Cardiopulmonary resuscitation machine load capacity detection device

Abstract

The utility model relates to a cardio-pulmonary resuscitation machine load capacity detection device which comprises a pressing module, a measurement and control module, a communication module and a power supply module. The pressing module comprises a pressing platform, an elastic piece, a guide bracket and a displacement sensor; the pressing platform is in sliding connection with the guide bracket, and the pressing platform can move in the vertical direction relative to the guide bracket; the elastic piece is used for simulating automatic rebound of the chest of a human body and is mounted between the guide bracket and the pressing platform; the displacement sensor is used for collecting the pressing depth of the pressing platform; the measurement and control module is connected with the communication module and the displacement sensor. The measurement and control module calculates the pressing depth of the pressing platform according to data collected by the displacement sensor; the communication module is used for communication between the measurement and control module and external equipment; the power supply module is connected with the measurement and control module and the displacement sensor. According to the utility model, the load capacity 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 a load capacity 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 testing conditions in the current "JJF1748-2019 Cardiopulmonary Resuscitation Machine Testing Specifications" include airflow analyzers, rangefinders, standard pressure gauges, etc., which test parameters such as compression depth, compression frequency, single airflow frequency, and tidal volume, but do not test the load capacity of the cardiopulmonary resuscitation machine.

[0004] Therefore, it is necessary to develop a new device for detecting the load capacity of a cardiopulmonary resuscitation machine. Summary of the invention

[0005] The utility model aims to provide a cardiopulmonary resuscitation machine load capacity detection device, which can be used to detect the load capacity of the cardiopulmonary resuscitation machine.

[0006] The cardiopulmonary resuscitation machine load capacity detection device described in the utility model comprises a pressing module, a measurement and control module, a communication module and a power supply module;

[0007] The pressing module includes a pressing platform, an elastic member, a guide bracket and a displacement sensor; wherein 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;

[0008] The measurement and control module is connected to the communication module and the displacement sensor respectively; the measurement and control module calculates the pressing depth of the pressing platform according to the data collected by the displacement sensor; the communication module is used for the measurement and control module to communicate with the external device;

[0009] The power supply module is connected to the measurement and control module and the displacement sensor respectively.

[0010] Optionally, a tray is further included, on which a pressing portion extending downward is provided. When checking the load capacity of the cardiopulmonary resuscitation machine, a weight with a mass of 30kg to 50kg is generally required, and the weight of 30kg to 50kg has the characteristic of being large in volume, so it is necessary to set a sufficiently large bearing surface for it, which will cause the volume of the entire device to be larger. In order to avoid this problem, by adding a tray, when using this cardiopulmonary resuscitation machine load capacity detection device to test the load capacity of the cardiopulmonary resuscitation machine, the tray is placed on the pressing platform, and when not in use, the tray can be removed.

[0011] Optionally, the bottom of the pressing portion is provided with a mounting hole for connecting with the pressing platform;

[0012] A fixing bolt hole is provided in the middle of the pressing platform at a position corresponding to the mounting hole;

[0013] The tray can be fixedly connected to the pressing platform by bolts through the mounting holes and the fixing bolt holes. If the tray is directly placed on the pressing platform, the weight and the tray may slide down together, thus posing a safety hazard. In order to solve this problem, the tray and the pressing platform are fixedly connected by bolts.

[0014] 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 first guide portion and the second guide portion cooperate to guide the downward movement of the pressing platform and the upward reset process of the pressing platform under the elastic force of the elastic member.

[0015] Optionally, at least one guide protrusion extending along the axial direction of the first guide portion is provided on the outer surface, 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.

[0016] Optionally, it further comprises a shell, wherein the pressing module, the communication module and the measurement and control module are all arranged in the shell;

[0017] A pressing avoidance hole is provided on the upper surface of the shell at a position corresponding to the pressing platform. The shell can effectively protect each module to avoid being smashed or damaged, and also has a dustproof effect.

[0018] Optionally, the communication module includes at least one of a USB communication module, an Ethernet communication module, and a Bluetooth communication module. For example, a communication connection is established with an intelligent terminal (such as a tablet) through the Bluetooth communication module, and the data detected by the cardiopulmonary resuscitation machine load capacity detection device is received and displayed through the intelligent terminal, so there is no need to set a display module on the cardiopulmonary resuscitation machine load capacity detection device, which can further reduce the cost of the cardiopulmonary resuscitation machine load capacity detection device.

[0019] The beneficial effects of the utility model are:

[0020] 1. The utility model can detect the load capacity of a cardiopulmonary resuscitation machine.

[0021] 2. The utility model can also be used to check the compression frequency of a cardiopulmonary resuscitation machine.

[0022] 3. The utility model adopts a communication module to communicate with an external device (generally referring to a smart terminal, such as a tablet, etc.), and receives and displays the data detected by the cardiopulmonary resuscitation machine load capacity detection device through the smart terminal. Therefore, there is no need to set a display module on the cardiopulmonary resuscitation machine load capacity detection device, which can further reduce the cost of the cardiopulmonary resuscitation machine load capacity detection device.

[0023] 4. The pressing and resetting structure formed by the elastic member and the guide bracket in the utility model can ensure that the position of the pressing platform does not deviate, thereby improving the stability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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:

[0025] Figure 1 This is a schematic diagram of the appearance of a cardiopulmonary resuscitation machine load capacity detection device in an embodiment of the present application;

[0026] Figure 2 This is a schematic diagram of the internal structure of the load capacity detection device for the cardiopulmonary resuscitation machine in the embodiment of the present application;

[0027] Figure 3 This is a schematic diagram of the cooperation between the pressing platform and the guide bracket in the embodiment of the present application;

[0028] Figure 4 A diagram showing the use status of the cardiopulmonary resuscitation machine load capacity detection device in the embodiment of the present application (including weights);

[0029] Figure 5 This is a principle block diagram of an embodiment of the present application;

[0030] Figure markings: 1-pressing platform; 1a-first guide part; 1b-fixing screw hole; 1c-guide protrusion; 2-communication module; 3-housing; 3a-pressing avoidance hole; 4-guide bracket; 4a-second guide part; 4b-guide groove; 5-power module; 6-tray; 6a-pressing part; 7-bolt; 8-measurement and control module; 9-elastic part; 10-displacement sensor; 11-weight. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] like Figure 1 , Figure 2 and Figure 5 As shown, in an embodiment of the present application, a cardiopulmonary resuscitation machine load capacity detection device includes a pressing module, a measurement and control module 8, a communication module 2 and a power module 5. Among them, the pressing module includes a pressing platform 1, an elastic member 9, 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 9 is used to simulate the automatic rebound of the human chest cavity, and the elastic member 9 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 8 is respectively connected to the communication module 2 and the displacement sensor 10, and the measurement and control module 8 calculates the pressing depth of the pressing platform 1 according to the data collected by the displacement sensor 10. The communication module 2 is used for the measurement and control module 8 to communicate with external devices. The power module 5 is respectively connected to the measurement and control module 8 and the displacement sensor 10, and is used to power the entire device.

[0034] In a possible embodiment, the communication module 2 includes at least one of a USB communication module, an Ethernet communication module, and a Bluetooth communication module. For example, the cardiopulmonary resuscitation machine load capacity detection device can establish a communication connection with an intelligent terminal (such as a tablet) through a Bluetooth communication module, and receive and display the data detected by the cardiopulmonary resuscitation machine load capacity detection device through the intelligent terminal, so there is no need to set a display module on the cardiopulmonary resuscitation machine load capacity detection device, so the cost of the cardiopulmonary resuscitation machine load capacity detection device can be further reduced.

[0035] In a possible embodiment, the displacement sensor 10 adopts a laser displacement transmitter.

[0036] like Figure 4 As shown, in a possible embodiment, a cardiopulmonary resuscitation machine load capacity detection device further includes a tray 6, and a pressing portion 6a extending downward is provided on the tray 6. When using the cardiopulmonary resuscitation machine load capacity detection device to check the load capacity of the cardiopulmonary resuscitation machine, it is necessary to use weights with relatively large mass, such as: 30kg, 40kg, 50kg weights, and the 30kg-50kg weights have the characteristics of large volume, so it is necessary to set a sufficiently large bearing surface for them. If the weights are placed directly on the pressing platform 1, the pressing platform 1 needs to be designed to be very large, which will cause the volume of the entire device to be larger. This problem is solved by adding a tray 6 in the embodiment of the present application. When using this cardiopulmonary resuscitation machine load capacity detection device to detect the load capacity of the cardiopulmonary resuscitation machine, the tray 6 is placed on the pressing platform 1, and when not in use, the tray 6 can be removed.

[0037] If the tray 6 is placed directly on the pressing platform 1, the weight 11 and the tray 6 may slide down together, so there is a safety hazard. In order to solve this problem, a mounting hole (not shown in the figure) for connecting with the pressing platform 1 is provided at the bottom of the pressing portion 6a of the tray 6. A fixing bolt hole 1b is provided in the middle of the pressing platform 1 at a position corresponding to the mounting hole. The tray 6 can be fixedly connected to the pressing platform 1 by bolts 7 through the mounting hole and the fixing bolt hole 1b.

[0038] like Figure 3 As 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 11 (including the tray 6) or the pump head of the cardiopulmonary resuscitation machine, the downward movement of the pressing platform 1 is guided by the first guide portion 1a and the second guide portion 4a, and the upward reset process of the pressing platform 1 is guided by the elastic force of the elastic member 9.

[0039] During use, if 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 rotate around its axial direction during the movement. In order to solve this problem, 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 the guide protrusion 1c is provided on the inner wall of the second guide portion 4a. The problem of the pressing platform 1 rotating around its own axis during the upward or downward movement can be well solved by matching the guide protrusion 1c and the guide groove 4b. In one example, three guide protrusions 1c are provided on the first guide portion 1a. Of course, the number of guide protrusions 1c can also be adjusted according to actual conditions. The number of guide grooves 4b is the same as the number of guide protrusions 1c, and they are matched one by one.

[0040] like Figure 1 and Figure 2 As shown, in a possible embodiment, a cardiopulmonary resuscitation machine load capacity detection device also includes a housing 3, and the pressing module, the measurement and control module 8 and the communication module 2 are all arranged in the housing 3. The housing 3 can effectively protect each module from being smashed and damaged, and prevent dust. A pressing avoidance hole 3a is opened on the upper surface of the housing 3 at a position corresponding to the pressing platform 1.

[0041] like Figure 2 As shown, in a possible embodiment, the elastic member 9 is a cylindrical spring. The cylindrical spring is used to simulate the rebound force of the chest, which is more in line with the actual situation during the cardiopulmonary resuscitation compression process and improves the accuracy of the detection.

[0042] In a possible embodiment, the measurement and control module 8 adopts a PLC control unit, and the PLC control unit is integrated with an analog-to-digital conversion subunit, and the analog-to-digital conversion subunit is used to convert the analog signal collected by the displacement sensor 10 into a digital signal.

[0043] The following uses three weights 11 with masses of 30kg, 40kg and 50kg as examples to illustrate the process of using the cardiopulmonary resuscitation machine load capacity detection device to detect the load capacity of the cardiopulmonary resuscitation machine:

[0044] (1) The pressing portion 6 a of the tray 6 is placed on the pressing platform 1 of the cardiopulmonary resuscitation machine load capacity detection device, and is connected with the fixing screw holes 1 b on the pressing platform 1 by using bolts 7 .

[0045] (2) Establish a communication connection between the cardiopulmonary resuscitation machine load capacity detection device and the tablet.

[0046] (3) A weight 11 with a mass of 30 kg is selected and placed on the tray 6. The cardiopulmonary resuscitation machine load capacity detection device automatically calculates the first pressing depth corresponding to the 30 kg weight 11 and sends it to the tablet through the communication module 2 for display. For the accuracy of the data, the weight 11 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 11, and the first pressing depths of the three tests are recorded as 29.98 mm, 30.01 mm, and 30.05 mm.

[0047] (4) Remove the 30kg weight 11 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 11.

[0048] (5) Install the cardiopulmonary resuscitation machine, set the working compression depth on the cardiopulmonary resuscitation machine to be tested, for example, 29.98mm, 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 load capacity detection device automatically calculates the second compression depth of the cardiopulmonary resuscitation machine to be tested, and sends it to the tablet through the communication module 2 for display. If the second compression depth is 29.80mm at this time, |29.80-29.98|≤0.5mm (0.5mm is the industry standard).

[0049] The working compression depth is set on the tested cardiopulmonary resuscitation machine, for example, 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.

[0050] The working compression depth is set on the tested cardiopulmonary resuscitation machine, for example, 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.

[0051] 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.

[0052] The test method for 40kg and 50kg weights is the same as that for 30kg weights.

[0053] 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.

[0054] 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 9 is between 30 kg and 50 kg.

[0055] In a possible embodiment, 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:

[0056] When conducting a no-load capacity test, the elastic member 9 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 sends it to the tablet through the communication module 2 for display. 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.

[0057] In a possible embodiment, the measurement and control module can also calculate the pressing frequency according to the analog voltage value output by the displacement sensor 10. In 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:

[0058] f1=N / T;

[0059] Wherein, f1 is the average pressing frequency (i.e., the actual pressing frequency), in Hz, N is the number of times the voltage peak occurs within T time, and T is the measurement cycle time.

[0060] The compression frequency difference between the actual compression frequency and the set working compression frequency of the cardiopulmonary resuscitation machine is calculated and sent to the tablet through the communication module 2 for display.

[0061] 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. A cardiopulmonary resuscitation machine load capacity detection device, characterized in that: It comprises a pressing module, a measurement and control module (8), a communication module (2) and a power supply module (5); The pressing module comprises a pressing platform (1), an elastic member (9), a guide bracket (4) and a displacement sensor (10); wherein 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 (9) is used to simulate the automatic rebound of the human chest cavity, and the elastic member (9) 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 (8) is connected to the communication module (2) and the displacement sensor (10) respectively; the measurement and control module (8) calculates the pressing depth of the pressing platform (1) according to the data collected by the displacement sensor (10); the communication module (2) is used for the measurement and control module (8) to communicate with external equipment; The power supply module (5) is connected to the measurement and control module (8) and the displacement sensor (10) respectively.

2. The cardiopulmonary resuscitation machine load capacity detection device according to claim 1, characterized in that: It also comprises a tray (6), wherein the tray (6) is provided with a pressing portion (6a) extending downwards.

3. The cardiopulmonary resuscitation machine load capacity detection device according to claim 2, characterized in that: The bottom of the pressing portion (6a) is provided with a mounting hole for connecting to the pressing platform (1); A fixing bolt hole (1b) is provided in the middle of the pressing platform (1) at a position corresponding to the mounting hole; The tray (6) can be fixedly connected to the pressing platform (1) by bolts (7) through the mounting holes and the fixing bolt holes (1b).

4. The cardiopulmonary resuscitation machine load capacity detection device according to claim 1, 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).

5. The cardiopulmonary resuscitation machine load capacity detection device according to claim 4, 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).

6. The cardiopulmonary resuscitation machine load capacity detection device according to claim 1, characterized in that: It also comprises a housing (3), wherein the pressing module, the communication module (2) and the measurement and control module (8) are all arranged in the housing (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).

7. The cardiopulmonary resuscitation machine load capacity detection device according to claim 1, characterized in that: The communication module (2) comprises at least one of a USB communication module, an Ethernet communication module and a Bluetooth communication module.

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