Precision detection assembly and cardio-pulmonary resuscitation machine quality control detection device

Abstract

The utility model relates to a precision detection assembly and a cardio-pulmonary resuscitation machine quality control detection device. The precision detection assembly comprises a body and a plurality of depth self-inspection scales with different lengths. The bottom surface of the body is provided with a reference surface, and the body is provided with a first connecting structure; the depth self-checking scale comprises a connecting part and a detecting part which are coaxially arranged, and the connecting part is provided with a second connecting structure. The precision detection assembly can be used for detecting the precision of the quality control detection device of the cardio-pulmonary resuscitation machine. The utility model further relates to a cardio-pulmonary resuscitation machine quality control detection device which comprises a pressing module, a measurement and control module and a power module. The pressing module comprises a pressing platform, an elastic piece, a guide bracket and a displacement sensor; the pressing platform is slidably connected with the guide bracket; the elastic piece is mounted between the guide bracket and the pressing platform; the measurement and control module comprises a control unit and a display module. The control unit is connected with the display module and the displacement sensor. According to the utility model, a plurality of parameters of the cardio-pulmonary resuscitation machine can be detected.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment and relates to an accuracy detection component and a quality control detection device for a cardiopulmonary resuscitation machine. Background Art

[0002] The State Food and Drug Administration and the National Health and Family Planning Commission have respectively promulgated the "Medical Device Quality Supervision and Management Measures" and the "Medical Device Clinical Use Management Measures", both of which clearly state that "medical institutions should inspect, test, calibrate, maintain and service medical devices that require regular inspection, testing, calibration, maintenance and service in accordance with the requirements of the product manual and keep records, conduct timely analysis and evaluation, and ensure that the medical devices are in good condition."

[0003] The measurement standards and other equipment used in the test conditions in the current "JJF1748-2019 Cardiopulmonary Resuscitation Machine Testing Specifications" are used by airflow analyzers, rangefinders, standard pressure gauges, etc. to test parameters such as compression depth, compression frequency, single air blowing frequency, and tidal volume. In particular, the parameter of compression depth is particularly important. If the compression is too shallow, it will not effectively squeeze the heart and chest cavity, and will not increase cardiac output. If the compression is too deep, it will cause damage to the sternum and ribs, causing secondary trauma to the patient. Therefore, it is necessary to regularly test various indicators of the cardiopulmonary resuscitation machine. Therefore, the quality control detection device of the cardiopulmonary resuscitation machine also needs to meet a higher precision.

[0004] Therefore, it is necessary to develop a new precision detection component and a cardiopulmonary resuscitation machine quality control detection device. Utility Model Content

[0005] The utility model aims to provide an accuracy detection component, which can detect the accuracy of a quality control detection device of a cardiopulmonary resuscitation machine.

[0006] Another object of the utility model is to provide a cardiopulmonary resuscitation machine quality control detection device, which can realize the inspection of its own accuracy and can detect multiple parameters of the cardiopulmonary resuscitation machine at the same time, that is, it can complete all the tests in one cardiopulmonary resuscitation cycle.

[0007] In a first aspect, the present invention provides an accuracy detection assembly, comprising a main body and a plurality of depth self-detection scales of different lengths;

[0008] The bottom surface of the body is provided with a reference surface, and the middle part of the body is provided with a first connecting structure;

[0009] The depth self-detection scale comprises a connecting portion and a detecting portion which are coaxially arranged. A second connecting structure is arranged on the connecting portion. The depth self-detection scale is detachably connected to the first connecting structure of the body through the second connecting structure.

[0010] Optionally, the first connection structure is a threaded hole, and the second connection structure is a thread. Connecting through the thread and the threaded hole has the advantages of convenient and simple connection.

[0011] Optionally, there are three depth self-detection scales, and the lengths of the detection parts thereof are 30 mm, 50 mm and 70 mm respectively.

[0012] In a second aspect, a cardiopulmonary resuscitation machine quality control detection device described in the utility model includes a pressing module, a measurement and control module, a power supply module and an accuracy detection component as described in the utility model;

[0013] The pressing module includes a pressing platform, an elastic member, a guide bracket and a displacement sensor; the pressing platform is slidably connected to the guide bracket, and the pressing platform can move in a vertical direction relative to the guide bracket; the elastic member is used to simulate the automatic rebound of the human chest cavity, and the elastic member is installed between the guide bracket and the pressing platform; the displacement sensor is used to collect the pressing depth of the pressing platform;

[0014] The measurement and control module includes a control unit and a display module. The control unit is connected to the display module and the displacement sensor respectively. The control unit calculates the pressing depth and / or pressing frequency of the pressing platform according to the data collected by the displacement sensor, and sends the data to the display module for display.

[0015] The power supply module is connected to the measurement and control module and the displacement sensor respectively.

[0016] Optionally, a gas monitoring module is further included, wherein the gas monitoring module includes a pipeline and a bidirectional gas flow meter;

[0017] The bidirectional gas flow meter is used to detect the gas flow information in the pipeline when the gas is input into the pipeline;

[0018] The bidirectional gas flow meter is connected to the control unit and the power module respectively. The control unit detects the actual blowing frequency and / or actual tidal volume of the tested cardiopulmonary resuscitation machine according to the data detected by the bidirectional gas flow meter.

[0019] Optionally, the gas monitoring module further includes a pressure sensor for detecting gas pressure information in the pipeline when gas is input into the pipeline;

[0020] The pressure sensor is connected to the control unit and the power module respectively.

[0021] Optionally, the pressing platform is provided with a first guide portion extending downward, the guide bracket is provided with a second guide portion extending upward, and the pressing platform is slidably connected to the second guide portion of the guide bracket via the first guide portion. When the pressing platform is pressed by a weight or a cardiopulmonary resuscitation machine, the pressing platform is guided by the cooperation of the first guide portion and the second guide portion.

[0022] Optionally, at least one guide protrusion extending along the axial direction of the first guide portion is provided on the outer surface thereof, and a guide groove corresponding to the guide protrusion is provided on the inner wall of the second guide portion. When the up and down movement of the pressing platform is guided only by the first guide portion and the second guide portion, the pressing platform may rotate around its axial direction during the movement. In order to solve this problem, a guide protrusion and a guide groove are further provided, and the rotation problem is solved by the cooperation of the guide protrusion and the guide groove.

[0023] Optionally, it also includes a shell, the control unit of the pressing module, the gas monitoring module and the measurement and control module are all arranged in the shell, and the display module is arranged on the shell; a pressing avoidance hole is opened on the upper surface of the shell at a position corresponding to the pressing platform.

[0024] The beneficial effects of the utility model are:

[0025] 1. The precision detection component described in the utility model can detect the precision of the pressing module, and has a simple structure, low cost and high detection efficiency.

[0026] 2. The cardiopulmonary resuscitation machine quality control detection device described in the utility model can detect indicators such as the load capacity, no-load capacity, compression frequency, blowing frequency and tidal volume of the cardiopulmonary resuscitation machine.

[0027] 3. The cardiopulmonary resuscitation machine quality control detection device described in the utility model can also simultaneously detect multiple parameters of the cardiopulmonary resuscitation machine, such as the load capacity (or no-load capacity), compression frequency, blowing frequency and tidal volume, so that the detection personnel can complete the detection of all detection items within one detection cycle, improve the consistency of the detection results and the detection efficiency, and simplify the setting of the metering equipment, which is convenient for the operation of medical personnel.

[0028] 4. The cardiopulmonary resuscitation machine quality control detection device described in the utility model can complete the relevant part detection of the blowing through the two-way gas flow meter, saving installation space and reducing production costs. At the same time, it is small in size, not only occupies a small space, but also is easy to carry.

[0029] 5. The cardiopulmonary resuscitation machine quality control and detection device described in the utility model adopts a pressing and resetting structure formed by the cooperation of an elastic member and a guide bracket, which can ensure that the position of the pressing platform does not deviate, thereby improving the stability of product use.

[0030] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, in which:

[0032] Figure 1 This is a schematic diagram of the structure of the accuracy detection component described in the embodiment of the present application;

[0033] Figure 2 It is an overall schematic diagram of the cardiopulmonary resuscitation machine quality control detection device described in the embodiment of the present application (excluding the accuracy detection component);

[0034] Figure 3 Schematic diagram of the internal structure of the cardiopulmonary resuscitation machine quality control detection device described in the embodiment of the present application (excluding the accuracy detection component);

[0035] Figure 4 This is a schematic diagram of the cooperation between the pressing platform and the guide bracket in the embodiment of the present application;

[0036] Figure 5 This is a diagram showing the use status of the cardiopulmonary resuscitation machine quality control detection device described in the embodiment of the present application;

[0037] Figure 6 It is a principle block diagram of the cardiopulmonary resuscitation machine quality control detection device described in the embodiment of the present application;

[0038] Figure markings: 1-pressing platform; 1a-first guide part; 1b-fixing screw hole; 1c-guide protrusion; 2-display module; 3-shell; 3a-pressing avoidance hole; 3b-inclined surface; 4-guide bracket; 4a-second guide part; 4b-guide groove; 5-power module; 6-pressure sensor; 7-cardiopulmonary resuscitation machine interface; 8-control unit; 9-pipeline; 10-displacement sensor; 11-bidirectional gas flowmeter; 12-elastic part; 13-weight; 14-tray; 14a-pressing part; 15-bolt; 16-depth detection scale; 16a-connecting part; 16b-detecting part; 17-main body; 17a-reference plane; 17b-first connecting structure. DETAILED DESCRIPTION

[0039] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0040] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present utility model. In order to better illustrate the embodiments of the present utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0041] like Figure 1 As shown, in an embodiment of the present application, an accuracy detection component, an accuracy detection component, includes a body 17 and a plurality of depth self-detection scales 16 of different lengths. Among them, the bottom surface of the body 17 is provided with a reference surface 17a, and the middle part of the body 17 is provided with a first connection structure 17b. The depth self-detection scale 16 includes a coaxially arranged connection part 16a and a detection part 16b, wherein a second connection structure is provided on the connection part 16a, and the depth self-detection scale 16 can be detachably connected to the first connection structure 17b of the body 17 through the second connection structure.

[0042] like Figure 1 As shown, as a possible embodiment, the first connection structure 17b is a threaded hole. The second connection structure is a thread. The combination of thread and threaded hole has the advantages of simple processing and convenient assembly and disassembly. In addition, the accuracy of the detection part 16b of the depth self-detection scale 16 is also easy to control.

[0043] As a possible embodiment, the first connection structure 17b is a slot (not shown in the figure), and the second connection structure is a buckle (not shown in the figure), and the connection between the two is achieved by the cooperation between the buckle and the slot.

[0044] As a possible embodiment, there are three depth self-detection scales 16, and the lengths of the detection parts thereof are 30 mm, 50 mm and 70 mm respectively.

[0045] like Figure 2 , Figure 3 and Figure 6As shown, in an embodiment of the present application, a cardiopulmonary resuscitation machine quality control detection device includes a pressing module, a gas monitoring module, a measurement and control module and a power module 5. Among them, the pressing module includes a pressing platform 1, an elastic member 12, a guide bracket 4 and a displacement sensor 10. The pressing platform 1 is slidably connected to the guide bracket 4, and the pressing platform 1 can move in the vertical direction relative to the guide bracket 4. The elastic member 12 is used to simulate the automatic rebound of the human chest cavity, and the elastic member 12 is installed between the guide bracket 4 and the pressing platform 1. The displacement sensor 10 is used to collect the pressing depth of the pressing platform 1. The gas monitoring module includes a pipeline 9 and a two-way gas flowmeter 11, wherein the two-way gas flowmeter 11 is used to detect the gas flow information in the pipeline 9 when the gas is input into the pipeline 9. The measurement and control module includes a control unit 8 and a display module 2, wherein the control unit 8 is respectively connected to the display module 2, the displacement sensor 10 and the two-way gas flowmeter 11. The control unit 8 calculates the compression depth and / or compression frequency of the compression platform 1 according to the data collected by the displacement sensor 10, and detects the actual blowing frequency and / or actual tidal volume of the tested cardiopulmonary resuscitation machine according to the data detected by the two-way gas flow meter 11, and sends them to the display module 2 for display. The power module 5 is respectively connected to the measurement and control module, the displacement sensor 10, and the two-way gas flow meter 11, and the power module 5 supplies power to the measurement and control module, the displacement sensor 10, and the two-way gas flow meter 11.

[0046] The “ / ” in the embodiments of the present application means “or”.

[0047] like Figure 6 As shown, the process of checking the accuracy of the pressing module using the accuracy detection component is as follows:

[0048] First, the pressing platform 1 is pressed through the reference surface 17a of the main body 17 to make the reference surface 17a fit with the upper surface of the shell 3. At this time, the cardiopulmonary resuscitation machine quality control detection device detects the displacement of the pressing platform 1 (also the deformation of the elastic member 12) through the displacement sensor 10. The cardiopulmonary resuscitation machine quality control detection device automatically marks the voltage value output by the displacement sensor 10 in this state as the zero position, thereby completing the zero position calibration.

[0049] Next, connect the depth self-test scale 16 with a detection part 16b of 30mm in length to the main body 17, press the main body 17 so that the reference surface 17a of the main body 17 fits with the upper surface of the shell 3, and read the pressing depth value on the cardiopulmonary resuscitation machine quality control detection device at this time (for example: 30.16mm), 30.16-30=0.16mm, because 0.16mm is less than 0.5mm (0.5mm is the industry standard), so the accuracy of the cardiopulmonary resuscitation machine quality control detection device at the position of 30mm meets the requirements.

[0050] Then, remove the depth self-test ruler 16 with a detection part 16b of 30mm in length, connect the depth self-test ruler 16 with a detection part 16b of 50mm in length to the main body 17, press the main body 17 to make the reference surface 17a of the main body 17 fit with the upper surface of the shell 3, and read the pressing depth value on the cardiopulmonary resuscitation machine quality control detection device at this time (for example: 50.26mm), 50.26-50=0.26mm, because 0.26mm is less than 0.5mm, the accuracy of the cardiopulmonary resuscitation machine quality control detection device at the position of 50mm meets the requirements.

[0051] Finally, remove the depth self-test ruler 16 with a detection part 16b of 50mm in length, connect the depth self-test ruler 16 with a detection part 16b of 70mm in length to the main body 17, press the main body 17 to make the reference surface 17a of the main body 17 fit with the upper surface of the shell 3, and read the pressing depth value on the cardiopulmonary resuscitation machine quality control detection device at this time (for example: 69.76mm), 69.76-70=-0.24mm, because 0.24mm is less than 0.5mm, so the accuracy of the cardiopulmonary resuscitation machine quality control detection device at the position of 70mm meets the requirements.

[0052] When testing the accuracy of the cardiopulmonary resuscitation machine quality control detection device, if the detected data is not within the error range specified by the industry, it means that the accuracy of the cardiopulmonary resuscitation machine quality control detection device itself cannot meet the requirements. That is, the cardiopulmonary resuscitation machine quality control detection device needs to be repaired and calibrated by technicians.

[0053] like Figure 3 and Figure 6 As shown, in a possible embodiment, a cardiopulmonary resuscitation machine quality control detection device, wherein the gas monitoring module also includes a pressure sensor 6, which is used to detect the gas pressure information in the pipeline 9 when the gas is input into the pipeline 9. The pressure sensor 6 is connected to the control unit 8 and the power module 5 respectively, and the control unit 8 detects the blowing pressure of the cardiopulmonary resuscitation machine under test according to the data detected by the pressure sensor 6. The power module 5 supplies power to the pressure sensor 6. An airway pressure interface is reserved on the pipeline 9, and the pressure sensor 6 is installed on the pipeline 9 through the airway pressure interface, and its airtightness is ensured to be good. After the monitoring starts, the airway pressure waveform will be displayed in real time on the display module 2, and the calibrator can adjust the ventilation pressure setting of the cardiopulmonary resuscitation machine under test according to the waveform.

[0054] like Figure 4As shown, in a possible embodiment, the pressing platform 1 is provided with a first guide portion 1a extending downward. The guide bracket 4 is provided with a second guide portion 4a extending upward. The pressing platform 1 is slidably connected with the second guide portion 4a of the guide bracket 4 through the first guide portion 1a. When the pressing platform 1 is pressed by the weight 13 or the pump head of the cardiopulmonary resuscitation machine, the downward movement of the pressing platform 1 and the upward reset process of the pressing platform 1 under the elastic force of the elastic member 12 are guided by the cooperation of the first guide portion 1a and the second guide portion 4a.

[0055] like Figure 4 As shown, in a possible embodiment, at least one guide protrusion 1c extending along its axial direction is provided on the outer surface of the first guide portion 1a, and a guide groove 4b corresponding to and matching the guide protrusion 1c is provided on the inner wall of the second guide portion 4a. When the up and down movement of the pressing platform 1 is guided only by the first guide portion 1a and the second guide portion 4a, the pressing platform 1 may have the problem of rotating around its axial direction during the movement. In order to solve this problem, a guide protrusion 1c and a guide groove 4b are further provided, and the rotation problem is solved by the cooperation of the guide protrusion 1c and the guide groove 4.

[0056] like Figure 2 As shown, in a possible embodiment, a cardiopulmonary resuscitation machine quality control detection device further includes a housing 3, wherein the pressing module, the gas monitoring module and the control unit 8 of the measurement and control module are all arranged in the housing 3, and the display module 2 is arranged on the housing 3. The housing 3 can protect each module to prevent the parts from being damaged and crashed, and has a certain dustproof effect. A pressing avoidance hole 3a is opened on the upper surface of the housing 3 at a position corresponding to the pressing platform 1.

[0057] like Figure 1 and Figure 2 As shown, in a possible embodiment, one side of the upper surface of the housing 3 is tilted downward to form an inclined surface 3b, and the display module 2 is arranged on the inclined surface 3b. The display module 2 is arranged on the inclined surface 3b to facilitate operation and reading by operators.

[0058] In a possible embodiment, the elastic member 12 is a cylindrical spring. Using a cylindrical spring to simulate the rebound force of the chest is more in line with the actual situation during cardiopulmonary resuscitation and compression, and improves the accuracy of detection.

[0059] In a possible embodiment, the displacement sensor 10 is a laser displacement transmitter. The display module 2 is a touch display screen.

[0060] In a possible embodiment, the control unit 8 adopts a PLC control unit, which is integrated with an analog-to-digital conversion subunit, and the analog-to-digital conversion subunit is used to convert the analog signals collected by the displacement sensor 10, the bidirectional gas flow meter 11 and the pressure sensor 6 into digital signals.

[0061] like Figure 5 As shown, the following takes three weights 13 with masses of 30kg, 40kg and 50kg as examples to describe the process of using the cardiopulmonary resuscitation machine quality control detection device to detect the load capacity of the cardiopulmonary resuscitation machine as follows:

[0062] (1) The pressing portion 14a of the tray 14 is placed on the pressing platform 1 of the cardiopulmonary resuscitation machine quality control detection device. A mounting hole is provided at the bottom of the pressing portion 14a. A fixing screw hole corresponding to the mounting hole is opened on the pressing platform 1, and the tray 14 is fixedly connected to the pressing platform 1 with bolts 15.

[0063] (2) A weight 13 with a mass of 30 kg is selected and placed on the tray 14. At this time, the cardiopulmonary resuscitation machine quality control detection device automatically calculates the first pressing depth corresponding to the 30 kg weight 13 and displays it through the display module 2. For the accuracy of the data, the weight 13 of the same mass can be tested several times again, and the first pressing depth obtained in each test can be recorded respectively. For example: at least three tests are performed for the 30 kg weight 13, and the first pressing depths of the three tests are recorded as 29.98 mm, 30.01 mm, and 30.05 mm.

[0064] (3) Remove the 30kg weight 13 and select a 40kg or 50kg weight for testing. The operation method is the same as that for the 30kg weight. After the test, remove the weight 13.

[0065] (4) Install the cardiopulmonary resuscitation machine, set the working compression depth on the cardiopulmonary resuscitation machine to be tested, for example, 29.98 mm, operate the cardiopulmonary resuscitation machine quality control detection device and the cardiopulmonary resuscitation machine to start working, the cardiopulmonary resuscitation machine to be tested presses the compression platform 1 through the pump head, and the cardiopulmonary resuscitation machine quality control detection device automatically calculates the second compression depth of the cardiopulmonary resuscitation machine to be tested and displays it through the display module 2. If the second compression depth is 29.80 mm at this time, |29.80-29.98|≤0.5 mm (0.5 mm is the industry standard).

[0066] The working compression depth of the tested cardiopulmonary resuscitation machine is set to 30.01 mm, and the compression platform 1 is pressed by the pump head of the tested cardiopulmonary resuscitation machine. If the second compression depth is 30.20 mm at this time, |30.20-30.01|≤0.5 mm.

[0067] The working compression depth of the tested cardiopulmonary resuscitation machine is set to 30.05 mm, and the compression platform 1 is pressed by the pump head of the tested cardiopulmonary resuscitation machine. If the second compression depth is 30.25 mm at this time, |30.25-30.01|≤0.5 mm.

[0068] The above three test results all indicate that the load capacity of the cardiopulmonary resuscitation machine is sufficient to withstand 30kg of chest rebound force.

[0069] The test method for 40kg and 50kg weights is the same as that for 30kg weights.

[0070] If the compression depth difference between the second compression depth and the first compression depth difference obtained by testing with a 40k weight is not within the preset depth difference range, it means that the load capacity of the cardiopulmonary resuscitation machine is insufficient to bear the 40kg chest rebound force.

[0071] When the cardiopulmonary resuscitation machine load capacity detection device is used to test the load capacity of the cardiopulmonary resuscitation machine, the elastic force of the elastic member 12 is between 30kg and 50kg.

[0072] The cardiopulmonary resuscitation machine load capacity detection device can also be used to test the no-load capacity of the cardiopulmonary resuscitation machine being tested, specifically:

[0073] When conducting a no-load capacity test, the elastic member 12 only needs to satisfy the requirement that the pressing platform 1 can be reset after being pressed down. During the test, the pressing depth of the cardiopulmonary resuscitation machine under test is set, and the pressing platform 1 is pressed by the pump head of the cardiopulmonary resuscitation machine under test. The cardiopulmonary resuscitation machine load capacity detection device automatically calculates the second pressing depth of the cardiopulmonary resuscitation machine under test and displays it through the display module 2. If the difference between the set pressing depth and the second pressing depth is within the preset depth difference range, it means that the pressing depth of the cardiopulmonary resuscitation machine under test meets the requirements under no load, otherwise it means that the pressing depth under no load does not meet the requirements.

[0074] When the load capacity and no-load capacity of the cardiopulmonary resuscitation machine are tested, the compression frequency can also be calculated based on the analog voltage value output by the displacement sensor 10, and the actual blowing frequency and actual tidal volume can be calculated based on the data detected by the bidirectional gas flow meter 11, specifically:

[0075] (1) Before the test, the pipe 9 of the cardiopulmonary resuscitation machine quality control detection device is connected to the gas source, and the cardiopulmonary resuscitation machine under test controls the gas source to input gas into the pipe 9 through the electromagnetic flow valve. The working blowing frequency, working tidal volume and working compression frequency also need to be set on the cardiopulmonary resuscitation machine under test.

[0076] (2) During the test, when the pressing platform 1 is pressed by the pump head of the cardiopulmonary resuscitation machine under test, the cardiopulmonary resuscitation machine quality control detection device calculates the actual pressing frequency and actual pressing depth of the cardiopulmonary resuscitation machine under test based on the data detected by the displacement sensor 10, and calculates the actual blowing frequency and actual tidal volume based on the data detected by the bidirectional gas flowmeter 11.

[0077] (3) Calculate the difference in compression frequency between the actual compression frequency and the working compression frequency. If the compression frequency difference is within the preset compression frequency difference range, it means that the compression frequency of the cardiopulmonary resuscitation machine under test meets the requirements, otherwise it means that the compression frequency of the cardiopulmonary resuscitation machine under test does not meet the requirements. The preset compression frequency difference range is set according to industry standards. If the blowing frequency difference is within the preset blowing frequency difference range, it means that the blowing frequency of the cardiopulmonary resuscitation machine under test meets the requirements, otherwise it means that the blowing frequency does not meet the requirements. If the tidal volume difference is within the preset tidal volume difference range, it means that the tidal volume of the cardiopulmonary resuscitation machine under test meets the requirements, otherwise it means that the tidal volume does not meet the requirements.

[0078] During the entire test process, the cardiopulmonary resuscitation machine quality control detection device can also detect the pressure data in the pipeline 9 through the pressure sensor 6 to detect the blowing pressure of the cardiopulmonary resuscitation machine under test.

[0079] In the embodiment of the present application, the measurement and control module compares the cumulative forward ventilation flow value of a single blow with the working tidal volume manually input by the user. After completing the entire metering process, the tidal volume difference between the mean tidal volume (i.e., the actual tidal volume) and the working tidal volume is calculated and displayed on the display module.

[0080] In the embodiment of the present application, the measurement and control module calculates the pressing frequency according to the analog voltage value output by the displacement sensor 10. Within a certain metering period, the measurement and control module calculates the average pressing frequency by using a step counting algorithm to count the number of times the voltage peak occurs:

[0081]

[0082] Wherein, f1 is the average pressing frequency (ie, the actual pressing frequency), the unit is Hz, N is the number of times the voltage peak occurs within T time, and T is the measurement cycle time.

[0083] In the embodiment of the present application, the measurement and control module records the time point when the gas flow rate is 0 through the zero point detection algorithm, and records the suction zero point t when the gas flow rate is higher than 10 sccm. I , when it is lower than -10sccm, record the exhalation zero point t E , by calculating the time of the entire exhalation and inhalation cycle, the actual blowing frequency of the cardiopulmonary resuscitation machine is obtained in real time:

[0084]

[0085] Among them, f2 is the actual blowing frequency of the cardiopulmonary resuscitation machine.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. An accuracy detection component, characterized in that: It comprises a main body (17) and a plurality of depth self-testing scales (16) of different lengths; The bottom surface of the body (17) is provided with a reference surface (17a), and the middle portion of the body (17) is provided with a first connection structure (17b); The depth self-detection scale (16) comprises a coaxially arranged connection portion (16a) and a detection portion (16b); a second connection structure is provided on the connection portion (16a); and the depth self-detection scale (16) is detachably connected to the first connection structure (17b) of the body (17) via the second connection structure.

2. The accuracy detection component according to claim 1, characterized in that: The first connection structure (17b) is a threaded hole; and the second connection structure is a thread.

3. The accuracy detection component according to claim 1, characterized in that: There are three depth self-detection scales (16) in total, and the lengths of their detection parts are 30 mm, 50 mm and 70 mm respectively.

4. A cardiopulmonary resuscitation machine quality control detection device, characterized in that: It comprises a pressing module, a measurement and control module, a power supply module (5) and an accuracy detection component as claimed in any one of claims 1 to 3; The pressing module comprises a pressing platform (1), an elastic member (12), a guide bracket (4) and a displacement sensor (10); the pressing platform (1) is slidably connected to the guide bracket (4), and the pressing platform (1) can move in a vertical direction relative to the guide bracket (4); the elastic member (12) is used to simulate the automatic rebound of the human chest cavity, and the elastic member (12) is installed between the guide bracket (4) and the pressing platform (1); the displacement sensor (10) is used to collect the pressing depth of the pressing platform (1); The measurement and control module comprises a control unit (8) and a display module (2), wherein the control unit (8) is connected to the display module (2) and the displacement sensor (10) respectively, and the control unit (8) calculates the pressing depth and / or pressing frequency of the pressing platform (1) based on data collected by the displacement sensor (10), and sends the calculated data to the display module (2) for display; The power module (5) is connected to the measurement and control module and the displacement sensor (10) respectively.

5. The cardiopulmonary resuscitation machine quality control detection device according to claim 4, characterized in that: Also included is a gas monitoring module, the gas monitoring module comprising a pipeline (9) and a bidirectional gas flow meter (11); The bidirectional gas flow meter (11) is used to detect gas flow information in the pipeline (9) when gas is input into the pipeline (9); The bidirectional gas flow meter (11) is connected to the control unit (8) and the power module (5) respectively, and the control unit (8) detects the actual blowing frequency and / or the actual tidal volume of the cardiopulmonary resuscitation machine under test according to the data detected by the bidirectional gas flow meter (11).

6. The cardiopulmonary resuscitation machine quality control detection device according to claim 5, characterized in that: The gas monitoring module further comprises a pressure sensor (6) for detecting gas pressure information in the pipeline (9) when gas is input into the pipeline (9); The pressure sensor (6) is connected to the control unit (8) and the power module (5) respectively.

7. The cardiopulmonary resuscitation machine quality control detection device according to claim 4, characterized in that: The pressing platform (1) is provided with a first guide portion (1a) extending downward, and the guide bracket (4) is provided with a second guide portion (4a) extending upward. The pressing platform (1) is slidably connected to the second guide portion (4a) of the guide bracket (4) via the first guide portion (1a).

8. The cardiopulmonary resuscitation machine quality control detection device according to claim 7, characterized in that: At least one guide protrusion (1c) extending axially thereof is provided on the outer surface of the first guide portion (1a), and a guide groove (4b) corresponding to and matching the guide protrusion (1c) is provided on the inner wall of the second guide portion (4a).

9. The cardiopulmonary resuscitation machine quality control detection device according to claim 6, characterized in that: It also comprises a shell (3), wherein the pressing module, the gas monitoring module and the control unit (8) of the measurement and control module are all arranged in the shell (3), and the display module (2) is arranged on the shell (3); a pressing avoidance hole (3a) is provided on the upper surface of the shell (3) at a position corresponding to the pressing platform (1).

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