CN222517280U - Cardiopulmonary resuscitation machine load capacity detection device - Google Patents
Cardiopulmonary resuscitation machine load capacity detection device Download PDFInfo
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- CN222517280U CN222517280U CN202420498574.5U CN202420498574U CN222517280U CN 222517280 U CN222517280 U CN 222517280U CN 202420498574 U CN202420498574 U CN 202420498574U CN 222517280 U CN222517280 U CN 222517280U
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- 238000002680 cardiopulmonary resuscitation Methods 0.000 title claims abstract description 57
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 238000006073 displacement reaction Methods 0.000 claims abstract description 25
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 210000000115 thoracic cavity Anatomy 0.000 abstract 1
- 238000007906 compression Methods 0.000 description 14
- 230000006835 compression Effects 0.000 description 12
- 238000012360 testing method Methods 0.000 description 11
- 230000002612 cardiopulmonary effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000747 cardiac effect Effects 0.000 description 2
- 230000002685 pulmonary effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
本实用新型涉及一种心肺复苏机负载能力检测装置，包括按压模块、测控模块和电源模块；按压模块包括按压平台、弹性件、导向托架和位移传感器；按压平台与导向托架滑动连接，且按压平台能相对于导向托架在竖直方向上移动；弹性件用于模拟人体胸腔自动回弹，该弹性件安装在导向托架和按压平台之间；位移传感器用于采集按压平台的按压深度；测控模块包括控制单元和显示模块，控制单元分别与显示模块、位移传感器连接，控制单元根据位移传感器所采集的数据计算按压平台的按压深度并发送给显示模块进行显示；电源模块分别与测控模块和位移传感器连接，电源模块用于为整个装置供电。利用本实用新型能够实现对心肺复苏机的负载能力进行检测。
The utility model relates to a cardiopulmonary resuscitation machine load capacity detection device, including a pressing module, a measurement and control module and a power module; 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 the 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; the measurement and control module includes a control unit and a display module, the control unit is respectively connected to the display module and the displacement sensor, the control unit calculates the pressing depth of the pressing platform according to the data collected by the displacement sensor and sends it to the display module for display; the power module is respectively connected to the measurement and control module and the displacement sensor, and the power module is used to power the entire device. The utility model can be used to detect the load capacity of the cardiopulmonary resuscitation machine.
Description
Technical Field
The utility model belongs to the technical field of medical appliances, and relates to a load capacity detection device of a cardiopulmonary resuscitation machine.
Background
Medical institutions need to regularly check, examine, calibrate, maintain and maintain medical instruments, and the medical instruments are checked, examined, calibrated, maintained and recorded according to the requirements of product specifications, analyzed and evaluated in time, so that the medical instruments are ensured to be in a good state.
Measurement standards and other devices adopted by the detection conditions of the cardiopulmonary resuscitation machine are used for detecting parameters such as pressing depth, pressing frequency, single-time blowing frequency, tidal volume and the like by an airflow analyzer, a range finder, a standard pressure gauge and the like, but the load capacity of the cardiopulmonary resuscitation machine is not detected.
Therefore, there is a need to develop a new load capacity detection device for a cardiopulmonary resuscitation machine.
Disclosure of Invention
The utility model aims to provide a load capacity detection device for a cardiopulmonary resuscitation machine, which can realize the detection of the load capacity of the cardiopulmonary resuscitation machine.
The utility model relates to a load capacity detection device of a cardiopulmonary resuscitation machine, which comprises a pressing module, a measurement and control 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 connected with the guide bracket in a sliding way, and 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 arranged 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 comprises a control unit and a display module, wherein the control unit is respectively connected with the display module and the displacement sensor, and the control unit calculates the pressing depth of the pressing platform according to the data acquired by the displacement sensor and sends the pressing depth to the display module for display;
the power module is connected with the measurement and control module and the displacement sensor respectively and is used for supplying power to the whole device.
Optionally, the device further comprises a tray, wherein the tray is provided with a pressing part extending downwards. When the load capacity of a cardiopulmonary resuscitation machine is checked, a weight with a mass of 30 kg-50 kg is generally required, and the weight with a mass of 30 kg-50 kg has a large size, so that a large enough bearing surface is required to be arranged, which leads to a large size of the whole device. In order to avoid the problem, by adding the tray, when the load capacity of the cardiopulmonary resuscitation machine is tested by using the load capacity detection device of the cardiopulmonary resuscitation machine, the tray is placed on the pressing platform, and when the cardiopulmonary resuscitation machine is not used, the tray can be taken down.
Optionally, a mounting hole for connecting with the pressing platform is formed in the bottom of the pressing part;
the middle part of the pressing platform is provided with a fixing bolt hole at a position corresponding to the mounting hole;
The tray can be fixedly connected with the pressing platform through the mounting holes and the fixing bolt holes through bolts. If the tray is directly placed on the pressing platform, the problem that the weight and the tray slide down together may occur, so that potential safety hazards exist. To solve this problem, the tray and the pressing platform are fixedly connected by bolts.
Optionally, the pressing platform is provided with a first guiding part extending downwards, the guiding bracket is provided with a second guiding part extending upwards, and the pressing platform is in sliding connection with the second guiding part of the guiding bracket through the first guiding part. When the pressing platform is pressed by a weight or a cardiopulmonary resuscitation machine, the first guide part and the second guide part are matched to guide the downward movement of the pressing platform and the upward resetting process of the pressing platform under the elastic action of the elastic piece.
Optionally, at least one guiding protrusion extending along the axial direction of the first guiding part is arranged on the outer surface of the first guiding part, and a guiding groove correspondingly matched with the guiding protrusion is arranged on the inner wall of the second guiding part. 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 have a problem of rotating around its axial direction during the movement. In order to solve the problem, a guide protrusion and a guide groove are additionally arranged, and the rotation problem is solved by matching the guide protrusion and the guide groove.
Optionally, the cross section of the first guiding part provided with the guiding protrusion is square. The cross section of the guide bulge is designed to be square, and the anti-rotation effect is better.
Optionally, the device further comprises a shell, wherein the control units of the pressing module and the measurement and control module are arranged in the shell, and the display module is arranged on the shell;
The upper surface of the shell is provided with a pressing avoidance hole at a position corresponding to the pressing platform.
Alternatively, one side of the upper surface of the housing is inclined downward to form an inclined surface, and the display module is disposed on the inclined surface. The display module is arranged on the inclined plane, so that the operation and the reading of operators are facilitated.
Optionally, the display module adopts a touch display screen, and parameters can be set and read directly through the touch display screen.
Optionally, the elastic piece adopts cylindric spring, adopts cylindric spring to simulate the rebound force of chest, accords with the circumstances in the actual cardiopulmonary resuscitation compression process more, has improved the accuracy of detection.
The utility model has the beneficial effects that:
1. the utility model can detect the load capacity of the cardiopulmonary resuscitation machine.
2. The utility model also enables the examination of the compression frequency of a cardiopulmonary resuscitation machine.
3. The utility model adopts the cylindrical spring to simulate the rebound force of the chest, thereby being more in line with the actual situation in the cardiopulmonary resuscitation pressing process and improving the detection accuracy.
4. According to the utility model, the pressing and resetting structure formed by matching the elastic piece and the guide bracket is adopted, so that the position of the pressing platform is ensured not to deviate, and the use stability of the product is improved.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in the following preferred detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of a load capacity detection device of a CPR according to an embodiment of the present application;
FIG. 2 is a schematic diagram showing the internal structure of a device for detecting the load capacity of a CPR according to an embodiment of the present application;
FIG. 3 is a schematic view showing the cooperation of the pressing platform and the guide bracket according to the embodiment of the present application;
FIG. 4 is a diagram showing a second example of a device (with weight) for detecting the load capacity of a CPR device;
FIG. 5 is a functional block diagram of an embodiment of the present application;
The reference numerals are 1-pressing platform, 1 a-first guide part, 1 b-fixing screw hole, 1 c-guide protrusion, 2-display module, 3-shell, 3 a-pressing avoidance hole, 3 b-inclined plane, 4-guide bracket, 4 a-second guide part, 4 b-guide groove, 5-power module, 6-tray, 6 a-pressing part, 7-bolt, 8-control unit, 9-elastic piece, 10-displacement sensor and 11-weight.
Detailed Description
Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present utility model by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.
In which the drawings are for illustrative purposes only and are not intended to be construed as limiting the utility model, and in which certain elements of the drawings may be omitted, enlarged or reduced in order to better illustrate embodiments of the utility model, and not to represent actual product dimensions, it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
As shown in fig. 1, 2 and 5, in an embodiment of the present application, a load capacity detection device for a cardiopulmonary resuscitation machine includes a pressing module, a measurement and control module, and a power module 5. The pressing module comprises a pressing platform 1, an elastic piece 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 is movable in a vertical direction with respect to the guide bracket 4. The elastic piece 9 is used for simulating the automatic rebound of the chest of a human body, and the elastic piece 9 is arranged between the guide bracket 4 and the pressing platform 1. The displacement sensor 10 is used to acquire the pressing depth of the pressing stage 1. The measurement and control module comprises a control unit 8 and a display module 2, wherein the control unit 8 is respectively connected with the display module 2 and the displacement sensor 10, and the control unit 8 calculates the pressing depth of the pressing platform 1 according to data acquired by the displacement sensor 10 and sends the pressing depth to the display module 2 for display. The power module 5 is respectively connected with the measurement and control module and the displacement sensor 10 and is used for supplying power to the whole device.
In one possible embodiment, the displacement sensor 10 employs a laser displacement transducer. The display module 2 adopts a touch display screen.
As shown in fig. 4, in one possible embodiment, a load capacity detecting device for a cardiopulmonary resuscitation machine further includes a tray 6, and a pressing portion 6a extending downward is provided on the tray 6. When the cardiopulmonary resuscitation machine load capacity detection device is used for detecting the load capacity of the cardiopulmonary resuscitation machine, weights with relatively large mass, such as weights of 30kg, 40kg and 50kg, are required to be used, and the weights with the mass of 30 kg-50 kg have the characteristic of large volume, so that a large enough bearing surface is required to be arranged, and if the weights are directly placed on the pressing platform 1, the pressing platform 1 needs to be designed to be large, so that the whole device has large volume. This problem is solved in the embodiment of the application by adding a tray 6. When the load capacity of the cardiopulmonary resuscitation machine is detected by the load capacity detection device, the tray 6 is placed on the pressing platform 1, and when not in use, the tray 6 is removed.
If the tray 6 is directly placed on the pressing platform 1, the weight 11 and the tray 6 may slide down together, so that there is a safety hazard. In order to solve this problem, a mounting hole (not shown in the figure) for connection with the pressing stage 1 is provided at the bottom of the pressing portion 6a of the tray 6. The middle part of the pressing platform 1 is provided with a fixing bolt hole 1b at a position corresponding to the mounting hole. The tray 6 can be fixedly connected with the pressing platform 1 through the mounting hole and the fixing bolt hole 1b by using the bolt 7.
As shown in fig. 3, in one 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 to the second guide portion 4a of the guide bracket 4 via 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 and the guiding of the upward resetting process of the pressing platform 1 by the cooperation of the first guiding portion 1a and the second guiding portion 4a are performed by the elastic force of the elastic member 9.
In 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, there may be a problem in that the pressing platform 1 rotates around its axial direction during the movement. In order to solve this problem, at least one guide projection 1c extending in the axial direction thereof is provided on the outer surface of the first guide portion 1 a. A guide groove 4b corresponding to the guide projection 1c is provided on the inner wall of the second guide portion 4 a. The problem of axial rotation of the pressing platform 1 around itself during upward or downward movement can be well solved by the cooperation of the guide projection 1c and the guide groove 4b. In an example, three guiding protrusions 1c are provided on the first guiding portion 1a, and of course, the number of the guiding protrusions 1c may be adjusted according to practical situations. The number of the guide grooves 4b is the same as that of the guide protrusions 1c, and are fitted in one-to-one correspondence.
As shown in fig. 3, in one possible embodiment, the first guiding portion 1a is provided with a square guiding protrusion 1c with a square cross section, and a good anti-rotation effect can be achieved by adopting the square guiding protrusion 1c with a square cross section.
As shown in fig. 1 and 2, in one possible embodiment, a load capacity detection device for a cardiopulmonary resuscitation machine further includes a housing 3, wherein the control units 8 of the pressing module and the measurement and control module are disposed in the housing 3, and the display module 2 is disposed on the housing 3. The upper surface of the housing 3 is provided with a pressing avoiding hole 3a at a position corresponding to the pressing platform 1. One side of the upper surface of the housing 3 is inclined downward to form an inclined surface 3b, and the display module 2 is disposed on the inclined surface 3 b. The display module 2 is arranged on the inclined surface 3b, so that the operation and the reading of operators are facilitated.
In one possible embodiment, as shown in fig. 2, the elastic member 9 is a cylindrical spring. The rebound force of the chest is simulated by adopting the cylindrical spring, so that the chest compression device is more in line with the actual situation in the cardiopulmonary resuscitation compression process, and the detection accuracy is improved.
In a possible embodiment, the control unit 8 employs a PLC control unit, on which an analog-to-digital conversion subunit is integrated, for converting the analog signals collected by the displacement sensor 10 into digital signals.
The following describes a process of detecting the load capacity of the cardiopulmonary resuscitation machine by using the load capacity detection device of the cardiopulmonary resuscitation machine, taking three weights 11 with mass of 30kg, 40kg, and 50kg, respectively, as an example:
(1) The pressing part 6a of the tray 6 is placed on the pressing platform 1 of the load capacity detection device of the cardiopulmonary resuscitation machine, and is matched and connected with the fixed screw hole 1b on the pressing platform 1 by a bolt 7.
(2) The weight 11 with the mass of 30kg is selected and placed on the tray 6, and the first pressing depth corresponding to the weight 11 with the mass of 30kg is automatically calculated by the load capacity detection device of the cardiopulmonary resuscitation machine and displayed through the display module 2. For the accuracy of the data, several more tests can be performed on weights 11 of the same mass, and the first pressing depth obtained for each test is recorded separately. For example, at least three tests are performed on a 30kg weight 11, and the first pressing depths of the three tests are recorded as 29.98mm, 30.01mm and 30.05mm.
(3) The 30kg weight 11 is removed, and a 40kg weight or a 50kg weight is selected for testing, wherein the operation method is the same as that of the 30kg weight. After the test, the weight 11 was removed.
(4) The cardiopulmonary resuscitation machine is installed, the working compression depth of the cardiopulmonary resuscitation machine to be detected is set on the cardiopulmonary resuscitation machine to be detected, for example, 29.98mm, the quality control detection device of the cardiopulmonary resuscitation machine is operated to start working with the cardiopulmonary resuscitation machine, the cardiopulmonary resuscitation machine to be detected presses the compression platform 1 through the pump head, and the load capacity detection device of the cardiopulmonary resuscitation machine automatically calculates the second compression depth of the cardiopulmonary resuscitation machine to be detected and displays the second compression depth through the display module 2. If 29.80mm of the second pressing depth is used at this time, the absolute value of the second pressing depth is not more than 0.5mm and is not more than 29.80-29.98 (0.5 mm is an industry standard).
The working pressing depth of the heart-lung resuscitator to be measured is set to be 30.01mm, for example, the pressing platform 1 is pressed by the pump head of the heart-lung resuscitator to be measured, and if the second pressing depth is 30.20mm, the absolute value is 30.20-30.01 is less than or equal to 0.5mm.
The working pressing depth of the heart-lung resuscitator to be measured is set to be 30.05mm, the pressing platform 1 is pressed by the pump head of the heart-lung resuscitator to be measured, and if the second pressing depth is 30.25mm, the absolute value of the second pressing depth is 30.25-30.01 is less than or equal to 0.5mm.
The results of the above three tests all show that the load capacity of the cardiopulmonary resuscitation machine is sufficient to load 30kg of chest resilience.
The test method for the 40kg weight and the 50kg weight was the same as that for the 30kg weight.
If the difference between the second compression depth and the first compression depth measured by the 40k weight is not within the preset depth difference range, the load capacity of the cardiopulmonary resuscitation machine is insufficient to load 40kg of chest resilience force.
When the load capacity detection device of the cardiopulmonary resuscitation machine is used for carrying out load capacity test on the cardiopulmonary resuscitation machine, the elastic force of the elastic piece 9 is 30 kg-50 kg.
In one possible embodiment, the load capacity detection device of the cardiac and pulmonary resuscitation machine can be used for testing the no-load capacity of the cardiac and pulmonary resuscitation machine to be tested, specifically:
When the no-load capacity test is performed, the elastic piece 9 only needs to be capable of resetting the pressing platform 1 after the pressing platform 1 is pressed down. During testing, the pressing depth of the cardiopulmonary resuscitator to be tested is set, the pressing platform 1 is pressed through the pump head of the cardiopulmonary resuscitator to be tested, and the load capacity detection device of the cardiopulmonary resuscitator automatically calculates the second pressing depth of the cardiopulmonary resuscitator to be tested and displays the second pressing depth through the display module 2. If the difference value between the set pressing depth and the second pressing depth is within the preset depth difference range, the pressing depth of the tested cardiopulmonary resuscitator under the condition of no load meets the requirement, otherwise, the pressing depth under the condition of no load does not meet the requirement.
In one possible embodiment, the measurement and control module may further calculate the pressing frequency according to the analog voltage value output by the displacement sensor 10, and 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 that the voltage peak occurs:
f1=N/T
Where f1 is the average compression frequency (i.e., the actual compression frequency), in Hz, N is the number of times the voltage peak occurs in T time, and T is the metering cycle time.
The difference between the actual compression frequency and the set working compression frequency of the cardiopulmonary resuscitation machine is calculated and displayed on the display module 2.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present utility model, which is intended to be covered by the claims of the present utility model.
Claims (10)
1. The load capacity detection device of the cardiopulmonary resuscitation machine is characterized by comprising a pressing module, a measurement and control module and a power supply module (5);
The pressing module comprises a pressing platform (1), an elastic piece (9), a guide bracket (4) and a displacement sensor (10);
The pressing platform (1) is in sliding connection with the guide bracket (4), and the pressing platform (1) can move in the vertical direction relative to the guide bracket (4);
The elastic piece (9) is used for simulating automatic rebound of the chest of a human body, and the elastic piece (9) is arranged between the guide bracket (4) and the pressing platform (1);
The displacement sensor (10) is used for collecting 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 respectively connected with the display module (2) and the displacement sensor (10), and the control unit (8) calculates the pressing depth of the pressing platform (1) according to data acquired by the displacement sensor (10) and sends the pressing depth to the display module (2) for display;
The power module (5) is respectively connected with the measurement and control module and the displacement sensor (10).
2. The load capacity detection device for a cardiopulmonary resuscitation machine according to claim 1, further comprising a tray (6), wherein the tray (6) is provided with a pressing portion (6 a) extending downward.
3. The cardiopulmonary resuscitation machine load capacity detection apparatus according to claim 2, wherein a bottom portion of the pressing portion (6 a) is provided with a mounting hole for connection with the pressing platform (1);
The middle part of the pressing platform (1) is provided with a fixed bolt hole (1 b) at a position corresponding to the mounting hole;
The tray (6) can be fixedly connected with the pressing platform (1) through the mounting holes and the fixing bolt holes (1 b) through bolts (7).
4. The device for detecting the load capacity of the cardiopulmonary resuscitation machine according to claim 1, wherein the pressing platform (1) is provided with a first guiding portion (1 a) extending downwards, the guiding bracket (4) is provided with a second guiding portion (4 a) extending upwards, and the pressing platform (1) is slidably connected with the second guiding portion (4 a) of the guiding bracket (4) through the first guiding portion (1 a).
5. The device for detecting the load capacity of a cardiopulmonary resuscitation machine according to claim 4, wherein at least one guide protrusion (1 c) extending in an axial direction of the first guide portion (1 a) is provided on an outer surface of the first guide portion, and a guide groove (4 b) corresponding to the guide protrusion (1 c) is provided on an inner wall of the second guide portion (4 a).
6. The device for detecting the load capacity of a cardiopulmonary resuscitation machine according to claim 5, wherein the first guiding portion (1 a) is provided with a square-shaped guiding projection (1 c) in cross section.
7. The device for detecting the load capacity of the cardiopulmonary resuscitation machine according to claim 1, further comprising a housing (3), wherein the control units (8) of the pressing module and the measurement and control module are both disposed in the housing (3), and the display module (2) is disposed on the housing (3);
the upper surface of the shell (3) is provided with a pressing avoidance hole (3 a) at a position corresponding to the pressing platform (1).
8. The apparatus according to claim 7, wherein one side of the upper surface of the housing (3) is inclined downward to form an inclined surface (3 b), and the display module (2) is disposed on the inclined surface (3 b).
9. The device for detecting the load capacity of a cardiopulmonary resuscitation machine according to claim 1, wherein the display module (2) employs a touch display screen.
10. The cardiopulmonary resuscitation machine load capacity detection device according to claim 1, wherein the elastic member (9) is a cylindrical spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420498574.5U CN222517280U (en) | 2024-03-14 | 2024-03-14 | Cardiopulmonary resuscitation machine load capacity detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202420498574.5U CN222517280U (en) | 2024-03-14 | 2024-03-14 | Cardiopulmonary resuscitation machine load capacity detection device |
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| CN222517280U true CN222517280U (en) | 2025-02-25 |
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| CN202420498574.5U Active CN222517280U (en) | 2024-03-14 | 2024-03-14 | Cardiopulmonary resuscitation machine load capacity detection device |
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