Method for testing flow of urine collection bag

Abstract

A urine collection bag flow testing method comprises the following steps that air in a urine collection bag is exhausted; a guide-in pipe of the urine collection bag is connected with a water storage and liquid outlet switch of the water storage assembly, and the water storage and liquid outlet switch is turned on to enable water in the water storage assembly to flow into the urine collection bag; when water in the ingress pipe begins to enter the urine collection bag, a timer is adopted to start timing, and meanwhile, the flow meter is reset; when the metering value of the flowmeter reaches half of the volume of the urine collection bag, the water storage and liquid outlet switch is turned off, meanwhile, the timer stops timing to obtain the measurement time, and the half of the volume of the urine collection bag is divided by the measurement time to calculate the flow measurement value; the arithmetic mean value of the plurality of flow measurement values is calculated, and the arithmetic mean value is used as the flow of water flowing into the urine collection bag. The test is carried out under the condition of constant flow speed, so that the test accuracy is improved, the situation that the capacity of water entering the urine collection bag cannot meet the capacity requirement due to limited time is avoided, and the vertical distance between the water storage device assembly and the urine collection bag does not need to be limited.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a method for testing the flow rate of a urine collection bag. Background Art

[0002] Currently, the conventional method for testing the flow rate of a urine collection bag (GB T 17257.2-2009 Urine collection bags - Part 2: Requirements and test methods) is as follows: Refer to the standard clause: Article 6.10.4.3 (in this standard Figure 2 ), inject a certain volume of water (half of the urine collection bag volume) into the water storage device, adjust the water storage device to a certain height from the urine collection bag, connect the water storage device to the urine collection bag, and then open the switch of the water storage device. The water should be injected into the urine collection bag within a certain time for testing.

[0003] The above conventional test method has the following problems: In the early stage of the test, the water volume in the water storage device is large and the flow rate is fast. In the later stage of the test, the water volume in the water storage device is small and the flow rate is slow, resulting in unstable flow rate of the urine collection bag due to different water volumes in the water storage device. At the same time, if the volume of the urine collection bag is large (such as 5000 ml, 6000 ml), within 60 - 70 s, the volume of water entering the urine collection bag may not reach half of the urine collection bag volume. In addition, when the vertical distance between the water storage device and the urine collection bag is large, the flow rate will become smaller; when the vertical distance is small, the flow rate will become larger. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a method for testing the flow rate of a urine collection bag, which conducts the test under the condition of constant flow rate through a water storage component, thereby improving the accuracy of the test.

[0005] A method for testing the flow rate of a urine collection bag includes the following steps: Step S11: Drain the air in the urine collection bag and close the urine outlet switch of the urine collection bag; Step S12: Connect the inlet tube of the urine collection bag to the water outlet switch of the water storage component, open the water outlet switch to allow the water in the water storage component to flow into the urine collection bag. Among them, a flow meter is installed in the water outlet switch, and the flow rate of the water is constant; Step S13: When the water in the inlet tube starts to enter the urine collection bag, start timing with a timer and reset the flow meter at the same time; When the measured value of the flow meter reaches half of the volume of the urine collection bag, close the water outlet switch, stop timing with the timer to obtain the measurement time, and calculate the flow rate measurement value by dividing half of the volume of the urine collection bag by the measurement time; Step S14: Each urine collection bag is tested at least twice or more, calculate the arithmetic mean of multiple flow rate measurement values, and use the arithmetic mean as the flow rate of the water flowing into the urine collection bag.

[0006] Preferably, the water storage assembly is a constant flow pump.

[0007] Preferably, the water storage assembly includes a water storage element, an inlet pipe is provided at the top of the water storage element, and an outlet pipe connected to the inlet pipe of the urine collection bag is provided at the bottom; An overflow port is provided on the side wall of the water storage element. When the water in the water storage element flows into the urine collection bag, water is evenly injected into the water storage element through the inlet pipe so that the liquid level height in the water storage element remains consistent, and at the same time, the flow rate of the water in the outlet pipe is constant.

[0008] Preferably, the bottom of the water storage element is funnel-shaped, and the cross-sectional angle of the funnel ranges from 0 to 170°.

[0009] Preferably, the water storage element is made of stainless steel, aluminum, acrylic, PC, PVC, PP or POM.

[0010] Preferably, the water in the water storage assembly is distilled water or deionized water, the temperature range is 10~50°C, and the flow rate range of the outlet pipe is 0~50 mL / s.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the water storage device assembly for testing under the condition of constant flow rate, the test accuracy is improved. The volume of water entering the urine collection bag will not fail to meet the volume requirement due to the limited time, and there is no need to limit the vertical distance between the water storage device assembly and the urine collection bag. Description of the Drawings

[0012] Figure 1 It is a schematic structural diagram of the device used in the urine collection bag flow rate test method in an embodiment of the present invention; Figure 2 It is a schematic structural diagram of the device used in the urine collection bag flow rate test method in another embodiment of the present invention.

[0013] Main Component Symbol Description: 100 - Water storage assembly; 11 - Water storage element; 12 - Inlet pipe; 13 - Outlet pipe; 14 - Overflow port; 15 - Water storage outlet switch; 16 - Flow meter; 200 - Urine collection bag; 21 - Inlet pipe; 22 - Urine collection outlet switch; 100a - Water storage assembly.

[0014] The following specific embodiments will further illustrate the present invention in conjunction with the above drawings. Specific Embodiments

[0015] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations.

[0016] Please refer to Figure 1 , in a urine collection bag flow rate testing device provided in an embodiment of the present invention, the water storage assembly 100 includes a water storage element 11, a water inlet pipe 12 is provided at the top of the water storage element 11, and a liquid outlet pipe 13 connected to the inlet pipe 21 of the urine collection bag 200 is provided at the bottom; An overflow port 14 is provided on the side wall of the water storage element 11. When the water in the water storage element 11 flows into the urine collection bag 100, the water storage element 11 is uniformly filled with water through the water inlet pipe 12, so that the liquid level height in the water storage element 11 remains consistent, and at the same time, the flow rate of the water in the liquid outlet pipe 13 is constant.

[0017] It should be noted that in this embodiment, in order to simulate the temperature of human urine, the temperature range of the water in the water storage assembly 100 is 10~50°C. A heat preservation layer is provided on the outer wall of the water storage element 11 to ensure that the liquid in the testing device remains at a constant temperature, and to avoid affecting the flow rate of the water in the liquid outlet pipe 13 due to temperature changes. The water storage element 11 is uniformly filled with water through the water inlet pipe 12 to avoid affecting the flow rate of the water in the liquid outlet pipe due to water flow changes. In order to ensure the inlet water temperature, an electric water faucet can be installed on the water inlet pipe 12 to facilitate heating of the water and monitor the water temperature at the same time. In order to simulate the flow rate of human urine, the flow rate range of the liquid outlet pipe 13 is 0~50 mL / s. In order to keep the liquid level height in the water storage element 11 consistent, the flow rate in the water inlet pipe 12 must be greater than the flow rate of the water in the liquid outlet pipe 13, and the excess water overflows from the overflow port 14.

[0018] In a preferred embodiment, the bottom of the water storage element 11 is funnel-shaped, and the cross-sectional angle range of the funnel is 0-170°, which is beneficial to the outflow of the liquid in the water storage element 11.

[0019] In a preferred embodiment, the water storage element 11 is made of stainless steel, aluminum, acrylic, PC, PVC, PP or POM.

[0020] In a preferred embodiment, the water in the water storage assembly 100 is distilled water or deionized water to avoid affecting the test results due to impurities or bubbles in the water.

[0021] Please refer to Figure 2 , in a urine collection bag flow rate testing device provided in another embodiment of the present invention, the water storage assembly 100a is a constant flow pump. Compared with Figure 1 the structure in, in this embodiment, although the structure of the testing device is simple and easy to operate, but using a constant flow pump, the cost is relatively high.

[0022] It should be noted that in this embodiment, in order to simulate the temperature of human urine, the temperature range of water in the water storage assembly 100a is 10-50 °C. A heat preservation layer is wrapped on the outer wall of the infusion tube of the constant flow pump to ensure that the liquid in the test device remains at a constant temperature, and to avoid affecting the water flow rate in the liquid outlet pipe 13 due to temperature changes. In order to ensure the inlet water temperature, an electric water faucet can be installed at the water inlet position of the constant flow pump to facilitate heating of the water and monitor the water temperature at the same time. In order to simulate the flow rate of human urine, the flow rate range of the liquid outlet pipe 13 is 0-50 mL / s.

[0023] A urine collection bag flow rate testing method provided by the present invention includes the following steps: Step S11: Drain the air in the urine collection bag 200 and close the urine collection and outlet switch 22 of the urine collection bag. Step S12: Connect the inlet pipe 21 of the urine collection bag 200 to the water storage and outlet switch 15 of the water storage assembly 100, and open the water storage and outlet switch 15 to allow the water in the water storage assembly 100 to flow into the urine collection bag 200. Among them, a flow meter 16 is installed in the water storage and outlet switch 15, and the water flow rate is constant. Step S13: When the water in the inlet pipe 21 starts to enter the urine collection bag 200, start timing with a timer and reset the flow meter 16 at the same time. When the measured value of the flow meter 16 reaches half of the capacity of the urine collection bag 200, close the water storage and outlet switch 15, stop the timer at the same time to obtain the measurement time, and divide half of the capacity of the urine collection bag 200 by the measurement time to calculate the flow rate measurement value. Step S14: Each urine collection bag 200 is tested at least twice or more, and the arithmetic mean of multiple flow rate measurement values is calculated, and the arithmetic mean is used as the flow rate of water flowing into the urine collection bag 200.

[0024] Furthermore, tests are carried out according to the existing test method and the test method of the present application respectively, and the test results are compared as shown in the following table. It can be seen from the table that the results measured by the test method of the present application are more accurate.

[0025]

[0026] In summary, the present invention performs tests under the condition of a constant flow rate by the water storage device assembly, thereby improving the test accuracy, and the capacity of water entering the urine collection bag will not fail to meet the capacity requirements due to a limited time, nor is it necessary to limit the vertical distance between the water storage device assembly and the urine collection bag.

[0027] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and all these changes and improvements fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A urine collection bag flow rate testing method, characterized in that It includes the following steps: Step S11: Drain the air in the urine collection bag and close the urine outlet switch of the urine collection bag. Step S12: Connect the inlet tube of the urine collection bag to the water outlet switch of the water storage component, and open the water outlet switch of the water storage component to allow the water in the water storage component to flow into the urine collection bag. A flow meter is installed in the water outlet switch of the water storage component, and the water flow is constant. Step S13: When the water in the inlet tube starts to flow into the urine collection bag, start timing with a timer and reset the flow meter at the same time. When the measured value of the flow meter reaches half of the capacity of the urine collection bag, close the water outlet switch of the water storage component, stop timing with the timer to obtain the measurement time, and calculate the flow measurement value by dividing half of the capacity of the urine collection bag by the measurement time. Step S14: Each urine collection bag is tested at least twice or more, and the arithmetic mean of multiple flow measurement values is calculated, and the arithmetic mean is used as the water flow rate into the urine collection bag.

2. The urine collection bag flow rate testing method according to claim 1, wherein The water storage component is a constant flow pump.

3. The urine collection bag flow rate testing method according to claim 1, characterized in that, The water storage component includes a water storage element. The top of the water storage element is provided with a water inlet pipe, and the bottom is provided with a liquid outlet pipe connected to the inlet tube of the urine collection bag. An overflow port is provided on the side wall of the water storage element. When the water in the water storage element flows into the urine collection bag, the water storage element is evenly filled with water through the water inlet pipe to keep the liquid level height in the water storage element consistent, and at the same time, the water flow rate in the liquid outlet pipe is constant.

4. The urine collection bag flow rate testing method according to claim 3, wherein The bottom of the water storage element is funnel-shaped, and the cross-sectional angle of the funnel ranges from 0 to 170°.

5. The urine collection bag flow rate testing method according to claim 3, wherein The water storage element is made of stainless steel, aluminum, acrylic, PC, PVC, PP or POM.

6. The urine collection bag flow rate testing method according to any one of claims 1 to 5, characterized in that, The water in the water storage component is distilled water or deionized water, the temperature range is 10~50°C, and the flow rate range of the liquid outlet pipe is 0~50 mL / s.

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