arm pitch axis 102 through the self-locking rotating shaft 105, and the other end is connected to the wrist rotation axis 104 through the self-locking rotating shaft 105. In this way, medical staff can manually swing the upper arm pitch axis 103 back and forth 180° relative to the lower arm pitch axis 102, thereby achieving height adjustment in the vertical plane and further expanding the vertical working space. Also, because of the existence of the self-locking rotating shaft 105, after the working angle of the upper arm pitch axis 103 is adjusted, the self-locking rotating shaft 105 can ensure the stability after the angle is adjusted.

[0059] The main function of the wrist rotation axis 104 is to rotate 360° relative to the upper arm pitch axis 103, thereby achieving horizontal rotation of the wrist and adjusting the rotation direction of the wrist pitch axis and the docking end, providing a basis for subsequent work posture adjustment. It consists of a wrist rotation body 1041 and a docking platform 1042. The bottom of the wrist rotation body 1041 is docked to the second hinge joint via a self-locking pivot 105. The docking platform 1042 is fixedly mounted on the top of the wrist rotation body 1041 for mounting the automatic calibration component 3. In this way, medical personnel can manually adjust the wrist rotation body 1041 to rotate 360° relative to the upper arm pitch axis 103, thereby realizing the main function of the wrist rotation axis 104. Also, due to the presence of the self-locking pivot 105, after the working angle of the wrist rotation axis 104 is adjusted, the self-locking pivot 105 can ensure the stability after the angle adjustment.

[0060] The main function of the self-locking pivot 105 is to provide a self-locking limit function for each joint of the multi-axis support assembly 1 after the working angle is adjusted, so as to ensure the stability of each joint after the angle is adjusted. It consists of a stop ring 1051 and a stop latch 1503. The stop ring 1051 and the stop latch 1503 are respectively set at the docking points of the base rotation axis 101, the lower arm pitch axis 102, the upper arm pitch axis 103 and the wrist rotation axis 104. The inner ring of the stop ring 1051 has several flanges 1502 arranged circumferentially. The stop latch 1503 is "I" shaped and has a stop round head 1054 at the four ends. The self-locking function is realized by the engagement of the stop round head 1054 and several flanges 1502.

[0061] like Figures 5-7 As shown, the main function of the support component 2 is to provide fixed support for the entire multi-axis bracket assembly 1, and it also has a strong adsorption function, which facilitates the installation and placement of the entire device during use. It consists of a support body 201, a locking screw 202 and a vacuum adsorption component 206. The support body 201 is provided with a docking hole 203. The connecting rod of the multi-axis bracket assembly 1 is assembled through the docking hole 203 to realize the fixed support of the multi-axis bracket assembly 1. The support body 201 has a locking threaded hole 204 located in the middle of the docking hole 203. The locking screw 202 is assembled in the locking threaded hole 204. After the docking rod 1012 is assembled in the docking hole 203, the multi-axis bracket assembly 1 can be further tightened by tightening the locking screw 202 to ensure the stability of the support of the multi-axis bracket assembly 1 and further ensure the accuracy of subsequent calibration work.

[0062] The main function of the vacuum adsorption component 206 is to provide an adsorption force for the support component 2, allowing the support component 2 to be mounted on any flat surface in the working environment, providing a stable and solid basic working environment for the entire device. It consists of a vacuum pump 2061 and an adsorption head 2062. The vacuum pump 2061 is fixedly mounted on the side of the support component 2, and the adsorption head 2062 is mounted on the working end of the vacuum pump 2061. The adsorption head 2062 is attached to any flat surface in the working environment. When the vacuum pump 2061 is started, the adsorption head 2062 is firmly adsorbed onto the flat surface, thus realizing the main function of the vacuum adsorption component 206.

[0063] Furthermore, the connecting rod 1012 of the multi-axis support assembly 1 and the connecting hole 203 of the support assembly 2 are respectively provided with a mating boss 205 and a mating groove 1014. The mating boss 205 and the mating groove 1014 provide an additional circumferential restraining force for the support assembly 2 in supporting the multi-axis support assembly 1, thereby making the support work more robust and stable.

[0064] Furthermore, the adsorption head 2062 of the vacuum adsorption component 206 has a dual structure. The adsorption end of the adsorption head 2062 is divided into an outer edge 2063 and an inner edge 2064. After the vacuum pump 2061 is started, the outer edge 2063 will first adhere to the flat body. Even if the flat body has some undulations, a relatively sealed space can be formed. At this time, the vacuum pump 2061 continues to evacuate the adsorption head 2062. The inner edge 2064 will be adsorbed again in the initial sealed space formed by the outer edge 2063, so that the vacuum adsorption component 206 is adsorbed more firmly and stably, providing a solid and reliable basic working environment for the support component 2, and ensuring the stability and reliability of subsequent support work.

[0065] like Figures 8-10As shown, the automatic calibration component 3 is mainly used for the daily calibration and testing of the pulmonary function instrument, and also has a volume adjustment function of 1L~5L. It consists of a calibration platform 301, a calibration cylinder body 302, a volume adjustment piston 303, a push-pull cylinder 304, an active piston 305, a push-pull assembly 307, a telescopic hose 312, and a calibration connector 313. The calibration platform 301 is mounted on the docking platform 1042 of the multi-axis support assembly 1, and the calibration cylinder body 302 is fixedly mounted on the calibration platform 301. In the middle of 1, a push-pull cylinder 304 is mounted on one end of the calibration platform 301 near the rear end of the calibration cylinder body 302. One end of the capacity adjusting piston 303 is mounted inside the calibration cylinder body 302, and the other end is connected to the working end of the push-pull cylinder 304. By adjusting the position of the capacity adjusting piston 303 in the calibration cylinder body 302 through the push-pull cylinder 304, the working capacity of the calibration cylinder body 302 is adjusted. The active piston 305 is mounted on the calibration cylinder body 302 away from the capacity adjusting piston. At one end of the plug 303, a push-pull assembly 307 is mounted in the middle of the calibration platform 301. The working part of the push-pull assembly 307 is connected to the active piston 305. The push-pull assembly 307 can drive the active piston 305 to perform active reciprocating linear motion relative to the calibration cylinder body 302. A gas delivery channel 306 is provided in the middle of the active piston 305. When the active piston 305 performs active reciprocating linear motion relative to the calibration cylinder body 302, gas can enter and exit through the gas delivery channel 306. To achieve the same function as the traditional calibration tube, calibrating or testing the lung volume of the pulmonary function instrument, one end of the telescopic hose 312 is connected to the end of the active piston 305 away from the calibration tube body 302 and connected to the gas delivery channel 306. The calibration connector 313 is fixedly assembled to the end of the telescopic hose 312 away from the active piston 305. The calibration connector 313 can be connected to the pulmonary function instrument to be tested. At the same time, the push-pull cylinder 304 and the push-pull assembly 307 are both controlled by the mobile PC platform 4.

[0066] Furthermore, the push-pull assembly 307 includes a push-pull slider 308, a push-pull groove 309, a lead screw 310, and a push-pull motor 311. The lead screw 310 is installed in the push-pull groove 309, and the push-pull motor 311 is installed at one end of the push-pull groove 309. The output end of the push-pull motor 311 is connected to the lead screw 310. The push-pull slider 308 has a threaded hole and is installed on the lead screw 310 through the threaded hole. The upper end of the push-pull slider 308 is fixedly installed on the active piston 305. Thus, by moving the PC platform 4 to start the push-pull motor 311, the lead screw 310 is driven to rotate forward or reverse, thereby driving the active piston 305 to perform active reciprocating linear motion relative to the calibration cylinder body 302 via the push-pull slider 308.

[0067] The main function of the mobile PC platform 4 is to coordinate with the pulmonary function instrument for calibration and monitoring by controlling the operation of the push-pull cylinder 304 and the push-pull motor 311. The mobile PC platform 4 has a built-in linkage module. By connecting to the detection module of the pulmonary function instrument, the operation of the operator on the detection module of the pulmonary function instrument will be fed back to the linkage module of the PC platform. The linkage module controls the calibration device to automatically perform the corresponding work, thereby controlling it to drive the volume adjustment piston 303 and the active piston 305 to move at a constant speed. This solves the problems of uncontrollable speed of manually pushing the piston when using the traditional calibration cylinder, making it impossible to determine the calibration flow rate and flow rate, and the unstable and discontinuous flow rate, which leads to unsatisfactory calibration effect and poor accuracy. It also solves the problem of inaccurate calibration volume caused by the piston not moving to the correct position.

[0068] The specific implementation process is as follows:

[0069] The automatic calibration instrument for the spirometer of the pulmonary function instrument of the present invention consists of a multi-axis support assembly 1, an automatic calibration assembly 3, a support assembly 2, and a mobile PC platform 4. The assembly relationship of each component is as follows: the automatic calibration assembly 3 is assembled on the multi-axis support assembly 1, the multi-axis support assembly 1 is assembled on the support assembly 2, and the support assembly 2 can be fixed to any flat surface such as a treatment table or desktop. The mobile PC platform 4 acts as the control core to regulate the operation of the automatic calibration assembly 3, thereby achieving accurate calibration and testing of the spirometer's lung volume. The specific implementation process is as follows:

[0070] (1) Installation and fixing of support component 2

[0071] Support component 2 provides basic fixed support for the entire device. It needs to be installed on the working surface first. The specific operation is as follows: attach the suction head 2062 of support component 2 to the selected working surface (treatment table, desktop, etc.), start the vacuum pump 2061 on the side of support component 2. The suction head 2062 has a double structure. Its outer edge 2063 first attaches to the plane. Even if the plane is uneven, it can form a relatively sealed space. After the vacuum pump 2061 continuously draws a vacuum, the inner edge 2064 completes a second suction in the sealed space, so that support component 2 is firmly attached to the working surface.

[0072] Insert the docking rod 1012 at the bottom of the multi-axis bracket assembly 1 into the docking hole 203 of the support body 201. The docking boss 205 on the docking rod 1012 cooperates with the docking groove 1014 in the docking hole 203 to form a circumferential restraining force and improve the stability of the support.

[0073] Tighten the locking screw 202 on the support body 201. The locking screw 202 pushes down along the locking thread hole 204 to tighten the connecting rod 1012, further securing the multi-axis support assembly 1 to prevent displacement in subsequent work and ensure the stability of the calibration work.

[0074] (2) Attitude adjustment of multi-axis support assembly 1

[0075] The multi-axis support assembly 1 enables multi-dimensional attitude adjustment, allowing the automatic calibration assembly 3 to accurately align with the pulmonary function instrument to be calibrated. Adjustments to each joint are performed sequentially, and after all joint adjustments are completed, the self-locking shaft 105 achieves self-locking limitation to ensure attitude stability. The self-locking shaft 105 consists of a stop ring 1051 and a stop latch 1503. Self-locking is achieved by the stop round head 1054 of the stop latch 1503 engaging with the flange 1502 of the inner ring of the stop ring 1051. Specific adjustment steps are as follows:

[0076] Adjustment of base rotation shaft 101: Manually rotate the first hinge joint 1013 of base rotation shaft 101 to drive the entire multi-axis bracket assembly 1 to achieve 360° rotation in the horizontal plane. After adjusting to the appropriate working foundation azimuth angle, the self-locking shaft 105 automatically locks and fixes the angle.

[0077] Lower arm pitch axis 102 adjustment: After the angle of the base rotation axis 101 is fixed, manually adjust the lower arm pitch axis 102 so that it swings back and forth 180° relative to the base rotation axis 101 to achieve preliminary height adjustment in the vertical plane. After the adjustment is in place, the self-locking rotating shaft 105 at the connection is locked.

[0078] Upper arm pitch axis 103 adjustment: Manually adjust the upper arm pitch axis 103 (the main body is the second hinge joint) to make it swing back and forth 180° relative to the lower arm pitch axis 102, and work with the lower arm pitch axis 102 to complete the fine height adjustment in the vertical plane, further expanding the vertical working space. After adjustment, the self-locking rotating shaft 105 is locked.

[0079] Adjustment of wrist rotation axis 104: Manually rotate the wrist rotation body 1041 of the wrist rotation axis 104 to make it rotate 360° relative to the upper arm pitch axis 103, adjust the horizontal direction of the wrist and the docking platform 1042 above, so that the automatic calibration component 3 mounted on the docking platform 1042 is aligned with the lung function instrument to be calibrated. After adjustment, the self-locking shaft 105 is locked to complete the overall posture fixation of the multi-axis support assembly 1.

[0080] (3) Dating of automatic calibration component 3 with the pulmonary function instrument to be calibrated

[0081] The calibration connector 313 of the automatic calibration component 3 is connected to the pulmonary function instrument to be tested. The calibration connector 313 is connected to the active piston 305 through the telescopic hose 312. The telescopic hose 312 has flexible and adjustable characteristics, which can adapt to the needs of different docking positions, ensuring the sealing and connection of the air path after docking, and providing a guarantee for gas transmission in the subsequent calibration process.

[0082] (4) Setting the operating parameters of mobile PC platform 4

[0083] Staff members set calibration parameters through the mobile PC platform 4, providing control commands to the push-pull cylinder 304 and push-pull motor 311 of the automatic calibration component 3. According to the actual calibration requirements, the staff members need to set the stroke of the push-pull cylinder 304 (corresponding to the calibration capacity), the speed and direction of the push-pull motor 311 (corresponding to the movement speed and direction of the active piston 305), and other operating parameters to achieve precise control of the calibration process. After the parameters are set, the platform will control each component to run at a uniform speed according to the set commands.

[0084] (5) Adjustment of the working capacity of the calibration cylinder

[0085] The automatic calibration component 3 of this device has a capacity adjustment function of 1L to 5L. The capacity adjustment is achieved by the push-pull cylinder 304 driving the capacity adjustment piston 303: the mobile PC platform 4 sends a command to start the push-pull cylinder 304, and the working end of the push-pull cylinder 304 drives the capacity adjustment piston 303 to move linearly in the calibration cylinder body 302. By adjusting the position of the capacity adjustment piston 303 in the calibration cylinder body 302, the working capacity of the calibration cylinder body 302 is accurately adjusted to the preset calibration capacity. After the capacity adjustment is in place, the push-pull cylinder 304 keeps the position fixed, and the calibration capacity setting is completed.

[0086] (5) Calibration or testing of lung volume using a pulmonary function instrument

[0087] After the capacity setting is completed, the push-pull assembly 307 is activated via the mobile PC platform 4, driving the active piston 305 to perform uniform reciprocating linear motion, thereby calibrating or testing the pulmonary function instrument. Specific operational procedures are as follows:

[0088] The push-pull assembly 307 consists of a push-pull slider 308, a push-pull groove 309, a lead screw 310, and a push-pull motor 311. After the push-pull motor 311 is started, its output end drives the lead screw 310 to rotate forward or in reverse.

[0089] The push-pull slider 308 is engaged with the lead screw 310 through a threaded hole. The rotational motion of the lead screw 310 is converted into the linear reciprocating motion of the push-pull slider 308 in the push-pull groove 309. The upper end of the push-pull slider 308 is fixedly connected to the active piston 305, thereby driving the active piston 305 to make a uniform active reciprocating linear motion in the calibration cylinder body 302.

[0090] The active piston 305 has a gas delivery channel 306 in the middle. When the active piston 305 reciprocates linearly, gas enters and exits through the gas delivery channel 306, and then enters the pulmonary function instrument to be calibrated via the telescopic hose 312 and calibration connector 313 to simulate standard lung volume airflow changes and achieve the same calibration or testing function as a traditional calibration cylinder.

[0091] Throughout the process, the push-pull motor 311 is precisely controlled by the mobile PC platform 4 to ensure that the speed of the active piston 305 is stable and continuous, and to accurately control the calibrated flow rate and volume, thus avoiding problems such as uncontrollable speed and inaccurate volume caused by traditional manual piston pushing.

[0092] (7) Operations after calibration

[0093] After the calibration / testing of the pulmonary function instrument is completed, the staff issues a stop command through the mobile PC platform 4. The push-pull motor 311 and push-pull cylinder 304 stop running, and the active piston 305 and volume adjustment piston 303 return to their initial positions. Then, the locking screws 202 of the support assembly 2 are loosened in sequence, the docking rod 1012 of the multi-axis support assembly 1 is removed from the docking hole 203, the vacuum pump 2061 is turned off, and the adsorption head 2062 is separated from the working surface, completing the disassembly and storage of the entire device.

[0094] The structural design of all components in this device works together. From the vacuum adsorption fixation of the support component 2 to the self-locking attitude adjustment of the multi-axis support component 1, and the precise electrical control of the automatic calibration component 3 by the mobile PC platform 4, all of these provide a guarantee for the stability and accuracy of the calibration work. Compared with traditional calibration methods, it effectively solves problems such as unstable flow rate, poor calibration accuracy, and inaccurate volume, thereby improving the efficiency and reliability of pulmonary function instrument calibration and testing.

[0095] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An automatic calibrator for a spirometer of a pulmonary function instrument, characterized in that: The calibrator consists of a multi-axis support assembly (1), an automatic calibration assembly (3), a support assembly (2), and a mobile PC platform (4); The automatic calibration component (3) is assembled on the multi-axis support component (1), the multi-axis support component (2) is assembled on the support component (2), the support component (2) can be installed on any planar body in the working environment, the multi-axis support component (1) can be adjusted in any posture, and the automatic calibration component (3) is controlled by the mobile PC platform (4) to perform lung volume calibration of the pulmonary function instrument.

2. The automatic calibrator for a spirometer of a pulmonary function instrument according to claim 1, characterized in that: The multi-axis support assembly (1) consists of a base rotation axis (101), a lower arm pitch axis (102), an upper arm pitch axis (103), a wrist rotation axis (104), and a self-locking rotation axis (105). The base rotation axis (101), lower arm pitch axis (102), upper arm pitch axis (103), and wrist rotation axis (104) are connected sequentially through the self-locking rotation axis (105). The structure consists of a base body (1011), a connecting rod (1012), and a first hinge joint (1013). The connecting rod (1012) is fixedly installed at the bottom of the base body (1011) for connecting the support assembly (2). The first hinge joint (1013) is connected to the base body (1011) via a self-locking rotating shaft (105), and at the same time, the first hinge joint (1013) is connected to the lower arm pitch axis (102) via the self-locking rotating shaft (105). One end of the lower arm pitch axis (102) is connected to the first hinge joint (1013) of the base rotation axis (101) via a self-locking rotating shaft (105), and the other end is connected to the upper arm pitch axis (103) via the same self-locking rotating shaft (105). The upper arm pitch axis (103) is a second hinge joint, which has the same structure and function as the first hinge joint (1013). One end is connected to the lower arm pitch axis (102) through a self-locking rotating shaft (105), and the other end is connected to the wrist rotation axis (104) through a self-locking rotating shaft (105). The wrist rotation shaft (104) consists of a wrist rotation body (1041) and a docking platform (1042). The bottom of the wrist rotation body (1041) is connected to the second hinge joint via a self-locking shaft (105). The docking platform (1042) is fixedly mounted on the top of the wrist rotation body (1041) for mounting the automatic calibration component (3). The self-locking pivot (105) consists of a stop ring (1051) and a stop latch (1503). The stop ring (1051) and the stop latch (1503) are respectively located at the joints of the base rotation axis (101), the lower arm pitch axis (102), the upper arm pitch axis (103), and the wrist rotation axis (104). The inner ring of the stop ring (1051) has several flanges (1502) arranged circumferentially. The stop latch (1503) is in the shape of an "I" and has stop round heads (1054) at its four ends. The self-locking function is achieved by the engagement of the stop round heads (1054) and the several flanges (1502).

3. The automatic calibrator for a spirometer of a pulmonary function instrument according to claim 1, characterized in that: The support assembly (2) consists of a support body (201), a locking screw (202), and a vacuum adsorption assembly (206). The support body (201) is provided with a docking hole (203) through which the connecting rod of the multi-axis bracket assembly (1) is assembled. The support body (201) is provided with a locking threaded hole (204) located in the middle of the docking hole (203). The locking screw (202) is assembled in the locking threaded hole (204). After the connecting rod (1012) is assembled in the docking hole (203), the multi-axis bracket assembly (1) can be further tightened by tightening the locking screw (202).

4. The automatic calibrator for a spirometer of a pulmonary function instrument according to claim 3, characterized in that: The vacuum adsorption assembly (206) consists of a vacuum pump (2061) and an adsorption head (2062). The vacuum pump (2061) is fixedly mounted on the side of the support assembly (2), and the adsorption head (2062) is mounted on the working end of the vacuum pump (2061).

5. The automatic calibrator for a spirometer of a pulmonary function instrument according to claim 3, characterized in that: The multi-axis support assembly (1) has a mating boss (205) and a mating groove (1014) respectively on the docking rod (1012) and the docking hole (203) of the support assembly (2). The mating boss (205) and the mating groove (1014) provide an additional circumferential restraining force for the support assembly (2) to support the multi-axis support assembly (1).

6. The automatic calibrator for a spirometer of a pulmonary function instrument according to claim 4, characterized in that: The vacuum adsorption assembly (206) has a dual structure, with the adsorption end of the adsorption head (2062) divided into an outer edge (2063) and an inner edge (2064).

7. The automatic calibrator for a spirometer of a pulmonary function instrument according to claim 1, characterized in that: The automatic calibration assembly (3) consists of a calibration platform (301), a calibration cylinder body (302), a capacity adjusting piston (303), a push-pull cylinder (304), an active piston (305), a push-pull assembly (307), a telescopic hose (312), and a calibration connector (313). The calibration platform (301) is mounted on the docking platform (1042) of the multi-axis support assembly (1). The calibration cylinder body (302) is fixedly mounted in the middle of the calibration platform (301). The push-pull cylinder (304) is mounted at one end of the calibration platform (301) near the rear end of the calibration cylinder body (302). One end of the capacity adjusting piston (303) is mounted inside the calibration cylinder body (302), and the other end is connected to the working end of the push-pull cylinder (304). The active piston (305) is mounted on the calibration cylinder. At the end of the main body (302) away from the volume adjustment piston (303), the push-pull assembly (307) is mounted in the middle of the calibration platform (301). The working part of the push-pull assembly (307) is connected to the active piston (305). The push-pull assembly (307) can drive the active piston (305) to perform active reciprocating linear motion relative to the calibration cylinder main body (302). The active piston (305) has an air supply channel (306) in the middle. One end of the telescopic hose (312) is connected to the end of the active piston (305) away from the calibration cylinder main body (302) and is connected to the air supply channel (306). The calibration connector (313) is fixedly mounted at the end of the telescopic hose (312) away from the active piston (305). The calibration connector (313) can be connected to the pulmonary function instrument to be tested.

8. The automatic calibrator for a spirometer of a pulmonary function instrument according to claim 7, characterized in that: The push-pull assembly (307) includes a push-pull slider (308), a push-pull groove (309), a lead screw (310), and a push-pull motor (311). The lead screw (310) is assembled in the push-pull groove (309), and the push-pull motor (311) is assembled at one end of the push-pull groove (309). The output end of the push-pull motor (311) is connected to the lead screw (310). The push-pull slider (308) has a threaded hole and is assembled on the lead screw (310) through the threaded hole. The upper end of the push-pull slider (308) is fixedly assembled to the active piston (305).

9. An automatic calibrator for a spirometer of a pulmonary function instrument according to claim 7, characterized in that: The automatic calibration component (3) has a capacity adjustment function.

10. An automatic calibrator for a spirometer according to any one of claims 1-9, characterized in that: The mobile PC platform (4) has a built-in linkage module. By connecting to the detection module of the pulmonary function instrument, the operation of the staff on the detection module of the pulmonary function instrument will be fed back to the linkage module of the PC platform. The linkage module controls the calibration device to automatically perform the corresponding work, thereby controlling it to drive the volume adjustment piston (303) and the active piston (305) to move at a constant speed.

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